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Offline Regulators | FSDM1265RB

650V Integrated Power Switch for 90Watt offline flyback converters

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Overview

The FSDM1265RB is an integrated Pulse-Width Modulator (PWM) and a SenseFET which is specifically designed for high performance offline SMPS with minimal external components. This device is an integrated high-voltage power switching regulator which combines a rugged avalanche SenseFET with a current mode PWM control block. The PWM controller includes integrated fixed frequency oscillator, under-voltage lockout, leading edge blanking (LEB), optimized gate driver, internal soft-start, and precise current sources that are temperature compensated for loop compensation and self protection circuitry. Compared with discrete MOSFET and PWM controller solution, it can reduce total cost, component count, size, and weight, while simultaneously increasing efficiency, productivity, and system reliability. This device is a basic platform which is well suited for cost effective designs of flyback converters.

  • Internal Avalanche Rugged SenseFET
  • Advanced Burst-Mode operation that consumes less than 1W at 240VAC and 0.5W load
  • Precision Fixed Operating Frequency (66kHz)
  • Internal Start-up Circuit
  • Improved Pulse by Pulse Current Limiting
  • Over-Voltage Protection (OVP)
  • Over-Load Protection (OLP)
  • Internal Thermal Shutdown Function (TSD)
  • Auto-Restart Mode
  • Under Voltage Lock Out (UVLO) with Hysteresis
  • Low Operating Current (2.5mA)
  • Built-in Soft Start

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FSDM1265RBWDTU

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Pb

A

H

P

TO-220-6

340BG

NA

0

TUBE

400

N

-

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-

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0.75

650

7000

Yes

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Yes

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