MCP73864T-I/ML View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

MCP73864T-I/ML

Advanced Single or Dual Cell, Fully Integrated Li-Ion/Li-Polymer Charge Management Controllers

Microchip Technology 

MCP73861/2/3/4

Typical Application

1.2A Lithium-Ion Battery Charger

5V

4.7µF

2, 3 VDD

VBAT3 12

1 VSET

VBAT 10, 11

4.7 µF

14 EN THREF 6

16 STAT1 THERM 7 6.19 kΩ

15

5

STAT2

PROG

TIMER 8 7.32 kΩ

VSS 4, 9, 13

0.1

µF

MCP73861/3

+

Single

Lithium-Ion

– Cell

Note: Pin numbers shown are for QFN

package. Please refer to Section 6.0

“Applications” for details.

Functional Block Diagram

VDD1

VDD2

PROG

Direction

Control

G = 0.001

VDD

1 kΩ

11 kΩ

VREF

90 Charge Current

kΩ Control Amplifier

+

–

Voltage Control

Amplifier

4 kΩ

VBAT1

VBAT2

VREF

110 k Ω

10 kΩ

Charge

Termination

10 kΩ

Comparator

+

–

IREG/12

UVLO

COMPARATOR

+

–

VUVLO

Precondition

Control

VREF

Charge_OK Precondition

Precon

Comp.

Constant-Voltage/

Recharge Comp.

EN

Power-On

Delay

VREF

600 kΩ

(1.65 MΩ)

VBAT3

148.42 kΩ

1.58 kΩ

Values in ( )

reflect the

MCP73862/4

devices

300.04 kΩ

THREF

THERM

TIMER

100 kΩ

50 kΩ

50 kΩ

Bias and

Reference

Generator

VUVLO

VREF (1.2V)

Temperature

Comparators

+

–

+

–

Drv Stat 1

IREG/12

Charge Control,

Charge Timers

Oscillator

And Status Logic Drv Stat 2

VSET

10.3 kΩ

(8.58 kΩ)

VSS1

VSS2

VSS3

STAT1

STAT2

Charge_OK

 2004-2013 Microchip Technology Inc.

DS21893F-page 3

Share Link: