MCP73837 Microchip Technology, Inc., MCP73837 Datasheet - Page 15

• Manufacturer Part Number: MCP73837
• Manufacturer: Microchip Technology, Inc.

4.0
The MCP73837/8 devices are simple, yet fully integrated linear charge management controllers.
operational flow algorithm.
FIGURE 4-1:
© 2007 Microchip Technology Inc.
SYSTEM TEST (LDO) MODE
TEMPERATURE FAULT
DEVICE OVERVIEW
V
No Charge Current
THERM
Timer Suspended
Timer Suspended
STAT1 = LOW
STAT2 = LOW
STAT1 = Hi-Z
STAT2 = Hi-Z
PG = LOW
PG = LOW
> (V
DD
-100 mV)
Flow Chart.
PRECONDITIONING MODE
CONSTANT VOLTAGE MODE
CHARGE COMPLETE MODE
FAST CHARGE MODE
Charge Current = I
SHUTDOWN MODE*
Charge Current = I
Charge Voltage = V
STANDBY MODE *
V
No Charge Current
BAT
PROG > 200k Ω
STAT1 = LOW
STAT2 = Hi-Z
STAT1 = LOW
STAT2 = Hi-Z
STAT1 = Hi-Z
STAT2 = LOW
Timer Enabled
STAT1 = Hi-Z
STAT2 = Hi-Z
STAT1 = LOW
STAT2 = Hi-Z
PG = LOW
Timer Reset
V
V
STAT1 = Hi-Z
PG = LOW
STAT2 = Hi-Z
PG = LOW
PG = LOW
PG = LOW
DD
DD
> (V
PG = Hi-Z
<
< V
REG
V
BAT
STOP
I
Timer Expired
BAT
V
V
V
+100 mV)
BAT
BAT
BAT
-
REG
< I
100 mV
PREG
REG
< V
> V
= V
TERM
PTH
REG
PTH
V
V
BAT
BAT
> V
*
< V
Timer Expired
Continuously Monitored
PTH
MCP73837/8
RTH
Figure 4-1
TIMER FAULT
No Charge Current
Timer Suspended
DS22071A-page 15
STAT1 = Hi-Z
STAT2 = Hi-Z
PG = LOW
depicts the