BQ20Z75_08 Datasheet, PDF (5/20 Pages) Texas Instruments – SBS 1.1-COMPLIANT GAS GAUGE AND PROTECTION-ENABLED IC WITH IMPEDANCE TRACK

bq20z75
www.ti.com............................................................................................................................................................... SLUS723C – JULY 2007 – REVISED JULY 2008
Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
PARAMETER
V _SUP
V
Supply voltage
Minimum startup voltage
STARTUP
V_IN
Input Voltage Range
V_GPOD
A_GPOD
C_REG25
C_REG33
C_VCELL+
C_PACK
Output Voltage Range
Drain Current⁽¹⁾
2.5V LDO Capacitor
3.3V LDO Capacitor
Cell Voltage Output Capacitor
PACK input block resistor⁽²⁾
PIN
VCC, VBAT
VCC, BAT, PACK
VC(n)–VC(n+1); n = 1,2,3,4
VC1, VC2, VC3, VC4
VC5
ASRN, ASRP
PACK, PMS
GPOD
GPOD
REG25
REG33
VCELL+
PACK
(1) Use external resistor to limit current to GPOD to 1mA in high voltage application.
(2) External resistor to limit inrush current PACK pin required.
MIN
NOM MAX UNIT
4.5
25 V
5.5
V
0
5V
0
V_SUP
V
0
0.5 V
–0.5
0.5 V
0
25 V
0
25 V
1 mA
1
µF
2.2
µF
0.1
µF
1
kΩ
Electrical Characteristics
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
SUPPLY CURRENT
I_NORMAL
I_SLEEP
Firmware running
Sleep Mode
CHG FET on; DSG FET on
CHG FET off; DSG FET on
550
µA
124
µA
90
µA
CHG FET off; DSG FET off
52
µA
I_{SHUTDOW Shutdown Mode}
N
SHUTDOWN WAKE; T_A = 25°C (unless otherwise noted)
I_PACK
Shutdown exit at V_STARTUP threshold
SRx WAKE FROM SLEEP; T_A = 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
0.1
1 µA
1 µA
1.25
10 mV
V_WAKE = 1.0mV;
IWAKE=0, RSNS1=0, RSNS0=1;
–0.7
0.7
V_{WAKE_A Accuracy of VWAKE}
CR
V_WAKE = 2.25mV;
IWAKE =1, RSNS1=0, RSNS0=1;
IWAKE =0, RSNS1=1, RSNS0=0;
V_WAKE = 4.5mV;
IWAKE =1, RSNS1=1, RSNS0=1;
IWAKE =0, RSNS1=1, RSNS0=0;
–0.8
–1.0
0.8
mV
1.0
V_WAKE = 9mV;
IWAKE =1, RSNS1=1, RSNS0=1;
–1.4
1.4
V_{WAKE_T}
CO
t_WAKE
Temperature drift of V_WAKE accuracy
Time from application of current and
wake of bq20z75
0.5
%/°C
1
10 ms
POWER-ON RESET
V_IT–
Negative-going voltage input
Voltage at REG25 pin
1.70
1.80
1.90 V
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