BQ24735RGRT datasheet(11/46 Pages) TI1

Part #	BQ24735RGRT

Description	1- to 4-Cell Li Battery SMBus Charge Controller for Supporting Turbo Boost Mode With N-Channel Power MOSFET Selector

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Manufacturer	TI1 [Texas Instruments]

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bq24735

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SLUSAK9B – SEPTEMBER 2011 – REVISED APRIL 2015

Typical Characteristics (continued)

CH1: PHASE, 10 V/div,

CH2: LODRV, 5 V/div,

CH1: PHASE, 10 V/div,

CH2: LODRV, 5 V/div,

CH3: HIDRV, 10 V/div

CH3: HIDRV, 10 V/div,

CH4: inductor current, 2 A/div, 400 ns/div

CH4: inductor current, 1 A/div, 400 ns/div

Figure 5. Continuous Conduction Mode Switching

Figure 6. Cycle-by-Cycle Synchronous to Nonsynchronous

Waveforms

CH2: battery current, 2 A/div,

CH3: adapter current, 2 A/div,

CH1: PHASE, 10 V/div,

CH2: LODRV, 5 V/div,

CH4: system load current, 2 A/div, 100 µs/div

CH4: inductor current, 2 A/div, 4 µs/div

Figure 8. System Load Transient (Input DPM)

Figure 7. 100% Duty and Refresh Pulse

CH3: adapter current, 2 A/div,

CH4: battery current, 2 A/div, 10 ms/div

Figure 9. Buck-to-Boost Mode

Figure 10. Boost-to-Buck Mode

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