Diodes AP3408 - Manual (Page 3)

Preliminary Datasheet
2A, 4MHz High Efficiency Synchronous Buck Converter AP3408
Jan. 2013 Rev. 1. 1 BCD Semiconductor Manufacturing Limited
3
Functional Block Diagram
SD
Oscillator
SUM
CS
0.8V
EA
OCP
Dr
iver
Control
Logic
OTP UVLO
V
REF
0.9V
SHDN/RT
PVDD
SW
GND
PGND
PGOOD
FB
COMP
1(1)
3(2)
10(8)
4(3)
5(4)
6(5)
8
9(7)
PWM
Clamp
SS
DC
SYNC
2
0.7V
0.4V
VDD
7(6)
A (B)
A for DFN-3X3-10
B for PSOP-8
Figure 3. Functional Block Diagram of AP3408