MCP73833 Microchip Technology, Inc., MCP73833 Datasheet - Page 10
MCP73833
Manufacturer Part Number
MCP73833
Description
1A output current linear charge management controller. Includes integrated pass transistor, integrated current sensing, and reverse discharge protection. Also includes safety features such as cell temperature monitoring, on-chip thermal regulation an
Manufacturer
Microchip Technology, Inc.
Datasheet
1.MCP73833.pdf
(26 pages)
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MCP73833/4
4.0
The MCP73833/4 is a highly advanced linear charge
management controller. Refer to the functional block
diagram and
flow algorithm from charge initiation to completion and
automatic recharge.
FIGURE 4-1:
DS22005A-page 10
SYSTEM TEST (LDO) MODE
TEMPERATURE FAULT
V
No Charge Current
THERM
FUNCTIONAL DESCRIPTION
Timer Suspended
Timer Suspended
STAT1 = Hi-Z
STAT2 = Hi-Z
PROG > 20 kΩ
PG = LOW
STAT1 = LOW
STAT2 = LOW
PG = LOW
Figure 4-1
> (V
DD
- 100 mv)
Flow Chart.
that depicts the operational
CONSTANT VOLTAGE MODE
CHARGE COMPLETE MODE
PRECONDITIONING MODE
FAST CHARGE MODE
V
SHUTDOWN MODE *
Charge Current (I
Charge Current (I
Charge Voltage (V
STANDBY MODE *
BAT
No Charge Current
PROG > 200 kΩ
Timer Enabled
STAT1 = LOW
STAT1 = HI-Z
STAT2 = HI-Z
STAT1 = HI-Z
STAT2 = HI-Z
STAT1 = LOW
STAT1 = LOW
STAT2 = LOW
V
STAT2 = Hi-Z
STAT2 = Hi-Z
STAT1 = HI-Z
STAT2 = Hi-Z
(V
V
PG = LOW
Timer Reset
PG = LOW
Timer Reset
DD
PG = HI-Z
PG = LOW
PG = LOW
PG = LOW
DD
REG
< V
< V
+ 100 mv)
UVLO
BAT
V
V
V
V
Timer Expired
BAT
BAT
BAT
BAT
PREG
REG
REG
< V
> V
= V
< I
TERM
PTH
PTH
REG
V
V
BAT
BAT
< V
> V
Timer Expired
* Continuously Monitored
RTH
PTH
© 2006 Microchip Technology Inc.
No Charge Current
Timer Suspended
TIMER FAULT
STAT1 = Hi-Z
STAT2 = Hi-Z
PG = LOW