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Single-chip Type with Built-in FET Switching Regulator Series
Simple Step-down Switching Regulators with Built-in Power MOSFET
BD9701FP/CP-V5/T/T-V5, BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
No.09027EBT01
Description The BD9701/BD9703/BD9702 are single-channel step-down switching regulator capable of PWM operation. The Pch MOS FET is built in for high efficiency in small load area.Lower electricity consumption of operating current 4mA (Typ) and stand-by current 0uA(Typ) is realized by adopting Bi-CMOS process.
Features 1) Maximum switching current: 1.5A(BD9701/BD9703), 3A(BD9702) 2) Built-in Pch FET ensures high efficiency 3) Output voltage adjustable via external resistors 4) High switching frequency: 100kHz (BD9701), 300kHz(BD9703), 110kHz(BD9702) 5) Overcurrent and thermal shutdown protection circuits built in 6) ON/OFF control via STBY pin 7) Small surface mount TO252-5 package (only BD9701FP, BD9703FP) Applications TVs, printers, DVD players, projectors, gaming devices, PCs, car audio/navigation systems, ETCs, communication equipment, AV products, office equipment, industrial devices, and more. Line Up BD9701FP/CP-V5/T/T-V5 BD9703FP/CP-V5/T/T-V5 Output Current Input Voltage Switching Frequency External Synchronization Stand-by Function Operating Temperature Package 100kHz (fixed) 1.5A 8 or Vo+3 36V 300kHz (fixed) x -40 +85 TO252-5/TO220CP-V5/TO220FP-5/TO220FP-5 (V5) TO220CP-V5/TO220FP-5/TO220FP-5 (V5) BD9702CP-V5/T/T-V5 3.0A 110kHz (fixed)
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1/16
2009.04- Rev.B
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
Absolute Maximum Ratings (Ta25) Parameter Supply Voltage (VCC-GND) STBY-GND OUT-GND INV-GND Maximum Switching Current Power Dissipation Operating Temperature Storage Temperature
*1 Without external heat sink, the power dissipation reduces by 6.4mW/ over 25. *2 Without external heat sink, the power dissipation reduces by 16.0mW/ over 25. Reduced by 160mW/, when mounted on Infinity size heatsink.
Technical Note
Symbol VCC VSTBY VO VINV BD9701/BD9703 BD9702 TO252 TO220 Iout
Ratings 36 36 36 10 1.5 3 0.8 (*1) 2(*2) -40+85 -55+150
Unit V V V V A
Pd Topr Tstg
W
Operating Conditions(Ta=-40+85) Parameter Input Voltage Output Voltage Symbol VCC Vo Limit MIN 8.0 or Vo+3(*3) 1.0 TYP MAX 35.0 32 Unit V V
*3The minimum value of an input voltage is the higher either 8.0V or Vo+3
Electrical Characteristics BD9701FP/CP-V5/T/T-V5 (Unless otherwise noted, Ta=25,VCC=12V,Vo=5V,STBY=3V) Parameter Output ON Resistance Efficiency Switching Frequency Load Regulation Line Regulation Over Current Protection Limit INV Pin Threshold Voltage INV Pin Threshold Voltage Thermal Variation INV Pin Input Current STBY Pin Threshold Voltage STBY Pin Input Current Circuit Current Stand-by Current
This product is not designed to be resistant to radiation.
Symbol Ron fosc VOLOAD VOLINE Iocp VINV VINV IINV ON OFF VSTBYON VSTBYOFF Istby Icc Ist
Limit MIN 80 1.6 0.98 2.0 -0.3 5 TYP 1.0 86 100 10 40 1.00 0.5 1 25 4 0 MAX 1.5 120 40 100 1.02 36 0.3 50 12 5
Unit % kHz mV mV A V % A V V A mA A
Conditions design guarantee Io0.5A design guarantee
VCC=20V,Io=0.51.5A VCC=1030V,Io=1.0A
Tj=085 design guarantee VINV=1.0V
STBY=3V
STBY0V
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2/16
2009.04- Rev.B
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
Electrical Characteristics BD9703FP/CP-V5/T/T-V5 (Unless otherwise noted, Ta=25,VCC=12V,Vo=5V,STBY=3V) Parameter Output ON Resistance Efficiency Switching Frequency Load Regulation Line Regulation Over Current Protection Limit INV Pin Threshold Voltage INV Pin Threshold Voltage Thermal Variation INV Pin Input Current STBY Pin Threshold Voltage STBY Pin Input Current Circuit Current Stand-by Current ON OFF Symbol Ron fosc VOLOAD VOLINE Iocp VINV VINV IINV VSTBYON VSTBYOFF Istby Icc Ist Limit MIN 270 1.6 0.98 2.0 -0.3 5 TYP 1.0 86 300 10 40 1.00 0.5 1 25 5 0 MAX 1.5 330 40 100 1.02 36 0.3 50 12 5 Unit % kHz mV mV A V % A V V A mA A STBY=3V
Technical Note
Conditions design guarantee Io0.5A design guarantee
VCC=20V,Io=0.51.5A VCC=1030V,Io=1.0A
Tj=085 design guarantee VINV=1.0V
STBY0V
Electrical Characteristics BD9702FP/CP-V5/T/T-V5 (Unless otherwise noted, Ta=25,VCC=12V,Vo=5V,STBY=3V) Parameter Output ON Resistance Efficiency Switching Frequency Load Regulation Line Regulation Over Current Protection Limit INV Pin Threshold Voltage INV Pin Threshold Voltage Thermal Variation INV Pin Input Current STBY Pin Threshold Voltage STBY Pin Input Current Circuit Current Stand-by Current ON OFF Symbol Ron fosc VOLOAD VOLINE Iocp VINV VINV IINV VSTBYON VSTBYOFF Istby Icc Ist Limit MIN 88 3.2 0.98 2.0 -0.3 5 TYP 0.5 86 110 10 40 1.00 0.5 1 25 4 0 MAX 1.5 132 40 100 1.02 36 0.3 50 12 5 Unit % kHz mV mV A V % A V V A mA A STBY0V STBY=3V Tj=085 design guarantee VINV=1.0V VCC=20V,Io=13A VCC=1030V,Io=1.0A Conditions design guarantee Io1A design guarantee
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3/16
2009.04- Rev.B
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
Characteristic Data BD9701FP/CP-V5/T/T-V5
Technical Note
100
6
110
OUTPUT VOLTAGE : VO [V]
OSC FREQUENCY : FOSC[Hz]
90
5 4 3 2 1 0
EFFICIENCY : [%]
105
80 70 60 50 40 10 100 1000
100
95
90 -10 10 30 50 70 90
0
1
2
3
4
OUTPUT CURRENT : IOUT[A]
OUTPUT CURRENT IOUT : [A]
Fig.1 EFFICIENCY-LOAD CURRENT
Fig.2 OCP VCC=20V
AMBIE NT T E MPE RAT URE : T a [ ]
Fig.3 fosc-Ta
5.1
5.100
5 4.5
OUTPUT VOLTAGE : VO [V]
OUTPUT VOLTAGE : VO [V]
5.05
VCC=30V
5.050
CIRCUIT CURRENT ; [mA]
4 3.5 3 2.5 2 1.5 1 0.5
5
5.000
4.95
VCC=10V
VCC=20V
4.950
4.9 0 200 400 600 800 1000
4.900 0 10 20 30 40
0 10 15 20 25 30 35
OUTPUT CURRENT : IOUT[A]
INPUT VOLTAGE : VCC [V]
INPUT VOLTAGE : VCC [V]
Fig.4 OUTPUT VOLTAGE-LOAD CURRENT
Fig.5 OUTPUT VOLTAGE-INPUT VOLTAGE (Vo=5V,Ro=5ohm)
110
Fig.6 CIRCUIT CURRENT-INPUT VOLTAGE NO LOAD
1.020
3.5
2.5 2 1.5 1 0.5 0 0 0.5 1 1.5 2
105
INV THRESHOLD VOLTAGE : VINV[V]
OUTPUT VOLTAGE : VDS[V]
3
OSC FREQUENCY : FOSC[Hz]
1.010
100
1.000
95
0.990
90 0 10 20 30 40
0.980 -10 10 30 50 70 90
SWITCHING CURRENT : ISW[A]
INPUT VOLTAGE : VCC [V]
AMBIENT TEMPERATURE : Ta []
Fig.7 VOUTOUT VOLTAGE-DRAIN CURRENT
Fig.8 fosc-INPUT VOLTAGE
Fig.9 INV THRESHOLD VOLTAGE-Ta
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4/16
2009.04- Rev.B
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
Characteristic Data BD9702FP/CP-V5/T/T-V5
Technical Note
100
6
120
[kHz] OSC FREQUENCY : FOSC
OUTPUT VOLTAGE : VO [V]
90
5 4 3 2 1 0
EFFICIENCY : [%]
80 70 60 50 40 10
115
110
105
OUTPUT CURRENT : IOUT[A]
100
1000
10000
0
OUTPUT CURRENT : IOUT[A]
1
2
3
4
5
6
100
- 10
10
30
50
70
90
AMBIENT TEMPERATURE : Ta []
Fig.10 EFFICIENCY-LOAD CURRENT
Fig.11 OCP VCC=20V
Fig.12 fosc-Ta
5.10
5.10
5
OUTPUT VOLTAGE : VO [V]
OUTPUT VOLTAGE : VO [V]
VCC=30V
5.05
5.05
VCC=20V
5.00
CIRCUIT CURRENT ; [mA]
0 10 20 30 40
4
3
5.00
2
4.95
VCC=10V
4.95
1
4.90 0 500 1000 1500 2000 2500 3000
4.90
0
OUTPUT CURRENT : IOUT[A]
INPUT VOLTAGE : VCC [V]
10
15
20
25
30
35
INPUT VOLTAGE : VCC [V]
Fig.13 OUTPUT VOLTAGE-LOAD CURRENT
Fig.14 OUTPUT VOLTAGE-INPUT VOLTAGE (Vo=5V,Ro=5ohm)
120
Fig.15 CIRCUIT CURRENTINPUT VOLTAGE NO LOAD
1.02
2.0
INV THRESHOLD VOLTAGE : VINV[V]
OSC FREQUENCY : FOSC[Hz]
OUTPUT VOLTAGE : VDS[V]
1.5
115
1.01
1.0
110
1.00
0.5
105
0.99
0.0 0 0.5 1 1.5 2 2.5 3
100 0 10 20 30 40
0.98 -10 10 30 50 70 90
SWITCHING CURRENT : ISW[A]
INPUT VOLTAGE : VCC [V]
AMBIENT TEMPERATURE : Ta []
Fig.16 VOUTOUT VOLTAGE-DRAIN CURRENT
Fig.17 fosc-INPUT VOLTAGE
Fig.18 INV THRESHOLD VOLTAGE-Ta
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5/16
2009.04- Rev.B
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
Characteristic Data BD9703FP/CP-V5/T/T-V5
100
6 5 4 3 2 1 0
Technical Note
330
OUTPUT VOLTAGE : VO [V]
90
OSC FREQUENCY : FOSC[Hz]
0 1 2 3 4
EFFICIENCY : [%]
315
80 70 60 50 40 10
300
285
OUTPUT CURRENT : IOUT[A]
100
1000
270 -10 10 30 50 70 90 AMBIENT TEMPERATURE : Ta []
OUTPUT CURRENT : IOUT[A]
Fig.19 EFFICIENCY-LOAD CURRENT
Fig.20 OCP VCC=20V
Fig.21 fosc-Ta
5.1
5.10
5
OUTPUT VOLTAGE : VO [V]
OUTPUT VOLTAGE : VO [V]
5.05
VCC=30V
5.05
CIRCUIT CURRENT ; [mA]
4
3
5
5.00
2
4.95
VCC=20V VCC=10V
4.95
1
4.9 0 200 400 600 800 1000
4.90 0 10 20 30 40
0 10 15 20 25 30 35
OUTPUT CURRENT : IOUT[A]
INPUT VOLTAGE : VCC [V]
INPUT VOLTAGE : VCC [V]
Fig.22 OUTPUT VOLTAGE-LOAD CURRENT
1.5
Fig.23 OUTPUT VOLTAGE-INPUT VOLTAGE (Vo=5V,Ro=5ohm)
INV THRESHOLD VOLTAGE : VINV[V]
330
1.02
Fig.24 CIRCUIT CURRENT-INPUT VOLTAGE NO LOAD
OSC FREQUENCY : FOSC[Hz]
OUTPUT VOLTAGE : VDS[V]
1
315
1.01
300
1.00
0.5
285
0.99
0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
270 0 10 20 30 40
0.98 -10 10 30 50 70 90
SWITCHING CURRENT : ISW[A]
INPUT VOLTAGE : VCC [V]
AMBIENT TEMPERATURE : Ta []
Fig.25 VOUTOUT VOLTAGE-DRAIN CURRENT
Fig.26 fOSC-INPUT VOLTAGE
Fig.27 INV THRESHOLD VOLTAGE-Ta
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6/16
2009.04- Rev.B
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
Block Diagram BD9701FP/CP-V5/T/T-V5, BD9703FP/CP-V5/T-V5, BD9702CP-V5/T/T-V5
Technical Note
VCC 1
TO252-5 Package Dimensions (mm)
VREF PWM COMP DRIVER
OSC STBY 5
STBY CTL LOGIC 2 TSD OCP OUT
Error AMP
INV 4
TO220CP-V5 Package Dimensions (mm)
3 GND
Fig.28 Block Diagram
Pin Description Pin No. 1 2 3,FIN(*2) 4 5 Pin Name VCC OUT GND INV STBY Function Input Power Supply Pin Internal Pch FET Drain Pin Ground Output Voltage Feedback Pin ON/OFF Control Pin
(*2)FIN is assigned in the case of TO252-5.
TO220FP-5 Package Dimensions (mm)
TO220FP-5(V5) Package Dimensions (mm)
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7/16
2009.04- Rev.B
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
Block Function Explanations VREF Generates the regulated voltage from VCC input, compensated for temperature.
Technical Note
OSC Generates the triangular wave oscillation frequency using an internal resistors and capacitor. Used for PWM comparator input. Error AMP This block, via the INV pin, detects the resistor-divided output voltage, compares this with the reference voltage, then amplifies and outputs the difference. PWM COMP Outputs PWM signals to the Driver block, which converts the error amp output voltage to PWM form. DRIVER This push-pull FET driver powers the internal Pch MOSFET, which accepts direct PWM input. STBY Controls ON/OFF operation via the STBY pin. The output is ON when STBY is High. Thermal Shutdown (TSD) This circuit protects the IC against thermal runaway and damage due to excessive heat. A thermal sensor detects the junction temperature and switches the output OFF once the temperature exceeds a threshold value (175deg). Hysteresis is built in (15deg) in order to prevent malfunctions due to temperature fluctuations. Over Current Protection (OCP) The OCP circuit detects the voltage difference between VCC and OUT by measuring the current through the internal Pch MOSFET and switches the output OFF once the voltage reaches the threshold value. The OCP block is a self-recovery type (not latch).
Timing Chart
VCC PIN VOLTAGE WAVE
OSC (Internal Oscillation Wave) Error AMP OUTPUT
OUTPIN VOLTAGE WAVE
OUTPUT VOLTAGE WAVE
Fig.29
Timing Chart
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8/16
2009.04- Rev.B
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
Notes for PCB layout
C5
Technical Note
R2 : 1kO
R1 : 4kO
4 INV
STBY 5
1 VCC C1 C2 GND
3
L1 OUT 2 D1 C4 C3 5.0V
Fig.30 Layout * Place capacitors between VCC and Ground, and the Schottky diode as close as possible to the IC to reduce noise and maximize efficiency. * Connect resistors between INV and Ground, and the output capacitor filter at the same Ground potential in order to stabilize the output voltage. Application component selection and settings Inductor L1 If the winding resistance of the choke coil is too high, the efficiency may deteriorate. As the overcurrent protection operates over minimum 1.6A (BD9701FP/CP-V5/T/T-V5, BD9703FP/CP-V5/T-V5) or 3.2A minimum (BD9701CP-V5/T/T-V5), attention must be paid to the heating of the inductor due to overload of short-circulated load. Note that the current rating for the coil should be higher than IOUT(MAX)IL. Iout (MAX): maximum load current If you flow more than maximum current rating, coil will become overload, and cause magnetic saturation, and those account for efficiency deterioration. Select from enough current rating of coil which doesn't over peak current. (VCC-VOUT) IL. = x VOUT x 1
fosc L1 VCC L1:inductor value, VCC:maximum input voltage, VOUT:output voltage, IL:coil ripple current value, fosc:oscillation frequency Shottky Barrier Diodes D1 A Schottky diode with extremely low forward voltage should be used. Selection should be based on the following guidelines regarding maximum forward current, reverse voltage, and power dissipation: The maximum current rating is higher than the combined maximum load current and coil ripple current (IL). The reverse voltage rating is higher than the VIN value. Power dissipation for the selected diode must be within the rated level. The power dissipation of the diode is expressed by the following formula: Pdi=Iout(MAX)xVfx(1-VOUT/VCC) Iout (MAX): maximum load current, Vf: forward voltage, VOUT: output voltage, VCC: input voltage Capacitor C1,C2,C3,C4,C5 As large ripple currents flow across C1 and C3 capacitors, high frequency and low impedance capacitor for a switching regulator must be used. The ceramic capacitor C2 must be connected. If not, noise may cause an abnormal operation. If the ripple voltage of input and output is large, C4 selected among ceramic , tantalum and OS capacitor with low ESR may decrease the ripple, however if the only low ESR capacitor is used, an oscillation or unstable operation may be caused. C5 is the capacitor for phase compensation and normally not used. If you need to improve the stability of feedback network, connect C5 between INV and OUTPUT. Feed back resistance R1,R2 The offset of output voltage is determined by both Feed back resistance and INV pin input current. VOUT=(R1+R2) VINV/R2 (VINV pin Threshold Votage) If Feed back resistance is high, the setting of output voltage will be move. Recommended : Resistance between INV pin and GND = less than 10k.
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9/16
2009.04- Rev.B
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
Technical Note
Recommended Circuit
C2
+ C1
1
VCC OUT 2
D1 C4 + C3 L1 5.0V
STBY 5
R1 : 4k C5
INV 4
R2 : 1k
3
GND
Fig.31 Recommended Circuit Output Voltage 5V : Application cicuit example
(BD9701FP/CP-V5/T/T-V5) Recommended Components (Example) Inductor L1100H Schottky Diode D1 Capacitor C1100F(50V) C2OPEN C3220F(25V) C4OPEN C5OPEN
:CDRH127/LD (sumida) :RB050LA-40 (ROHM) :Al electric capacitor UHD1H101MPT (nichicon) :Al electric capacitor UHD1E221MPT (nichicon)
Recommended Components example 2 Inductor L1100H Schotky Diode D1 Capacitor C1220F(25V) C21.0F(50V) C3470F(16V) C4150F(20V) C3OPEN
:CDRH127/LD (sumida) :RB050LA-40 (ROHM) :Al electric capacitor UVR1H221MPA (nichicon) :ceramic cap UMK212F105ZG (TAIYO YUDEN) :Al electric capacitor UVR1E471MPA (nichicon) :OS capacitor 20SVP150M (SANYO)
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10/16
2009.04- Rev.B
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
Technical Note
(BD9703FP/CP-V5/T/T-V5) Recommended Components Inductor L147H Schotky Diode D1 Capacitor C1100F(50V) C22.2F(50V) C3470F(25V) C4OPEN C3OPEN (BD9702CP-V5/T/T-V5) Recommended Components Inductor L147H Schotky Diode D1 Capacitor C11000F(50V) C2OPEN C31000F(25V) C4OPEN C3OPEN
:CDRH127/LD (sumida) :RB050LA-40 (ROHM) :Al electric capacitor UHD1H101MPT (nichicon) :ceramic cap CM43X7R225K50A (KYOCERA) :Al electric capacitor UHD1E471MPT (nichicon)
:CDRH127/LD (sumida) :RB050LA-40 (ROHM) :Al electric capacitor UHD1H102MPT (nichicon) :Al electric capacitor UHD1E102MPT (nichicon)
Test Circuit
Vcc 1 +
OUT 2 SW2
GND
3
INV 4 SW4
STBY 5 SW5
Icc A Vcc
1k 2k
A I INV VINV
A
ISTB VSTB
f
+ Vo
V
SW6
Io
Fig.32 Input Output Measurement Circuit
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11/16
2009.04- Rev.B
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
I/O Equivalent Circuit Pin 1 (VCC), Pin 3 (GND) Pin 2 (OUT) Pin 4 (INV)
Technical Note
Pin 5 (STBY)
VC
VCC
VCC
VCC
STB
OUT
INV
300
140K 60K
GND
70K
Fig.33Input Output Equivalent Circuit
Notes for use 1. Absolute Maximum Ratings Use of the IC in excess of absolute maximum ratings such as the applied voltage or operating temperature range may result in IC deterioration or damage. Assumptions should not be made regarding the state of the IC (short mode or open mode) when such damage is suffered. A physical safety measure such as a fuse should be implemented when use of the IC in a special mode where the absolute maximum ratings may be exceeded is anticipated. 2. GND voltage Ensure a minimum GND pin potential in all operating conditions. In addition, ensure that no pins other than the GND pin carry a voltage lower than or equal to the GND pin, including during actual transient phenomena. 3. Thermal design Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) in actual operating conditions. 4. Inter-pin shorts and mounting errors Use caution when orienting and positioning the IC for mounting on printed circuit boards. Improper mounting may result in damage to the IC. Shorts between output pins or between output pins and the power supply and GND pin caused by the presence of a foreign object may result in damage to the IC. 5. Operation in strong electromagnetic field Operation in a strong electromagnetic field may cause malfunction. 6. Thermal shutdown circuit (TSD circuit) This IC incorporates a built-in thermal shutdown circuit (TSD circuit). The TSD circuit is designed only to shut the IC off to prevent runaway thermal operation. Do not continue to use the IC after operating this circuit or use the IC in an environment where the operation of the thermal shutdown circuit is assumed. 7. Testing on application boards When testing the IC on an application board, connecting a capacitor to a pin with low impedance subjects the IC to stress. Always discharge capacitors after each process or step. Ground the IC during assembly steps as an antistatic measure, and use similar caution when transporting or storing the IC. Always turn the IC's power supply off before connecting it to or removing it from a jig or fixture during the inspection process.
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12/16
2009.04- Rev.B
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
Technical Note
8. IC pin input This IC is a monolithic IC which (as below) has P+ substrate and betweenthe various pin. A P-N junction is formed from this P layer of each pin. For example the relation between each potential is as follows. (When GND > PinB and GND > PinA, the P-N junction operates as a parasitic diode.) Parasitic diodes can occur inevitably in the structure of the IC. The operation of parasitic diodes can result in mutual interference among circuits as well as operation faults and physical damage. Accordingly, you must not use methods by which parasitic diodes operate, such as applying a voltage that is lower than the GND(P substrate)voltage to an input pin. Resistance Transistor (NPN) B

(PinA)
(PinB)

E GND
N P N N P substrate Parasitic diode GND P P N P substrate P N N P P
Parasitic diode (PinB)
(PinA)
C

Other adjacent components
B E GND
Parasitic diode GND
Parasitic diode Fig.34 Simplified structure of a Bipolar IC 9. Common impedance Power supply and ground wiring should reflect consideration of the need to lower common impedance and minimize ripple as much as possible (by making wiring as short and thick as possible or rejecting ripple by incorporating inductance and capacitance). 10. Pin short and mistake fitting Do not short-circuit between OUT pin and VCC pin, OUT pin and GND pin, or VCC pin and GND pin. When soldering the IC on circuit board, please be unusually cautious about theorientation and the position of the IC.
Bypass diode
Back current prevention diode
VCC
Output Pin
Fig.35
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13/16
2009.04- Rev.B
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
Technical Note
11. Application circuit Although we can recommend the application circuits contained herein with a relatively high degree of confidence, we ask that you verify all characteristics and specifications of the circuit as well as performance under actual conditions. Please note that we cannot be held responsible for problems that may arise due to patent infringements or noncompliance with any and all applicable laws and regulations. 12. Operation The IC will turn ON when the voltage at the STBY pin is greater than 2.0V and will switch OFF if under 0.3V. Therefore, do not input voltages between 0.3V and 2.0V. Malfunctions and/or physical damage may occur. Power Dissipation TO252-S
(4) 4.80W 5 POWER DISSIPATION : Pd [W]
(1) No heat sink (2) 2layer PCB (Copper laminate area 15 mmx15mm) (3) 2layer PCB (Copper laminate area 70 mmx70mm) (4) 4layer PCB (Copper laminate area 70 mmx70mm)
4
(3) 3.50W
3 (2) 1.85W
2
(1) 0.80W 1
0 0 25 50 75 85 100 125 AMBIENT TEMPERATURE : Ta[C]
Fig.36 TO220
150
15
POWER DISSIPATION : Pd [W]
(3) 11.0W 10 (2) 6.5W 5 (1) 2.0W
(1) No heat sink (2) Aluminum heat sink 3 50x50x2 (mm ) (3) Aluminum heat sink 100x100x2 (mm3)
0
0
25
50 75 100 125 AMBIENT TEMPERATURE : Ta[C]
Fig.37
150
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14/16
2009.04- Rev.B
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
Ordering part number
Technical Note
B
D
9
7
0
1
F
P
-
E
2
Part No.
Part No. 9701=36V/1.5A 9702=36V/1.5A 9703=36V/3.0A
Package FP : TO252-5 CP-V5 : TO220CP-V5 T/T-V5 : TO220FP-5(V5)
Packaging and forming specification E2: Embossed tape and reel None:Tray,Tube
Package specifications
TO252-5

6.50.2 +0.2 5.1 -0.1 2.30.2 C0.5 0.50.1
Tape Quantity Direction of feed
Embossed carrier tape 2000pcs E2
The direction is the 1pin of product is at the lower left when you hold
1.50.2
FIN
5.50.2 9.50.5
( reel on the left hand and you pull out the tape on the right hand
)
0.8
0.50.1 0.5 1.27 1.00.2
2.5
123
45
1.5
1pin
Direction of feed
(Unit : mm)
Reel
Order quantity needs to be multiple of the minimum quantity.
TO220FP-5
1.80.2
+0.3 10.0-0.1 +0.3 7.0 -0.1
+0.3 4.5 -0.1 3.20.1 +0.2 2.8 -0.1

Container Quantity Direction of feed Tube 500pcs Direction of products is fixed in a container tube
+0.4 17.0 -0.2
12.00.2
13.5Min.
8.00.2 0.7
1.2 0.8
1.778
0.50.1 2.85
12345
(Unit : mm)
Order quantity needs to be multiple of the minimum quantity.
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15/16
2009.04- Rev.B
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
Technical Note
TO220FP-5(V5)
1.80.2
+ 0.3 10.0 - 0.1 7.0 + 0.3 - 0.1 3.20.1
+0.3 4.5 -0.1

+0.2 2.8 -0.1
Container Quantity Direction of feed
Tube 500pcs Direction of products is fixed in a container tube
+0.4 17.0 -0.2
12.00.2
31.5Max.
8.00.2 0.7
(2.0)
17.5
1.2 0.8 0.50.1 1.778 4.25 8.15
12345
23.4
(2.85)
25.8
(Unit : mm)
Order quantity needs to be multiple of the minimum quantity.
TO220CP-V5
+0.3 3.20.1 10.0 -0.1 4.50.1 +0.2 2.8 -0.1

Tape Quantity Embossed carrier tape 500pcs E2
+0.4 15.2 -0.2
12.0 0.2
8.0 0.2
13.60
Direction of feed
16.92
( reel on the left hand and you pull out the tape on the right hand
The direction is the 1pin of product is at the lower left when you hold
)
4.92 0.2
1.0 0.2
1.444
0.820.1 0.92 1.778
0.420.1 1.58 (2.85) 4.12
(1.0)
(Unit : mm)
Reel
1pin
Direction of feed
Order quantity needs to be multiple of the minimum quantity.
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16/16
2009.04- Rev.B
Notice
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel-controller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law.
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http://www.rohm.com/contact/
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