BQ25700A Datasheet, PDF (13/82 Pages) Texas Instruments – SMBus Multi-Chemistry Battery Buck-Boost Charge Controller With System Power Monitor and Processor Hot Monitor

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Electrical Characteristics (continued)
over T_J = –40 to 125°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V_{BAT_SYSMIN_HYST}
Fast charge mode to LDO
mode threshold hysteresis
as percentage of 0x3E()
BATTERY LOWV COMPARATOR (Pre-charge to Fast Charge Thresold for 1S)
V_{BATLV_FALL}
BATLOWV falling threshold 1 s
V_{BATLV_RISE}
BATLOWV rising threshold
V_{BATLV_RHYST}
BATLOWV hysteresis
INPUT OVER-VOLTAGE COMPARATOR (ACOVP)
V_{ACOV_RISE}
VBUS overvoltage rising
threshold
VBUS rising
V_{ACOV_FALL}
VBUS overvoltage falling
threshold
VBUS falling
V_{ACOV_HYST}
t_{ACOV_RISE_DEG}
VBUS overvoltage hysteresis
VBUS overvoltage rising
deglitch
VBUS rising to stop
converter
t_{ACOV_FALL_DEG}
VBUS overvoltage falling
deglitch
VBUS falling to start
converter
INPUT OVER CURRENT COMPARATOR (ACOC)
V_ACOC
ACP to ACN rising threshold, Voltage across input sense
w.r.t. ILIM2 in
resistor rising, Reg0x31[2] =
REG0x33[15:11]
1
V_{ACOC_FLOOR}
Measure between ACP and
ACN
Set IDPM to minimum
V_{ACOC_CEILING}
Measure between ACP and
ACN
Set IDPM to maximum
t_{ACOC_DEG_RISE}
Rising deglitch time
Deglitch time to trigger
ACOC
t_{ACOC_RELAX}
Relax time
Relax time before converter
starts again
SYSTEM OVER-VOLTAGE COMPARATOR (SYSOVP)
1s
V_{SYSOVP_RISE}
System overvoltage rising
2s
threshold to turn off converter _{3 s}
4s
1s
V_{SYSOVP_FALL}
System overvoltage falling
2s
threshold
3s
4s
I_SYSOVP
Discharge current when
SYSOVP stop switching was on SYS
triggered
BAT OVER-VOLTAGE COMPARATOR (BATOVP)
V_{BATOVP_RISE}
Overvoltage rising threshold 1 s, 4.2 V
as percentage of V_{BAT_REG} in
REG0x15()
2s-4s
V_{BATOVP_FALL}
Overvoltage falling threshold 1 s
as percentage of VBAT_REG
in REG0x15()
2s-4s
V_{BATOVP_HYST}
Overvoltage hysteresis as
percentage of V_{BAT_REG} in
REG0x15()
1s
2s-4s
I_BATOVP
Discharge current during
BATOVP
on SRP and SRN
Copyright © 2017, Texas Instruments Incorporated
bq25700A
SLUSCQ8 – MAY 2017
MIN
TYP
MAX UNIT
2.5%
2.80
V
3.00
V
200
mV
25
26
27 V
24
24.5
25 V
1.5
V
100
µs
1
ms
195%
44
172
4.85
11.7
19
19
210%
50
180
250
250
225%
56 mV
188 mV
µs
ms
5
5.1
12
12.2
V
19.5
20
19.5
20
4.8
11.5
V
19
19
20
mA
102.5%
102.5%
100%
100%
104%
104%
102%
102%
2%
2%
20
106%
105%
104%
103%
mA
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