FSDH565B Fairchild Semiconductor, FSDH565B Datasheet

FSDH565B

Manufacturer Part Number
FSDH565B
Description
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of FSDH565B

Power Switch Family
FSDH565
Input Voltage
-0.3 to 5V
Power Switch On Resistance
36Ohm
Output Current
300mA
Mounting
Through Hole
Supply Current
3.5mA
Package Type
PDIP-H
Operating Temperature (min)
-25C
Operating Temperature (max)
85C
Operating Temperature Classification
Commercial
Pin Count
8
Lead Free Status / Rohs Status
Compliant
Features
• Single Chip 650V 0.5A SenseFET Power Switch
• Precision Fixed Operating Frequency (100kHz)
• Internal Start up Switch
• UVLO with Hysteresis (6.7V/8.7V)
• Over Load Protection
• Over Current Protection (0.3A)
• Internal Thermal Shutdown Function
• Secondary Side Regulation
• Auto-restart mode
• No load consumption <250mW at 265VAC input
Applications
• Charger & Adaptor for Mobile Phone, PDA & MP3
• Auxiliary Power for PC, C-TV, Monitor
Internal Block Diagram
©2001 Fairchild Semiconductor Corporation
FSDH565
Fairchild Power Switch(FPS)
#7 : Vcc
#7 : Vcc
#2 : Vfb
#2 : Vfb
5 uA
5 uA
4.5V
4.5V
VREG(5.8V)
VREG(5.8V)
UVLO
UVLO
+
+
+
_
_
_
OLP
OLP
0.45 mA
0.45 mA
5.8V
5.8V
TSD
TSD
+
+
+
_
_
_
PWM
PWM
VREF
VREF
4.5V
4.5V
OSC
OSC
÷4
÷4
Description
The FSDH565 is specially designed for an off-line SMPS with
minimal external components. The FSDH565 is a monolithic
high voltage power switching regulator that combine the
SenseFET(LDMOS) with voltage mode PWM control block.
Included PWM controller features integrated fixed oscillator,
under voltage lock out, leading edge blanking, optimized gate
turn-on/turn-off driver, thermal shut down protection and
temperature compensated precision current sources for loop
compensation and fault protection circuitry. compared to
discrete MOSFET and controller or R
solution, a FSDH565 can reduce total component count, design
size, weight and at the same time increase efficiency,
productivity, and system reliability. It has a basic platform well
suited for cost effective design in a flyback converter.
S
S
R
R
1.Vstr 2.Vfb 3.4.5.6.GND 7.Vcc 8.Drain
UVLO ≥ 8.7V
UVLO ≥ 8.7V
S
S
R
R
UVLO ≤ 6.7V
UVLO ≤ 6.7V
Q
Q
Q
Q
INTERNAL
INTERNAL
BIAS
BIAS
8-DIPH
OCP
OCP
#1 : Vstr
#1 : Vstr
L.E.B
L.E.B
1
+
+
+
_
_
_
Vth
Vth
SFET
SFET
www.fairchildsemi.com
CC
#8 : Drain
#8 : Drain
#3,#4,#5,#6
#3,#4,#5,#6
GND
GND
switching converter
Rev.1.0.2

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FSDH565B Summary of contents

Page 1

... Fairchild Semiconductor Corporation Description The FSDH565 is specially designed for an off-line SMPS with minimal external components. The FSDH565 is a monolithic high voltage power switching regulator that combine the SenseFET(LDMOS) with voltage mode PWM control block. Included PWM controller features integrated fixed oscillator, ...

Page 2

... This is the positive supply voltage input. During start up, power is supplied to this input from Pin 1. When Vcc reaches the UVLO upper threshold (8.7V), the start up Internal Switch (Vstr) turns off and power is supplied from auxiliary transformer winding. This pin is designed to directly drive the converter transformer and is capable of switching a maximum of 650V and 1A ...

Page 3

Electrical Characteristics (Ta=25 C unless otherwise specified) Parameter SENSEFET SECTION Drain-Source Breakdown Voltage Zero gate voltage drain current Static drain-source on Resistance Rise Time Fall Time START UP SECTION VSTR Supply Voltage UVLO SECTION Start Threshold Voltage Stop Threshold Voltage ...

Page 4

FSDH565 Typical Performance Characteristics (These characteristic graphs are normalized at Ta=25 C) BVdss BVdss[V] 800 790 780 770 760 750 740 730 720 710 700 - Figure 1. Breakdown vs.Temperature Vstart Vstart[V] 8.8 8.7 8.6 8.5 8.4 ...

Page 5

Typical Performance Characteristics (These characteristic graphs are normalized at Ta=25 C) OSC Frequency[Khz] 110 105 100 Figure 7. Output Frequency IPeak IPeak(A) 0.31 0.3 0.29 0.28 0.27 0.26 0.25 - Figure ...

Page 6

FSDH565 Typical Circuit V DC Vstart Start- Drain PWM 3,4,5&6 BCDMOS 1Chip 7 GND Vfb Vcc Feedback Circuit ...

Page 7

Package Dimensions 8-DIPH FSDH565 7 ...

Page 8

... FSDH565 8-DIPH DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. ...

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