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STR-A6059H, STR-A6069, STR-A6131

Table of contents:
Info of STR-A6059H
Info of STR-A6069
Info of STR-A6131

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STR-A6131 General Description

The Series STR-A6100 are PRC topology ICs (fixed off-time and variable on-time control) designed for a relatively low output power SMPS design of which output power is up to 20 W at universal input or 24 W at 230 VAC input. The auto-standby function reduces input power consumption to less than 50 mW at 230 VAC input by the burst-mode operation, which is stabilized by the auto-bias function to avoid a hiccup phenomenon. Current-mode feedback and leading-edge blanking stabilize the entire power supply operation. Various protections such as overvoltage, overcurrent, overload, thermal shutdown, and an avalanche-guaranteed MOSFET secure good system-level reliability.

These devices are provided in an 8-pin mini-DIP plastic package.

STR-A6131 Maximum Ratings

Control Supply Voltage, VCC . . . . . . . . . . .. . 35 V
Drain-Source Voltage, VDSS . . . . . . . . . . . . 500 V
Drain Switching Current, ID
STR-A6131 . . . . . . . . . . . . . . . . .. . . . . . . . 3.2 A*
STR-A6132 . . . . . . . . . . . . . . . .. . . . . . . . . 4.0 A*
Peak Drain Switching Current, IDM
STR-A6131 . . . . . . . . . . . . . . . . .. . . . . . . . 3.2 A
STR-A6132 . . . . . . . . . . . . . . . . . . . .. . . . . 4.0 A
Single-Pulse Avalanche Energy, EAS
STR-A6131 . . . . . . . . . . . . . .. . . . . . . . . . . 32 mJ
STR-A6132 . . . . . . . . . . . . . . . .. . . . . . .. . . 78 mJ
Start-Up-Pin Voltage Range,
Vstartup . . . . . . . . . . .. . . . .. . 0.3 V to +600 V
OCP Voltage Range,
VOCP . . . . . . . . . . . . .. . . . . . . . 0.5 V to +6 V
FB/OLP Voltage Range,
VFB/OLP . . . . . . . . . . . . . . . . . 0.5 V to +10 V
Package Power Dissipation, PD
control (VCC * ICC(ON)) . . . . . . . . . . . . . 0.15 W
MOSFET (VDSS * ID) . . . . . . . .. . . . . . .. . 1.35 W
total . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . 1.5 W
MOSFET Channel Temp., TJ . . . .. . . . . . .+150°C
Internal Frame Temp., TF . . . . . . . . . .. . +125°C
Operating Temperature Range,
TA . . . . . . . . . . . . . .. . . . . . . -20°C to +125°C†
Storage Temperature Range,
TS . . . . . . . . . . . . . .. . . . . . . .. -40°C to +125°C
* Drain switching current is limited by temperature
(page 2) and safe operating area
(page 4).
†For the availability of parts meeting -40°C
requirements, contact Allegro's Sales Representative.

STR-A6131 Features

Rugged 500 V Avalanche-Rated MOSFET Simplified Surge Absorption No VDSS Derating Required
Choice of rDS(on) (2.62 Ω or 3.95 Ω maximum)
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

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