BQ24259RGET datasheet(10/48 Pages) TI1

Part #	BQ24259RGET

Description	Controlled 2A Single Cell USB Charger

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Manufacturer	TI1 [Texas Instruments]

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bq24259

SLUSCF0A – NOVEMBER 2015 – REVISED JANUARY 2016

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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

260

µs

QON TIMING

tQON

QON pin high time to turn on BATFET

2

ms

DIGITAL CLOCK AND WATCHDOG TIMER

tWDT

REG05[5:4] = 11

REGN LDO disabled

112

160

s

REGN LDO enabled

136

160

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 V(BUS) Load Current (DCR = 10 mΩ)

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

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