MCP73861 Microchip Technology, Inc., MCP73861 Datasheet - Page 14

• 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.

FIGURE 4-2:
Note 1:
Note 2:
Yes
Preconditioning Phase
Charge Current = I
Reset Safety Timer
Temperature OK
The qualification parameters are continuously
monitored throughout the charge cycle. Refer to
Section
Preconditioning” , for details.
The charge current will be scaled based on the
die temperature during thermal regulation. Refer
to Section 4.5, “Thermal Regulation”, for
details.
Safety Timer
V
BAT
Expired
Operational Flow Algorithm.
> V
No
No
PTH
4.1,
No
STAT1 = Off
STAT2 = Flashing
Safety Timer Suspended
Charge Current = 0
PREG
“Charge
Yes
Yes
Fault
Charge Current = 0
Reset Safety Timer
Qualification
V
or EN Low
DD
< V
Yes
UVLO
and
No
STAT1 = Off
STAT2 = On
No
NOTE 2
NOTE 1
NOTE 1
Yes
Yes
Constant Current
Phase
Charge Current = I
Reset Safety Timer
Temperature OK
Temperature OK
V
V
Safety Timer
V
DD
BAT
BAT
Initialize
EN High
Expired
> V
= V
> V
Yes
Yes
Yes
No
No
UVLO
REG
PTH
No
STAT1 = Off
STAT2 = Flashing
Safety Timer Suspended
Charge Current = 0
REG
Yes
No
STAT1 = Off
STAT2 = Off
STAT1 = On
STAT2 = Off
No
STAT1 = Off
STAT2 = Flashing
Charge Current = 0
Yes
Constant Voltage Phase
Output Voltage = V
Safety Timer Suspended
Temperature OK
Elapsed Timer
Charge Current = 0
I
OUT
STAT1 = Flashing
Expired
< I
No
TERM
REG
No
Yes
Charge Termination
Charge Current = 0
Reset Safety Timer
V
V
or EN Low
DD
BAT
< V
< V
Yes
UVLO
RTH
No
STAT1 = Flashing
STAT2 = Off