CS5231-3GDF8 ONSEMI [ON Semiconductor], CS5231-3GDF8 Datasheet

CS5231-3GDF8

Manufacturer Part Number

CS5231-3GDF8

Description

500 mA, 3.3 V Linear Regulator with Auxiliary Control

Manufacturer

ONSEMI [ON Semiconductor]

Datasheets

1.CS5231-3.pdf (14 pages)

2.CS5231-3GDF8.pdf (14 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

CS5231-3GDF8

Manufacturer:

ON Semiconductor

Quantity:

Current page: 1 of 14
Download datasheet (382Kb)

CS5231−3

500 mA, 3.3 V Linear

Regulator with Auxiliary

Control

circuitry controlling an external PFET transistor thus managing two

input supplies. The part provides a 3.3 V regulated output either from

the main 5.0 V supply or a 3.3 V auxiliary that switches on when the

5.0 V supply is not present. This delivers constant, uninterrupted

power to the load. The CS5231−3 meets Intel’s “Instantly Available”

power requirements which follows from the “Advanced Configuration

and Power Interface” (ACPI) standards developed by Intel, Microsoft

and Toshiba.

500 mA with an overall accuracy of ± 2.0%. The internal NPN−PNP

composite pass transistor provides a low dropout voltage and requires

less supply current than a straight PNP design. Full protection with

both current limit and thermal shutdown is provided.

from flowing from V

input voltage is lower than the output voltage.

Network Interface Card (NIC). When the system enters a Sleep State

and the 5.0 V input drops below 4.4 V, the AuxDrv control signal on the

CS5231−3 is activated turning on the external PFET. This switches the

supply source from the 5.0 V input to the 3.3 V input through the PFET,

guaranteeing a constant 3.3 V output to the ASIC that is “glitch free.”

(TO263) package and the SOIC−8 4−Lead−fused (DF) package. Other

applications include desktop computers, power supplies with multiple

input sources and PCMCIA/PCI interface cards.

Features

•

September, 2006 − Rev. 6

The CS5231−3 combines a three−terminal linear regulator with

The CS5231−3 linear regulator provides a fixed 3.3 V output at

Designed for low reverse current, the IC prevents excessive current

The CS5231−3 can be used to provide power to an ASIC on a PCI

The CS5231−3 is available in two package types: the D

Linear Regulator

System Power Management

Internally Fused Leads in SOIC−8 Package

−

3.3 V ± 2.0% Output Voltage

3.0 mA Quiescent Current @ 500 mA

Fast Transient Response

Current Limit Protection

Thermal Shutdown with Hysteresis

450 mA Reverse Output Current

Auxiliary Supply Control

“Glitch Free” Transition Between Two Supplies

OUT

to either V

or ground when the regulator

PAK−5

CS5231−3GDF8

CS5231−3GDFR8

CS5231−3GDP5

CS5231−3GDPR5

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specifications

Brochure, BRD8011/D.

Device

ORDERING INFORMATION

PIN CONNECTIONS AND

CS5231−3

AWLYWW

WL, L

YY, Y

WW, W = Work Week

GND

MARKING DIAGRAMS

PAK−5

http://onsemi.com

= Assembly Location

= Wafer Lot

= Year

Package

SOIC−8

PAK−5

Publication Order Number:

DF SUFFIX

CASE 751

CASE 936AC

SOIC−8

DP SUFFIX

2500 Tape & Reel

750 Tape & Reel

1. No Connect

2. V

3. GND

4. V

5. AuxDrv

AuxDrv

GND

PAK−5

95 Units/Rail

50 Units/Rail

OUT

Shipping†

OUT

Tab = GND

CS5231−3/D

Related parts for CS5231-3GDF8

Related keywords

CS5231-3GDF8 datasheet
CS5231-3GDF8 data sheet
CS5231-3GDF8 pdf datasheet
CS5231-3GDF8 component
CS5231-3GDF8 part
CS5231-3GDF8 distributor
CS5231-3GDF8 RoHS
CS5231-3GDF8 datasheet download