BQ20Z45-R1DBTR datasheet(5/18 Pages) TI

5 / 18 page

bq20z45-R1

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SLUS992 – DECEMBER 2009

ELECTRICAL CHARACTERISTICS

over operating free-air temperature range (unless otherwise noted), TA = –40°C to 85°C, V(REG25) = 2.41 V to 2.59 V,

V(BAT) = 14 V, C(REG25) = 1 µF, C(REG33) = 2.2 µF; typical values at TA = 25°C (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

SUPPLY CURRENT

I(NORMAL)

Firmware running

550

µA

I(SLEEP)

Sleep Mode

CHG FET on; DSG FET on

124

µA

CHG FET off; DSG FET on

µA

CHG FET off; DSG FET off

µA

I(SHUTDOWN)

Shutdown Mode

0.1

µA

SHUTDOWN WAKE; TA = 25°C (unless otherwise noted)

Shutdown exit at VSTARTUP

I(PACK)

µA

threshold

SRx WAKE FROM SLEEP; TA = 25°C (unless otherwise noted)

Positive or negative wake

threshold with 1.00 mV, 2.25

V(WAKE)

1.25

mV, 4.5 mV and 9 mV

programmable options

V (WAKE) = 1 mV;

-0.7

0.7

I(WAKE)= 0, RSNS1 = 0, RSNS0 = 1;

V(WAKE) = 2.25 mV;

I(WAKE) = 1, RSNS1 = 0, RSNS0 = 1;

-0.8

0.8

I(WAKE) = 0, RSNS1 = 1, RSNS0 = 0;

V(WAKE_ACR)

Accuracy of V(WAKE)

V(WAKE) = 4.5 mV;

I(WAKE) = 1, RSNS1 = 1, RSNS0 = 1;

-1.0

1.0

I(WAKE) = 0, RSNS1 = 1, RSNS0 = 0;

V(WAKE) = 9 mV;

-1.4

1.4

I(WAKE) = 1, RSNS1 = 1, RSNS0 = 1;

Temperature drift of V(WAKE)

V(WAKE_TCO)

0.5

%/°C

accuracy

Time from application of current

t(WAKE)

and wake of bq20z45-R1

POWER-ON RESET

VIT–

Negative-going voltage input

Voltage at REG25 pin

1.70

1.80

1.90

Vhys

Hysteresis

VIT+ – VIT-

150

250

tRST

RESET active low time

active low time after power up or watchdog reset

100

250

560

µs

WATCHDOG TIMER

tWDTINT

Watchdog start up detect time

250

500

1000

tWDWT

Watchdog detect time

100

150

µs

2.5V LDO; I(REG33OUT) = 0 mA; TA = 25°C (unless otherwise noted)

4.5 < VCC or BAT < 25 V;

V(REG25)

Regulator output voltage

I(REG25OUT) ≤ 16 mA;

2.41

2.5

2.59

TA = –40°C to 100°C

Regulator output change with

I(REG25OUT) = 2 mA;

ΔV(REG25TEMP)

±0.2

temperature

TA = –40°C to 100°C

5.4 < VCC or BAT < 25 V;

ΔV(REG25LINE)

Line regulation

I(REG25OUT) = 2 mA

0.2 mA

≤ I(REG25OUT) ≤ 2 mA

ΔV(REG25LOAD)

Load Regulation

0.2 mA

≤ I(REG25OUT) ≤ 16 mA

drawing current until

I(REG25MAX)

Current Limit

REG25 = 2 V to 0 V

3.3V LDO; I(REG25OUT) = 0 mA; TA = 25°C (unless otherwise noted)

4.5 < VCC or BAT < 25 V;

V(REG33)

Regulator output voltage

I(REG33OUT) ≤ 25 mA;

3.3

3.6

TA = –40°C to 100°C

Regulator output change with

I(REG33OUT) = 2 mA;

ΔV(REG33TEMP)

±0.2

temperature

TA = –40°C to 100°C

5.4 < VCC or BAT < 25 V;

ΔV(REG33LINE)

Line regulation

I(REG33OUT) = 2 mA

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