參數(shù)資料
型號: FSDM311L
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 穩(wěn)壓器
英文描述: Green Mode Fairchild Power Switch (FPS)
中文描述: 1.5 A SWITCHING REGULATOR, 73 kHz SWITCHING FREQ-MAX, PDSO8
封裝: LSOP-8
文件頁數(shù): 1/16頁
文件大?。?/td> 377K
代理商: FSDM311L
2004 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev.1.0.5
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
Applications
Charger & Adaptor for Mobile Phone, PDA & MP3
Auxiliary Power for White Goods, PC, C-TV & Monitor
Description
The FSDM311 is an integrated Pulse Width Modulator
(PWM) and Sense FET specially designed for high perfor-
mance off-line Switch Mode Power Supplies (SMPS) with
minimal external components. This device 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), temper-
ature compensated precision current sources for loop com-
pensation and fault protection circuitry. When compared to a
discrete MOSFET and controller or RCC switching con-
verter 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.
Table 1. Notes: 1. 230 VAC or 100/115 VAC with doubler.
Typical Circuit
Figure 1. Typical Flyback Application using FSDM311
TYPICAL POWER CAPABILITY
PRODUCT
Open Frame
230VAC
±
15%
(1)
20W
85-265VAC
FSDM311
12W
FSDM311L
20W
12W
Drain
Source
Vstr
Vfb
Vcc
PWM
AC
IN
DC
OUT
FS DM311
Green Mode Fairchild Power S w itch (FPS
T M
)
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