BQ40Z60_16 Datasheet, PDF (16/47 Pages) Texas Instruments – Programmable Battery Management Unit

bq40z60
SLUSAW3C – DECEMBER 2014 – REVISED JULY 2015
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8.39 Regulator (REGN)
Typical values stated where T_A = 25°C and VCC = 10.8 V, Min/Max values stated where T_A = –40°C to 85°C and VCC =
2.2 V to 26 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
V_LODRV
Gate drive for low side
charger FET
VCC > 10 V, I_Load = 0 to 60 mA
5.7
6.0
6.3 V
I _SC
V_REGN
V_Hys
Short circuit current limit
Power good indicator
Hysteresis
V_LODRV = 0 V
V_REGN Rising
V_REGN Falling
60
mA
3.6
3.68
3.75 V
240
260
280 mV
8.40 PWM High-Side Driver (HiDRV)
Typical values stated where T_A = 25°C and VCC = 10.8 V, Min/Max values stated where T_A = –40°C to 85°C and VCC =
2.2 V to 26 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
R_ON
R_OFF
V_BOOTSTRAP
Driver turn ON resistance V_BTST – V_PH ≥ 5.5 V
Driver turn OFF resistance VFB < V_OV (Falling)
Bootstrap refresh
comparator
VCC = 4 V to 6 V
VCC > 6 V
6.0
8.6
Ω
2.5
3.3
Ω
2.6
2.9
V
3.9
4.1
V
8.41 PWM Low-Side Driver (LoDRV)
Typical values stated where T_A = 25°C and VCC = 10.8 V, Min/Max values stated where T_A = –40°C to 85°C and VCC =
2.2 V to 26 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
R_ON
R_OFF
Driver turn ON resistance
Driver turn OFF
resistance
V_REGN – V_PGND ≥ 5.5 V
VFB < V_OV (Falling)
5.2
7.6
Ω
1.9
2.4
Ω
8.42 PWM Information
Typical values stated where T_A = 25°C and VCC = 10.8 V, Min/Max values stated where T_A = –40°C to 85°C and VCC =
2.2 V to 26 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
t_DEADTIME
Deadtime between FET
driver output switching
30
ns
Duty cycle
99.5%
f_SW
PWM switching frequency
0.8
1.0
1.1 MHz
8.43 Charger Power-Up Sequence
Typical values stated where T_A = 25°C and VCC = 10.8 V, Min/Max values stated where T_A = –40°C to 85°C and VCC =
2.2 V to 26 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
t_DELAY
t_SS(STEPS)
t_{SS(STEP TIME)}
Power-up sequence
Soft start steps
Soft start time
8
ms
8
2
ms
8.44 Thermal Shutdown Comparator
Typical values stated where T_A = 25°C and VCC = 10.8 V, Min/Max values stated where T_A = –40°C to 85°C and VCC =
2.2 V to 26 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
T_SHUTDOWN
T_Hys
135
145
C
12
C
16
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