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LP2951ACS-L-3.3

Description
Fixed/Adjustable Positive LDO Regulator, 1.24V Min, 29V Max, 0.45V Dropout, BIPolar, PDSO8, SOIC-8
CategoryPower/power management    The power supply circuit   
File Size381KB,13 Pages
ManufacturerSIPEX
Websitehttp://www.sipex.com/
Environmental Compliance
Download Datasheet Parametric View All

LP2951ACS-L-3.3 Overview

Fixed/Adjustable Positive LDO Regulator, 1.24V Min, 29V Max, 0.45V Dropout, BIPolar, PDSO8, SOIC-8

LP2951ACS-L-3.3 Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerSIPEX
package instructionSOIC-8
Reach Compliance Codecompliant
Maximum drop-back voltage 10.45 V
JESD-30 codeR-PDSO-G8
JESD-609 codee3
length4.9 mm
Humidity sensitivity level1
Number of functions1
Number of terminals8
Working temperatureTJ-Max125 °C
Working temperature TJ-Min-40 °C
Maximum output current 10.1 A
Maximum output voltage 129 V
Minimum output voltage 11.24 V
Nominal output voltage 13.3 V
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Regulator typeFIXED/ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR
Maximum seat height1.75 mm
surface mountYES
technologyBIPOLAR
Terminal surfaceTIN
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature40
width3.9 mm
LP2950/LP2951
100mA Low Dropout Voltage Regulators
5.0V and 3.3V Versions at 100mA Output
Very Low Quiescent Current
Low Dropout Voltage: 380mV at 100mA
Extremely Tight Load and Line Regulation
Very Low Temperature Coefficient
Current & Thermal Limiting
Need Only 1
µF
for Stability
Offered in TO-92 (LP2950) & SOIC (LP2951)
Direct Replacement For LP2950/LP2951
FEATURES
Battery Powered Systems
Cordless Telephones
Radio Control Systems
Portable/Palm Top/Notebook Computers
Portable Consumer Equipment
Portable Instrumentation
Avionics
SMPS Post-Regulator
Voltage Reference
Automotive Electronics
APPLICATIONS
LP2951 versions only
Error Flag Warns of Output Dropout
Logic-Controlled Electronic Shutdown
Output Programmable From 1.24 to 29V
PRODUCT DESCRIPTION
The LP2950 and LP2951 are low power voltage regulators. These devices are an excellent choice for use in battery-powered
applications such as cordless telephones, radio control systems, and portable computers. The LP2950 and LP2951 feature low
quiescent current and low dropout voltage (typ. 50mV at light load and 380 mV at 100mA). This includes a tight initial tolerance
(0.5% typ.), extremely good load and line regulation (0.05% typ.), and very low output temperature coefficient (20 ppm/¡C typ.),
making the LP2950/LP2951 useful as a low-power voltage reference.
The error flag output feature is used as a power-on reset for warning of a low output voltage, due to a falling input voltage. The logic-
compatible shutdown feature enables the regulator to be switched ON and OFF. The LP2950 is offered in a 3-pin TO-92 package
compatible with other 5V, 3.3V regulators. The LP2951 is available in an 8-lead SOIC package.
Block diagram of LP2951
UNREGULATED DC
+
7
FEEDBACK
8
INPUT
1
OUTPUT
5V @ 100mA
MAX
2
SENSE
+
_
FROM
CMOS OR
TTL
180kΩ
6
ERROR
AMPLIFIER
5V TAP
3
SHUTDOWN
60 mV
330kΩ
+
60kΩ
+
5
______
ERROR
+
_
ERROR DETECTION
COMPARATOR
1µF
.
.
TO CMOS OR
TTL
+
1.23V
4
REFERENCE
GROUND
Rev. 8/6/01
LP2950/51 100mA Low Dropout Voltage Regulators
1
©Copyright 2001 Sipex Corporation
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