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LD1117A/B SERIES
LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
PRELIMINARY DATA
s
s
s s s
s
s s s
s
s
LOW DROPOUT VOLTAGE (1.15V TYP @ IOUT=1.2A, 25 oC) VERY LOW QUIESCENT CURRENT (5mA TYP @ 25 oC) TYPE A: OUTPUT CURRENT UP TO 1000mA TYPE B: OUTPUT CURRENT UP TO 1200mA FIXED OUTPUT VOLTAGE OF: 1.8V, 2.5V, 2.85V, 3.3V, 5.0V ADJUSTABLE VERSION AVAILABILITY (Vref=1.25V) INTERNAL CURRENT AND THERMAL LIMIT ONLY 10 F FOR STABILITY AVAILABLE IN 2% (AT 25oC) AND 4% IN FULL TEMPERATURE RANGE HIGH SUPPLY VOLTAGE REJECTION : (80dB TYP) TEMPERATURE RANGE : 0oC TO 125oC
SOT-223
TO-252 (DPAK)
DESCRIPTION The LD1117A and LD1117B are two LOW DROP Voltage Regulator able to provide respectively up to 1000mA and 1200mA of Output Current, available even in adjustable version (Vref=1.25V). Concerning fixed versions, are offered the following Output Voltages: 1.8V, 2.5V, 2.85V, 3.3V and 5.0V. The 2.85V type is ideal for SCSI-2 lines active termination. The device is supplied in: SOT-223, DPAK. The BLOCK DIAGRAM
SOT-223 and DPAK surface mount packages optimize the thermal characteristics even offering a relevant space saving effect. High efficency is assured by NPN pass transistor. In fact in this case, unlike than PNP one, the Quiescent Current flows mostly into the load. Only a very common 10F minimum capacitor is needed for stability. The ADJUSTABLE LD1117 is pin to pin compatible with the other standard Adjustable voltage regulators maintaining the better performances in terms of Drop and Tolerance.
June 2000
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LD1117A/B SERIES
ABSOLUTE MAXIMUM RATINGS
Symbol V IN P to t T stg To p DC Input Voltage Power Dissipation Storage Temperature Range Operating Junction Temperature Range Parameter Value 10 12 -40 to 150 0 to 125 Unit V W
o o
C C
Absolute Maximum Ratings are those value beyond which damage to the device may occur. Functional operation under these condition is not implied. Over the above suggested Max Power Dissipation a Short Circuit could definetively damage the device.
THERMAL DATA
Symbol Parameter SOT-223 15 DPAK 8 Unit
o
R thj- ca se Thermal Resistance Junction-case
C/W
APPLICATION CIRCUIT
2/16
LD1117A/B SERIES
CONNECTION DIAGRAM AND ORDERING NUMBERS (top view)
SOT-223
DPAK
SOT-223 LD1117AS18TR LD1117BS18TR LD1117AS25TR LD1117BS25TR LD1117AS28TR LD1117BS28TR LD1117AS33TR LD1117BS33TR LD1117AS50TR LD1117BS50TR LD1117AST-R LD1117BST-R
DPAK LD1117ADT18TR LD1117BDT18TR LD1117ADT25TR LD1117BDT25TR LD1117ADT28TR LD1117BDT28TR LD1117ADT33TR LD1117BDT33TR LD1117ADT50TR LD1117BDT50TR LD1117ADT-R LD1117BDT-R
Output Voltage 1.8V 1.8V 2.5V 2.5V 2.85V 2.85V 3.3V 3.3V 5V 5V ADJUSTABLE FROM 1.25 T O 15V
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LD1117A/B SERIES
ELECTRICAL CHARACTERISTICS FOR LD1117A#18 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified)
Symbol VO VO V O V O VI Id IO SVR VD Parameter Output Voltage Output Voltage Line Regulation Load Regulation Operating Input Voltage Quiescent Current Output Current Supply Voltage Rejection Dropout Voltage VI = 3.8 V Test Conditions IO = 10 mA Tj = 25 oC IO = 0 to 1000 mA VI = 3.3 to 8 V VI = 3.3 to 8 V IO = 0 mA VI = 3.3 V IO = 0 to 1000 mA IO = 100 mA VI 8 V IO = 0 mA VI - VO = 5 V Tj = 25 C IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp IO = 100 mA IO = 500 mA IO = 1000 mA Ta = 25 oC 30ms Pulse
o
Min. 1.764 1.728
Typ. 1.8 1 1 5
Max. 1.836 1.872 6 10 10 10
Unit V V mV mV V mA mA dB
1000 60
1200 80 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2
V V V %/W
V O(pwr) Thermal Regulation
ELECTRICAL CHARACTERISTICS FOR LD1117B#18 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified)
Symbol VO VO V O V O VI Id IO SVR VD Parameter Output Voltage Output Voltage Line Regulation Load Regulation Operating Input Voltage Quiescent Current Output Current Supply Voltage Rejection Dropout Voltage VI = 3.8 V Test Conditions IO = 10 mA Tj = 25 oC IO = 0 to 1200 mA VI = 3.3 to 8 V VI = 3.3 to 8 V IO = 0 mA VI = 3.3 V IO = 0 to 1200 mA IO = 100 mA VI 8 V IO = 0 mA VI - VO = 5 V Tj = 25 oC IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp IO = 100 mA IO = 500 mA IO = 1200 mA Ta = 25 C 30ms Pulse
o
Min. 1.764 1.728
Typ. 1.8 1 1 5
Max. 1.836 1.872 6 10 10 10
Unit V V mV mV V mA mA dB
1200 60
1500 80 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2
V V V %/W
V O(pwr) Thermal Regulation
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LD1117A/B SERIES
ELECTRICAL CHARACTERISTICS FOR LD1117A#25 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified)
Symbol VO VO V O V O VI Id IO SVR VD Parameter Output Voltage Output Voltage Line Regulation Load Regulation Operating Input Voltage Quiescent Current Output Current Supply Voltage Rejection Dropout Voltage VI = 4.5 V Test Conditions IO = 10 mA Tj = 25 oC IO = 0 to 1000 mA VI = 3.9 to 8 V VI = 3.9 to 8 V IO = 0 mA VI = 3.9 V IO = 0 to 1000 mA IO = 100 mA VI 10 V IO = 0 mA VI - VO = 5 V Tj = 25 C IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp IO = 100 mA IO = 500 mA IO = 1000 mA Ta = 25 oC 30ms Pulse
o
Min. 2.45 2.4
Typ. 2.5 1 1 5
Max. 2.55 2.6 6 10 10 10
Unit V V mV mV V mA mA dB
1000 60
1200 80 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2
V V V %/W
V O(pwr) Thermal Regulation
ELECTRICAL CHARACTERISTICS FOR LD1117B#25 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified)
Symbol VO VO V O V O VI Id IO SVR VD Parameter Output Voltage Output Voltage Line Regulation Load Regulation Operating Input Voltage Quiescent Current Output Current Supply Voltage Rejection Dropout Voltage VI = 4.5 V Test Conditions IO = 10 mA Tj = 25 oC IO = 0 to 1200 mA VI = 3.9 to 8 V VI = 3.9 to 8 V IO = 0 mA VI = 3.9 V IO = 0 to 1200 mA IO = 100 mA VI 10 V IO = 0 mA VI - VO = 5 V Tj = 25 oC IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp IO = 100 mA IO = 500 mA IO = 1200 mA Ta = 25 C 30ms Pulse
o
Min. 2.45 2.4
Typ. 2.5 1 1 5
Max. 2.55 2.6 6 10 10 10
Unit V V mV mV V mA mA dB
1200 60
1500 80 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2
V V V %/W
V O(pwr) Thermal Regulation
5/16
LD1117A/B SERIES
ELECTRICAL CHARACTERISTICS FOR LD1117A#28 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified)
Symbol VO VO V O V O VI Id IO SVR VD Parameter Output Voltage Output Voltage Line Regulation Load Regulation Operating Input Voltage Quiescent Current Output Current Supply Voltage Rejection Dropout Voltage VI = 4.85 V Test Conditions IO = 10 mA Tj = 25 oC IO = 0 to 1000 mA VI = 4.25 to 10 V VI = 4.25 to 8 V IO = 0 mA VI = 4.25 V IO = 0 to 1000 mA IO = 100 mA VI 10 V IO = 0 mA VI - VO = 5 V Tj = 25 C IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp IO = 100 mA IO = 500 mA IO = 1000 mA Ta = 25 oC 30ms Pulse
o
Min. 2.793 2.736
Typ. 2.85 1 2 4.5
Max. 2.907 2.964 6 10 10 10
Unit V V mV mV V mA mA dB
1000 60
1200 75 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2
V V V %/W
V O(pwr) Thermal Regulation
ELECTRICAL CHARACTERISTICS FOR LD1117B#28 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified)
Symbol VO VO V O V O VI Id IO SVR VD Parameter Output Voltage Output Voltage Line Regulation Load Regulation Operating Input Voltage Quiescent Current Output Current Supply Voltage Rejection Dropout Voltage VI = 4.85 V Test Conditions IO = 10 mA Tj = 25 oC IO = 0 to 1200 mA VI = 4.25 to 10 V VI = 4.25 to 10 V IO = 0 mA VI = 4.25 V IO = 0 to 1200 mA IO = 100 mA VI 10 V IO = 0 mA VI - VO = 5 V Tj = 25 oC IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp IO = 100 mA IO = 500 mA IO = 1200 mA Ta = 25 C 30ms Pulse
o
Min. 2.793 2.736
Typ. 2.85 1 2 4.5
Max. 2.907 2.964 6 10 10 10
Unit V V mV mV V mA mA dB
1200 60
1500 75 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2
V V V %/W
V O(pwr) Thermal Regulation
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LD1117A/B SERIES
ELECTRICAL CHARACTERISTICS FOR LD1117A#33 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified)
Symbol VO VO V O V O VI Id IO SVR VD Parameter Output Voltage Output Voltage Line Regulation Load Regulation Operating Input Voltage Quiescent Current Output Current Supply Voltage Rejection Dropout Voltage VI = 5.3 V Test Conditions IO = 10 mA Tj = 25 oC IO = 0 to 1000 mA VI = 4.75 to 10 V VI = 4.75 to 8 V IO = 0 mA VI = 4.75 V IO = 0 to 1000 mA IO = 100 mA VI 10 V IO = 0 mA VI - VO = 5 V Tj = 25 C IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp IO = 100 mA IO = 500 mA IO = 1000 mA Ta = 25 oC 30ms Pulse
o
Min. 3.234 3.168
Typ. 3.3 1 1 5
Max. 3.366 3.432 6 10 10 10
Unit V V mV mV V mA mA dB
1000 60
1200 75 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2
V V V %/W
V O(pwr) Thermal Regulation
ELECTRICAL CHARACTERISTICS FOR LD1117B#33 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified)
Symbol VO VO V O V O VI Id IO SVR VD Parameter Output Voltage Output Voltage Line Regulation Load Regulation Operating Input Voltage Quiescent Current Output Current Supply Voltage Rejection Dropout Voltage VI = 5.3 V Test Conditions IO = 10 mA Tj = 25 oC IO = 0 to 1200 mA VI = 4.75 to 10 V VI = 4.75 to 10 V IO = 0 mA VI = 4.75 V IO = 0 to 1200 mA IO = 100 mA VI 10 V IO = 0 mA VI - VO = 5 V Tj = 25 oC IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp IO = 100 mA IO = 500 mA IO = 1200 mA Ta = 25 C 30ms Pulse
o
Min. 3.234 3.168
Typ. 3.3 1 1 5
Max. 3.366 3.432 6 10 10 10
Unit V V mV mV V mA mA dB
1200 60
1500 75 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2
V V V %/W
V O(pwr) Thermal Regulation
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LD1117A/B SERIES
ELECTRICAL CHARACTERISTICS FOR LD1117A#50 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified)
Symbol VO VO V O V O VI Id IO SVR VD Parameter Output Voltage Output Voltage Line Regulation Load Regulation Operating Input Voltage Quiescent Current Output Current Supply Voltage Rejection Dropout Voltage Test Conditions VI = 7 V IO = 10 mA Tj = 25 oC IO = 0 to 1000 mA VI = 6.4 to 10 V VI = 6.4 to 8 V IO = 0 mA VI = 6.4 V IO = 0 to 1000 mA IO = 100 mA VI 10 V IO = 0 mA VI - VO = 5 V Tj = 25 C IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp IO = 100 mA IO = 500 mA IO = 1000 mA Ta = 25 oC 30ms Pulse
o
Min. 4.9 4.8
Typ. 5 1 1 5
Max. 5.1 5.2 6 10 10 10
Unit V V mV mV V mA mA dB
1000 60
1200 80 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2
V V V %/W
V O(pwr) Thermal Regulation
ELECTRICAL CHARACTERISTICS FOR LD1117B#50 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified)
Symbol VO VO V O V O VI Id IO SVR VD Parameter Output Voltage Output Voltage Line Regulation Load Regulation Operating Input Voltage Quiescent Current Output Current Supply Voltage Rejection Dropout Voltage Test Conditions VI = 7 V IO = 10 mA Tj = 25 oC IO = 0 to 1200 mA VI = 6.4 to 10 V VI = 6.4 to 10 V IO = 0 mA VI = 6.4 V IO = 0 to 1200 mA IO = 100 mA VI 10 V IO = 0 mA VI - VO = 5 V Tj = 25 oC IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp IO = 100 mA IO = 500 mA IO = 1200 mA Ta = 25 C 30ms Pulse
o
Min. 4.9 4.8
Typ. 5 1 1 5
Max. 5.1 5.2 6 10 10 10
Unit V V mV mV V mA mA dB
1200 60
1500 80 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2
V V V %/W
V O(pwr) Thermal Regulation
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LD1117A/B SERIES
ELECTRICAL CHARACTERISTICS FOR LD1117ADJ (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified)
Symbol VO VO V O V O VI Id IO SVR VD Parameter Output Voltage Output Voltage Line Regulation Load Regulation Operating Input Voltage Quiescent Current Output Current Supply Voltage Rejection Dropout Voltage VI = 5.3 V Test Conditions IO = 10 mA Tj = 25 oC IO = 0 to 1000 mA VI = 2.75 to 10 V VI = 2.75 to 10 V IO = 0 mA VI = 2.75 V IO = 0 to 1000 mA IO = 100 mA VI 8 V IO = 0 mA VI - VO = 5 V Tj = 25 C IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp IO = 100 mA IO = 500 mA IO = 1000 mA Ta = 25 oC 30ms Pulse
o
Min. 1.225 1.2
Typ. 1.25 1 1 5
Max. 1.275 1.3 6 10 10 10
Unit V V mV mV V mA mA dB
1000 60
1200 80 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2
V V V %/W
V O(pwr) Thermal Regulation
ELECTRICAL CHARACTERISTICS FOR LD1117BDJ (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified)
Symbol VO VO V O V O VI Id IO SVR VD Parameter Output Voltage Output Voltage Line Regulation Load Regulation Operating Input Voltage Quiescent Current Output Current Supply Voltage Rejection Dropout Voltage VI = 5.3 V Test Conditions IO = 10 mA Tj = 25 oC IO = 0 to 1200 mA VI = 2.75 to 10 V VI = 2.75 to 10 V IO = 0 mA VI = 2.75 V IO = 0 to 1200 mA IO = 100 mA VI 8 V IO = 0 mA VI - VO = 5 V Tj = 25 oC IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp IO = 100 mA IO = 500 mA IO = 1200 mA Ta = 25 C 30ms Pulse
o
Min. 1.225 1.2
Typ. 1.25 1 1 5
Max. 1.275 1.3 6 10 10 10
Unit V V mV mV V mA mA dB
1200 60
1500 80 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2
V V V %/W
V O(pwr) Thermal Regulation
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LD1117A/B SERIES
TYPICAL APPLICATIONS: FIGURE 1: Negative Supply
FIGURE 2: Active Terminator for SCSI-2 BUS
FIGURE 3: Circuit for Increasing Output Voltage
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LD1117A/B SERIES
TYPICAL APPLICATIONS (continued): FIGURE 4: Voltage Regulator With Reference
FIGURE 5: Battery Backed-up Regulated Supply
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LD1117A/B SERIES
TYPICAL APPLICATIONS (continued): FIGURE 6: Post-Regulated Dual Supply
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LD1117A/B SERIES
LD1117 ADJUSTABLE: APPLICATION NOTE The LD1117 ADJUSTABLE has a thermal stabilized 1.250.012V reference voltage between the OUT and ADJ pins. IADJ is 60A typ. (120A max.) and I ADJ is 1A typ. (5A max.). R1 is normally fixed to 120. From figure 7 we obtain: VOUT = VREF + R2 (IADJ + IR1) = VREF + R2 (IADJ + VREF / R1) = VREF (1 + R2 / R1) + R2 x IADJ. In normal application R2 value is in the range of few Kohm, so the R2 x IDJ product could not be considered in the VOUT calculation; then the above expression becomes: VOUT = VREF (1 + R2 / R1). In order to have the better load regulation it is important to realize a good Kelvin connection of R1 and R2 resistors. In particular R1 connection must be realized very close to OUT and ADJ pin, while R2 ground connection must be placed as near as possible to the negative Load pin. Ripple rejection can be improved by introducing a 10F electrolitic capacitor placed in parallel to the R2 resistor (see Fig.8) FIGURE 7: Adjustable Output Voltage Application Circuit
FIGURE 8: Adjustable Output Voltage Application with improved Ripple Rejection
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LD1117A/B SERIES
SOT-223 MECHANICAL DATA
mm MIN. a b c d e1 e4 f g l1 l2 L 2.9 0.67 6.7 3.5 6.3 3 0.7 7 3.5 6.5 2.27 4.57 0.2 0.63 1.5 TYP. 2.3 4.6 0.4 0.65 1.6 MAX. 2.33 4.63 0.6 0.67 1.7 0.32 3.1 0.73 7.3 3.7 6.7 114.2 26.4 263.8 137.8 248 118.1 27.6 275.6 137.8 255.9 MIN. 89.4 179.9 7.9 24.8 59.1 mils TYP. 90.6 181.1 15.7 25.6 63 MAX. 91.7 182.3 23.6 26.4 66.9 12.6 122.1 28.7 287.4 145.7 263.8
DIM.
L
l2
e1
a b f
d c e4
C l1
B
C
E
g
P008B
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LD1117A/B SERIES
TO-252 (DPAK) MECHANICAL DATA
mm MIN. A A1 A2 B B2 C C2 D E G H L2 L4 0.6 2.2 0.9 0.03 0.64 5.2 0.45 0.48 6 6.4 4.4 9.35 0.8 1 0.023 TYP. MAX. 2.4 1.1 0.23 0.9 5.4 0.6 0.6 6.2 6.6 4.6 10.1 MIN. 0.086 0.035 0.001 0.025 0.204 0.017 0.019 0.236 0.252 0.173 0.368 0.031 0.039 inch TYP. MAX. 0.094 0.043 0.009 0.035 0.212 0.023 0.023 0.244 0.260 0.181 0.397
DIM.
H
A
C2
C
DETAIL "A"
A1
L2
D DETAIL "A" B
=
=
3
B2
=
=
G
E
2
L4
1
=
=
A2
0068772-B
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LD1117A/B SERIES
Information furnished is believed to be accurate and reliable. However, STMicroelectronic s assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems withoutexpress written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics (c) 2000 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com .
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