BQ24298_15 Datasheet, PDF (10/51 Pages) Texas Instruments – bq24298 I2C Controlled 3A Single Cell USB Charger With Narrow VDC Power Path Management and Adjustable Voltage USB OTG

bq24298
SLUSC59 – APRIL 2015
7.6 Timing Requirements
VBUS/BAT POWER UP
t_BADSRC
Bad source detection duration
BOOST MODE OPERATION
t_{OTG_OCP_OFF}
t_{OTG_OCP_ON}
QON TIMING
OTG mode over-current protection off cycle time
OTG mode over-current protection on cycle time
t_{QON_ON_1}
QON low time to turn on BATFET and exit ship mode
t_{QON_RST}
QON low time to reset BATFET
t_{BATFET_RST}
BATFET reset duration
LOGIC I/O PIN CHARACTERISTICS (OTG, CE, STAT, QON, PSEL, PG)
t_{BATFET_DLY}
BATFET disable delay time
DIGITAL CLOCK AND WATCHDOG TIMER
t_WDT
REG05[5:4] = 11
REGN LDO disabled
REGN LDO enabled
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MIN TYP MAX UNIT
30
ms
32
ms
450
µs
0.6
10 12.5
250
1.5 s
15 s
400 ms
7
9
11 s
138 172
s
138 168
Figure 1. I²C-Compatible Interface Timing Diagram
7.7 Typical Characteristics
Table 1. Table of Figures
Charging Efficiency vs Charging Current (DCR = 10 mΩ)
System Efficiency vs System Load Current (DCR = 10 mΩ)
Boost Mode Efficiency vs VBUS Load Current (DCR = 10 mΩ)
SYS Voltage Regulation vs System Load Current
Boost Mode VBUS Voltage Regulation (Typical Output = 4.998 V, REG06[7:4] = 0111) vs VBUS Load Current
SYS Voltage vs Temperature
BAT Voltage vs Temperature
Input Current Limit vs Temperature
Charge Current vs Package Temperature
FIGURE
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
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