MCP73838-G8I/UN View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

MCP73838-G8I/UN

Advanced Stand-Alone Li-Ion / Li-Polymer Battery Charge Management Controller with Autonomous AC-Adapter or USB-Port Source Selection

Microchip Technology 

MCP73837/8

Note: Unless otherwise indicated, VDD = [VREG(typical) + 1V], IOUT = 30 mA and TA= +25°C, Constant-voltage mode.

UVLOVAC

FIGURE 2-25:

(USB = High)

VUSB UVLO Start Delay

5.0

0.12

4.0

0.1

3.0

2.0

1.0

VDD = 5.2V

RPROG = USB_Low

180 mAh Li-Ion Battery

0.0

0 20 40 60 80 100 120 140 160 180

0.08

0.06

0.04

0.02

0

Time (Minutes)

FIGURE 2-28:

Complete Charge Cycle

(180 mAh Li-Ion Battery).

5.0

1.2

4.0

1

0.8

3.0

0.6

2.0

0.4

1.0 VDD = 5.2V

RPROG = 1 kΩ

0.2

1200 mAh Li-Ion Battery

0.0

0

Time (Minutes)

FIGURE 2-26:

Complete Charge Cycle

(1200 mAh Li-Ion Battery).

4.5

1.2

4.0

3.5

0.9

3.0

2.5

0.6

2.0

1.5

1.0

VDD = 5.2V

RPROG = 1 kΩ

0.3

0.5 1200 mAh Li-Ion Battery

0.0

0

0 1 2 3 4 5 6 7 8 9 10

Time (Minutes)

FIGURE 2-27:

Typical Charge Profile in

Thermal Regulation (1200 mAh Li-Ion Battery).

5.0

4.0

3.0

2.0

1.0

0.0

0

C.C. Begins

0.12

0.1

0.08

C.V. Begins 0.06

Preconditioning

1234

VDD = 5.2V

RPROG = USB_Low

180 mAh Li-Ion Battery

0.04

0.02

0

5 6 7 8 9 10

Time (Minutes)

FIGURE 2-29:

Typical Charge Profile in

Preconditioning and CC-CV (180 mAh Li-Ion

Battery).

DS22071A-page 12

© 2007 Microchip Technology Inc.

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