BQ24298_15 datasheet(10/51 Pages) TI

Part #	BQ24298

Description	bq24298 I2C Controlled 3A Single Cell USB Charger With Narrow VDC Power Path Management and Adjustable Voltage USB OTG

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Manufacturer	TI [Texas Instruments]

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bq24298

SLUSC59 – APRIL 2015

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7.6 Timing Requirements

MIN

TYP

MAX

UNIT

VBUS/BAT POWER UP

tBADSRC

Bad source detection duration

30

ms

BOOST MODE OPERATION

tOTG_OCP_OFF

OTG mode over-current protection off cycle time

32

ms

tOTG_OCP_ON

OTG mode over-current protection on cycle time

450

µs

QON TIMING

tQON_ON_1

QON low time to turn on BATFET and exit ship mode

0.6

1.5

s

tQON_RST

QON low time to reset BATFET

10

12.5

15

s

tBATFET_RST

BATFET reset duration

250

400

ms

LOGIC I/O PIN CHARACTERISTICS (OTG, CE, STAT, QON, PSEL, PG)

tBATFET_DLY

BATFET disable delay time

7

9

11

s

DIGITAL CLOCK AND WATCHDOG TIMER

REGN LDO disabled

138

172

tWDT

REG05[5:4] = 11

s

REGN LDO enabled

138

168

Figure 1. I2C-Compatible Interface Timing Diagram

7.7 Typical Characteristics

Table 1. Table of Figures

FIGURE

Charging Efficiency vs Charging Current (DCR = 10 m

Ω)

Figure 2

System Efficiency vs System Load Current (DCR = 10 m

Ω)

Figure 3

Boost Mode Efficiency vs VBUS Load Current (DCR = 10 m

Ω)

Figure 4

SYS Voltage Regulation vs System Load Current

Figure 5

Boost Mode VBUS Voltage Regulation (Typical Output = 4.998 V, REG06[7:4] = 0111) vs VBUS Load Current

Figure 6

SYS Voltage vs Temperature

Figure 7

BAT Voltage vs Temperature

Figure 8

Input Current Limit vs Temperature

Figure 9

Charge Current vs Package Temperature

Figure 10

10

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