FSDM311

On Time (Max) :
Off Time (Max) :
Operating Supply Voltage :
Maximum Operating Temperature : + 85 C
Number of Outputs : 1
Mounting Style : Through Hole
Supply Current (Max) : 1.5 mA
Package / Case : PDIP-8
On Resistance (Max) : 14 Ohms


Features:

• Internal Avalanche Rugged Sense FET
• Precision Fixed Operating Frequency (67kHz)
• Advanced Burst-Mode operation Consumes under 0.2W at 265Vac and no load
• Internal Start-up Switch and Soft Start
• Under Voltage Lock Out (UVLO) with Hysteresis
• Pulse by Pulse Current Limit
• Over Load Protection (OLP)
• Over Voltage Protection (OVP)
• Internal Thermal Shutdown Function (TSD)
• Secondary Side Regulation
• Auto-Restart Mode


Application

• Charger & Adaptor for Mobile Phone, PDA & MP3
• Auxiliary Power for White Goods, PC, C-TV & Monitor


Pinout




Specifications

Parameter	Symbol	Value	Unit
Maximum Vstr Pin Voltage	VSTR,MAX	650	V
Maximum Drain Pin Voltage	VDRAIN,MAX	650	V
Drain-Gate Voltage (RGS=1MΩ)	VDGR	650	V
Gate-Source (GND) Voltage	IDM	±20	V
Drain Current Pulsed (1)	ID	1.5	ADC
Continuous Drain Current (Tc=25°C)	ID	0.32	ADC
Continuous Drain Current (Tc=100°C)	EAS	10	ADC
Single Pulsed Avalanche Energy (2)	VCC,MAX	20	mJ
Maximum Supply Voltage	VFB	−0.3 to Vstop	V
Total Power Dissipation	PD	1.25	V
Operating Junction Temperature.	TJ	+150	W
Operating Ambient Temperature.	TA	-25 to +85	°C
Storage Temperature Range.	TSTG	-55 to +150	°C

Description

The FSDM311 is an integrated Pulse Width Modulator (PWM) and Sense FET specially designed for high performance off-line Switch Mode Power Supplies (SMPS) with minimal external components. FSDM311 is a monolithic high voltage power switching regulator which combines an VDMOS Sense FET with a voltage mode PWM control block. The integrated PWM controller features include: a fixed oscillator, Under Voltage Lock Out (UVLO) protec- tion, Leading Edge Blanking (LEB), optimized gate turn-on/ turn-off driver, thermal shut down protection (TSD), 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 FSDM311 reduces total component count, design size, weight and at the same time increases efficiency, productivity, and system reliability. This device is a basic platform well suited for cost effective designs of fly- back converters. 

Parameters:

Technical/Catalog Information	FSDM311
Vendor	Fairchild Semiconductor
Category	Integrated Circuits (ICs)
Packaging	-
Package / Case	8-DIP
Power (Watts)	13W
Voltage - Input	8 ~ 20 V
Voltage - Output	650V
Frequency Range	61 ~ 73kHz
Operating Temperature	25°C ~ 85°C
Output Isolation	Isolated
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	FSDM311 FSDM311