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FSD210B, FSD200B
Features
Single Chip 700V Sense FET Power Switch for 7DIP Precision Fixed Operating Frequency (134KHz) FSD210B Consumes Under 0.1W at 265VAC No Load with Advanced Burst-Mode Operation Internal Start-up Circuit Pulse-by-Pulse Current Limiting Over Load Protection (OLP) Internal Thermal Shutdown Function (TSD) Auto-Restart Mode Under Voltage Lockout (UVLO) with Hysteresis Built-in Soft Start Frequency Modultation for EMI Reduction FSD200B Does Not Require an Auxiliary Bias Winding

Green Mode Fairchild Power Switch (FPSTM)
OUTPUT POWER TABLE
PRODUCT FSD210B FSD200B FSD210BM FSD200BM 85-265VAC 230VAC 15%(3) Open Open Adapter(1) Adapter(1) Frame(2) Frame(2) 5W 7W 4W 5W 5W 7W 4W 5W 5W 7W 4W 5W 5W 7W 4W 5W

Applications
Charger Adapter for Mobile Phone, PDA MP3 Auxiliary Power for White Goods, PC, C-TV Monitor

Notes: 1. Typical continuous power in a non-ventilated enclosed adapter with sufficient drain pattern as a heat sinker, at 50 C ambient. 2. Maximum practical continuous power in an open frame design with sufficient drain pattern as a heat sinker, at 50 C ambient. 3. 230 VAC or 100/115 VAC with doubler.

Typical Circuit
AC IN

Related Application Notes
AN-4137, 4141, 4147(Flyback) / AN-4134(Forward) / AN-4138(Charger)

DC OUT

Vstr

Drain

Description
Each product in the FSD2x0B (x for 0, 1) family consists of an integrated Pulse Width Modulator (PWM) and Sense FET, and is specifically designed for high performance offline Switch Mode Power Supplies (SMPS) with minimal external components. Both devices are integrated high voltage power switching regulators which combine an avalanche rugged Sense FET with a voltage mode PWM control block. The integrated PWM controller features include: a fixed oscillator with frequency modulation for reduced EMI, Under Voltage Lock Out (UVLO) protection, Leading Edge Blanking (LEB), an optimized gate turn-on/turn-off driver, Thermal Shut Down (TSD) protection and temperature compensated precision current sources for loop compensation and fault protection circuitry. When compared to a discrete MOSFET and controller or RCC switching converter solution, the FSD2x0B devices reduce total component count, design size, weight while increasing efficiency, productivity, and system reliability. Both devices provide a basic platform
that is well suited for the design of cost-effective flyback converters.
FPSTM is a trademark of Fairchild Semiconductor Corporation. 2005 Fairchild Semiconductor Corporation

PWM Vfb Vcc Source

Figure 1. Typical Flyback Application for FSD210B

AC IN

DC OUT

Vstr PWM Vfb

Drain

Vcc

Source

Figure 2. Typical Flyback Application for FSD200B

Rev.1.0.3

FSD200B Datasheet Fairchild Download PDF

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FSD200B DATASHEET