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MCP73833 データシート(PDF) 13 Page - Microchip Technology

部品番号 MCP73833
部品情報  Stand-Alone Linear Li-Ion / Li-Polymer Charge Management Controller
PDF  32 Pages
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メーカー  MICROCHIP [Microchip Technology]
ホームページ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP73833 データシート(HTML) 13 Page - Microchip Technology

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© 2009 Microchip Technology Inc.
DS22005B-page 13
MCP73833/4
4.0
FUNCTIONAL DESCRIPTION
The MCP73833/4 is a highly advanced linear charge
management controller. Refer to the functional block
diagram and Figure 4-1 that depicts the operational
flow algorithm from charge initiation to completion and
automatic recharge.
FIGURE 4-1:
Flow Chart.
VBAT < VPTH
* Continuously Monitored
Timer Expired
SHUTDOWN MODE *
VDD < VUVLO
VDD < VBAT
STAT1 = HI-Z
STAT2 = HI-Z
PG = HI-Z
STANDBY MODE *
VBAT (VREG + 100 mv)
PROG > 200 k
Ω
STAT1 = HI-Z
STAT2 = HI-Z
PG = LOW
SYSTEM TEST (LDO) MODE
VTHERM > (VDD - 100 mv)
PROG > 20 k
Ω
STAT1 = LOW
STAT2 = LOW
PG = LOW
Timer Suspended
TEMPERATURE FAULT
No Charge Current
STAT1 = Hi-Z
STAT2 = Hi-Z
PG = LOW
Timer Suspended
TIMER FAULT
No Charge Current
STAT1 = Hi-Z
STAT2 = Hi-Z
PG = LOW
Timer Suspended
PRECONDITIONING MODE
Charge Current (IPREG
STAT1 = LOW
STAT2 = Hi-Z
PG = LOW
Timer Reset
FAST CHARGE MODE
Charge Current (IREG
STAT1 = LOW
STAT2 = Hi-Z
PG = LOW
Timer Enabled
CONSTANT VOLTAGE MODE
Charge Voltage (VREG
STAT1 = LOW
STAT2 = Hi-Z
PG = LOW
CHARGE COMPLETE MODE
No Charge Current
STAT1 = HI-Z
STAT2 = LOW
PG = LOW
Timer Reset
VBAT > VPTH
VBAT = VREG
VBAT < ITERM
Timer Expired
VBAT > VPTH
VBAT < VRTH



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