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BQ76952
SLUSE13A – JANUARY 2020 – REVISED MAY 2021
Typical values stated where T
to 80 V (unless otherwise noted)
PARAMETER
t
Device Response Time
RSPS
t
Host Turn Around Time
TRND
t
HDQ Line Rising Time to Logic 1
RISE
(2)
t
HDQ Bus Reset
RST
(3)
R
Pullup Resistor
PULLUP
(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 characterization
(4)
Response time will vary depending on the internal device processing
7.30 Timing Requirements - SPI Interface
Typical values stated where T
to 80 V (unless otherwise noted). All values specified with SPI pin filtering enabled.
(2)
t
SPI clock period
SCK
(2)
t
Enable lead-time
LEAD
(2)
t
Enable lag time
LAG
t
Sequential transfer delay
TD
(2) (6)
t
Data setup time
SU
t
Data hold time (inputs)
HI
t
Data hold time (outputs)
HO
t
Responder access time
A
t
Responder DOUT disable time
DIS
(2)
t
Data valid
V
(2)
t
Rise time
R
(2)
t
Fall time
F
(2)
t
SPI bus reset
RST
(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)
See later discussion in datasheet for more details
(4)
Specified by characterization
24
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= 25°C and V
= 59.2 V, min/max values stated where T
A
BAT
(1)
(2) (4)
Device drives HDQ
(2)
Host drives HDQ after device drives HDQ
(2)
Host holds bus low to initiate device
interface reset
Pullup voltage rail ≤ 5 V
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
PARAMETER
(3)
(2) (6)
(2)
(2)
(2)
should be reduced to ensure the voltage on CP1, CHG, and DSG does not exceed
BAT
Product Folder Links:
TEST CONDITIONS
(1)
TEST
CONDITI
ONS
Up to
25pF load
Up to
25pF load
Bus
interface
is reset if
SPI_CS is
low and
SPI_SCL
K is
detected
unchange
d for this
duration
BQ76952
www.ti.com
= -40°C to 85°C and V
A
BAT
MIN
TYP
MAX
190
210
1.8
1.9
2.1
1.5
= -40°C to 85°C and V
A
BAT
MIN
TYP
MAX
(5)
500
625
50
50
50
50
0
500
450
(5)
235
30
30
1.9
2.1
Copyright © 2021 Texas Instruments Incorporated
= 4.7 V
UNIT
µs
µs
µs
s
kΩ
= 4.7 V
UNIT
ns
ns
ns
µs
ns
ns
ns
ns
ns
ns
ns
ns
s
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