MCP73853IMF MICROCHIP [Microchip Technology], MCP73853IMF Datasheet - Page 2

• Manufacturer Part Number: MCP73853IMF
• Description: USB Compatible Li-Ion/Li-Polymer Charge Management Controllers
• Manufacturer: MICROCHIP [Microchip Technology]

MCP73853/55
Typical Application
Functional Block Diagram
DS21915A-page 2
THERM
THREF
TIMER
PROG
V
V
DD1
DD2
EN
110 k
10 k
100 k
50 k
50 k
V
REF
5V
G = 0.001
4.7 µF
V
Charge
Termination
Comparator
+
+
MCP73853 ONLY
–
–
Bias and
Reference
Generator
+
-
+
-
UVLO
Direction
Control
U
COMPARATOR
Temperature
Comparators
VLO
11 k
3 k
400 mA Lithium-Ion Battery Charger
I
REG
10 k
Power-On
Delay
/12
90
k
V
V
10
3
2
1
5
V
UVLO
REF
REF
(1.2V)
V
V
EN
STAT1
PROG
Charge Current
Control Amplifier
MCP73855
DD1
SET
Precondition
Control
+
–
TIMER
V
V
Oscillator
BAT1
BAT2
V
SS
I
REG
V
8
9
6
4, 7
DD
/12
Charge_OK
Precon
Voltage Control
Amplifier
Charge Control,
Charge Timers,
and
Status Logic
0.1 µF
V
Constant-voltage/
Recharge Comp.
4.7 µF
–
REF
+
Precondition
Comp
.
+
–
Drv Stat 1
Drv Stat 2
Charge_OK
V
REF
+
+
–
–
 2004 Microchip Technology Inc.
MCP73853 ONLY
Single
Lithium-Ion
Cell
4 k
600 k
149 k
1.58 k
300 k
10.3 k
STAT1
STAT2
V
V
V
V
V
V
V
BAT1
BAT2
BAT3
SET
SS1
SS2
SS3