MCP73811 查看數據表（PDF） - Microchip Technology

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MCP73811

Simple, Miniature Single-Cell, Fully Integrated Li-Ion / Li-Polymer Charge Management Controllers

Microchip Technology 

4.8 Thermal Regulation

The MCP73811/2 limits the charge current based on

the die temperature. The thermal regulation optimizes

the charge cycle time while maintaining device

reliability. Figure 4-2 depicts the thermal regulation for

the MCP73811/2.

.

525

450

RPROG = 2 kΩ

375

300

225

150

75

0

FIGURE 4-2:

Junction Temperature (°C)

Thermal Regulation.

MCP73811/2

4.9 Thermal Shutdown

The MCP73811/2 suspends charge if the die

temperature exceeds 150°C. Charging will resume

when the die temperature has cooled by approximately

10°C. The thermal shutdown is a secondary safety

feature in the event that there is a failure within the

thermal regulation circuitry.

© 2007 Microchip Technology Inc.

DS22036A-page 11

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