BQ40Z50-R2 datasheet(14/55 Pages) TI2

14 / 55 page

7.18 CHG, DSG FET Drive (continued)

Typical values stated where TA = 25°C and VCC = 14.4 V, Min/Max values stated where TA = –40°C to 85°C and VCC =

2.2 V to 26 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX UNIT

Fall time

VDSG from VDSG(ON)(TYP) to 1 V, VBAT ≥ 2.2 V, CL = 4.7 nF

between DSG and PACK, 5.1 kΩ between DSG and CL,

10 MΩ between PACK and DSG

300

µs

VCHG from VCHG(ON)(TYP) to 1 V, VBAT ≥ 2.2 V, CL = 4.7 nF

between CHG and BAT, 5.1 kΩ between CHG and CL, 10

MΩ between BAT and CHG

200

7.19 PCHG FET Drive

Typical values stated where TA = 25°C and VCC = 14.4 V, Min/Max values stated where TA = –40°C to 85°C and VCC =

2.2 V to 26 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX UNIT

V(FETON)

Output voltage,

PCHG on

VPCHG(ON) = VVCC – VPCHG, 10 MΩ between VCC and

PCHG

V(FETOFF)

Output voltage,

PCHG off

VPCHG(OFF) = VVCC – VPCHG, 10 MΩ between VCC and

PCHG

–0.4

0.4

Rise time

VPCHG from 10% to 90% VPCHG(ON)(TYP), VVCC ≥ 8 V, CL =

4.7 nF between PCHG and VCC, 5.1 kΩ between PCHG

and CL, 10 MΩ between VCC and CHG

200

µs

Fall time

VPCHG from 90% to 10% VPCHG(ON)(TYP), VCC ≥ 8 V, CL =

4.7 nF between PCHG and VCC, 5.1 kΩ between PCHG

and CL, 10 MΩ between VCC and CHG

200

µs

7.20 FUSE Drive

Typical values stated where TA = 25°C and VCC = 14.4 V, Min/Max values stated where TA = –40°C to 85°C and VCC =

2.2 V to 26 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX UNIT

VOH

Output voltage

high

VBAT ≥ 8 V, CL = 1 nF, IAFEFUSE = 0 µA

8.65

VBAT < 8 V, CL = 1 nF, IAFEFUSE = 0 µA

VBAT – 0.1

VBAT

VIH

High-level input

1.5

2.0

2.5

IAFEFUSE(PU)

Internal pullup

current

VBAT ≥ 8 V, VAFEFUSE = VSS

150

330

RAFEFUSE

Output impedance

2.6

3.2

kΩ

CIN

Input capacitance

tDELAY

Fuse trip detection

delay

128

256

µs

tRISE

Fuse output rise

time

VBAT ≥ 8 V, CL = 1 nF, VOH = 0 V to 5 V

µs

7.21 Internal Temperature Sensor

Typical values stated where TA = 25°C and VCC = 14.4 V, Min/Max values stated where TA = –40°C to 85°C and VCC =

2.2 V to 26 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX UNIT

VTEMP

Internal

temperature

sensor voltage drift

VTEMPP

–1.9

–2.0

–2.1

mV/°C

VTEMPP – VTEMPN, assured by design

0.177

0.178

0.179

BQ40Z50-R2

SLUSCS4C – JUNE 2017 – REVISED APRIL 2021

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