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| BQ27531-G1 Datasheet, PDF (6/21 Pages) Texas Instruments – Battery Management Unit Impedance Track Fuel Gauge for Use With the bq2419x Charger Controller | |||
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bq27531-G1
SLUSBE7 â MARCH 2013
DIGITAL INPUT AND OUTPUT DC CHARACTERISTICS
TA = â40°C to 85°C, typical values at TA = 25°C and VREGIN = 3.6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
VOL
Output voltage, low (SCL, SDA,
SOC_INT, BSDA, BSCL)
IOL = 3 mA
VOH(PP)
Output voltage, high (BSDA,
BSCL)
IOH = â1 mA
VCC â 0.5
VOH(OD)
VIL
Output voltage, high (SDA, SCL,
SOC_INT)
Input voltage, low (SDA, SCL)
Input voltage, low (BI/TOUT)
External pullup resistor connected to
VCC
BAT INSERT CHECK MODE active
VCC â 0.5
â0.3
â0.3
Input voltage, high (SDA, SCL)
1.2
VIH
Input voltage, high (BI/TOUT)
BAT INSERT CHECK MODE active
1.2
VIL(CE)
VIH(CE)
Ilkg (1)
Input voltage, low (CE)
Input voltage, high (CE)
Input leakage current (I/O pins)
VREGIN = 2.8 to 4.5V
2.65
(1) Specified by design. Not production tested.
POWER-ON RESET
TA = â40°C to 85°C, typical values at TA = 25°C and VREGIN = 3.6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
VIT+
VHYS
Positive-going battery voltage
input at VCC
Power-on reset hysteresis
2.05
45
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TYP
MAX UNIT
0.4 V
V
0.6
V
0.6
V
VCC + 0.3
0.8
V
0.3 μA
TYP
MAX UNIT
2.15
2.20 V
115
185 mV
2.5V LDO REGULATOR
TA = â40°C to 85°C, CLDO25 = 1μF, VREGIN = 3.6V (unless otherwise noted)
PARAMETER
TEST CONDITION
VREG25
Regulator output voltage (VCC)
2.8V ⤠VREGIN ⤠4.5V, IOUT ⤠16mA(1)
2.45V ⤠VREGIN < 2.8V (low battery),
IOUT ⤠3mA
MIN
NOM
2.3
2.5
2.3
(1) LDO output current, IOUT, is the total load current. LDO regulator should be used to power internal fuel gauge only.
MAX
2.6
UNIT
V
V
INTERNAL CLOCK OSCILLATORS
TA = â40°C to 85°C, 2.4 V < VCC < 2.6 V; typical values at TA = 25°C and VCC = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
fOSC
fLOSC
High Frequency Oscillator
Low Frequency Oscillator
8.389
32.768
UNIT
MHz
kHz
6
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Copyright © 2013, Texas Instruments Incorporated
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