Fairchild Fan7602B Green Current-Mode Controller Data Sheet
Summary
This FAN7602B Green Current-Mode PWM Controller is designed for off-line adapter and auxiliary power supply applications. It features a fixed 65kHz switching frequency, burst-mode operation for low standby power, and comprehensive protection functions like overvoltage, undervoltage, and overload protection to ensure system reliability.
Page 1 Text Content
FA 7602B reen C urrent-M ode PW ontroller
March 2007
FAN7602B Green Current-Mode PWM Controller Features Description Green Current-Mode PWM Control The FAN7602B is a green current-mode PWM controller.
Fixed 65k Hz Operation It is specially designed for off-line adapter applications; DVDP, VCR, LCD monitor applications; and auxiliary
Internal High-Voltage Start-up Switch
power supplies.
Burst-Mode Operation
The internal high-voltage start-up switch and the burst-
Line Voltage Feedforward to Limit Maximum Power
mode operation reduce the power loss in standby mode.
Line Under-Voltage Protection
As a result, it is possible to supply 0.5W load, limiting the
Latch Protection & Internal Soft-Start (10ms) Function
input power under 1W when the input line voltage is
Overload Protection 265VAC. On no-load condition, input power is under 0.3W. Over-Voltage Protection
The maximum power can be limited constantly, regard-
Low Operation Current: 1m A Typical
less of the line voltage change, using the power limit
8-pin DIP/SOP function.
The switching frequency is internally fixed at 65k Hz.
Applications
The FAN7602B includes various protections for the sys-
Adapter
tem reliability and the internal soft-start prevents the out-
LCD Monitor Power
put voltage over-shoot at start-up.
Auxiliary Power Supply
Related Application Notes AN6014 - Green Current Mode PWM Controller FAN7602
Ordering Information
Operating Temp. Marking
Part Number Range Pb-Free Package Packing Method Code FAN7602BN 8-DIP Rail FAN7602B FAN7602BM -25°C to +125°C Yes Rail FAN7602B
8-SOP
FAN7602BMX Tape & Reel FAN7602B
© 2 007 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN 7602B Rev. 1.0.0
Page Summary Contents For Fairchild Fan7602B Green Current-Mode Controller Data Sheet
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 17 |
| File Size | 1.20 MB |
| Published | June 16, 2026 |
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Frequently Asked Questions
What is the switching frequency of the FAN7602B?
The switching frequency is internally fixed at 65kHz.
What are the available package types?
It is available in 8-pin DIP or 8-pin SOP packages.
How is start-up handled to reduce power loss?
It uses an internal high-voltage start-up switch, which turns off after start-up to reduce loss.
What protections does the controller provide?
It includes line under-voltage, overload, over-voltage, and latch protection.
What is the typical operating current?
The low operation current is typically 1mA.