Products » KA431S Adjustable/2.5V, 2% Tolerance Shunt Regulator

KA431S − Adjustable/2.5V, 2% Tolerance Shunt Regulator

The KA431S, KA431SA, and KA431SL are three-terminal adjustable regulator series with a guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between V_REF (approximately 2.5 V) and 36 V with two external resistors These devices have a typical dynamic output impedance of 0.2 Ω. Active output circuitry provides a very sharp turn on characteristic, making these devices excellent replacement for Zener diodes in many applications.

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Product Status/Pricing/Packaging

Index	Product	Product & Eco Status	*Pricing	Packaging & Packing Info	**Package Marking Convention	Qualification Support	Compliance Certificates
0	KA431SMFTF	Full Production ROHS Compliant	$0.0417	SOT-23F 3L Details SOT-23F 3L Drawing TAPE REEL	Line 1:43A	Moisture Sensitivity Level (MSL) : 1 Max Reflow Temp : 260	RoHS IPC1752 RoHS/REACH/JIG RoHS/REACH/JIG
0	KA431SMF2TF	Full Production ROHS Compliant	$0.0417	SOT-23F 3L Details SOT-23F 3L Drawing TAPE REEL	Line 1:43D	Moisture Sensitivity Level (MSL) : 1 Max Reflow Temp : 260	RoHS IPC1752 RoHS/REACH/JIG RoHS/REACH/JIG

Fairchild 1,000 piece Budgetary Pricing. *
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Top mark packaging information for product KA431S is available. **

Features

Programmable Output Voltage to 36 V
Low Dynamic Output Impedance 0.2 Ω Typical
Sink Current Capability of 1.0 to 100 mA
Equivalent Full-Range Temperature Coefficient of 50 ppm/°C Typical
Temperature Compensated for Operation Over Full Rated Operating Temperature Range
Low Output Noise Voltage
Fast Turn-on Response

Applications

Server & Mainframe

Workstation

Desktop PC

Notebook PC

PC Server

Media Tablets

Storage & Peripherals

Printer

Graphic Card

LCD Monitor

CRT/RPTV

Other Data Processing

Routers & LAN Switches

SAN

Long-haul & Metro

Broadband Access

Broadband Modem

Enterprise Voice Network

Central Office

Broadcast & Studio

Other Wired Communications

Mobile Handsets

Wireless LAN Card & Broadband Access

Wireless LAN Access Point/Router

Mobile Comm Infrastructure

External AC-DC Merchant Power Supply - Wireless Communications

Other Wireless Communications

PMP/MP3 Players

Home Audio System Components

CRT/RPTV

LCD TV

PDP TV

Camcorder

DVD

Set Top Boxes

DSC

Video Game Console

E-book Reader

Consumer Appliances

AC-DC Merchant Power Supply - Video game console, flat Panel TV, DVR, STB

Other Audio & Video

Other Consumer Electronics

Medical Electronics/Devices

Automation

Test and Measurement

Building & Home Control

Other Industrial

Military & Civil Aerospace

Application Notes

Application Note	Description
AN-9015	A180W, 100KHz Forward Converter Using QFET®(67 K) 05-Mar-2011
AN-4149	Design Guidelines for Quasi-Resonant Converters Using KA5Q-series Fairchild Power Switch (FPS™)(315 K) 05-Mar-2011
AN-6073	FAN6751 Highly Integrated Green-Mode PWM Controller(505 K) 05-Mar-2011
AN-6075	Compact Green-Mode Adapter Using FSQ500L for Low Cost(701 K) 05-Mar-2011
AN-8025SC	Design Guideline of Single-Stage Flyback AC-DC Converter Using FAN7530 for LED Lighting (Chinese Translation)(720 K) 03-Mar-2011
AN-8025	Design Guideline of Single-Stage Flyback AC-DC Converter Using FAN7530 for LED Lighting(673 K) 10-Apr-2013
AN-9017	Manufacturing Technology of a Small Capacity Inverter Using a Fairchild IGBT(448 K) 05-Mar-2011
AN-8026	FAN9611 / FAN9612 400W 1-Layer Evaluation Board User Guide (FEB301)(2,646 K) 26-Jan-2012
AN-4137SC	Design Guidelines for Offline Flyback Converters Using FPS™ (Chinese Translation)(879 K) 05-Mar-2011
AN-6920MR	Integrated Critical-Mode PFC / Quasi-Resonant Current-Mode PWM Controller FAN6920MR(795 K) 02-Apr-2013
AN-8027	FAN480X PFC+PWM Combination Controller Application(629 K) 03-Mar-2011
AN-9738	Design Guideline on 150W Power Supply for LED Street Lighting Design Using FL7930B and FAN7621S(1,209 K) 20-Apr-2011
AN-4151	Half-Bridge LLC Resonant Converter Design Using FSFR-Series Fairchild Power Switch (FPS™)(1,113 K) 15-May-2012
AN-9745	Design Guide for TRIAC Dimmable LED Driver Using FL7730(1,484 K) 10-Apr-2013
AN-8024	Applying Fairchild Power Switch (FPS™) FSBH-series to Standby Auxiliary Power Supply(494 K) 03-Mar-2011
AN-4134SC	Design Guidelines for Offline Forward Converters using FPS™ (Chinese Translation)(914 K) 05-Mar-2011
AN-6861	Applying FAN6861 to Control a Flyback Power Supply with Surge Current Output(474 K) 03-Mar-2011

Additional Resources

Design Tools Knowledgebase – Ask a Question Find a local sales office Product change notices (PCN) How to Buy Products or Order Samples


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