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| BQ27750 Datasheet, PDF (6/34 Pages) Texas Instruments – Impedance Track Battery Gas Gauge and Protection Solution for 1-Series Cell Li-Ion Battery Packs | |||
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bq27750
SLUSCM7 â JUNE 2017
www.ti.com
6.8 Power-On Reset (POR)
Typical values stated where TA = 25ºC, Min/Max values stated where TA = â40ºC to 85ºC (unless otherwise noted)
PARAMETER
TEST CONDITION
MIN TYP
MAX
VREGITâ
Negative-going voltage
input
VREG
1.51 1.55
1.59
VHYS
Power-on reset
hysteresis
VREGIT+ â VREGITâ
70
100
130
tRST
Power-on reset time
200
300
400
UNIT
V
mV
µs
6.9 Internal 1.8-V LDO
Typical values stated where TA = 25ºC, Min/Max values stated where TA = â40ºC to 85ºC (unless otherwise noted)
PARAMETER
TEST CONDITION
MIN TYP
MAX
VREG
ÎVO(TEMP)
Regulator voltage
Regulator output over
temperature
ÎVREG/ÎTA, IREG = 10 mA
1.6
1.8
2.0
±0.25%
ÎVO(LINE)
ÎVO(LOAD)
IREG
Line regulation
Load regulation
Regulator output
current limit
ÎVREG/ÎVBAT, VBAT = 10 mA
ÎVREG/ÎIREG, IREG = 0 mA to 10 mA
VREG = 0.9 x VREG(NOM), VIN > 2.2 V
â0 .6%
â1.5%
20
0.5%
1.5%
ISC
Regulator short-circuit
current limit
VREG = 0 x VREG(NOM)
25
40
50
PSRRREG
Power supply rejection
ratio
ÎVBAT/ÎVREG, IREG = 10 mA, VIN > 2.5 V, f = 10 Hz
40
VSLEW
Slew rate enhancement
voltage threshold
VREG
1.58 1.65
UNIT
V
mA
mA
dB
V
6.10 Current Wake Comparator
Typical values stated where TA = 25ºC, Min/Max values stated where TA = â40ºC to 85ºC (unless otherwise noted)
PARAMETER
TEST CONDITION
MIN
TYP
MAX
VWAKE = VSRP â VSRN WAKE_CONTROL[WK1, WK0]
= 0,0
±0.3 ±0.625
±0.9
VWAKE
Wake voltage
threshold
VWAKE = VSRP â VSRN WAKE_CONTROL[WK1, WK0]
= 0,1
VWAKE = VSRP â VSRN WAKE_CONTROL[WK1, WK0]
= 1,0
±0.6
±1.25
±1.8
±1.2
±2.5
±3.6
VWAKE = VSRP â VSRN WAKE_CONTROL[WK1, WK0]
= 1,1
±2.4
±5.0
±7.2
VWAKE(DRIFT)
Temperature drift of
VWAKE accuracy
tWAKE
Time from application
of current to wake
0.5%
0.25
0.5
tWAKE(SU)
Wake up comparator [WKCHGEN] = 0 and [WKDSGEN] = 0 to
startup time
[WKCHGEN] = 1 and [WKDSGEN] = 1
250
640
UNIT
mV
mV
mV
mV
°C
ms
µs
6.11 Coulomb Counter
Typical values stated where TA = 25ºC, Min/Max values stated where TA = â40ºC to 85ºC (unless otherwise noted)
PARAMETER
TEST CONDITION
MIN TYP
MAX
Input voltage range
â100
100
Full scale range
Differential nonlinearity
16-bit, No missing codes
âVREF1/10
+VREF1/10
±1
Integral nonlinearity
16-bit, Best fit over input voltage range
±5.2
±22.3
Offset error
16-bit, Post-calibration
±1.3
±2.6
Offset error drift
15-bit + sign, Post-calibration
0.04
0.07
UNIT
mV
mV
LSB
LSB
LSB
LSB/°C
6
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