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6.10 Thermistor Pullup Resistor
Typical values stated where T
to 38.5 V (unless otherwise noted)
PARAMETER
Internal pullup
R
(TS_PU)
resistance at 25°C
Internal pullup
resistance change
R
(TS_PU_DRIFT)
over temperature
(2)
Internal pullup
resistance change
R
(TS_PU_DRIFT)
over temperature
(2)
(1)
The internal pullup resistance includes only the resistance between the REG18 internal LDO and the point where the voltage is sensed
by the protection subsystem.
(2)
Specified by characterization
6.11 Hardware Overtemperature Detector
Typical values stated where T
to 38.5 V (unless otherwise noted)
PARAMETER
Hardware overtemperature detector
V
(OTSD)
(1)
threshold
(1)
Specified by design
6.12 Internal Oscillator
Typical values stated where T
to 38.5 V (unless otherwise noted)
PARAMETER
Low-frequency Oscillator
f
Operating frequency
LFO
f
LFOS(ERR
(1)
Frequency drift
)
f
LFOS(ERR
(1)
Frequency drift
)
f
Failure detection frequency
LFO(FAIL)
(1)
Specified by characterization
6.13 Charge and Discharge FET Drivers
Typical values stated where T
to 38.5 V (unless otherwise noted)
PARAMETER
V
DSG driver enabled
(FETON_DSG)
V
CHG driver enabled
(FETON_CHG)
V
DSG driver enabled
(FETON_LOBAT_DSG)
V
CHG driver enabled
(FETON_LOBAT_CHG)
CHG FET driver rise
t
(CHG_ON)
time
Copyright © 2023 Texas Instruments Incorporated
= 25°C and V
= 25.9 V, min/max values stated where T
A
BAT
TEST CONDITIONS
(1)
Change over -20°C/+65°C vs value at 25°C
(1)
for nominal 20-kΩ
Change over -40°C/+110°C vs value at 25°C
(1)
for nominal 20-kΩ
= 25°C and V
= 25.9 V, min/max values stated where T
A
BAT
= 25°C and V
= 25.9 V, min/max values stated where T
A
BAT
Change in frequency vs value at 25°C, T
= –20°C to +65°C.
Change in frequency vs value at 25°C, T
= –40°C to +110°C.
Detects oscillator failure if the frequency
falls below this level.
= 25°C and V
= 25.9 V, min/max values stated where T
A
BAT
TEST CONDITIONS
V
≥ 12 V, C
REGSRC
V
≥ 12 V, C
REGSRC
V
< 12 V, C
REGSRC
V
< 12 V, C
REGSRC
CHG C
= 20 nF, R
L
12 V, 0.5 V to 5 V
Product Folder Links:
TEST CONDITIONS
TEST CONDITIONS
A
A
= 20 nF
L
= 20 nF
L
= 20 nF
L
= 20 nF
L
= 100 Ω, V
=
GATE
REGSRC
BQ77307
SLUSF60 – DECEMBER 2023
= -40°C to 110°C and V
A
MIN
TYP
MAX
19.75
20
20.25
–36
–53
= -40°C to 110°C and V
A
MIN
TYP
MAX
118
132
= -40°C to 110°C and V
A
MIN
TYP
MAX
32.770
–1.0%
±0.33%
1.0%
–1.6%
±0.67%
1.9%
11
14.1
= -40°C to 110°C and V
A
MIN
TYP
MAX
10.5
11.5
10
11
V
REGSRC
V
REGSRC
– 1.0
V
REGSRC
V
REGSRC
– 1.75
50
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BQ77307
= 3 V
BAT
UNIT
kΩ
28
Ω
98
Ω
= 3 V
BAT
UNIT
°C
= 3 V
BAT
UNIT
kHz
18
kHz
= 3 V
BAT
UNIT
13
V
12
V
V
V
85
µs
11
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