BQ25890H Datasheet, PDF (7/66 Pages) Texas Instruments – I2C Controlled Single Cell 5-A Fast Charger

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BQ25890H
SLUSCC5 – SEPTEMBER 2016
7.4 Thermal Information
THERMAL METRIC⁽¹⁾
BQ25890H
RTW (WQFN)
UNIT
24-PINS
R_θJA
R_θJC((op)
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
31.8
°C/W
27.9
°C/W
8.7
°C/W
0.3
°C/W
8.7
°C/W
2.0
°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
V_{VBUS_UVLOZ} < V_VBUS < V_ACOV and V_VBUS > V_BAT + V_SLEEP, T_J = –40°C to +125°C and T_J = 25°C for typical values (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
QUIESCENT CURRENTS
V_BAT = 4.2 V, V_(VBUS) < V_(UVLO), leakage
between BAT and VBUS
5
µA
High-Z mode, no VBUS, BATFET disabled
I_BAT
Battery discharge current (BAT, SW, SYS) in buck mode
(REG09[5]=1), battery monitor disabled, T_J <
85°C
12
23
µA
High-Z mode, no VBUS, BATFET enabled
(REG09[5]=0), battery monitor disabled, T_J <
85°C
32
60
µA
I_{(VBUS_HIZ)}
Input supply current (VBUS) in buck mode when High-Z mode
is enabled
V_(VBUS)= 5 V, High-Z mode, no battery, battery
monitor disabled
V_(VBUS)= 12 V, High-Z mode, no battery,
battery monitor disabled
15
35
µA
25
50
µA
V_BUS > V_(UVLO), V_BUS > V_BAT, converter not
switching
1.5
3
mA
I_(VBUS)
I_(BOOST)
Input supply current (V_BUS) in buck mode
Battery discharge current in boost mode
V_BUS > V_(UVLO), V_BUS > V_BAT, converter
switching, V_BAT = 3.2 V, I_SYS = 0A
V_BUS > V_(UVLO), V_BUS > V_BAT, converter
switching, V_BAT = 3.8 V, I_SYS = 0 A
V_BAT = 4.2 V, boost mode, I_(VBUS)= 0 A,
converter switching, PFM_OTG_DIS=0
V_BAT = 4.2 V, boost mode, I_(VBUS)= 0 A,
converter switching, PFM_OTG_DIS=1
3
mA
3
mA
3
mA
15
mA
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