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LP2951CN-3.0 Datasheet(PDF) 1 Page - ON Semiconductor

Part # LP2951CN-3.0
Description  100 mA, Low Power Low Dropout Voltage Regulator
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

LP2951CN-3.0 Datasheet(HTML) 1 Page - ON Semiconductor

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 Semiconductor Components Industries, LLC, 2013
April, 2013 − Rev. 26
1
Publication Order Number:
LP2950/D
LP2950, LP2951, NCV2951
100 mA, Low Power Low
Dropout Voltage Regulator
The LP2950 and LP2951 are micropower voltage regulators that are
specifically designed to maintain proper regulation with an extremely
low input−to−output voltage differential. These devices feature a very
low quiescent bias current of 75
mA and are capable of supplying
output currents in excess of 100 mA. Internal current and thermal
limiting protection is provided.
The LP2951 has three additional features. The first is the Error
Output that can be used to signal external circuitry of an out of
regulation condition, or as a microprocessor power−on reset. The
second feature allows the output voltage to be preset to 5.0 V, 3.3 V or
3.0 V output (depending on the version) or programmed from 1.25 V
to 29 V. It consists of a pinned out resistor divider along with direct
access to the Error Amplifier feedback input. The third feature is a
Shutdown input that allows a logic level signal to turn−off or turn−on
the regulator output.
Due to the low input−to−output voltage differential and bias current
specifications, these devices are ideally suited for battery powered
computer, consumer, and industrial equipment where an extension of
useful battery life is desirable. The LP2950 is available in the three
pin case 29 and DPAK packages, and the LP2951 is available in the
eight pin dual−in−line, SOIC−8 and Micro8 surface mount packages.
The ‘A’ suffix devices feature an initial output voltage tolerance
 0.5%.
Features
Low Quiescent Bias Current of 75 mA
Low Input−to−Output Voltage Differential of 50 mV at 100 mA and
380 mV at 100 mA
5.0 V, 3.3 V or 3.0 V 0.5% Allows Use as a Regulator or Reference
Extremely Tight Line and Load Regulation
Requires Only a 1.0 mF Output Capacitor for Stability
Internal Current and Thermal Limiting
NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
These Devices are Pb−Free and RoHS Compliant
LP2951 Additional Features
Error Output Signals an Out of Regulation Condition
Output Programmable from 1.25 V to 29 V
Logic Level Shutdown Input
(See Following Page for Device Information.)
TO−92
Z SUFFIX
CASE 29
See detailed ordering and shipping information in the package
dimensions section on pages 14 and 15 of this data sheet.
See general marking information in the device marking
section on page 17 of this data sheet.
ORDERING & MARKING INFORMATION
PIN CONNECTIONS
Pin: 1. Output
2. Ground
3. Input
DPAK
DT SUFFIX
CASE 369C
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
12
3
(Top View)
Pin: 1. Input
2. Ground
3. Output
8
1
8
1
8
1
PIN CONNECTIONS
18
7
6
5
2
3
4
(Top View)
Output
Sense
Shutdown
Input
Feedback
Error Output
VO Tap
GND
SOIC−8
D SUFFIX
CASE 751
PDIP−8
N SUFFIX
CASE 626
Micro8E
DM SUFFIX
CASE 846A
http://onsemi.com
1 2
3
4
1 2
3
1
2
BENT LEAD
TAPE & REEL
AMMO PACK
STRAIGHT LEAD
BULK PACK
3


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