BQ24157S Datasheet, PDF (10/45 Pages) Texas Instruments – Full USB Compliance and USB-OTG Support

Not Recommended for New Designs
bq24157S
SLUSB76B – FEBRUARY 2013 – REVISED MAY 2015
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Typical Performance Characteristics (continued)
Using circuit shown in Figure 28, T_A = 25°C, unless otherwise specified.
95
5.09
5.08
90
5.07
85
5.06
5.05
80
5.04
75
70
0
VBAT = 2.7 V
VBAT = 3.6 V
VBAT = 4.2 V
50
100
150
200
Load Current at VBUS (mA)
5.03
IBUS = 50 mA
IBUS = 100 mA
5.02
IBUS = 200 mA
5.01
IBUS = 375 mA
2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0 4.2
VBAT (V)
5.09
5.08
5.07
5.06
5.05
5.04
5.03
5.02
5.01
5
0
Figure 13. Boost Efficiency
VBAT = 2.7 V
VBAT = 3.6 V
VBAT = 4.2 V
50
100
150
200
Load Current at VBUS (mA)
Figure 15. Load Regulation for Boost
Figure 14. Line Regulation For Boost
AC Coupled
10 mV/div
AC Coupled
50 mA/div
VOUT
INDUCTOR
AC Coupled
10 mA/div
IBAT
200 ns/div
I_CHG = 1.2 A
Figure 16. Output Ripple for Voltage and Current
10
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