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MCP73841 Datasheet(PDF) 12 Page - Microchip Technology

No. de pieza MCP73841
Descripción Electrónicos  Advanced Single or Dual Cell Lithium-Ion/ Lithium-Polymer Charge Management Controllers
PDF  24 Pages
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Fabricante Electrónico  MICROCHIP [Microchip Technology]
Página de inicio  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP73841 Datasheet(HTML) 12 Page - Microchip Technology

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FIGURE 4-1:
Operational Flow Algorithm - MCP73841 and MCP73842.
Preconditioning Phase
Charge Current = IPREG
Reset Safety Timer
Yes
Initialize
No
Yes
VBAT > VPTH
STAT1 = On
VBAT > VPTH
Yes
VDD < VUVLO
No
No
Safety Timer
Yes
Temperature OK
No
STAT1 = Flashing
Safety Timer Suspended
Charge Current = 0
Fault
Charge Current = 0
Reset Safety Timer
or EN Low
No
STAT1 = Flashing
Constant-Current
Charge Current = IREG
Reset Safety Timer
VBAT = VREG
No
No
Safety Timer
Yes
Temperature OK
Constant-Voltage Phase
Output Voltage = VREG
IOUT < ITERM
Yes
VBAT < VRTH
Elapsed Timer
Charge Termination
Charge Current = 0
Reset Safety Timer
No
STAT1 = Off
Yes
Yes
Temperature OK
No
STAT1 = Flashing
Safety Timer Suspended
Charge Current = 0
Yes
Yes
VDD < VUVLO
or EN Low
No
Yes
Yes
Temperature OK
No
STAT1 = Flashing
Charge Current = 0
Yes
No
STAT1 = Off
VDD > VUVLO
Phase
Expired
Expired
No
STAT1 = Flashing
Safety Timer Suspended
Charge Current = 0
EN High
Expired
Note: The qualification parameters are continuously
monitored throughout the charge cycle.
Note
Note



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