Offline Regulators | FSD146MRBN

650V Integrated Power Switch with Abnormal OCP for 26Watt offline flyback converters

Obsolete

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Overview

The FSD146MRBN is an integrated Pulse Width Modulation (PWM) controller and SenseFET designed for offline Switch-Mode Power Supplies (SMPS) with minimal external components. The PWM controller includes an integrated fixed-frequency oscillator, Under-Voltage Lockout (UVLO), Leading-Edge Blanking (LEB), optimized gate driver, internal soft-start, temperature-compensated precise current sources for loop compensation, and self-protection circuitry. Compared with a discrete MOSFET and PWM controller solution, the FSD146MRBN can reduce total cost, component count, size, and weight; while simultaneously increasing efficiency, productivity, and system reliability. This device provides a basic platform that is well suited for cost-effective design of a flyback converter.

  • LCD TV
  • LED TV
  • LCD Monitor
  • DVD/Set Top Boxes

  • Advanced Soft Burst-Mode Operation for Low Standby Power and Low Audible Noise
  • Random Frequency Fluctuation (RFF) for Low EMI
  • Pulse-by-Pulse Current Limit
  • Various Protection Functions: Overload Protection (OLP), Over-Voltage Protection (OVP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD) with Hysteresis, Output-Short Protection (OSP), and Under-Voltage Lockout (UVLO) with Hysteresis
  • Low Operating Current (0.4mA) in Burst Mode
  • Internal Startup Circuit
  • Internal High-Voltage SenseFET: 650V
  • Built-in Soft-Start: 15ms
  • Auto-Restart Mode

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FSD146MRBN

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Obsolete

CAD Model

Pb

A

H

P

PDIP-8

646CN

NA

0

TUBE

3000

N

Current Mode

67

-

-

2.1

650

1500

Yes

-

Yes

Yes

-

-

No

Price N/A

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