bq24170
bq24172
www.ti.com
SLUSAD2A –NOVEMBER 2010–REVISED NOVEMBER 2010
ELECTRICAL CHARACTERISTICS (continued)
4.5V ≤ V(PVCC, AVCC) ≤ 17V, –40°C < TJ + 125°C, typical values are at TA = 25°C, with respect to AGND (unless otherwise
noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNITS
BAT OVER-VOLTAGE COMPARATOR
As percentage of VBAT_REG (bq24170) or VFB_REG
(bq24172)
VOV_RISE
VOV_FALL
INPUT OVER-VOLTAGE COMPARATOR (ACOV)
Over-voltage rising threshold
104%
102%
As percentage of VSRN (bq24170) or VFB_REG
(bq24172)
Over-voltage falling threshold
AC Over-Voltage Rising Threshold to turn
off ACFET
VACOV
OVPSET rising
OVPSET falling
OVPSET rising
1.55
1.6
50
1
1.65
V
VACOV_HYS
tACOV_RISE_DEG
AC over-voltage falling hysteresis
mV
µs
AC Over-Voltage Rising Deglitch to turn off
ACFET and Disable Charge
AC Over-Voltage Falling Deglitch to Turn on
ACFET
tACOV_FALL_DEG
OVPSET falling
30
ms
INPUT UNDER-VOLTAGE COMPARATOR (ACUV)
AC Under-Voltage Falling Threshold to turn
off ACFET
VACUV
OVPSET falling
OVPSET rising
OVPSET falling
0.45
0.5
100
1
0.55
V
VACUV_HYS
tACOV_FALL_DEG
AC Under-Voltage Rising Hysteresis
mV
µs
AC Under-Voltage Falling Deglitch to turn
off ACFET and Disable Charge
AC Under-Voltage Rising Deglitch to turn on
ACFET
tACOV_RISE_DEG
OVPSET rising
30
ms
°C
THERMAL REGULATION
TJ_REG
Junction Temperature Regulation Accuracy ISET > 120mV, Charging
120
THERMAL SHUTDOWN COMPARATOR
TSHUT
Thermal shutdown rising temperature
Temperature rising
Temperature falling
Temperature rising
Temperature falling
150
20
°C
°C
µs
TSHUT_HYS
Thermal shutdown hysteresis
Thermal shutdown rising deglitch
Thermal shutdown falling deglitch
tSHUT_RISE_DEG
tSHUT_FALL_DEG
100
10
ms
THERMISTOR COMPARATOR
Cold Temperature Threshold, TS pin
Voltage Rising Threshold
Charger suspends charge. As percentage to
VVREF
VLTF
72.5%
0.2%
73.5% 74.5%
0.4% 0.6%
Cold Temperature Hysteresis, TS pin
Voltage Falling
VLTF_HYS
VHTF
As percentage to VVREF
As percentage to VVREF
As percentage to VVREF
Hot Temperature TS pin voltage rising
Threshold
46.6%
44.2%
47.2% 48.8%
Cut-off Temperature TS pin voltage falling
Threshold
VTCO
44.7% 45.2%
Deglitch time for Temperature Out of Range VTS > VLTF, or VTS < VTCO, or
tTS_CHG_SUS
tTS_CHG_RESUME
20
ms
ms
Detection
VTS < VHTF
Deglitch time for Temperature in Valid
Range Detection
VTS < VLTF – VLTF_HYS or VTS >VTCO, or VTS
VHTF
>
400
CHARGE OVER-CURRENT COMPARATOR (CYCLE-BY-CYCLE)
Charge Over-Current Rising Threshold,
VSRP>2.2V
VOCP_CHRG
Current as percentage of fast charge current
Measure VSRP-SRN
160%
VOCP_MIN
VOCP_MAX
HSFET OVER-CURRENT COMPARATOR (CYCLE-BY-CYCLE)
IOCP_HSFET Current limit on HSFET
CHARGE UNDER-CURRENT COMPARATOR (CYCLE-BY-CYCLE)
VUCP Charge under-current falling threshold
Charge Over-Current Limit Min, VSRP<2.2V
45
75
mV
mV
Charge Over-Current Limit Max, VSRP>2.2V Measure VSRP-SRN
Measure on HSFET
8
1
11.5
A
Measure on V(SRP-SRN)
5
9
mV
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