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4.43 STR-F6668B (IC101) : Switching regulator
• Pin layout
1
• Block diagram
Vin
4
START
REG.
T.S.D.
5
O.V.P
LATCH
O.S.C
Vth(2)
-
+
Comp.2
GND
• Pin function
Pin No
Symbol
1
O.C.P/F.B Over current/Feedback terminal
2
S
3
D
4
VIN
5
GND
-
O.V.P
-
T.S.D
DRIVE
Vth(1)
-
+
Comp.1
Iconst
R3
5
Function
Source terminal
Drain terminal
Power supply terminal
Ground terminal
Overvoltage protection circuit
Thermal shutdown circuit
R1
3
D
R2
2
S
1 O.C.P/F.B
(No.22009)1-63
TH-A75
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