FAN7602_0611 Datasheet, PDF (1/18 Pages) Fairchild Semiconductor – Green Current Mode PWM Controller

FAN7602
Green Current Mode PWM Controller
November 2006
Features
„ Green Current Mode PWM Control
„ Fixed 65kHz Operation with Frequency Modulation
„ Internal High-Voltage Start-up Switch
„ Burst Mode Operation
„ Line Voltage Feed Forward to Limit Maximum Power
„ Line Under-Voltage Protection
„ Latch Protection & Internal Soft-Start (10ms) Function
„ Overload Protection
„ Over-Voltage Protection
„ Low Operation Current: Typical 1mA
„ 8-pin DIP/SOP
Applications
„ Adapter
„ LCD Monitor Power
„ Auxiliary Power Supply
Related Application Notes
„ AN6014 - Green Current Mode PWM Controller
FAN7602
Description
The FAN7602 is a green current mode PWM controller. It
is specially designed for off-line adapter application,
DVDP, VCR, LCD monitor application, and auxiliary
power supplies.
The internal high-voltage start-up switch and the burst-
mode operation reduce the power loss in standby mode.
Because of the internal start-up switch and the burst
mode, it is possible to supply 0.5W load, limiting the
input power to under 1W when the input line voltage is
265V_AC. On no-load condition, the input power is under
0.3W.
The maximum power can be limited constantly, regard-
less of the line voltage change, using the power limit
function.
The switching frequency is internally fixed at 65kHz and
the frequency modulation technique reduces EMI.
The FAN7602 includes various protections for the sys-
tem reliability and the internal soft-start prevents the out-
put voltage overshoot at start-up.
Ordering Information
Part Number
FAN7602N
FAN7602M
FAN7602MX
Operating Temp.
Range
Pb-Free
-25°C to +125°C
Yes
Package
8-DIP
8-SOP
Packing Method
Rail
Rail
Tape & Reel
Marking
Code
FAN7602
FAN7602
FAN7602
© 2006 Fairchild Semiconductor Corporation
FAN7602 Rev. 1.0.2
www.fairchildsemi.com