MCP73841-820I/UN データシートの表示（PDF） - Microchip Technology

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MCP73841-820I/UN

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

Microchip Technology 

MCP73841/2/3/4

Functional Block Diagram

VDD

SENSE

1 kΩ

VREF

90 kΩ

10 kΩ

EN

VREF

–

Charge Current

+ Charge 90 kΩ Control Amplifier

Current

+

Amplifier

–

12 kΩ

Charge

Termination

Comparator

10 kΩ

+

-

IREG/10

UVLO

+ Comparator

-

VUVLO

Precondition

Control

VDD

Voltage Control

Amplifier

+

-

VREF

Charge_ok

Precon

Precondition

Comp. +

-

Constant-Voltage/

Recharge Comp.

+

-

Power-On

Delay

VREF

DRV

300 kΩ

(825 kΩ)

VBAT

74.21 kΩ

0.79 kΩ

150.02 kΩ

Bias and

Reference

Generator

VUVLO

VREF (1.2V)

THREF

THERM

TIMER

100 kΩ

50 kΩ

Temperature

Comparators

+

-

+

-

50 kΩ

MCP73841 and MCP73842 Only

IREG/10

Oscillator

Charge Control,

Charge Timers,

And

Status Logic

Drv Stat 1

5.15 kΩ

(4.29 kΩ)

VSS

STAT1

Charge_ok

DS21823B-page 2

 2004 Microchip Technology Inc.

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