Datasheet

MCP73833/4
DS22005B-page 2 © 2009 Microchip Technology Inc.
Typical Application
Functional Block Diagram
STAT1
V
DD
V
SS
PROG
V
BAT
+
-
Single
Li-Ion
Cell
1,2
MCP73833
6
9,10
7
1µF
1A Li-Ion Battery Charger
5
V
IN
470Ω
470Ω
470Ω
STAT2
PG
THERM
T
4
38
1µF
1kΩ
10 kΩ
+
-
Reference
Generator
V
REF
(1.21V)
V
DD
STAT1
PROG
V
BAT
G=0.001
V
SS
Direction
Control
54 kΩ
121 kΩ
UVLO
+
-
PRECONDITION
6µA
+
-
TERMINATIO N
+
-
111 kΩ
+
-
CA
10 kΩ
157.3 kΩ
6kΩ
48 kΩ
470.6 kΩ
CHARG E
+
-
+
-
VA
72.7 kΩ
310 kΩ
6µA
G=0.001
1kΩ
+
-
CURRENT
LIMIT
10 µA
+
-
LTVT
+
-
HTVT470.6kΩ
121 kΩ
THERM
50 µA
Charge
Control,
Timer,
and
Status
Logic
STAT2
PG (TE)
+
-
LDO
1MΩ
175 kΩ
SHDN