Application Diagram
Figure 1. Typical Application Circuit for Flyback Converter
Internal Block Diagram
HV
8
I HV
V DD
6
INTERNAL
4.2V
TIMER
52ms
FB OLP
27V
OVP
Latched
TWO STEPS
UVLO
16V/10V/8V
BIAS
FB
2
SOFT-START
5ms
V REF
2.1ms
30μs
2R
STARTER
V DD
1R
S
CS 3
LEB
PWM
Current Limit
R
Q
18V
5 GATE
OVER-POWER
COMPENSATION
I DET
DET OVP
t OFF_MIN
t OFF_MIN
BLANKING
0.3V
V DET
S/H
V DET
2.5V
VALLEY
DETECTOR
t OFF_OUT
Latched
7 NC
DET 1
5V
I DET
0.3V
INTERNAL
OTP
Latched
4 GND
Figure 2. Functional Block Diagram
Marking Information
: Fairchild Logo
Z: Plant Code
X: Year Code
Y: Week Code
TT: Die Run Code
T : Package Type (M = SOP)
P: Y = Green Package
M : Manufacture Flow Code
Figure 3. Marking Diagram
? 2010 Fairchild Semiconductor Corporation
FL6300A ? Rev. 1.0.2
2
www.fairchildsemi.com
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