BQ24250C_15 Datasheet, PDF (7/46 Pages) Texas Instruments – bq24250C 2A Single Input I2C, Standalone Switch-Mode Li-Ion Battery Charger with Power-Path Management

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bq24250C
SLUSBY7 – JULY 2014
Electrical Characteristics (continued)
V_UVLO < V_IN < V_OVP and V_IN > V_BAT+V_SLP, T_J = 0ºC-125°C and T_J = 25°C for typical values (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
POWER-PATH MANAGEMENT
MINSYS stage (no DPM or DPPM)
–1%
3.52
1%
V_SYSREG
System Regulation Voltage
MINSYS stage (DPM or DPPM active)
BATREG stage
SYSREG stage
–1.50%
V_BATREG
+2.1%
V_MINSYS
–200mV
V_BAT
+ I_CHG R_on
V_BATREG
+3.1%
1.50%
V_BATREG
+4.1%
V_SPLM
Enter supplement mode voltage
threshold
V_BAT = 3.6V
V_BAT –
40mV
I_SPLM
Exit supplement mode current
threshold
V_BAT = 3.6V
20
BATTERY CHARGER
R_ON(BAT-SYS)
V_BATREG
I_CHG
I_CHG-LOW
K_ISET
Internal battery charger MOSFET
on-resistance
I²C host mode
SA mode or I²C default mode
Voltage Regulation Accuracy
Fast Charge Current Range
Fast Charge Current Accuracy
Low Charge Current Setting
Programmable Fast Charge
Current Factor
Measured from BAT to SYS,
V_BAT = 4.2V (WCSP)
Operating in voltage regulation,
Programmable Range
T_J = 25°C
T_J = 0°C to 125°C
V_LOWV ≤ V_BAT < V_BAT(REG)
I²C mode
Set via I²C
I_CHG
=
K_ISET
R_ISET
3.5
–0.5%
–0.75%
500
–7%
297
232.5
20
30
4.44
4.2
0.5%
0.75%
2000
7%
330
363
250
267.5
V_ISET
Maximum ISET pin voltage (in
regulation)
0.39
0.42
0.45
R_ISET-SHORT
V_LOWV
I_PRECHG
V_{BAT_UVLO}
Short circuit resistance threshold
Pre-charge to fast charge
threshold
Rising
Hysteresis for V_LOWV
Battery voltage falling
Pr-charge current (V_BATUVLO < V_BAT Ipre-chg is a precentile of the external fast
< V_LOWV)
charge settings.
Battery Under voltage lockout
threshold
V_BAT rising
40
55
75
2.9
3
3.1
100
8%
10
12%
2.39
2.52
2.65
Battery UVLO hysteresis
200
V_BATSHRT
Trickle charge to pre-charge
threshold
1.9
2
2.1
Hysteresis for VBATSHRT
Battery voltage falling
100
I_BATSHRT
I_TERM
Trickle charge mode charge
current (V_BAT < V_BATSHRT)
Termination Current Threshold
Termination Current Threshold
Tolerance
Termination current on SA only
25
–10%
35
50
10
10%
V_RCH
Recharge threshold voltage
Below V_BATREG
70
115
160
UNIT
V
V
mA
mΩ
V
mA
mA
AΩ
V
Ω
V
mV
V
mV
V
mV
mA
%ICHG
mV
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