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| LP2978 Datasheet, PDF (3/7 Pages) National Semiconductor (TI) – Micropower SOT, 50 mA Low-Noise 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 Temp. (Soldering, 5 sec.)
ESD Rating (Note 2)
Power Dissipation (Note 3)
â65ËC to +150ËC
â40ËC to +125ËC
260ËC
2 kV
Internally Limited
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))
â0.3V to +16V
2.5V 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 apply over the full operating temperature range. Un-
less otherwise specified: VIN = VO(NOM) + 1V, IL = 1 mA, CIN = 1 µF, COUT = 4.7 µF, VON/OFF = 2V.
LP2978AI-X.X
LP2978I-X.X
Symbol
Parameter
Conditions
Typ
(Note 6)
(Note 6)
Units
Min
Max
Min
Max
âVO
Output Voltage
IL = 1 mA
Tolerance
1 mA ⤠IL ⤠50 mA
â1.0
1.0
â1.5
1.5
â1.5
1.5
â2.5
2.5
%VNOM
â2.5
2.5
â3.5
3.5
Output Voltage
Line Regulation
VO(NOM)+1V ⤠VIN ⤠16V
0.007
0.014
0.032
0.014
%/V
0.032
VINâ VO
Dropout Voltage
(Note 7)
IL = 0
1
3
3
5
5
IL = 1 mA
IL = 10 mA
7
10
15
40
60
90
10
15
mV
60
90
IL = 50 mA
120
150
150
225
225
IGND
Ground Pin Current
IL = 0
65
95
95
125
125
IL = 1 mA
75
110
110
170
170
IL = 10 mA
120
220
220
µA
400
400
VON/OFF
IL = 50 mA
ON/OFF Input Voltage
(Note 8)
VON/OFF < 0.3V
VON/OFF < 0.15V
High = O/P ON
Low = O/P OFF
350
600
600
1000
1000
0.01
0.8
0.8
0.05
2
2
1.4
1.6
1.6
V
0.55
0.15
0.15
ION/OFF
ON/OFF Input Current VON/OFF = 0
0.01
â2
VON/OFF = 5V
5
15
en
Output Noise
BW = 300 Hz to 50 kHz,
Voltage (RMS)
COUT = 10 µF
30
CBYPASS = 10 nF
Ripple Rejection
f = 1 kHz, CBYPASS = 10 nF
45
COUT = 10 µF
â2
µA
15
µV
dB
IO(SC)
Short Circuit Current RL = 0 (Steady State)
400
mA
IO(PK)
Peak Output Current VOUT ⥠Vo(NOM) â5%
350
mA
Note 1: âAbsolute Maximum Ratingsâ indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the
device outside of its rated operating conditions.
Note 2: The ESD rating of pins 3 and 4 is 1 kV.
3
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