BQ20Z75DBTR-V180 Datasheet, PDF (6/23 Pages) Texas Instruments – SBS 1.1-COMPLIANT GAS GAUGE AND PROTECTION-ENABLED IC WITH IMPEDANCE TRACK

bq20z75-V180
SLUSA22 – DECEMBER 2009
www.ti.com
Electrical Characteristics (continued)
over operating free-air temperature range (unless otherwise noted), T_A = –40°C to 85°C, V_REG25 = 2.41 V to 2.59 V, V_BAT =
14V, C_REG25 = 1µF, C_REG33 = 2.2µF; typical values at T_A = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
V_hys
Hysteresis
t_RST
RESET active low time
V_IT+ – V_IT–
active low time after power up or
watchdog reset
50
150
250 mV
100
250
560 µs
WATCHDOG TIMER
t_WDTINT Watchdog start up detect time
t_WDWT Watchdog detect time
2.5V LDO; I_REG33OUT = 0mA; T_A = 25°C (unless otherwise noted)
V_REG25 Regulator output voltage
4.5 < VCC or BAT < 25V; I_REG25OUT
≤16mA; T_A = –40°C to 100°C
ΔV_REG25 Regulator output change with
TEMP
temperature
I_REG25OUT = 2mA; T_A = –40°C to
100°C
ΔV_{REG25L Line regulation}
INE
5.4 < VCC or BAT < 25V; I_REG25OUT
= 2mA
ΔV_{REG25L Load Regulation}
OAD
0.2mA ≤ I_REG25OUT ≤ 2mA
0.2mA ≤ I_REG25OUT ≤ 16mA
I_{REG25MA Current Limit}
X
drawing current until REG25 = 2V to
0V
3.3V LDO; I_REG25OUT = 0mA; T_A = 25°C (unless otherwise noted)
V_REG33 Regulator output voltage
4.5 < VCC or BAT < 25V; I_REG33OUT
≤ 25mA; T_A = –40°C to 100°C
ΔV_REG33 Regulator output change with
TEMP
temperature
I_REG33OUT = 2mA; T_A = –40°C to
100°C
ΔV_{REG33L Line regulation}
INE
5.4 < VCC or BAT < 25V; I_REG33OUT
= 2mA
ΔV_{REG33L Load Regulation}
OAD
0.2mA ≤ I_REG33OUT ≤ 2mA
0.2mA ≤ I_REG33OUT ≤ 25mA
I_{REG33MA Current Limit}
X
drawing current until REG33 = 3V
short REG33 to VSS, REG33 = 0V
250
500
1000 ms
50
100
150 µs
2.41
2.5
2.59 V
±0.2
%
3
10 mV
7
25
mV
15
50
5
40
75 mA
3
3.3
3.6 V
±0.2
%
3
17 mV
7
17
mV
40
100
25
100
145
mA
12
65
THERMISTOR DRIVE
V_TOUT Output voltage
R_DS(ON) TOUT pass element resistance
VCELL+ HIGH VOLTAGE TRANSLATION
I_TOUT = 0mA; T_A = 25°C
I_TOUT = 1mA; R_DS(ON) = (V_REG25 –
V_TOUT) / 1mA; T_A = –40°C to 100°C
V_REG25
50
V
100 Ω
V_VCELL+O
UT
VC(n) – VC(n+1) = 0V; T_A = –40°C
to 100°C
VC(n) – VC(n+1) = 4.5V; T_A = –40°C
to 100°C
0.950
0.275
0.975
0.3
1
0.375
V_VCELL+R
EF
V_VCELL+P
ACK
V_VCELL+B
AT
CMMR
Translation output
Common mode rejection ratio
internal AFE reference voltage ; T_A =
–40°C to 100°C
0.965
0.975 0.985 V
Voltage at PACK pin; T_A = –40°C to
100°C
0.98*V_PAC
K^/18
V_PACK/18
1.02*V_PA
CK^/18
Voltage at BAT pin; T_A = –40°C to
100°C
0.98*V_BAT/
18
V_BAT/18
1.02*V_BA
T^/18
VCELL+
40
dB
K
Cell scale factor
K= {VCELL+ output (VC5=0V;
VC4=4.5V) – VCELL+ output
(VC5=0V; VC4=0V)}/4.5
K= {VCELL+ output (VC2=13.5V;
VC1=18V) – VCELL+ output
(VC5=13.5V; VC1=13.5V)}/4.5
0.147
0.150 0.153
0.147
0.150 0.153
6
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