Texas Instruments BQ25120A, Manual

Page: 8 / 73

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°C to 85°C and T
J
= 25°C for typical values
(unless otherwise noted)
PARAMETERS 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)
< 4.65 V
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%
K
(ILIM)
Maximum input current
factor
I
(ILIM)
= 50 mA to 100 mA 175 200 225 AΩ
I
(ILIM)
= 100 mA to 400 mA 190 200 210 AΩ
V
IN(DPM)
Input voltage threshold
when input current is
reduced
Programmable Range using V
IN(DPM)
Registers. Can be
disabled using V
IN(DPM_ON)
4.2 4.9 V
V
IN_DPM
threshold
accuracy
–3% 3%
BATTERY CHARGER
V
(DPPM)
PMID voltage threshold
when charge current is
reduced
Above V
(BATREG)
0.2 V
R
ON(BAT-PMID)
Internal Battery Charger
MOSFET on-resistance
Measured from BAT to PMID, V
(BAT)
= 4.35 V, High-Z mode 300 400 mΩ
V
(BATREG)
Charge Voltage
Operating in voltage regulation, Programmable Range, 10-
mV steps
3.6 4.65 V
Voltage Regulation
Accuracy
T
J
= 0°C to 85°C –0.5% 0.5%
BQ25121A
SLUSDA7A – APRIL 2018 – REVISED JANUARY 2021
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