LP2951ACD33R2G ON Semiconductor, LP2951ACD33R2G Datasheet
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LP2951ACD33R2G
Manufacturer Part Number
LP2951ACD33R2G
Description
SOP-8
Manufacturer
ON Semiconductor
Datasheet
1.LP2950CDT50RKG.pdf
(23 pages)
Specifications of LP2951ACD33R2G
Date_code
09+
LP2950, LP2951, NCV2951
100 mA, Low Power Low
Dropout Voltage Regulator
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.
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.
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
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LP2951 Additional Features
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© Semiconductor Components Industries, LLC, 2008
May, 2008 − Rev. 21
The LP2950 and LP2951 are micropower voltage regulators that are
The LP2951 has three additional features. The first is the Error
Due to the low input−to−output voltage differential and bias current
380 mV at 100 mA
and Control Changes
Low Quiescent Bias Current of 75 mA
Low Input−to−Output Voltage Differential of 50 mV at 100 mA and
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
Pb−Free Packages are Available
NCV Prefix for Automotive and Other Applications Requiring Site
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.)
1
See detailed ordering and shipping information in the package
dimensions section on pages 14 and 16 of this data sheet.
See general marking information in the device marking
section on page 18 of this data sheet.
STRAIGHT LEAD
ORDERING & MARKING INFORMATION
1 2
1 2
CASE 369C
DT SUFFIX
BULK PACK
case outline drawing) is connected to Pin 2.
Heatsink surface (shown as terminal 4 in
Shutdown
DPAK
3
3
Output
Sense
DM SUFFIX
CASE 846A
GND
CASE 751
CASE 626
D SUFFIX
N SUFFIX
Micro8E
SOIC−8
PDIP−8
4
PIN CONNECTIONS
http://onsemi.com
1
2
3
4
(Top View)
1
TAPE & REEL
AMMO PACK
(Top View)
BENT LEAD
1
2
PIN CONNECTIONS
Publication Order Number:
3
2
8
8
8
7
6
5
3
8
Input
Feedback
V
Error Output
Pin: 1. Output
Pin: 1. Input
1
1
O
1
Tap
Z SUFFIX
CASE 29
TO−92
2. Ground
3. Input
2. Ground
3. Output
LP2950/D