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7.24 Internal Oscillators
Typical values stated where T
to 80 V (unless otherwise noted)
PARAMETER
High-frequency Oscillator
f
Operating frequency
HFO
(3)
f
Frequency error
HFO(ERR)
(2)
f
Start-up time
HFO(SU)
Low-frequency Oscillator
f
Operating frequency
LFO
(3)
f
Frequency error
LFO(ERR)
f
Failure detection frequency
LFO(FAIL)
(1)
Operation with V
up to 80 V is supported when the charge pump is not in operation. Whenever the charge pump is in operation (in
BAT
5.5 V or 11 V mode), the maximum voltage on V
their maximum specified voltage.
(2)
Specified by design
(3)
Specified by a combination of design and production test
7.25 High-side NFET Drivers
Typical values stated where T
to 80 V (unless otherwise noted)
PARAMETER
CHG pin voltage with
respect to BAT, DSG
pin voltage with
V
(FETON_HI)
respect to BAT, 8 V ≤
V
≤ 80 V, V
BAT
(2)
V
DSG
CHG pin voltage with
respect to BAT, DSG
pin voltage with
V
(FETON_HI_LOBAT)
respect to BAT, 4.7 V
≤ V
BAT
(2)
V
DSG
CHG pin voltage with
respect to BAT, DSG
pin voltage with
V
(FETON_LO)
respect to BAT, 8 V ≤
V
≤ 80 V, V
BAT
(2)
V
DSG
Copyright © 2021 Texas Instruments Incorporated
= 25°C and V
= 59.2 V, min/max values stated where T
A
BAT
(1)
T
= -40°C to +85°C, includes frequency
A
drift
T
= -40°C to +85°C, at power-up from
A
SHUTDOWN or exiting DEEPSLEEP
mode, oscillator frequency within ±3% of
nominal
T
= -40°C to +85°C, cases other than
A
power-up from SHUTDOWN or exiting
DEEPSLEEP mode, oscillator frequency
within ±3% of nominal
Full-speed setting
Low speed setting
Full-speed setting, T
includes frequency drift
Full-speed setting, T
includes frequency drift
Detects oscillator failure if the LFO
frequency falls below this level.
should be reduced to ensure the voltage on CP1, CHG, and DSG does not exceed
BAT
= 25°C and V
= 59.2 V, min/max values stated where T
A
BAT
(1)
TEST CONDITIONS
CHG/DSG C
L
overdrive setting
≤
LD
CHG/DSG C
L
overdrive setting
< 8 V, V
≤
LD
CHG/DSG C
L
overdrive setting
≤
LD
Product Folder Links:
SLUSE91A – SEPTEMBER 2020 – REVISED FEBRUARY 2021
TEST CONDITIONS
= -10°C to +60°C,
A
= -40°C to +85°C,
A
= 20 nF, charge pump high
= 20 nF, charge pump high
= 20 nF, charge pump low
BQ769142
BQ769142
= -40°C to 85°C and V
A
BAT
MIN
TYP
MAX
16.78
–4.0
±0.25
4.0
4.3
135
262.144
32.768
–1.5
±0.25
1.5
–2.5
±0.25
2.5
8.5
12
18
= -40°C to 85°C and V
A
BAT
MIN
TYP
MAX
10
11
13
8
11
13
4.5
5.7
7
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= 4.7 V
UNIT
MHz
%
ms
µs
kHz
kHz
%
%
kHz
= 4.7 V
UNIT
V
V
V
19
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