BQ24751 datasheet(6/39 Pages) TI | Host-controlled Multi-chemistry Battery Charger with System Power Selector, AC Over-Power Protection, and Programmable OVP

6 page

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RECOMMENDED OPERATING CONDITIONS

PACKAGE THERMAL DATA

ELECTRICAL CHARACTERISTICS

bq24751

SLUS734 – DECEMBER 2006

over operating free-air temperature range (unless otherwise noted)

MIN

NOM

MAX

UNIT

–1

PVCC, ACP, ACN, SRP, SRN, BAT, BATDRV, ACDRV

REGN, LODRV

6.5

VDAC, IADAPT

3.6

VREF

3.3

Voltage range

ACSET, SRSET, TS, ACDET, ACOP, CHGEN, CELLS, ACGOOD, LEARN,

5.5

OVPSET

VADJ

6.5

BTST, HIDRV with respect to AGND and PGND

AGND, PGND

–0.3

0.3

Maximum difference voltage: ACP–ACN, SRP–SRN

–0.3

0.3

Junction temperature range

–40

125

°C

Storage temperature range

–55

150

°C

PACKAGE

TA = 70°C POWER RATING

DERATING FACTOR ABOVE TA = 25°C

QFN – RHD(1)

°C/W

2.36 W

0.028 W/

°C

(1)

This data is based on using the JEDEC High-K board and the exposed die pad is connected to a Cu pad on the board. This is

connected to the ground plane by a 2x3 via matrix.

7.0 V

≤ V

PVCC≤ 24 V, 0°C < TJ < +125°C, typical values are at TA = 25°C, with respect to AGND (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

OPERATING CONDITIONS

VPVCC_OP

PVCC Input voltage operating range

5.0

24.0

CHARGE VOLTAGE REGULATION

VBAT_REG_RNG

BAT voltage regulation range

4-4.512 V per cell, times 2,3,4 cells

18.048

VVDAC_OP

VDAC reference voltage range

2.6

3.6

VADJ_OP

VADJ voltage range

REGN

8 V, 8.4 V, 9.024 V

–0.5

0.5

Charge voltage regulation accuracy

12 V, 12.6 V, 13.536 V

–0.5

0.5

16 V, 16.8 V, 18.048 V

–0.5

0.5

Charge voltage regulation set to

VADJ connected to REGN, 8.4 V, 12.6 V,

–0.5

0.5

default to 4.2 V per cell

16.8 V

CHARGE CURRENT REGULATION

VIREG_CHG

Charge current regulation differential

VIREG_CHG = VSRP– VSRN

100

voltage range

VSRSET_OP

SRSET voltage range

VDAC

VIREG_CHG = 40–100 mV

–3

VIREG_CHG = 20 mV

–5

Charge current regulation accuracy

VIREG_CHG = 5 mV

–25

VIREG_CHG = 1.5 mV

–33

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