BQ24170 Datasheet, PDF (14/35 Pages) Texas Instruments – 1.6-MHz Synchronous Switch-Mode Li-Ion and Li-Polymer Stand-Alone Battery Charger

bq24170
bq24172
SLUSAD2A – NOVEMBER 2010 – REVISED NOVEMBER 2010
TYPICAL CHARACTERISTICS
Table 1. Table of Graphs⁽¹⁾
FIGURE
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
Figure 17
DESCRIPTION
AVCC, VREF, ACDRV and STAT Power Up (ISET=0)
Charge Enable by ISET
Current Soft Start
Charge Disable by ISET
Continuous Conduction Mode Switching
Discontinuous Conduction Mode Switching
BATFET to ACFET Transition during Power Up
System Load Transient (Input Current DPM)
Battery Insertion and Removal
Battery to Ground Short Protection
Battery to Ground Short Transition
Efficiency vs Output Current (VIN=15V)
Efficiency vs Output Current (VOUT=3.8V)
(1) All waveforms and data are measured on HPA610 and HPA706 EVMs.
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AVCC
10V/div
VREF
2V/div
ACDRV
5V/div
STAT
10V/div
20 ms/div
Figure 5. Power Up (ISET = 0)
ISET
500mV/div
REGN
5V/div
STAT
10V/div
IL
1A/div
400 ms/div
Figure 6. Charge Enable by ISET
PH
5V/div
IOUT
1A/div
4 ms/div
Figure 7. Current Soft Start
ISET
500mV/div
PH
5V/div
IL
2A/div
2 ms/div
Figure 8. Charge Disable by ISET
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