MCP73842-820IUN Просмотр технического описания (PDF) - Microchip Technology

Номер в каталоге

Компоненты Описание

производитель

MCP73842-820IUN

Advanced Single or Dual Cell Lithium-Ion/Lithium-Polymer Charge Management Controllers

Microchip Technology 

Note: The qualification parameters are continuously

monitored throughout the charge cycle.

Note

Initialize

VDD > VUVLO

EN High

Yes

No

STAT1 = Off

Preconditioning Phase

Charge Current = IPREG

Reset Safety Timer

VBAT > VPTH

Yes

Note Temperature OK

Yes

No

VBAT > VPTH

No

STAT1 = Flashing

Charge Current = 0

STAT1 = On

Yes

Constant-Current

Phase

Charge Current = IREG

Reset Safety Timer

Constant-Voltage Phase

Output Voltage = VREG

VBAT = VREG

Yes

IOUT < ITERM

Elapsed Timer

Expired

Yes

Charge Termination

Charge Current = 0

Reset Safety Timer

No

No

No

Safety Timer

Expired

Yes Fault

Charge Current = 0

Reset Safety Timer

Yes Safety Timer

Expired

Yes

Temperature OK

No

Yes

Temperature OK

VDD < VUVLO

or EN Low

No

Yes Temperature OK

No

STAT1 = Flashing

Safety Timer Suspended

Charge Current = 0

No

STAT1 = Flashing

Yes

No

STAT1 = Flashing

Safety Timer Suspended

Charge Current = 0

No

STAT1 = Flashing

Safety Timer Suspended

Charge Current = 0

VDD < VUVLO

VBAT < VRTH

or EN Low

Yes No

STAT1 = Off

FIGURE 4-1:

Operational Flow Algorithm - MCP73841 and MCP73842.

Share Link: