FAN7601B_11 Datasheet, PDF (1/10 Pages) Fairchild Semiconductor – Green Current Mode PWM Controller

February 2011
FAN7601B
Green Current Mode PWM Controller
Features
 Green Current Mode PWM Control
 Low Operating Current: Maximum 4mA
 Burst Mode Operation
 Internal High-Voltage Startup Switch
 Under-Voltage Lockout (UVLO): 12V/8V
 Latch Protection and Soft-Start Function
 Over-Voltage Protection: 19V
 Operating Frequency up to 300kHz
 Maximum Duty Cycle: 95%
Applications
 Offline Adapter Applications
 Auxiliary Power Supplies
Related Resources
 AN4129 — Green Current Mode PWM
Controller FAN7601
Description
The FAN7601B is a programmable frequency green
current mode PWM controller. It is specially designed for
the offline adapter applications and the auxiliary power
supplies that require high efficiency at light load and no
load. The internal high-voltage startup switch and burst
mode reduce the power loss.
FAN7601B includes protections, such as latch protection
and over-voltage protection. The latch protection can be
used for over-voltage protection, thermal protection, and
others. The soft-start prevents the output voltage
overshoot at startup.
Ordering Information
Part Number
FAN7601BM
FAN7601BMX
FAN7601BGX
Operating
Junction
Temperature
-40C to +85C
Top Mark
7601B
7601B
7601B
Package
8-SOP
8-SOP
10-SSOP
Packing Method
Rail
Tape & Reel
Tape & Reel
© 2008 Fairchild Semiconductor Corporation
FAN7601B • Rev. 1.0.2
www.fairchildsemi.com