MCP73861 Microchip Technology, Inc., MCP73861 Datasheet - Page 2

• Manufacturer Part Number: MCP73861
• Description: Advanced Single or Dual Cell, Fully Integrated Li-ion / Li-polymer Charge Management Controllersthe MCP7386X Family of Devices Are Highly Advancedlinear Charge Management Controllers For Use in Spacelimited,cost-sensitive Applications. The MCP73861 A
• Manufacturer: Microchip Technology, Inc.

MCP73861/2
Typical Application
Functional Block Diagram
DS21893A-page 2
THERM
THREF
TIMER
PROG
V
V
DD1
DD2
EN
110k
10k
100k
50k
50k
V
REF
G=0.001
5V
V
Charge
Termination
Comparator
UVLO
+
-
+
-
+
-
+
-
Bias and
Reference
Generator
4.7µF
Direction
U
COMPARATOR
Temperature
Comparators
Control
VLO
11k
1k
I
REG
/12
10k
1.2A Lithium-Ion Battery Charger
Power-On
Delay
90
k
V
V
V
UVLO
REF
REF
2, 3
14
16
15
(1.2V)
1
5
Charge Current
Control Amplifier
V
V
EN
STAT1
STAT2
PROG
Precondition
Control
+
–
MCP73861
DD
SET
Oscillator
THERM
THREF
TIMER
V
V
BAT3
V
BAT
I
SS
REG
V
DD
/12
12
10, 11
6
7
8
4, 9, 13
Charge_OK
Precon
6.19 k
Voltage Control
Amplifier
7.32 k
Charge Control,
Charge Timers,
And
Status Logic
0.1
µF
V
–
Constant Voltage/
Recharge Comp.
+
REF
4.7 µF
Precondition
Comp.
Charge_OK
Drv Stat 1
Drv Stat 2
V
+
-
+
+
REF
-
-
Single
Lithium-Ion
Cell
 2004 Microchip Technology Inc.
4k
600k
(1.65M
148.42k
1.58k
300.04k
10.3k
(8.58k
)
)
Values in ( )
reflect the
MCP73862
device
STAT1
STAT2
V
V
V
V
V
V
V
BAT1
BAT2
BAT3
SET
SS1
SS2
SS3