MCP73223-22SI/MF MICROCHIP [Microchip Technology], MCP73223-22SI/MF Datasheet - Page 15

• Manufacturer Part Number: MCP73223-22SI/MF
• Description: Lithium Iron Phosphate (LiFePO4) Battery Charge Management Controller with Input Overvoltage Protection
• Manufacturer: MICROCHIP [Microchip Technology]

4.0
The MCP73123/223 are simple, but fully integrated lin-
ear charge management controllers.
the operational flow algorithm.
FIGURE 4-1:
© 2009 Microchip Technology Inc.
OVERVOLTAGE PROTECTION
Die Temperature > T
V
V
DD
DD
TEMPERATURE FAULT
STAT = Flashing (Op.1)
DEVICE OVERVIEW
> V
STAT = Hi-Z (Op.2)
No Charge Current
> V
No Charge Current
Timer Suspended
Timer Suspended
OVP
STAT = Hi-Z
OVP
Die Temperature < T
Charge Mode Resume
SD
The MCP73123/223 Flow Chart.
V
DD
V
SDHYS
DD
V
< V
V
DD
DD
< V
OVP
< V
> V
OVP
OVP
Figure 4-1
OVP
CONSTANT VOLTAGE MODE
CHARGE COMPLETE MODE
PRECONDITIONING MODE
Charge Current = I
FAST CHARGE MODE
Charge Current = I
Charge Voltage = V
SHUTDOWN MODE
depicts
No Charge Current
PROG > 200 kΩ
Timer Enabled
V
STAT = LOW
Timer Enable
STAT = LOW
STAT = HI-Z
Timer Reset
STAT = LOW
Timer Reset
STAT = HI-Z
V
Timer Reset
DD
DD
< V
or
< V
UVLO
PD
V
V
V
V
BAT
BAT
BAT
BAT
PREG
REG
REG
< V
> V
= V
< I
TERM
PTH
PTH
REG
V
Timer Expired
V
Timer Expired
BAT
BAT
< V
> V
RTH
MCP73123/223
PTH
BATTERY SHORT PROTECTION
Charge Current = I
V
STAT = Flashing (Op.1)
STAT = Flashing (Op.1)
STAT = Flashing (Op.1)
BAT
STAT = Hi-Z (Op.2)
Timer Suspended
STAT = Hi-Z (Op.2)
No Charge Current
STAT = Hi-Z (Op.2)
No Charge Current
Timer Suspended
Timer Suspended
< V
TIMER FAULT
TIMER FAULT
Charge Mode Resume
SHORT
V
BAT
DS22191A-page 15
> V
SHORT
SHORT