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Ordering number : ENA0967
Bi-CMOS LSI
LV8747T
Overview
PWM Constant-Current Control Stepping Motor Driver and Switching Regulator Controller
The LV8747T is a PWM constant-current control stepping motor driver and switching regulator controller IC.
Features
* Two circuits of PWM constant-current control stepping motor driver incorporated * Two circuits of switching regulator controller incorporated * Motor driver control power incorporated * Control of the stepping motor to W1-2 phase excitation possible * Chopping frequency selectable * Output short-circuit protection circuit incorporated * High-precision reference voltage circuit incorporated * Output-stage push-pull composition enabling high-speed operation * Timer latch type short-circuit protection circuit incorporated * Upper and lower regenerative diodes incorporated * Thermal shutdown circuit incorporated
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Supply voltage Driver output peak current 1 Driver output continuous current 1 Driver output peak current 2 Driver output continuous current 2 Regulator output current Symbol VM max MDIO peak1 MDIO max1 MDIO peak2 MDIO max2 SWIO max OUT1/OUT2 tw 10ms, duty 20% OUT1/OUT2 OUT3/OUT4 tw 10ms, duty 20% OUT3/OUT4 OUT5/OUT6 tw 1s Conditions Ratings 38 1.75 1.5 0.8 0.5 500 Unit V A A A A mA
Continued on next page.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment.
O1007 MS PC 20071001-S00003 No.A0967-1/21
LV8747T
Continued from preceding page. Parameter Allowable power dissipation 1 Allowable power dissipation 2 Operating temperature Storage temperature *1 Specified circuit board : 100x100x1.6mm3 Symbol Pd max1 Pd max2 Topr Tstg : 4-layer glass epoxy printed circuit board Independent IC Our recommended four-layer substrate *1, *2 Conditions Ratings 0.4 4.85 -20 to +85 -55 to +150 Unit W W C C
*2 For mounting to the backside by soldering, see the precautions.
Allowable Operating Ratings at Ta = 25C
Parameter Supply voltage Logic input voltage VREF input voltage Regulator output voltage Regulator output current Error amplifier input voltage Timing capacity Timing resistance Triangular wave oscillation frequency Symbol VM VIN VREF VO IO VOA CT RT FOSC Conditions Ratings 10 to 35 0 to 5 0 to 3 VM-5 to VM 0 to 200 0 to 3 100 to 15000 5 to 50 10 to 800 Unit V V V V mA V pF k kHz
Electrical Characteristics at Ta = 25C, VM = 24V, VREF = 1.5V
Parameter General VM current drain Thermal shutdown temperature Thermal hysteresis width REG5 output voltage Motor Drivers [Charge pump block] Boost voltage Rise time Oscillation frequency Output block (OUT1/OUT2) Output on resistance RonU1 RonD2 Output leak current Diode forward voltage Output block (OUT3/OUT4) Output on resistance RonU2 RonD2 Output leak current Diode forward voltage Logic input block Logic pin input current IINL IINH Logic high-level input voltage Logic low-level input voltage Current control block VREF input current Chopping frequency Threshold voltage of current setting comparator IREF Fchop VHH VLH VHL VREF = 1.5V CHOP = 20k VREF = 1.5V, I0 = H, I1 = H VREF = 1.5V, I0 = L, I1 = H VREF = 1.5V, I0 = H, I1 = L -0.5 45 0.291 0.191 0.093 62.5 0.300 0.200 0.100 75 0.309 0.209 0.107 A kHz V V V VINH VINL VIN = 0.8V VIN = 5V 3 30 2.0 0.8 8 50 15 70 A A V V IOleak2 VD2 IO = -500mA, source side IO = 500mA, sink side VO = 35V ID = -500mA 1.0 1.5 1.1 1.8 1.4 50 1.3 A V IOleak1 VD1 IO = -1.5A, source side IO = 1.5A, sink side VO = 35V ID = -1.5A 1.0 0.5 0.5 0.8 0.8 50 1.3 A V VGH tONG Fcp VM = 24V VG = 10F CHOP = 20k 90 28.0 28.7 50 120 29.8 100 150 V ms kHz IM TSD TSD Vreg5 PS = "H", no load Design guarantee Design guarantee Ireg5 = -1mA 4.5 6 180 40 5.0 5.5 8 mA C C V Symbol Conditions min Ratings typ max Unit
Continued on next page.
No.A0695-2/21
LV8747T
Continued from preceding page. Parameter Output short-circuit protection circuit Charge current Threshold voltage IOCP VthOCP VOCP = 0V 15 0.8 20 1.0 25 1.2 A V Symbol Conditions min Ratings typ max Unit
Switching regulator Controller [Reference voltage block] REG25 output voltage Input stability Load stability Internal regulator block REGVM5 output voltage Triangular wave oscillator block Oscillation frequency Frequency fluctuation Current setting pin voltage Protective circuit block Threshold voltage of comparator Standby voltage Source current Threshold voltage Latch voltage Soft start circuit block Source current Latch voltage ISOFT VltSOFT VSOFT = 0V ISOFT = 40A 1.3 1.6 1.9 100 A mV VthFB VstSCP ISCP VthSCP VltSCP ISCP = 40A FB5, FB6 ISCP = 40A VSCP = 0V 1.6 1.65 2.5 1.8 1.40 1.55 1.70 100 3.4 1.95 100 V mV A V mV FOSC FDV VRT RT = 20k, CT = 620pF VM = 10 to 35V RT = 20k 0.91 72 80 1 0.98 88 5 1.05 kHz % V VregVM5 VregVM5 = 1mA VM-6.0 VM-5.0 V Vreg25 VDLI VDLO Ireg25 = -1mA VM = 10 to 35V Ireg25 = 0 to -3mA 2.475 2.500 2.525 10 10 V mV mV
Low-input malfunction preventive circuit block Threshold voltage Hysteresis voltage Error amplifier block Input offset voltage Input offset current Input bias current OPEN open gain Common-phase input voltage range Common phase removal ratio Max output voltage Min output voltage Output sink current Output source current PWM comparator block Input threshold voltage (Fosc = 10kHz) Input bias current MAX duty cycle 1 (Fosc = 80kHz) MAX duty cycle 2 (Fosc = 160kHz) MAX duty cycle 3 (Fosc = 10kHz) Output block Output ON resistance RonU3 RonD3 Leak current ILEAK IO = -200mA, source side IO = 200mA, sink side VO = 35V 10 6 12 8 5 A Don3 Don2 VT100 VT0 IBDT Don1 Duty cycle = 100% Duty cycle = 0% DT6 = 0.4V 5ch Internally fixed 5ch Internally fixed 6ch VREG25 divided by 17k and 8k 95 93 56 65 74 0.95 0.49 1.01 0.52 1.07 0.55 1 V V A % % % ViO I iO Iib AV VCM CMRR VOH VOL Isi Iso FB = 2.5V FB = 2.5V 300 45 4.5 VM = 10 to 35V 80 5.0 0.2 600 75 0.5 1000 105 85 3.0 6 30 100 mV nA nA dB V dB V V A A VUT VHIS 8.3 240 8.7 340 9.1 440 V mV
No.A0695-3/21
LV8747T
Package Dimensions
unit : mm (typ) 3337
TOP VIEW 9.0 7.0 0.5 SIDE VIEW BOTTOM VIEW
(4.4) 9.0 (4.4) 0.125 7.0 64 12 0.4 (0.5) (1.0) SIDE VIEW 0.16 1.2MAX
0.1
SANYO : TQFP64K(7X7)
No.A0695-4/21
LV8747T
6.0
Pd max - Ta
*1 With Exposed Die-Pad substrate *2 Without Exposed Die-Pad
Allowable power dissipation, Pd max - W
4.85
Four-layer substrate *1
4.0
Four-layer substrate *2
2.40 2.0
2.52
1.25
0 - 20
0
20
40
60
80
100
Ambient temperature, Ta - C
Substrate Specifications (Substrate recommended for operation of LV8747T) Size : 100mm x 100mm x 1.6mm (four-layer substrate [2S2P]) Material : Glass epoxy Copper wiring density : L1 = 85% / L4 = 90%
L1 : Copper wiring pattern diagram
L4 : Copper wiring pattern diagram
Cautions 1) The data for the case with the Exposed Die-Pad substrate mounted shows the values when 80% or more of the Exposed Die-Pad is wet. 2) For the set design, employ the derating design with sufficient margin. Stresses to be derated include the voltage, current, junction temperature, power loss, and mechanical stresses such as vibration, impact, and tension. Accordingly, the design must ensure these stresses to be as low or small as possible. The guideline for ordinary derating is shown below : (1)Maximum value 80% or less for the voltage rating (2)Maximum value 80% or less for the current rating (3)Maximum value 80% or less for the temperature rating 3) After the set design, be sure to verify the design with the actual product. Confirm the solder joint state and verify also the reliability of solder joint for the Exposed Die-Pad, etc. Any void or deterioration, if observed in the solder joint of these parts, causes deteriorated thermal conduction, possibly resulting in thermal destruction of IC.
No.A0695-5/21
LV8747T
Pin Assignment
64 I14 63 I04 62 PS 61 VREF34 60 OCP 59 OCPM 58 OUT5 57 OUT6 56 REGVM5 55 GND 54 NON5 53 INV5 52 FB5 51 NON6 50 INV6 49 FB6 DT6 48 RT 47 CT 46 REG25 45 REG5 44 SCP 43 SOFT 42 VMSW 41 VREF12 40 CHOP 39 CP1 38 Top View CP2 37 VG 36 I01 35 I11 34 PGND2 PGND1 32 OUT2B OUT2B OUT2A OUT2A OUT1B OUT1B OUT1A OUT1A PHA1 33
1 GND 2 PHA4 3 OUT4B 4 RNF4 5 OUT4A 6 VM34
LV8747T
7 OUT3B 8 RNF3 9 OUT3A 10 PGND3 11 I03 12 I13 13 PHA3 14 I02 15 I12 16 PHA2
VM12
VM12
RNF2
RNF2
RNF1 28
17
18
19
20
21
22
23
24
25
26
27
29
RNF1
30
31
No.A0695-6/21
Block Diagram
CP1 CP2
OUT2A OUT2B RNF2 RNF3 OUT3A CT OUT3B VM34 OUT4A OUT4B RNF4 OUT6 OUT5 RT
VG
RNF1 OUT1A
OUT1B VM12
REG25
VMSW 2.5V reference voltage Triangular wave oscillator Internal ; reference voltage
VMSW 5V REG5
Charge pump
+ Constant current + + + + -
5V
Output preamplifier stage
Output preamplifier stage
Output preamplifier stage
Output preamplifier stage
Output preamplifier stage
Output preamplifier stage
Output preamplifier stage
PGND2 Output control logic Output control logic + Current selection DAC
VM
Output preamplifier stage
PGND1
NON5 INV5 FB5
LV8747T
PGND3
Output control logic
Output control logic
+ NON6
+ + -
INV6 FB6 SOFT
VREF12 + -
TSD
+ -
Current selection DAC
+ Current selection DAC Current selection DAC
+
+
+
LVS Over-current protection circuit
GND
Oscillation circuit
Internal reference voltage VM-5V
Short-circuit protection circuit
SCP
GND PHA2 I02 I12 VREF34 I03 I13 PHA3 OCP OCPM PHA4 I04 I14
CHOP
I10 I11
PHA1
PS
REGVM5
DT6
No.A0695-7/21
LV8747T
Pin Functions
Pin No 24 25 30 31 26 27 28 29 22 23 18 19 20 21 35 34 33 14 15 16 40 32 17 6 9 7 8 5 3 4 11 12 13 63 64 2 61 10 60 59 39 62 36 38 37 41 44 56 45 46 47 42 43 54 I01 I11 PHA1 I02 I12 PHA2 VREF12 PGND1 PGND2 VM34 OUT3A OUT3B RNF3 OUT4A OUT4B RNF4 I03 I13 PHA3 I04 I14 PHA4 VREF34 PGND3 OCP OCPM CHOP PS VG CP1 CP2 VMSW REG5 REGVM5 REG25 CT RT SOFT SCP NON5 Driver 4ch Output phase shift input pin Driver 3/4ch Output current setting reference voltage input pin Driver output Power GND Pin to connect to the output short-circuit state detection time setting capacitor Over-current mode changeover pin Pin to connect to the resistor to set the chopping frequency Driver Power save input pin Charge pump capacitor connection pin Charge pump capacitor connection pin Charge pump capacitor connection pin Power connection pin Internal regulator output pin Internal regulator output pin Regulator Reference voltage output pin Regulator Timing capacity external pin Regulator Timing resistor external pin Regulator Soft start setting pin Regulator Timer and latch setting pin Regulator Error amplifier 5 input + pin Continued on next page. Driver 3ch Output phase shift input pin Driver 4ch Output current setting input pin Driver 2ch Output phase shift input pin Driver 1/2ch Output current setting reference voltage input pin Driver output Power GND Driver output Power GND Driver 3/4ch Power connection pin Driver 3ch OUTA output pin Driver 3ch OUTB output pin Driver 3ch Current sense resistor connection pin Driver 4ch OUTA output pin Driver 4ch OUTB output pin Driver 4ch Current sense resistor connection pin Driver 3ch Output current setting input pin Driver 1ch Output phase shift input pin Driver 2ch Output current setting input pin Driver 1ch Output current setting input pin RNF2 Driver 2ch Current sense resistor connection pin OUT2B Driver 2ch OUTB output pin OUT2A Driver 2ch OUTA output pin RNF1 Driver 1ch Current sense resistor connection pin OUT1B Driver 1ch OUTB output pin OUT1A Driver 1ch OUTA output pin Pin VM12 Driver 1/2ch Pin to connect to power supply Description
No.A0695-8/21
LV8747T
Continued from preceding page. Pin No 53 52 58 51 50 49 57 48 55 1 INV5 FB5 OUT5 NON6 INV6 FB6 OUT6 DT6 GND GND Pin Regulator Error amplifier 5 input - pin Regulator Error amplifier 5 output pin Regulator Output 5 Regulator Error amplifier 6 input + pin Regulator Error amplifier 6 input - pin Regulator Error amplifier 6 output pin Regulator Output 6 Regulator Output 6 MAX DUTY setting pin GROUND GROUND Description
No.A0695-9/21
LV8747T
Equivalent Circuits
Pin No. 2 11 12 13 14 15 16 33 34 35 59 62 63 64 36 37 38 Pin Name PHA4 I03 I13 PHA3 I02 I12 PHA2 PHA1 I11 I01 OCPM PS I04 I14 VG CP2 CP1
100k 10k
Equivalent Circuit
REG5
GND
VMSW
38
37
36
REG5
100
GND
3 4 5 6 7 8 9 10 OUT4B RNF4 OUT4A VM34 OUT3B RNF3 OUT3A PGND3
500
6
REG5
59
37
GND 10
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 PGND2 OUT2B OUT2B RNF2 RNF2 OUT2A OUT2A VM12 VM12 OUT1B OUT1B RNF1 RNF1 OUT1A OUT1A PGND1
500
4 8
24 25
REG5 22 23 30 31 18 19 26 27
GND 17 32
20 28 21 29
Continued on next page.
No.A0695-10/21
LV8747T
Continued from preceding page. Pin No. 40 61 Pin Name VREF12 VREF34 Equivalent Circuit
REG5
500
GND
39 CHOP
REG5
1k
GND
60 OCP
REG5
500
GND
44
REG5
VMSW
2k
26k
GND
45 REG25
REG5
74k
VMSW
5k
GND
Continued on next page.
6.25k
No.A0695-11/21
LV8747T
Continued from preceding page. Pin No. 49 50 51 52 53 54 Pin Name FB6 INV6 NON6 FB5 INV5 NON5
500 2k 2k 500
Equivalent Circuit
REG5 VMSW VMSW
50 53
GND VMSW 51 54
48 DT6
500
49 52
REG5 VMSW
500
GND
46 47 CT RT
REG5
500
500
500
500 500
GND VMSW 46
57 58 OUT6 OUT5
47
VMSW
REGVM5
Continued on next page.
No.A0695-12/21
LV8747T
Continued from preceding page. Pin No. 56 Pin Name REGVM5 Equivalent Circuit
VMSW
150K
65K
GND
42 SOFT
REG5
500 500
GND VMSW
43
SCP
REG5
500
GND VMSW
No.A0695-13/21
LV8747T
Stepping Motor Driver OUT1/OUT2(OUT3/OUT4) (1) Output control logic
Parallel input (Note) PS Low High High PHA * Low High OUTA Off Low High Output OUTB Off High Low Current direction Standby OUTBOUTA OUTAOUTB
(Note) : Enter either "H" or "L" externally for the logic input pin. Never use the input pin in the OPEN state.
(2) Constant-current setting
I0 (Note) High Low High Low I1 (Note) High High Low Low IO = (VREF/5) /RNF IO = ((VREF/5) /RNF) x 2/3 IO = ((VREF/5) /RNF) x 1/3 IO = 0 Output current
(Note) : Enter either "H" or "L" externally for the logic input pin. Never use the input pin in the OPEN state.
Set current calculation method The constant-current control setting of STM driver is determined as follows from the setting of VREF voltage, and I0 and I1, and resistor (RNF) connected between RNF and GND : Iconst [A] = ((VREF [V] /5) /RNF []) x attenuation factor (Example) For VREF = 1.5V, I0 = I1 = "H" and RNF = 1 ; Iconst = 1.5V/5/1 x 1 = 0.3A (3) Setting the chopping frequency For constant-current control, chopping operation is made with the frequency determined by the external resistor (connected to the CHOP pin). The chopping frequency to be set with the resistance connected to the CHOP pin (pin 39) is as shown below.
140
Chopping frequency
120
Chopping frequency (kHz)
100
80
60
40
20 0 0 10 20 30 40 50 60 70 80
CHOP resistance (k)
The recommended chopping frequency ranges from 30kHz to 120kHz.
No.A0695-14/21
LV8747T
(4) Constant-current control time chart (chopping operation) (Sine wave increasing direction)
STEP
Set current
Set current Coil current Forced CHARGE section fchop
Current mode CHARGE
SLOW
FAST
CHARGE
SLOW
FAST
(Sine wave decreasing direction)
STEP
Set current
Coil current Forced CHARGE section Set current
fchop
Current mode CHARGE
SLOW
FAST
Forced CHARGE section
FAST
CHARGE
SLOW
In each current mode, the operation sequence is as described below : * At rise of chopping frequency, the CHARGTE mode begins.(The section in which the CHARGE mode is forced regardless of the magnitude of the coil current (ICOIL) and set current (IREF) exists for 1/16 of one chopping cycle.) * The coil current (ICOIL) and set current (IREF) are compared in this forced CHARGE section. When (ICOILNo.A0695-15/21
LV8747T
(5) Output current vector locus (one step is normalized to 90 degrees)
2-phase commutation position 100.0
Channel 1 phase current ratio
66.7
33.3
0.0 0.0 33.3 66.7 100.0 Channel 2 phase current ratio
(6) Typical current waveform in each excitation mode Two-phase excitation (1/2ch, CW mode)
I01,I11 PHA1 I02,I12
H
H
PHA2
(%) 100 IOUT1 0 -100 (%) 100 IOUT2 0 -100
No.A0695-16/21
LV8747T
1-2 phase excitation (1/2ch, CW mode)
I01 I11 PHA1
I02 I12
PHA2 (%) 100 IOUT1 0 -100 (%) 100 0 IOUT2 -100
PCA01195
W1-2 phase excitation (1/2ch, CW mode)
I01 I11 PHA1 I02
I12 PHA2 (%) 100 IOUT1 0 -100 (%) 100 IOUT2 0 -100
PCA01196
No.A0695-17/21
LV8747T
Output short-circuit protection circuit To protect IC from damage due to short-circuit of the output caused by lightening or ground fault, the output short-circuit protection circuit to put the output in the standby mode is incorporated. (1) Output short-circuit protection operation changeover function Changeover to the output short-circuit protection of IC is made by the setting of OCPM pin.
OCPM "Low" "High" State Auto reset method Latch method
(Auto reset method) When the output current is below the output short-circuit protection current, the output is controlled by the input signal. When the output current exceeds the detection current, the switching waveform as shown below appears instead.
Exceeding the over-current detection current ON Output current OFF ON OFF ON
1V OCP voltage
0.5 to 1s
256s (TYP)
When detecting the output short-circuit state, the short-circuit detection circuit is activated. When the short-circuit detection circuit operation exceeds the timer latch time described later, the output is changed over to the standby mode and reset to the ON mode again in 256s (TYP). In this event, if the over-current mode still continues, the above switching mode is repeated till the over-current mode is canceled. (Latch method) Similarly to the case of automatic reset method, the short-circuit detection circuit is activated when it detects the output short-circuit state. When the short-circuit detection circuit operation exceeds the timer latch time described later, the output is changed over to the standby mode. In this method, latch is released by setting PS = "L" (2) OCP pin constant setting method (timer latch setting) Connect C between the OCP pin and GND, and the time up to the output OFF can be set in case of output short-circuit. The C value can be determined as follows : Timer latch : Tocp Tocp C x V/I [s] V : Threshold voltage TYP 1V I : OCP charge current TYP 20A (C: Recommended constant value 100pF to 200pF)
No.A0695-18/21
LV8747T
Switching Regulator Controller (1) Regulator block diagram
MAXDUTY setting pin 5ch internally fixed
REG5
VMSW
DT
CT
RT VM
5V REG25 2.5V 2.5V reference voltage
Internal reference voltage
1.0V
Triangle wave
0.5V
5V Triangle wave oscillator
5V
Constant Current
1.6A NON FB
Error amplifier 5V + + 1.55V + -
PWM comparator 5V + FB comparator High during LVS - 5V
operation
OUT 5V LVS 5V Short-circuit protection circuit 5V
Constant Current
+
High during protection circuit operation
REGOUT
2.5A VM Internal reference voltage VM-5V
SOFT INV Soft start setting pin Timer/latch setting pin
SCP REGVM5
(2) Timing chart
Short-circuit protection comparator reference voltage Oscillator triangular wave output (CT) Max_Duty setting voltage (DT) Error amplifier output (FB) Output (OUT) Triangular wave conversion output
1.55V 1.0V 0.5V
(1) SCP pin waveform Short-circuit protection comparator output Latch output SOFT pin waveform
1.8V
(2)
VMSW supply voltage
9.1V
No.A0695-19/21
LV8747T
(3) SOFT pin constant setting method (Soft start setting) The switching regulator can be set to soft-start by connecting C between the SOFT pin and GND. Determine the C value as follows : Soft start time : Tsoft Tsoft C x V/I [s] V : Error amplifier input + pin voltage (NON5/NON6) I : SOFT charge current TYP 1.6A
(4). SCP pin constant setting method (Timer latch setting) The time up to the output OFF in case of regulator output short-circuit can be set by connecting C between the SCP pin and GND. Determine the C value as follows : Timer latch : Tscp Tscp C x V/I [s] V : Threshold voltage TYP 1.8V I : SCP charge current TYP 2.5A
(5) RT pin constant setting method (Capacitor charge/discharge current setting) The CT pin capacitor charge/discharge current can be set for triangular wave generation by connecting R between the RT pin and GND. Determine the R value as follows : Charge/discharge current : Irt Irt V/R [A] V : R pin voltage TYP 0.98V
(6) CT pin constant setting method (Triangular wave oscillation frequency setting) The triangular wave oscillation can be set (together with the setting of charge/discharge current setting of RT pin) by connecting C between the CT pin and GND. Determine the C value as follows : Triangular wave oscillation frequency : Fosc Fosc 1/{2xCxV/I} [Hz] V : Triangle wave amplitude TYP 0.5V (Fosc = 10kHz) *Note that the amplitude increases with the frequency. I : Capacitor charge/discharge current. See the RT pin constant setting method of (5).
No.A0695-20/21
LV8747T
Application Circuit
0.1F ++
1.5V
5.6k
5.6k
5.6k
pu
t
Lo
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
100pF
gi
c
in
0.1F
5.6k
OCPM
PS
OCP
OUT5
OUT6
FB5
INV5
REGVM5
VREF34
NON5
1 GND 2 PHA4 1 3 OUT4B 4 RNF4 5 OUT4A 6 VM34 1 7 OUT3B 8 RNF3 9 OUT3A 10 PGND3 11 I03 12 I13 13 PHA3 14 I02 15 I12
NON6
INV6
GND
FB6
I14
I04
17k
8k
DT6 48 RT 47 CT 46 REG25 45 REG5 44 SCP 43 SOFT 42 VMSW 41
20k 0.1F
620pF 2.2F
0.1F 0.1F ++ -
LV8747T
0.01F 20k
VREF12 40 CHOP 39 CP1 38 CP2 37 VG 36 I01 35 I11 34
1.5V 0.1F 0.1F
Logic input
Logic input
OUT2B
OUT2B
OUT2A
OUT2A
OUT1B
OUT1B
OUT1A
VM12
VM12
RNF2
RNF2
RNF1
RNF1
PGND2
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
- + 10F
0.25
-
SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written consent of SANYO Semiconductor Co.,Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO Semiconductor Co.,Ltd. product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above.
This catalog provides information as of October, 2007. Specifications and information herein are subject to change without notice. PS No.A0967-21/21
24V
0.25
+
PGND1
16 PHA2
OUT1A
PHA1 33

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