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| BQ20Z45-R1 Datasheet, PDF (5/18 Pages) Texas Instruments – SBS 1.1-Compliant Gas Gauge and Protection Enabled With Impedance Track™ | |||
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bq20z45-R1
www.ti.com
SLUS992 â DECEMBER 2009
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range (unless otherwise noted), TA = â40°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
SUPPLY CURRENT
I(NORMAL)
Firmware running
550
I(SLEEP)
Sleep Mode
CHG FET on; DSG FET on
124
CHG FET off; DSG FET on
90
CHG FET off; DSG FET off
52
I(SHUTDOWN)
Shutdown Mode
SHUTDOWN WAKE; TA = 25°C (unless otherwise noted)
I(PACK)
Shutdown exit at VSTARTUP
threshold
0.1
1
1
SRx WAKE FROM SLEEP; TA = 25°C (unless otherwise noted)
V(WAKE)
Positive or negative wake
threshold with 1.00 mV, 2.25
mV, 4.5 mV and 9 mV
programmable options
1.25
10
V(WAKE_ACR)
Accuracy of V(WAKE)
V(WAKE_TCO)
Temperature drift of V(WAKE)
accuracy
V (WAKE) = 1 mV;
I(WAKE)= 0, RSNS1 = 0, RSNS0 = 1;
V(WAKE) = 2.25 mV;
I(WAKE) = 1, RSNS1 = 0, RSNS0 = 1;
I(WAKE) = 0, RSNS1 = 1, RSNS0 = 0;
V(WAKE) = 4.5 mV;
I(WAKE) = 1, RSNS1 = 1, RSNS0 = 1;
I(WAKE) = 0, RSNS1 = 1, RSNS0 = 0;
V(WAKE) = 9 mV;
I(WAKE) = 1, RSNS1 = 1, RSNS0 = 1;
-0.7
0.7
-0.8
0.8
-1.0
1.0
-1.4
1.4
0.5
t(WAKE)
Time from application of current
and wake of bq20z45-R1
1
10
POWER-ON RESET
VITâ
Negative-going voltage input
Vhys
Hysteresis
tRST
RESET active low time
WATCHDOG TIMER
Voltage at REG25 pin
VIT+ â VIT-
active low time after power up or watchdog reset
1.70
1.80
1.90
50
150
250
100
250
560
tWDTINT
Watchdog start up detect time
tWDWT
Watchdog detect time
2.5V LDO; I(REG33OUT) = 0 mA; TA = 25°C (unless otherwise noted)
V(REG25)
Regulator output voltage
4.5 < VCC or BAT < 25 V;
I(REG25OUT) ⤠16 mA;
TA = â40°C to 100°C
ÎV(REG25TEMP)
Regulator output change with
temperature
I(REG25OUT) = 2 mA;
TA = â40°C to 100°C
ÎV(REG25LINE) Line regulation
5.4 < VCC or BAT < 25 V;
I(REG25OUT) = 2 mA
ÎV(REG25LOAD) Load Regulation
0.2 mA ⤠I(REG25OUT) ⤠2 mA
0.2 mA ⤠I(REG25OUT) ⤠16 mA
I(REG25MAX)
Current Limit
drawing current until
REG25 = 2 V to 0 V
250
500
1000
50
100
150
2.41
2.5
2.59
±0.2
3
10
7
25
25
50
5
40
75
3.3V LDO; I(REG25OUT) = 0 mA; TA = 25°C (unless otherwise noted)
V(REG33)
Regulator output voltage
4.5 < VCC or BAT < 25 V;
I(REG33OUT) ⤠25 mA;
TA = â40°C to 100°C
ÎV(REG33TEMP)
Regulator output change with
temperature
I(REG33OUT) = 2 mA;
TA = â40°C to 100°C
ÎV(REG33LINE) Line regulation
5.4 < VCC or BAT < 25 V;
I(REG33OUT) = 2 mA
3
3.3
3.6
±0.2
3
10
UNIT
µA
µA
µA
µA
µA
µA
mV
mV
%/°C
ms
V
mV
µs
ms
µs
V
%
mV
mV
mA
V
%
mV
Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): bq20z45-R1
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