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@vic
AV2950/2951
LINEAR INTEGRATED CIRCUIT
100 mA LOW-DROPOUT VOLTAGE REGULATOR
DESCRIPTION
The @vic AV2950/2951 is a monolithic integrated voltage regulator with low dropout voltage, and low quiescent current. It includes many features that suitable for different applications. Available in 3-pin TO-92, DIP-8 and SOP-8 packages.
1
TO-92
SOP-8
FEATURES
*High accuracy 2.5, 3.0, 3.3, 3.6 or 5V fixed output for TO-92, SOP-8 package. *Extremely low quiescent current and dropout voltage. *Extremely tight load and line regulation. *Current and thermal limiting. *Very low temperature coefficient. *Logic controlled shutdown and error flag available for DIP and SOP package. *Output voltage programmable for DIP and SOP package.
DIP-8
APPLICATIONS
*Battery powered equipment. *High efficient linear regulator down to 1.24V. *Cellular phones.
QW-R102-001,G
@vic
AV2950/2951
LINEAR INTEGRATED CIRCUIT
PIN CONFIGURATIONS
UTC AV2950
1 2 3
OUTPUT GND
INPUT
TO-92 Plastic Package Bottom View
OUTPUT SENSE SHUTDOWN
1
2
8
INPUT FEEDBACK 5V TAP
3
4
AV2951 2951
7
6
GND
5
ERROR
SOP-8 OR DIP-8 PACKAGE FOR @vic AV2951
OUTPUT NC SHUTDOWN
1
8
7
6
5
INPUT NC NC
2
3
4
2
AV2950
GND
ERROR
SOP-8 OR DIP-8 PACKAGE FOR @vic AV2950
Fig.1
QW-R102-001,G
@vic
AV2950/2951
LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
UNRAGULATED DC
FEEDBACK
7
INPUT
8
OUTPUT
1
5V 150mA MAX.
SENSE
182k
2
6
1.5 F
FROM CMOS OR TTL
SHUT DOWN
3
ERROR AMPLIFIER
5V TAP
60k
330K
60mV
ERROR 1.23 REF ERROR DETECTION COMPARATOR
5
TO CMOS OR TTL
GND
4
FOR @vic AV2951
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage Feedback Voltage Shutdown Voltage Storage Temperature Operating Junction Temperature
SYMBOL Vcc Vfeedback Vshutdown Tstr Tj
VALUE -0.3~+30 -1.5~+30 -0.3~+30 -65~+150 -40~+125
UNIT V V V C C
QW-R102-001,G
@vic
AV2950/2951
PARAMETER PART NUMBER
AV2950-2.5 AV2950-3.0 AV2950-3.3 AV2950-3.6 AV2950-5.0 AV2951 AV2950-2.5 AV2950-3.0 AV2950-3.3 AV2950-3.6 AV2950-5.0 AV2951 AV2950-2.5 AV2950-3.0 AV2950-3.3 AV2950-3.6 AV2950-5.0 AV2951
LINEAR INTEGRATED CIRCUIT
TEST CONDITION
TJ=25C MIN 2.45 2.94 3.23 3.53 4.90 2.45 2.94 3.23 3.53 4.90 2.45 2.94 3.23 3.53 4.90 20 6VVIN30V 100AIL100 mA IL=100A IL=100mA (note 2) IL=100A IL=100mA VIN=4.5V,IL=100A Vout=0 CL=1F CL=200F CL=3.3F (Bypass=0.01F pins 7 to (utc2951)) 0.03 0.04 50 380 75 8 110 160 0.1 0.1 80 450 120 12 170 200 TYP 2.5 3.0 3.3 3.6 5.0 2.5 3.0 3.3 3.6 5.0 2.5 3.0 3.3 3.6 5.0 MAX 2.55 3.06 3.36 3.67 5.10 2.55 3.06 3.36 3.67 5.10 2.55 3.06 3.36 3.67 5.10 100 0.2 0.2 150 600 140 14 200 220 430 160 100
ELECTRICAL CHARACTERISTICS
(Tested at Tj=25C, VIN=6V, IL=100A and CL=1F, unless otherwise specified)
UNIT
Output Voltage
V
(note 1) -25CTJ+85C
V
Output Voltage
(note 1) 100AIL100 mA Tj<=Tj(max)
V
(note 1) ppm/C % % mV A mA A mA
Output Voltage Temperature Coefficient Line Regulation Load Regulation Dropout Voltage Ground Current Dropout Ground Current Current Limit Output Noise 10Hz ~ 100KHz
V
For LP2951 8-Pin version only
Reference Voltage Reference Voltage Feedback pin Bias Current Reference Voltage Temperature Coefficient Feedback Bias Current temperature Coefficient (Note 4) 1.22 1.19 1.235 20 50 0.1 VOH=30V VIN=4.5V, IOL=400A (Note 3) (Note 3) (Note 3) 1 250 3.2 7.6 15 1.25 1.27 40 V V nA ppm/C nA/C A mV %VO %VO mV
Error Comparator
Output Leakage Current Output Low Voltage Upper Threshold Voltage Lower Threshold Voltage Hysteresis
QW-R102-001,G
@vic
AV2950/2951
PART NUMBER
LINEAR INTEGRATED CIRCUIT
TEST CONDITION
MIN TYP 1.3 Low(Regulator ON) High(Regulator OFF) Vshutdown=2.4V Vshutdown=30V Vshutdown2V, VIN30V, Vout=0, Feedback pin tied to 5V Tap. 0.70 2.0 30 450 3 50 600 10 A A A V MAX
PARAMETER Shutdown Input
Input Logic Voltage
UNIT
Shutdown Pin Input Current Regulator Output Current Shutdown
Note 1: Additional conditions for 8-pin versions are feedback tied to 5V Tap an Output tied to Output Sense (Vout=5V) and Vshutdown<=0.8V. Note 2:Dropout Voltage is defined as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 1V differential. Note 3:Comparator thresholds are expressed in terms of percentage value of voltage output. Note 4:VrefVout(Vin-1V), 2.3VVin30V, 100AIL100mA, TJTJMAX
QW-R102-001,G
@vic
AV2950/2951
LINEAR INTEGRATED CIRCUIT
APPLICATION CIRCUIT (10 Ampere Low Dropout Regulator)
CURRENT LIMIT SECTION +VIN=Vout+0.5V
680
0.05
2N3906
470
UTC D65H0
4.7M
8 +VIN
ERROR
5
10k
+VOUT 100m A
UTC LP2951
3
SD FB GND 4
R1
7
100F 1% 4.7F
220 20k
Vout
1
R2 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
Fig.2
Vin
Vout
Fig.3
QW-R102-001,G
@vic
6 5
AV2950/2951
Fig.4 Dropout Characteristics
150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 01
LINEAR INTEGRATED CIRCUIT
Fig.5 Input Current
600
TYPICAL PERFORMANCE CHARACTERISTICS
Fig. 6 Dropout Voltage
RL=50
500 400 300
IL=100mA
OUTPUT VOLTAGE(V)
3 2 1 0
RL=50
DROPOUT VOLTAGE(mV)
4
RL=50k
INPUT CURRENT(mA)
100 50 0
IL=100A
0
1
INPUT VOLTAGE(V)
2
3
4
5
6
2
INPUT VOLTAGE(V)
34
56
78
9 10 11 12
-75 -50
-25
0
25
50
75
100 125 150
TEMPERATURE(C)?
Fig. 7 Ground Pin Current
8
Fig. 8 Ground Pin Current
Fig. 9 Shutdown Threshold Voltage
1.8 1.6
120 110
m A)
100 90
Shutdown Threshold Voltage(V)
75 100 125 150
7
QUIESCENT CURRENT(
VIN=6V IL=100A
QUIESCENT CURRENT(mA)
6
V IN=6V IL=100mA
1.4 1.2 1.0 0.8 0.6
-75 -50 -25 0 25 50 75 100 125 150
80 70 60 50 -75 -50 -25 0 25 50 75 100 125 150
5
4 -75 -50 -25 0 25 50
TEMPERATURE(C)?
TEMPERATURE(C)?
TEMPERATURE(C)
Fig. 10 Short Circuit Current
500
Fig. 11 Dropout Voltage
400
170
SHORT CIRCUIT CURRENT(mA)
160 150 140 130 120 110 100 -75 -50 -25 0 25 50 75 100 125 150
Dropout Voltage(mV)
300
200
100
0 0.1 1 10 100
TEMPERATURE(C)?
OUTPUT CURRENT(mA)
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.
QW-R102-001,G

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