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| LP2981 Datasheet, PDF (4/16 Pages) National Semiconductor (TI) – Micropower 100 mA Ultra Low-Dropout Regulator | |||
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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Storage Temperature Range
Operating Junction Temperature
Range
Lead Temperature
(Soldering, 5 sec.)
ESD Rating (Note 2)
â65ËC to +150ËC
â40ËC to +125ËC
260ËC
2 kV
Power Dissipation (Note 3)
Input Supply Voltage (Survival)
Input Supply Voltage (Operating)
Shutdown Input Voltage (Survival)
Output Voltage (Survival, (Note 4))
IOUT (Survival)
Input-Output Voltage
(Survival, (Note 5))
Internally Limited
â0.3V to +16V
2.1V to +16V
â0.3V to +16V
â0.3V to +9V
Short Circuit Protected
â0.3V to +16V
Electrical Characteristics
Limits in standard typeface are for TJ = 25ËC, and limits in boldface type applyover the full operating temperature range. Un-
less otherwise specified: VIN = VO(NOM) + 1V, CIN = 1 µF, IL = 1 mA, COUT = 4.7 µF,VON/OFF = 2V.
Symbol
Parameter
Conditions
Typ
LP2981AI-XX
LP2981I-XX
Units
(Note 6)
(Note 6)
Min
Max
Min
Max
âVO
Output Voltage
Tolerance
IL = 1mA
1 mA < IL < 100 mA
â0.75
â1.0
â2.5
0.75
1.0
2.5
â1.25
â2.0
â3.5
1.25
2.0
3.5
%VNOM
VINâ VO
Output Voltage
Line Regulation
Dropout Voltage
(Note 7)
VO(NOM) + 1V
⤠VIN ⤠16V
IL = 0
0.007
1
0.014
0.032
3
5
0.014
%/V
0.032
3
mV
5
IL = 1 mA
7
10
10
15
15
IL = 25 mA
70
100
100
150
150
IL = 100 mA
200
250
250
375
375
IGND
Ground Pin Current
IL = 0
65
95
95
µA
125
125
IL = 1 mA
80
110
110
170
170
IL = 25 mA
200
300
300
550
550
VON/OFF
ON/OFF Input Voltage
(Note 8)
IL = 100 mA
VON/OFF < 0.3V
VON/OFF < 0.15V
High = O/P ON
Low = O/P OFF
600
800
800
1500
1500
0.01
0.8
0.8
0.05
2
2
1.4
1.6
1.6
V
0.50
0.15
0.15
ION/OFF
ON/OFF Input Current VON/OFF = 0
0.01
â1
â1
µA
VON/OFF = 5V
5
15
15
IO(PK)
Peak Output Current
VOUT ⥠VO(NOM) â 5%
400
150
150
mA
en
Output Noise
BW = 300 Hzâ50 kHz,
160
µV
Voltage (RMS)
COUT = 10 µF
Ripple Rejection
f = 1 kHz
63
dB
COUT = 10 µF
IO(MAX)
Short Circuit Current
RL = 0 (Steady State)
150
mA
(Note 9)
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