Texas Instruments BQ25123, Manual

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8.4 Thermal Information
THERMAL METRIC
(1)
BQ25123
UNIT YFP (DSBGA)
25 PINS
R
θJA
Junction-to-ambient thermal resistance 60 °C/W
R
θJC(top)
Junction-to-case (top) thermal resistance 0.3 °C/W
R
θJB
Junction-to-board thermal resistance 12 °C/W
ψ
JT
Junction-to-top characterization parameter 1.2 °C/W
ψ
JB
Junction-to-board characterization parameter 12 °C/W
R
θJC(bot)
Junction-to-case (bottom) thermal resistance N/A °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report.
8.5 Electrical Characteristics
Circuit of Figure 8-1 , V
(UVLO)
< V
IN
< V
(OVP)
and V
IN
> V
(BAT)
+ V
(SLP)
, T
J
= –40 to +85°C and T
J
= 25°C for typical values
(unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT CURRENTS
I
IN
Supply current for control
V
(UVLO)
< V
IN
< V
(OVP)
and V
IN
> V
(BAT)
+ V
(SLP)
PWM Switching,
–40°C < T
J
< 85°C
1 mA
V
(UVLO)
< V
IN
< V
(OVP)
and V
IN
> V
(BAT)
+ V
(SLP)
PWM NOT
Switching
3 mA
0°C < T
J
< 85°C, V
IN
= 5 V, Charge Disabled 1.5 mA
I
(BAT_HIZ)
Battery discharge current
in High Impedance Mode
0°C < T
J
< 60°C, V
IN
= 0 V, High-Z Mode, PWM Not Switching,
V
(BUVLO)
< V
(BAT)
< 4.65V
0.7 1.2 µA
0°C < T
J
< 60°C, V
IN
= 0 V, High-Z Mode, PWM Not Switching,
V
(BUVLO)
< V
(BAT)
< 6.6 V
0.9 1.5 µA
0°C < T
J
< 60°C, V
IN
= 0 V or floating, High-Z Mode, PWM
Switching, No Load
0.75 3.5 µA
0°C < T
J
< 85°C, V
IN
= 0 V, High-Z Mode, PWM Switching,
LSLDO enabled
1.35 4.25 µA
I
(BAT_ACTIVE)
Battery discharge current
in Active Battery Mode
0°C < T
J
< 85°C, V
IN
= 0 V, Active Battery Mode, PWM
Switching, LSLDO enabled, I2C Enabled, V
(BUVLO)
< V
(BAT)
<
4.65 V
6.8 12 µA
0°C < T
J
< 85°C, 0 < V
IN
< V
IN(UVLO)
, Active Battery Mode, PWM
Switching, LSLDO disabled, I2C Enabled, /CD = Low, V
(BUVLO)
<
V
(BAT)
< 4.65 V
6.2 11 µA
I
(BAT_SHIP)
Battery discharge current
in Ship Mode
0°C < T
J
< 85°C, V
IN
= 0 V, Ship Mode 2 150 nA
POWER-PATH MANAGEMENT and INPUT CURRENT LIMIT
V
DO(IN-PMID)
V
IN
– V
(PMID)
V
IN
= 5 V, I
IN
= 300 mA 125 170 mV
V
DO(BAT-
PMID)
V
(BAT)
– V
(PMID)
V
IN
= 0 V, V
(BAT)
> 3 V, I
ff
= 400 mA 120 160 mV
V
(BSUP1)
Enter supplement mode
threshold
V
(BAT)
> V
(BUVLO)
V
(PMID)
<
V
(BAT)
– 25
mV
V
V
(BSUP2)
Exit supplement mode
threshold
V
(BAT)
> V
(BUVLO)
V
(PMID)
<
V
(BAT)
–
5mV
V
I
(BAT_OCP)
Current limit, Discharge
Mode
V
(BAT)
> V
(BUVLO)
0.85 1.15 1.35 A
I
(ILIM)
Input current limit Programmable Range, 50-mA steps 50 400 mA
Maximum Input current
using ILIM K
(ILIM)
/
R
(ILIM)
I
ILIM
accuracy I
ILIM
accuracy
50 mA to 100 mA –12% 12%
100 mA to 400 mA –5% 5%
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BQ25123
SLUSCZ6A – JANUARY 2018 – REVISED MAY 2021
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