Texas Instruments BQ769142, Manual

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Typical values stated where T
A
= 25°C and V
BAT
= 59.2 V, min/max values stated where T
A
= -40°C to 85°C and V
BAT
= 4.7 V
to 80 V (unless otherwise noted)
(1)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
CELL(ACC)
Cell voltage measurement
accuracy
(5)
2 V < V
VC(x)
- V
VC(x-1)
< 5 V, T
A
= 0°C
to 60°C, 1 ≤ x ≤ 14
(2)
–10 10 mV
V
CELL(ACC)
Cell voltage measurement
accuracy
(5)
–0.2 V < V
VC(x)
- V
VC(x-1)
< 5.5 V, T
A
= -40°C to 85°C, 1 ≤ x ≤ 14
(2)
–15 15 mV
V
STACK(ACC)
Stack voltage (VC14 - VSS)
measurement accuracy
(5)
0 V < V
VC14
- V
VSS
< 80 V, T
A
=
-40°C to 85°C
(2)
–0.5 0.5 V
V
PACK(ACC)
PACK pin voltage measurement
accuracy
(5)
0 V < V
PACK
< 80 V, T
A
= -40°C to
85°C
(2)
–0.5 0.5 V
V
LD(ACC)
LD pin voltage measurement
accuracy
(5)
0 V < V
LD
< 80 V, T
A
= -40°C to
85°C
(2)
–0.5 0.5 V
(1) Operation with VBAT up to 80 V is supported when the charge pump is not in operation. Whenever the charge pump is in operation (in
5.5 V or 11 V mode), the maximum voltage on VBAT should be reduced to ensure the voltage on CP1, CHG, and DSG does not
exceed their maximum specified voltage.
(2) Cell voltage accuracy is specified after completion of board offset calibration
(3) Specified by design
(4) Voltage on VC0 can extend higher (limited by absolute maximum specification) during cell balancing.
(5) Specified by characterization
(6) Values may need to be optimized during system design and evaluation for best performance
7.4 Thermal Information bq769142
THERMAL METRIC
(1)
BQ769142
UNIT PFB (TQFP)
48 PINS
R
θJA
Junction-to-ambient thermal resistance 66.0 °C/W
R
θJC(top)
Junction-to-case (top) thermal resistance 19.6 °C/W
R
θJB
Junction-to-board thermal resistance 29.3 °C/W
Ψ
JT
Junction-to-top characterization parameter 0.8 °C/W
Ψ
JB
Junction-to-board characterization parameter 29.1 °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report.
7.5 Supply Current
Typical values stated where T
A
= 25°C and V
BAT
= 59.2 V, min/max values stated where T
A
= -40°C to 85°C and V
BAT
= 4.7 V
to 80 V (unless otherwise noted)
(1)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
I
NORMAL
Normal Mode
Regular measurements and protections active,
REG1 = 3.3 V with no load, REG2 = OFF, CHG
= ON in 11V overdrive mode, DSG = ON in 11V
overdrive mode,
Settings:Configuration:Power
Config[FASTADC] = 0, no communication
286 µA
I
SLEEP_1
SLEEP Mode
Periodic protections and monitoring, no pack
current, REG1 = OFF, REG2 = OFF, CHG =
OFF, DSG = ON in 11V overdrive mode, no
communication,
Power:Sleep:Voltage Time = 5
s
41 µA
I
SLEEP_2
SLEEP Mode
Periodic protections and monitoring, no pack
current, REG1 = OFF, REG2 = OFF, CHG =
OFF, DSG = source follower mode, no
communication,
Power:Sleep:Voltage Time = 5
s
24 µA
BQ769142
SLUSE91A – SEPTEMBER 2020 – REVISED FEBRUARY 2021
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