LP2954 Datasheet, PDF (3/13 Pages) National Semiconductor (TI) – 5V and Adjustable Micropower Low-Dropout Voltage Regulators

Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Operating Junction Temperature
Range
LP2954AI/LP2954I
−40˚C to +125˚C
Storage Temperature Range
Lead Temperature
(Soldering, 5 seconds)
Power Dissipation (Note 2)
Input Supply Voltage
ESD Rating
−65˚C to +150˚C
260˚C
Internally Limited
−20V to +30V
2 kV
Electrical Characteristics
Limits in standard typeface are for T_J = 25˚C, bold typeface applies over the −40˚C to +125˚C temperature range. Limits
are guaranteed by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods. Un-
less otherwise noted: V_IN = 6V, I_L = 1 mA, C_L = 2.2 µF.
Symbol
Parameter
Conditions
Typical
2954AI
2954I
Units
Min
Max
Min
Max
V_O
Output Voltage
5.0
4.975
5.025
4.950
5.050
V
4.940
5.060
4.900
5.100
Output Voltage
1 mA ≤ I_L ≤ 250 mA
(Note 3)
5.0
4.930
5.070
4.880
5.120
20
100
150
ppm/˚C
Temp. Coefficient
Line Regulation
V_IN = 6V to 30V
0.03
0.10
0.20
%
0.20
0.40
Load Regulation
I_L = 1 to 250 mA
I_L = 0.1 to 1 mA
0.04
0.16
0.20
0.20
0.30
%
(Note 4)
V_IN–V_O Dropout Voltage
I_L = 1 mA
60
(Note 5)
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 I_L = 1 mA
90
(Note 6)
150
150
µA
180
180
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
V_IN = 4.5V
170
170
Current at Dropout
120
210
210
µA
(Note 6)
I_LIMIT
Current Limit
V_OUT = 0V
380
500
500
mA
530
530
Thermal Regulation (Note 7)
0.05
0.2
0.2
%/W
e_n
Output Noise
C_L = 2.2 µF
400
Voltage
(10 Hz to 100 kHz) C_L = 33 µF
260
I_L = 100 mA
C_L=33µF(Note 9)
80
µV RMS
3
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