FAN6861 Fairchild Semiconductor, FAN6861 Datasheet - Page 2

• Manufacturer Part Number: FAN6861
• Description: A highly integrated PWM controller, FAN6861 provides several features to enhance the performance of flyback converters
• Manufacturer: Fairchild Semiconductor

© 2009 Fairchild Semiconductor Corporation
FAN6861 • Rev. 1.0.1
Typical Application
Block Diagram
VDD
RT
5
3
I
RT
17.5V/9.5V
4V
25V
UVLO
1V
0.7V
Latch-Off release
Internal
BIAS
OVP
Debounce
Debounce
OCP
OVP
OTP
OLP
OTP1
OTP2
OCP
Figure 1. Typical Application
Protection
Latch-off
Recovery
Protection
Auto
Figure 2. Block Diagram
Delay
OCP
Controller
Green
Mode
OSC
FB
OTP
2
0.5V
R
SENSE
S
Q
GND
OLP
1
(Include Soft-Start)
Delay
OLP
Vlimit ramp
R
Compensation
Slope
Driver
Soft
3R
Blanking
Circuit
5.2V
VDD
4.6V
6
2
4
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SENSE
FB
GATE