Datasheet

 2011-2013 Microchip Technology Inc. DS20005049C-page 11
MCP73830/L
4.0 DEVICE OVERVIEW
The MCP73830/L are simple, but fully integrated, linear
charge management controllers. Figure 4-1 depicts the
operational flow algorithm.
FIGURE 4-1: The MCP73830/L Flowchart.
V
BAT
> V
PTH
*Continuously monitored
SHUTDOWN MODE
V
DD
< (UVLO)
V
DD
< (V
BAT
)*
V
BAT
> 96.5% V
REG
STAT = High-Z
STANDBY MODE*
CE = High
STAT = High-Z
PRECONDITIONING
MODE
Charge Current = I
REG
STAT = Low
PRE-TIMER FAULT
NO Charge Current
STAT = Flash (2 Hz)
Preconditioning Timer
Suspended
TIMER FAULT
NO Charge Current
STAT = High-Z
Timer Suspended
CONSTANT CURRENT
MODE
Charge Current = I
PREG
STAT = Low
Preconditioning Timer
Suspended
Elapsed Timer Enabled
CONSTANT VOLTAGE
MODE
Charge Voltage = V
REG
STAT = Low
CHARGE COMPLETE
MODE
NO Charge Current
STAT = Low
Timer Reset
V
BAT
= V
REG
V
BAT
>= V
PTH
V
BAT
< V
PTH
I
BAT
< I
TERM
V
BAT
< V
RTH
Recharge Mode
(available when selected device
has automatic recharge option).
CE = Low
CE = Low