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UNISONIC TECHNOLOGIES CO., LTD LM2954
300 mA LOW-DROPOUT VOLTAGE REGULATOR
DESCRIPTION
The UTC LM2954 is a monolithic integrated voltage regulator with low dropout voltage, and low quiescent current. It includes many features that suitable for different applications with TO-92, DIP-8, SOP-8 and SOT-223 packages.
LINEAR INTEGRATED CIRCUIT
FEATURES
*High Accuracy Fixed Output. *Output Voltage Programmable and Logic Controlled Shutdown And Error Flag Available for DIP and SOP Package. *Extremely Low Quiescent Current And Dropout Voltage. *Extremely Tight Load And Line Regulation. *Current and Thermal Limiting. *Very low Temperature Coefficient.
ORDERING INFORMATION
Normal LM2954-xx-AA3-R LM2954-xx-D08-T LM2954-xx-S08-R LM2954-xx-S08-T LM2954-xx-T92-B LM2954-xx-T92-K Order Number Lead Free Plating LM2954L-xx-AA3-R LM2954L-xx-D08-T LM2954L-xx-S08-R LM2954L-xx-S08-T LM2954L-xx-T92-B LM2954L-xx-T92-K Halogen Free LM2954G-xx-AA3-R LM2954G-xx-D08-T LM2954G-XX-S08-R LM2954G-xx-S08-T LM2954G-xx-T92-B LM2954G-xx-T92-K Package SOT-223 DIP-8 SOP-8 SOP-8 TO-92 TO-92 Pin assignment 1 2 3 I G O refer to Pin Configurations O O G G I I Packing Tape Reel Tube Tape Reel Tube Tape Box Bulk
Note: 1. Pin assignment: I: Vin 2. xx: Output Voltage
O: VOUT
G: GND
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LM2954
MARKING INFORMATION
PACKAGE VOLTAGE CODE
LINEAR INTEGRATED CIRCUIT
MARKING
SOT-223
33:3.3V 50:5.0V
TO-92
3.3:3.3V 5.0:5.0V
UTC LM2954
VOLTAGE CODE 1
L:LEAD PLATING G:HALOGEN FREE DATA CODE
3.3:3.3V 5.0:5.0V
UTC
DATA CODE L:LEAD PLATING G:HALOGEN FREE
2954
VOLTAGE CODE
SOP-8/DIP-8
ADJ
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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LM2954
PIN CONFIGURATIONS
UTC LM2954
LINEAR INTEGRATED CIRCUIT
1
2
3
OUTPUT
INPUT
GND
TO-92 Plastic Package Bottom View
UTC LM2954
INPUT
GND
OUTPUT
SOT-223 Package
OUTPUT
1 2 UTC LM2954
8 7 6 5
INPUT
SENSE
FEEDBACK
SHUTDOWN
3
4
5V TAP
GND
ERROR
SOP-8 or DIP-8 Package
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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LM2954
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
UNREGULATED DC
FEEDBACK
INPUT
OUTPUT
5V 150mA MAX.
SENSE 182k FROM CMOS OR TTL SHUT DOWN 60mV ERROR AMPLIFIER 60k ERROR 1.23 REF ERROR DETECTION COMPARATOR TO CMOS OR TTL GND 5V TAP 330K 1.5 F
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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LM2954
ABSOLUTE MAXIMUM RATINGS
LINEAR INTEGRATED CIRCUIT
PARAMETER SYMBOL VALUE UNIT Supply Voltage VCC -0.3 ~ +30 V Feedback Voltage VFB -1.5 ~ +30 V Shutdown Voltage VSHDN -0.3 ~ +30 V Comparator Output Voltage VOUT -0.3 ~ +30 V Junction Temperature TJ +125 C Operating Temperature TOPR -40 ~ +85 C Storage temperature TSTG -40 ~ +150 C Note: 1.Absolute maximum ratings are those values beyond which the device which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2.The device is guaranteed to meet performance specification within 0C~+70C operating temperature range and assured by design from -20C~+85C, characteristic and correlation with static process control.
ELECTRICAL CHARACTERISTICS(TJ=25C, VIN=6V, IL=100A, CL=1F, unless otherwise specified)
PARAMETER LM2954-3.3 Output Voltage LM2954-5.0 Output Voltage Temperature Coefficient Line Regulation Load Regulation Dropout Voltage Ground Current Dropout Ground Current Current Limit Output Noise (10Hz to 100KHz) LM2954-ADJ For 8-Pin Version Only Reference Voltage Reference Voltage Feedback Pin Bias Current Reference Voltage Temperature Coefficient Feedback Bias Current Temperature Coefficient SYMBOL VOUT TEST CONDITIONS TJ=25C MIN. 3.23 4.90 20 TYP. 3.3 5.0 0.1 0.2 380 0.075 8 300 450 0.12 12 MAX. UNIT 3.37 V 5.10 100 ppm/C 0.2 % 0.5 400 mV 600 0.23 mA 14 230 A mA 430 V 160 100 1.25 1.27 20 50 0.1 40 V V nA ppm/C nA/C
TCVO VOUT 6VVIN30V VOUT 100AIL300 mA IL=100mA VD IL=200mA (note 2) IL=100A IGND IL=200mA ID VIN=4.5V,IL=100A ILIMIT VOUT=0 CL=1F eN CL=200F CL=3.3F VREF VREF IB(FB) TCVREF TCIO VREFVOUT(VIN-1V), 2.3VVIN18V, 100AIL100mA, TJTJMAX
1.22 1.19
1.235
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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LM2954
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER Error Comparator Output Leakage Current Output Low Voltage Upper Threshold Voltage Lower Threshold Voltage Hysteresis Shutdown Input Input Logic Voltage SYMBOL IO(LEAK) VOL VTHD(UP) VTHD(LOW) VHYS VI(LOG)
LINEAR INTEGRATED CIRCUIT
TEST CONDITIONS VOH=30V VIN=4.5V, IOL=400A (Note 3) (Note 3) (Note 3)
MIN.
TYP.
MAX. 1 250
UNIT A mV %VOUT %VOUT mV
3.2 7.6 15
Low (Regulator ON) 1.3 0.70 High (Regulator OFF) 2.0 VSHDN=2.4V 30 50 Shutdown Pin Input Current II(SHDN) 450 600 VSHDN=30V VSHDN2V,VIN30V, VOUT=0, Regulator Output Current Shutdown IO(SHDN) 3 10 Feedback pin tied to 5V Tap. Note 1: Additional conditions for 8-pin versions are feedback tied to 5V Tap an Output tied to Output Sense (VOUT=5V) and VSHDN0.8V. Note 2: Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV its nominal value measured at 1V differential. Note 3: Comparator thresholds are expressed in terms of percentage value of voltage output.
V A A A
below
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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LM2954
APPLICATION CIRCUIT (10A Low Dropout Regulator) For 8 Pins
CURRENT LIMIT SECTION +VIN=VOUT+0.5V
LINEAR INTEGRATED CIRCUIT
680 2N3906 470
0.05
UTC D65H0
4.7M
8 +VIN ERROR UTC LM2954 3 SD FB GND 4 VOUT 1
5
10k
+VOUT 10 A
R1
100F
7 R2 1% 4.7 F
220 20k
47 0.033F
VOUT=1.23V*(1+R1/R2) For 5V output use internal resistors.Wire pin 6 to 7 and wire pin 2 to +VOUT
For 3 Pins
VIN 1 F UTC LM2954-3.3 UTC LM2954-5.0 VOUT 1 F
UTC 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 UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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