BQ24298_15 Datasheet, PDF (39/51 Pages) Texas Instruments – bq24298 I2C Controlled 3A Single Cell USB Charger With Narrow VDC Power Path Management and Adjustable Voltage USB OTG

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9.2.3 Application Performance Plots
bq24298
SLUSC59 – APRIL 2015
VBUS
5V/div
REGN
5V/div
SYS
2V/div
IVBUS
100mA/div
100ms/div
VBAT = 3.2 V
Figure 39. Power Up with Charge Enabled
STAT
2V/div
CE
5V/div
SW
5V/div
IBAT
1A/div
4ms/div
SYS3p7
100mV/div
Figure 41. Charge Disable
SW
2V/div
IL
1A/div
4ms/div
VBUS = 5 V, VBAT = 3.6 V, ICHG = 2.5 A
Figure 43. PFM Switching in Buck Mode
STAT
2V/div
CE
2V/div
SW
5V/div
IBAT
1A/div
200ms/div
VBAT = 5 V
Figure 40. Charge Enable
IL
1A/div
SW
2V/div
400ns/div
VBUS = 5 V, No Battery, ISYS = 40 mA, Charge Disable
Figure 42. PWM Switching in Buck Mode
SYS3p5
500mV/div
ISYS
2A/div
IVBUS
2A/div
2ms/div
VBUS = 5 V, IIN = 3 A, No Battery, Charge Disable
Figure 44. Input Current DPM Response without Battery
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