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A6169

Allegro
Part Number A6169
Manufacturer Allegro
Description STR-A6169
Published Mar 27, 2014
Detailed Description g n i h tors c t i a Sw egul R STR-A6169 Universal-Input/5 W Flyback Switching Regulator The STR-A6169 is a PRC topolo...
Datasheet PDF File A6169 PDF File

A6169
A6169


Overview
g n i h tors c t i a Sw egul R STR-A6169 Universal-Input/5 W Flyback Switching Regulator The STR-A6169 is a PRC topology (fixed off-time) regulator specifically designed to satisfy the requirements for increased integration and reliability in flyback converters.
It incorporates a primary control and drive circuit with avalanche-rated 800 V power MOSFET.
Covering the power range from below 8 watts for a 230 VAC input, or 5 watts for a universal (85 to 264 VAC) input, this device can be used in a range of applications, from DVD and VCR players to ac adapters for cellular phones and digital cameras.
An auto-standby function reduces power consumption at light load, while multiple protections, including the avalanche-energy guaranteed MOSFET, provide high reliability of system design.
Devices with an increased output power rating are the STR-A6151 and STR-A6159.
Cycle-by-cycle current limiting, undervoltage lockout with hysteresis, overvoltage protection, and thermal shutdown protect the power supply during the normal overload and fault conditions.
Overvoltage protection and thermal shutdown are latched after a short delay.
The latch may be reset by cycling the input supply.
Low start-up current and a low-power standby mode selected from the secondary circuit completes a comprehensive suite of features.
The STR-A6169 is provided in an 8pin mini-DIP plastic package.
FEATURES AND BENEFITS ■ Rugged 800 V Avalanche-Rated MOSFET Simplified Surge Absorption No VDSS Derating Required ■ 19.
2 Ω rDS(on) ■ Two Operational Modes by Automatic Switching: PRC Mode for Normal Operation Burst Mode for Stand-By Operation or Light Loads ■ Built-In Leading Edge Blanking ■ Low Start-Up Current Start-Up Circuit Disabled in Operation ■ Low Operating Current (1.
5 mA typ) ■ Automatic Burst Stand-By (intermittent operation) Input Power <0.
1 W at No Load — continued Always order by complete part number, e.
g.
, STR-A6169 .
Data Sheet 28102.
24 ABSOLUTE MAXIMUM RATINGS at TA = +25°C Control Supply...


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