Datasheet

Data Sheet ADP2302/ADP2303
Rev. A | Page 13 of 28
FUNCTIONAL BLOCK DIAGRAM
1
8
2
3
6
7
GND
V
IN
VIN
OCP
CURRENT
LIMIT
THRESHOLD
CURRENT
SENSE AMPLIFIER
OVP
THERMAL
SHUTDOWN
SHUTDOWN
LOGIC
UVLO
BOOT
REGULATOR
CLK
GENERATOR
FREQUENCY FOLDBACK
(⅛
f
SW
, ¼ f
SW
, ½ f
SW
, f
SW
)
R
S
Q
RAMP
GENERATOR
SHUTDOWN IC
0.880V
0.680V
1.20V
1.2µA
0.8V VOLTAGE
REFERENCE
ON
EN
4
PGOOD
OFF
V
BIAS
= 1.1V
g
m
BST
FB
SW
V
OUT
ADP2302/ADP2303
NC
5
08833-042
Figure 44. Functional Block Diagram