BQ25895_16 Datasheet, PDF (8/67 Pages) Texas Instruments – Adjustable Voltage 3.1-A Boost Operation

bq25895
SLUSC88A – MARCH 2015 – REVISED MAY 2016
www.ti.com
Electrical Characteristics (continued)
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
BATTERY CHARGER
V_{BAT(REG_RANG}
E)
V_{BAT(REG_STEP)}
Typical charge voltage range
Typical charge voltage step
V_BAT(REG)
Charge voltage resolution accuracy
I_{(CHG_REG__RAN}
GE)
I_{(CHG_REG_STEP}
)
Typical fast charge current regulation range
Typical fast charge current regulation step
I_{(CHG_REG_ACC)} Fast charge current regulation accuracy
V_BAT(LOWV)
Battery LOWV falling threshold
Battery LOWV rising threshold
V_BAT = 4.208 V
(REG06[7:2]=010111) or
V_BAT = 4.352 V
(REG06[7:2]=100000)
T_J = –40°C to +85°C
3.840
-0.5%
0
V_BAT = 3.1 V or 3.8 V, I_CHG = 128
mA
T_J = –40°C to +85°C
V_BAT= 3.1 V or 3.8 V, I_CHG = 256
mA
T_J = –40°C to +85°C
V_BAT= 3.1 V or 3.8 V, I_CHG=1792
mA
T_J = –40°C to +85°C
Fast charge to precharge,
BATLOWV (REG06[1]) = 1
Precharge to fast charge,
BATLOWV (REG06[1])=1
(Typical 200-mV hysteresis)
-20%
-10%
-5%
2.6
2.8
4.608 V
16
mV
0.5%
5056 mA
64
mA
20%
10%
5%
2.8
2.9 V
3
3.1 V
I_{(PRECHG_RANG}
E)
I_{(PRECHG_STEP)}
I_{(PRECHG_ACC)}
I_{(TERM_RANGE)}
I_{(TERM_STEP)}
Precharge current range
Typical precharge current step
Precharge current accuracy
Termination current range
Typical termination current step
I_{(TERM_ACC)}
Termination current accuracy
V_(SHORT)
V_{(SHORT_HYST)}
I_(SHORT)
Battery short voltage
Battery short voltage hysteresis
Battery short current
V_(RECHG)
Recharge threshold below V_BATREG
64
V_BAT=2.6 V, I_PRECHG = 256 mA
–10%
64
I_TERM = 256 mA, I_CHG<= 1344
mA
T_J = –20°C to +85°C
I_TERM = 256 mA, I_CHG> 1344 mA
T_J = –20°C to +85°C
VBAT falling
VBAT rising
VBAT < 2.2 V
V_BAT falling, VRECHG
(REG06[0]=0) = 0
V_BAT falling, VRECHG
(REG06[0]=0) = 1
–12%
–20%
1024 mA
64
mA
+10%
1024 mA
64
mA
12%
20%
2
V
200
mV
100
mA
100
mV
200
mV
I_BAT(LOAD)
I_SYS(LOAD)
R_ON(BATFET)
Battery discharge load current
System discharge load current
SYS-BAT MOSFET (BATFET) on-resistance
V_BAT = 4.2 V
V_SYS = 4.2 V
T_J = 25°C
T_J = –40°C to +125°C
15
mA
30
mA
11
13 mΩ
11
19 mΩ
8
Submit Documentation Feedback
Product Folder Links: bq25895
Copyright © 2015–2016, Texas Instruments Incorporated