LP2952 Datasheet, PDF (5/24 Pages) National Semiconductor (TI) – Adjustable Micropower Low-Dropout Voltage Regulators

All Voltage Options (Continued)
Electrical Characteristics (Continued)
Limits in standard typeface are for T_J = 25˚C, bold typeface applies over the full operating temperature range. Limits are guar-
anteed by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods. Unless other-
wise specified: V_IN = V_O(NOM) + 1V, I_L = 1 mA, C_L = 2.2 µF for 5V parts and 4.7µF for 3.3V parts. Feedback pin is tied to V
Tap pin, Output pin is tied to Output Sense pin.
Symbol
Parameter
Conditions
Typical LP2952AI, LP2953AI, LP2952I, LP2953I,
LP2952AI-3.3,
LP2952I-3.3,
LP2953AI-3.3,
LP2953I-3.3
LP2953AM
(Notes 16, 17)
Units
Min
Max
Min
Max
Output Voltage Load I_L = 1 mA to 250 mA
0.04
Regulation (Note 6)
I_L = 0.1 mA to 1 mA
0.16
0.20 %
0.20
0.30
V_IN–V_O Dropout Voltage
(Note 7)
I_L = 1 mA
60
100
100
mV
150
150
I_L = 50 mA
240
300
300
420
420
I_L = 100 mA
310
400
400
520
520
I_L = 250 mA
470
600
600
800
800
I_GND
Ground Pin Current
(Note 8)
I_L = 1 mA
130
170
170
µA
200
200
I_L = 50 mA
1.1
2
2
mA
2.5
2.5
I_L = 100 mA
4.5
6
6
8
8
I_L = 250 mA
21
28
28
33
33
I_GND
Ground Pin Current at V_IN = V_O(NOM) −0.5V
165
Dropout
I_L = 100 µA
I_GND
Ground Pin Current at V_SHUTDOWN ≤ 1.1V
105
Shutdown (Note 8)
210
210
µA
240
240
140
140
µA
I_LIMIT
Current Limit
V_OUT = 0
380
500
500
mA
530
530
Thermal Regulation
(Note 10)
0.05
0.2
0.2
%/W
e_n
V_REF
Output Noise Voltage
(10 Hz to 100 kHz)
I_L = 100 mA
Reference Voltage
C_L = 4.7 µF
C_L = 33 µF
C_L = 33 µF (Note 11)
(Note 12)
Reference Voltage Line
Regulation
V_IN = 2.5V to V_O(NOM) + 1V
V_IN = V_O(NOM) + 1V to 30V
(Note 13)
Reference Voltage Load I_REF = 0 to 200 µA
Regulation
Reference Voltage
Temp. Coefficient
(Note 5)
400
260
80
1.230
0.03
0.25
20
1.215
1.205
µV
RMS
1.245
1.255
0.1
0.2
0.4
0.6
1.205 1.255
V
1.190 1.270
0.2
%
0.4
0.8
%
1.0
ppm/˚C
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