Changhong Electric PF29T18 Service Manual page 41

(3) Black Diagram
Vcc
4 Pin
+
-
RTFC
7 Pin
(4) Pinning
Pin No. Symbol
1 D
2 NC
3 S/GND
4 Vcc
5 OCP/BD
6 FB/OLP
7 RTFC
(5) Refer to Table 18 about Functions and Data of the IC's Pins.
SERVICE MANUAL
LATCH
REG
R
S
OVP
TSD
Current
Mirror
+
-
OSC
OLP
Current
Mirror
FB/OLP
6 Pin
Name
Source for MOSFET
Source/GND for MOSFET
Supply voltage
Over-current
detection/Bottom detection
Feedback/Over-load
detection
Time Fix Control regulation
Drive REG
Q
REG
TFC
+
-
BD
BEC
Fig. 22
Table 11
protection
protection
39
DRV
+
OCP
-
BIC
Function Description
Source/ GND for Control
D
1 Pin
S/GND
3 Pin
OCP/BD
5 Pin