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BQ25708 Folha de dados(PDF) 14 Page - Texas Instruments

Nome de Peças BQ25708
Descrição Electrónicos  bq25708 SMBus Multi-Chemistry Battery Buck-Boost Charge Controller With System Power Monitor and Processor Hot Monitor
PDF  77 Pages
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Fabricante Electrônico  TI2 [Texas Instruments]
Página de início  https://www.ti.com
Logo TI2 - Texas Instruments

BQ25708 Folha de dados(HTML) 14 Page - Texas Instruments

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bq25708
SLUSCU2 – NOVEMBER 2017
www.ti.com
Product Folder Links: bq25708
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Copyright © 2017, Texas Instruments Incorporated
Electrical Characteristics (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
INDEPENDENT COMPARATOR
VINDEP_CMP
Independent comparator
threshold
Reg0x30[7] = 1, CMPIN
falling
1.17
1.2
1.23
V
Reg0x30[7] = 0, CMPIN
falling
2.27
2.3
2.33
V
VINDEP_CMP_HYS
Independent comparator
hysteresis
Reg0x06[6] = 0, CMPIN
falling
100
mV
POWER MOSFET DRIVER
PWM OSCILLATOR AND RAMP
FSW
PWM switching frequency
Reg0x00[9] = 0
1020
1200
1380
kHz
Reg0x00[9] = 1
680
800
920
kHz
BATFET GATE DRIVER (BATDRV)
VBATDRV_ON
Gate drive voltage on
BATFET
8.5
10
11.5
V
VBATDRV_DIODE
Drain-source voltage on
BATFET during ideal diode
operation
30
mV
RBATDRV_ON
Measured by sourcing 10-µA
current to BATDRV
3
4
6
kΏ
RBATDRV_OFF
Measured by sinking 10-µA
current from BATDRV
1.2
2.1
kΏ
PWM HIGH SIDE DRIVER (HIDRV Q1)
RDS_HI_ON_Q1
High side driver (HSD) turnon
resistance
VBTST1 – VSW1 = 5 V
6
Ω
RDS_HI_OFF_Q1
High side driver turnoff
resistance
VBTST1 – VSW1 = 5 V
1.3
2.2
Ω
VBTST1_REFRESH
Bootstrap refresh comparator
falling threshold voltage
VBTST1 – VSW1 when low
side refresh pulse is
requested
3.2
3.7
4.6
V
PWM HIGH SIDE DRIVER (HIDRV Q4)
RDS_HI_ON_Q4
High side driver (HSD) turnon
resistance
VBTST2 – VSW2 = 5 V
6
Ω
RDS_HI_OFF_Q4
High side driver turnoff
resistance
VBTST2 – VSW2 = 5 V
1.5
2.4
Ω
VBTST2_REFRESH
Bootstrap refresh comparator
falling threshold voltage
VBTST2 – VSW2 when low
side refresh pulse is
requested
3.3
3.7
4.6
V
PWM LOW SIDE DRIVER (LODRV Q2)
RDS_LO_ON_Q2
Low side driver (LSD) turnon
resistance
VBTST1 – VSW1 = 5.5 V
6
Ω
RDS_LO_OFF_Q2
Low side driver turnoff
resistance
VBTST1 – VSW1 = 5.5 V
1.7
2.6
Ω
PWM LOW SIDE DRIVER (LODRV Q3)
RDS_LO_ON_Q3
Low side driver (LSD) turnon
resistance
VBTST2 – VSW2 = 5.5 V
7.6
Ω
RDS_LO_OFF_Q3
Low side driver turnoff
resistance
VBTST2 – VSW2 = 5.5 V
2.9
4.6
Ω
INTERNAL SOFT START During Charge Enable
SSSTEP_DAC
Soft Start Step Size
64
mA
SSSTEP_DAC
Soft Start Step Time
8
µs



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