LINEAR INTEGRATED CIRCUIT LOW-DROPOUT VOLTAGE REGULATOR TO-9

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LINEAR INTEGRATED CIRCUIT LOW-DROPOUT VOLTAGE REGULATOR TO-9

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LM2954
LINEAR INTEGRATED CIRCUIT
LOW-DROPOUT VOLTAGE REGULATOR
TO-92
Contek LM2954 monolithic integrated voltage regulator with dropout voltage, quiescent current. includes many features that suitable different applications. Available 3-pin ,DIP-8 SOP-8 packages.
SOP-8
FEATURES
DIP-8
*High accuracy 3.0, 3.3, fixed output TO-92, DIP-8 SOP-8 package. *Extremely quiescent current dropout voltage. *Extremely tight load line regulation. *Current thermal limiting. *Very temperature coefficient. *Logic controlled shutdown error flag available package. *Output voltage programmable package.
APPLICATIONS
*Battery powered equipment. *High efficient linear regulator down 1.24V. *Cellular phones.
ORDERING INFORMATION
PART NUMBER
Contek LM2954-3.0 Contek LM2954-3.3 Contek LM2954 Contek LM2954F Contek LM2954P
TEMPERATURE RANGE
+125 +125 +125 +125 +125
PACKAGE
3-Pin TO-92 3-Pin TO-92 3-Pin TO-92 8-Pin SOP-8 8-Pin DIP-8 plastic plastic plastic plastic plastic
ACCURACY
1.0% 1.0% 1.0% 1.0% 1.0%
CONFIGURATIONS
Contek LM2954
OUTPUT SENSE SHUTDOWN
INPUT FEEDBACK
Contek LM2954
OUTPUT
INPUT
ERROR
TO-92 Plastic Package Bottom View
SOP-8 DIP-8 PACKAGE
Fig.
Contek Microelectronics Co.,Ltd.
CONTEK
http://www.contek-ic.com E-mail:sales@contek-ic.com
LM2954
BLOCK DIAGRAM
UNRAGULATED
LINEAR INTEGRATED CIRCUIT
FEEDBACK
INPUT
OUTPUT
5V150mA MAX.
SENSE 182k ERROR AMPLIFIER 60mV ERROR DETECTION COMPARATOR
1.5mF
FROM CMOS ORTTL
SHUT DOWN
5VTAP
330K
ERROR
1.23
TOCMOS
Contek
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage Feedback Voltage Shutdown Voltage Comparator Output Voltage Storage temperature Operating Junction Temperature
SYMBOL
Vfeedback Vshutdown Tstr
VALUE
-0.3 -1.5 -0.3 -0.3 +150 +125
UNIT
ELECTRICAL CHARACTERISTICS
PARAMETER
Output Voltage
Tested Tj=25 C,VIN=6V,I L=100mA L=1F.unless otherwise specified)
PART NUMBER
Contek Contek Contek Contek Contek Contek Contek Contek Contek Contek Contek Contek Contek Contek Contek LM2954-3.0 LM2954-3.3 LM2954-3.7 LM2954 LM2954 LM2954-3.0 LM2954-3.3 LM2954-3.7 LM2954 LM2954 LM2954-3.0 LM2954-3.3 LM2954-3.7 LM2954 LM2954
TEST CONDITIONS
TJ=25
MIN.
2.97 3.27 3.66 4.95 2.94 3.23 3.63 2.94 3.23 3.66
TYP.
MAX.
3.03 3.33 3.74 5.05 3.06 3.36 3.77 3.06 3.36 3.74
UNIT
(note C<=TJ<=+85
(note 100mA<=IL<=300 Tj<=Tj(max) (note
Output Voltage Temperature Coefficient Line Regulation
ppm/
6V<=VIN<=30V
Contek Microelectronics Co.,Ltd.
CONTEK
http://www.contek-ic.com E-mail:sales@contek-ic.com
LM2954
PARAMETER
Load Regulation Dropout Voltage
LINEAR INTEGRATED CIRCUIT
PART NUMBER TEST CONDITIONS
100mA<=IL<=300 IL=100mA IL=200mA (note IL=100mA IL=200mA VIN=4.5V,I L=100mA Vout=0 CL=1mF CL=200mF CL=3.3mF (Bypass=0.01mF) pins Contek 2954
MIN.
0.75
TYP.
0.12
MAX.
0.14
UNIT
Ground Current
Dropout Ground Current Current Limit Output Noise 10Hz 100KHz
8-Pin Version Only
Reference Voltage Reference Voltage Feedback Bias Current Reference Voltage Temperature Coefficient Feedback Bias Current Temperature Coefficient (Note 1.22 1.19 1.235 1.25 1.27 ppm/
Error Comparator
Output Leakage Current Output Voltage Upper Threshold Voltage Lower Threshold Voltage Hysteresis VOH=30V VIN=4.5V IOL=400mA (Note (Note (Note Low(Regulator High(Regulator OFF) Vshutdown=2.4V Vshutdown=30V Vshutdown>=2V,V IN<=30V, Vout=0, Feedback tied Tap. 0.70
Shutdown Input
Input Logic Voltage
Shutdown Input Current Regulator Output Current Shutdown
Note Additional conditions 8-pin versions feedback tied Output tied Output Sense (Vout=5V) Vshutdown<=0.8V. Note Dropout Voltage defined input output differential which output voltage drops 100mV below nominal value measured differential. Note Comparator thresholds expressed terms percentage value voltage output.
Contek Microelectronics Co.,Ltd.
CONTEK
http://www.contek-ic.com E-mail:sales@contek-ic.com
LM2954
APPLICATION CIRCUIT
UNRAGULATED
LINEAR INTEGRATED CIRCUIT
3.7V 350mA
FEEDBACK
INPUT
OUTPUT
SENSE
1.5mF
FROM CMOS
SHUT DOWN
ERROR AMPLIFIER 60mV
3.7V
330K
ERROR 1.23 ERROR DETECTION COMPARATOR
CMOS
Contek
DROPOUT REGULATOR
CURRENT LIMIT SECTION
t+0.5V
0.05
2N3906
Contek D65H0
4.7M
ERROR
Contek LM2954
0.033
Vout
Vout=1.23V*(1+R1/R2)
output
internal wire
Resistors.Wire
Fig.2
Contek Microelectronics Co.,Ltd.
CONTEK
http://www.contek-ic.com E-mail:sales@contek-ic.com
LM2954
LINEAR INTEGRATED CIRCUIT
Contek Contek Contek Contek LM2954-3.0 LM2954-3.3 LM2954-3.7 LM2954-5.0
Vout
Fig.
Contek Microelectronics Co.,Ltd.
CONTEK
http://www.contek-ic.com E-mail:sales@contek-ic.com

LINEAR INTEGRATED CIRCUIT LOW-DROPOUT VOLTAGE REGULATOR TO-9

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