BQ24610RGET datasheet(8/33 Pages) TI

Part #	BQ24610RGET

Description	Stand-Alone Synchronous Switch-Mode Li-Ion or Li-Polymer Battery Charger with System Power Selector and Low Iq

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Manufacturer	TI [Texas Instruments]

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8 / 33 page

bq24610

bq24617

SLUS892 – DECEMBER 2009

www.ti.com

ELECTRICAL CHARACTERISTICS (continued)

5.0V

≤ V(VCC) ≤ 28V, 0°C < TJ < +125°C, typical values are at TA = 25°C, with respect to GND (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

PWM DRIVERS TIMING

Dead time when switching between LSD and HSD, no

Driver dead time

30

ns

load at LSD and HSD

PWM OSCILLATOR

VRAMP_HEIGHT

PWM ramp height

As percentage of VCC

7

%

PWM switching frequency(2)

510

600

690

kHz

INTERNAL SOFT START (8 steps to regulation current ICHG)

Soft start steps

8

step

Soft start step time

1.6

ms

CHARGER SECTION POWER-UP SEQUENCING

Charge-enable delay after power-up

Delay from CE=1 to charger is allowed to turn on

1.5

s

LOGIC IO PIN CHARACTERISTICS (CE, STAT1, STAT2, PG)

VIN_LO

CE input low threshold voltage

0.8

V

VIN_HI

CE input high threshold voltage

2.1

VBIAS_CE

CE input bias current

V = 3.3V (CE has internal 1M

Ω pulldown resistor)

6

μA

STAT1, STAT2, PG output low

VOUT_LO

Sink Current = 5 mA

0.5

V

saturation voltage

IOUT_HI

Leakage current

V = 32 V

1.2

µA

(2)

Verified by design

8

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