BQ24725ARGRR datasheet(11/42 Pages) TI1

Part #	BQ24725ARGRR

Description	1-4 Cell Li Battery SMBus Charge Controller with N-Channel Power MOSFET Selector and Advanced Circuit Protection

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bq24725A

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SLUSAL0

– SEPTEMBER 2011

TYPICAL CHARACTERISTICS

Table 1. Table of Graphs

FIGURE NO.

VCC, ACDET, REGN and ACOK Power up

Figure 5

Charge Enable by ILIM

Figure 6

Current Soft-start

Figure 7

Charge Disable by ILIM

Figure 8

Continuous Conduction Mode Switching Waveforms

Figure 9

Cycle-by-Cycle Synchronous to Non-synchronous

Figure 10

100% Duty and Refresh Pulse

Figure 11

System Load Transient (Input DPM)

Figure 12

Battery Insertion

Figure 13

Efficiency vs Output Current

Figure 14

SPACER

CH1: ILIM, 1V/div, CH4: inductor current, 1A/div, 20ms/div

CH1: VCC, 10V/div, CH2: ACDET, 2V/div, CH3: ACOK, 5V/div,

CH4: REGN, 5V/div, 40ms/div

Figure 5. VCC, ACDET, REGN and ACOK Power Up

Figure 6. Charge Enable by ILIM

CH1: ILIM, 1V/div, CH4: inductor current, 1A/div, 4us/div

CH1: Vin, 10V/div, CH2: LODRV, 5V/div, CH3: PHASE, 10V/div,

CH4: inductor current, 2A/div, 2ms/div

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