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| LP2978_09 Datasheet, PDF (3/8 Pages) National Semiconductor (TI) – Micropower SOT, 50 mA Low-Noise Ultra Low-Dropout Regulator Designed for Use with Very Low ESR Output Capacitors | |||
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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)
â65°C to +150°C
â40°C to +125°C
260°C
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,
â(Note 5))
Internally Limited
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 = 25°C. and limits in boldface type apply over the full operating temperature range. Unless
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
ÎVO
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
VINâVO
IGND
VON/OFF
ION/OFF
en
IO(SC)
IO(PK)
Dropout Voltage
(Note 7)
IL = 0
IL = 1 mA
IL = 10 mA
IL = 50 mA
Ground Pin Current
IL = 0
IL = 1 mA
IL = 10 mA
IL = 50 mA
ON/OFF Input Voltage
(Note 8)
ON/OFF Input Current
Output Noise
Voltage (RMS)
Ripple Rejection
Short Circuit Current
Peak Output Current
VON/OFF < 0.3V
VON/OFF < 0.15V
High = O/P ON
Low = O/P OFF
VON/OFF = 0
VON/OFF = 5V
BW = 300 Hz to 50 kHz,
COUT = 10 µF
CBYPASS = 10 nF
f = 1 kHz, CBYPASS = 10 nF
COUT = 10 µF
RL = 0 (Steady State)
VOUT ⥠Vo(NOM) â5%
1
3
3
5
5
7
10
10
15
15
mV
40
60
60
90
90
120
150
150
225
225
65
95
95
125
125
75
110
110
170
170
120
220
220
µA
400
400
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
0.01
â2
5
15
â2
µA
15
30
µV
45
dB
400
mA
350
mA
3
100935 Version 6 Revision 2 Print Date/Time: 2009/04/23 16:08:18
www.national.com
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