BQ2148LB- datasheet(7/8 Pages) TI

Part #	BQ2148LB-

Description	Smart Battery Module with LEDs and Pack Supervisor

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bq2148 Preliminary

DC Electrical Characteristics (T

A =TOPR)

Symbol

Parameter

Minimum

Typical

Maximum

Unit

Conditions/Notes

VOP

Operating voltage, B1P to

B4N

4.0

-

18

V

ICCA

Operating current

-

350

µA

RON

On resistance, B1P to POS

-

50

m

Ω

TA = 25

°C, VOP = 10V

DC Thresholds (TA =TOPR)

Symbol

Parameter

Value

Tolerance

Unit

Notes

VOV

Overvoltage threshold

4.25

± 50mV

V

VCE

Charge enable voltage

VOV - 100mV

± 50mV

V

VUV

Undervoltage limit

2.25

± 100mV

V

IOC

Overcurrent limit

3.4

A

TA = 25

°C

3.8

A

TA = 60

°C

tUVD

Undervoltage delay

950

±50%

ms

TA = 30°C

VCD

Charge detect threshold

70

-60, +80

mV

tOVD

Overvoltage delay

950

±50%

ms

TA = 30°C

tOCD

Overcurrent delay

12

±60%

ms

TA = 30°C

Note:

The thresholds above reflect the operation of a bq2148 using the standard bq2058 IC (VOV = 4.25V).

Specify other versions of the bq2058 by indicating the appropriate VOV threshold in Table 1.

LED Option:

L = LEDs plus switch

Blank = No LEDs or switch

Notes:

1.

Requires configuration sheet (Table 1)

2.

Example production part number: bq2148LB-001

Ordering Information

bq2148

B —

Customer Code:

Blank = Sample or Pre-production1

KT = Evaluation system

XXX = Customer-specific; assigned by Unitrode2

Package Option:

B = Board-level product

Device:

Smart Battery Module with LEDs and Pack Supervisor

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