BQ25700A Datasheet, PDF (8/82 Pages) Texas Instruments – SMBus Multi-Chemistry Battery Buck-Boost Charge Controller With System Power Monitor and Processor Hot Monitor

bq25700A
SLUSCQ8 – MAY 2017
www.ti.com
7.4 Thermal Information
THERMAL METRIC⁽¹⁾
bq25700A
RSN (WQFN)
UNIT
32 PINS
R_θJA
R_θJC(top)
R_θJB
ψ_JT
ψ_JB
R_θJC(bot)
Junction-to-ambient thermal resistance
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance
Junction-to-top characterization parameter
Junction-to-board characterization parameter
Junction-to-case (bottom) thermal resistance
37.2
°C/W
26.1
°C/W
7.8
°C/W
0.3
°C/W
7.8
°C/W
2.3
°C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report.
7.5 Electrical Characteristics
over T_J = –40 to 125°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V_{INPUT_OP}
Input voltage operating range
REGULATION ACCURACY
MAX SYSTEM VOLTAGE REGULATION
V_{SYSMAX_RNG}
System voltage regulation,
measured on V_SYS
REG0x15() = 0x41A0H
(16.800 V)
V_{SYSMAX_ACC}
System voltage regulation
accuracy (charge disable)
REG0x15() = 0x3130H
(12.592 V)
REG0x15() = 0x20D0H
(8.400 V)
MINIMUM SYSTEM VOLTAGE REGULATION
V_{SYSMIN_RNG}
System voltage regulation,
measured on V_SYS
REG0x15() = 0x1060H
(4.192 V)
REG0x3E() = 0x3000H
V_{SYSMIN_REG_ACC}
Minimum system voltage
regulation accuracy (charge
enable, VBAT below
REG0x3E() setting)
REG0x3E() = 0x2400H
REG0x3E() = 0x1800H
CHARGE VOLTAGE REGULATION
V_{BAT_RNG}
Battery voltage regulation
REG0x3E() = 0x0E00H
REG0x15() = 0x41A0H
V_{BAT_REG_ACC}
Battery voltage regulation
accuracy (charge enable)
(0°C to 85°C)
REG0x15() = 0x3130H
REG0x15() = 0x20D0H
REG0x15() = 0x1060H
MIN
TYP
MAX UNIT
3.5
26 V
1.024
–2%
–2%
–3%
–3%
V_SRN + 160 mV
V_SRN + 160 mV
V_SRN + 160 mV
V_SRN + 160 mV
19.2 V
V
2%
V
2%
V
3%
V
3%
1.024
–2%
–2%
–3%
–3%
1.024
–0.5%
–0.5%
–0.6%
–1.1%
12.288
9.216
6.144
3.584
16.8
12.592
8.4
4.192
19.2 V
V
2%
V
2%
V
3%
V
4%
19.2 V
V
0.5%
V
0.5%
V
0.6%
V
1.2%
8
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