SNVS764N – JANUARY 2000 – REVISED MAY 2013
ELECTRICAL CHARACTERISTICS
(continued)
LP2951
Parameter
Load Regulation
(7)
Dropout Voltage
(9)
Conditions
(1)
LP2950AC-XX
LP2951AC-XX
Typ
0.04
Tested
Limit
(2)
0.1
0.2
80
50
450
380
75
8
120
140
12
14
110
160
170
200
200
220
0.05
430
160
100
0.2
0.05
430
160
100
160
110
8
600
380
75
150
50
Design Typ
Limit
(4)
0.1
LP2950C-XX
LP2951C-XX
Tested
Limit
(2)
0.2
0.3
80
150
450
600
120
140
12
14
170
200
200
220
0.2
Design
Limit
(4)
Typ
0.04
Tested
Limit
(2) (3)
0.1
0.3
80
Units
100
μA ≤
I
L
≤
100 mA
I
L
= 100
μA
% max
% max
mV
max
mV
max
mV
max
mV
max
μA
max
μA
max
mA
max
mA
max
μA
max
μA
max
mA
max
mA
max
%/W
max
μV
rms
μV
rms
μV
rms
50
I
L
= 100 mA
380
Ground Current
I
L
= 100
μA
I
L
= 100 mA
75
8
150
450
600
120
140
12
14
Dropout Ground
Current
Current Limit
V
in
= (V
O
NOM
−
0.5)V
I
L
= 100
μA
V
out
= 0
110
160
170
200
200
220
Thermal Regulation
Output Noise, 10 Hz to
100 kHz
See
(10)
C
L
= 1μF (5V Only)
C
L
= 200
μF
C
L
= 3.3
μF
(Bypass = 0.01
μF
Pins 7 to 1 (LP2951-N)
0.05
430
160
100
0.2
8-pin Versions Only
Reference Voltage
1.23
5
LP2951
1.25
1.26
1.22
1.2
1.23
5
LP2951AC-XX
1.25
1.26
1.22
1.2
1.27
1.19
20
20
40
60
50
20
1.23
5
LP2951C-XX
1.26
1.27
1.21
1.2
1.285
1.185
40
60
V max
V max
V min
V min
V max
V min
nA max
nA max
ppm/°C
Reference Voltage
Feedback Pin Bias
Current
Reference Voltage
Temperature
Coefficient
Feedback Pin Bias
Current Temperature
Coefficient
(9)
See
(11)
1.27
1.19
20
40
60
See
(12)
20
0.1
0.1
0.1
nA/°C
Dropout Voltage is defined as the input to output differential at which the output voltage drops 100 mV below its nominal value
measured at 1V differential. At very low values of programmed output voltage, the minimum input supply voltage of 2V (2.3V over
temperature) must be taken into account.
(10) Thermal regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied, excluding load
or line regulation effects. Specifications are for a 50 mA load pulse at V
IN
= 30V (1.25W pulse) for T = 10ms.
(11) V
REF
≤
V
OUT
≤
(V
IN
−
1V), 2.3V
≤
V
IN
≤
30V, 100
μA ≤
I
L
≤
100 mA, T
J
≤
T
JMAX
.
(12) Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
Copyright © 2000–2013, Texas Instruments Incorporated
5
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