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BQ24157 Datasheet(PDF) 9 Page - Texas Instruments

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Part # BQ24157
Description  Fully Integrated Switch-Mode Charger With USB Compliance and USB-OTG Support
Download  39 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

BQ24157 Datasheet(HTML) 9 Page - Texas Instruments

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500mS/div
VSW
5V/div
I
200mA/div
BAT
I
0.1 A/div
BAT
OTG
2V/div
WriteCommand
15MinuteMode
32SMode
1S/div
I
0.5 A/div
L
VSW
2V/div
100nS/div
VBUS
2V/div
VSW
2V/div
I
20mA/div
BUS
10mS/div
VSW
2V/div
I
0.5 A/div
L
2
s/div
m
VBUS
2V/div
VSW
5V/div
I
0.5 A/div
BAT
10ms/div
bq24157
www.ti.com
SLUSB80 – SEPTEMBER 2012
TYPICAL PERFORMANCE CHARACTERISTICS
Using circuit shown in Figure 2, TA = 25°C, unless otherwise specified.
vertical spacer
ADAPTER INSERTION
CYCLE BY CYCLE CURRENT LIMITING IN CHARGE MODE
Figure 3. VBUS = 0-5V, Iin_limit = 500mA, Voreg = 4.2V
Figure 4. VBUS = 5V, VBAT = 3.5V
VBAT = 3.5V, ICHG = 550mA, 32S mode
Charge Mode Overload Operation
PWM CHARGING WAVEFORMS
POOR SOURCE DETECTION
Figure 5. VBUS = 5 V, VBAT = 2.6 V, Voreg = 4.2 V,
Figure 6. VBUS = 5 V at 8 mA, VBAT = 3.2V,
ICHG = 1550 mA
Iin_limit = 100 mA, ICHG = 550 mA
CHARGE CURRENT RAMP UP
INPUT CURRENT CONTROL
Figure 7. Vin = 5 V, VBAT = 3. 2V, No Input Current Limit,
Figure 8. VBUS = 5 V, VBAT = 3.1V, Iin_limit = 100/500 mA,
ICHG = 1550mA
(OTG Control, 15 Minute Mode), Iin_limit = 100 mA
(I2C Control, 32 Second Mode)
Copyright © 2012, Texas Instruments Incorporated
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