BQ24250C_15 Datasheet, PDF (8/46 Pages) Texas Instruments – bq24250C 2A Single Input I2C, Standalone Switch-Mode Li-Ion Battery Charger with Power-Path Management

bq24250C
SLUSBY7 – JULY 2014
www.ti.com
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
BATTERY DETECTION
V_{BATREG_HI}
Battery Detection High Regulation
Voltage
Same as V_BATREG
V_BATREG
V_{BATREG_LO}
Battery Detection Low Regulation
Voltage
360 mV offset from V_BATREG
V_BATREG
–480mV
V_{BATDET Hi}
Battery detection comparator
V_BATREG = VBATREG_HI
V_BATREG
–120mV
V_{BATDET LO}
Battery detection comparator
V_BATREG = V_{BATREG_LO}
V_BATREG
+120mV
I_DETECT
Tsafe
Battery Detection Current Sink
Safety Timer Accuracy
Always on during battery detection
–10%
7.5
+10%
INPUT PROTECTION
I_{IN_LIMIT} = 100 mA
I_{IN_LIMIT} = 150 mA
I_{IN_LIMIT} = 500 mA
I_{IN_LIMIT} = 900 mA
I_IN
Input current limiting
I_{IN_LIMIT} = 1500 mA
I_{IN_LIMIT} = 2000 mA
I_{IN_LIMIT} = External
90
95
135
142.5
450
475
810
860
1400
1475
1850
1950
I_LIM
=
K_ILIM
R_ILIM
100
150
500
910
1550
2050
I_LIM
Maximum input current limit
programmable range for IN input
500
2000
K_ILIM
Maximum input current factor for
IN input
I_LIM = 500 mA to 2.0 A
240
270
300
V_ILIM
Maximum ILIM pin voltage (in
regulation)
0.42
R_ILIM-SHORT
Short circuit resistance threshold
V_{IN_DPM} threshold range
SA mode
I²C mode
55
83
105
4.2
10
4.2
4.76
V_{IN_DPM}
V_{IN_DPM} threshold for USB Input in
SA mode
USB100, USB150, USB500, USB900,
current limit selected. Also I²C register
default.
4.27
4.36
4.45
V_{IN_DPM} threshold with adaptor
current limit and VDPM shorted to
GND
Must set to external resistor settings via the
EN1/EN2 pins or the I²C register interface.
V_{IN_DPM}
–2%
V_{IN_DPM}
V_{IN_DPM}
+2%
V_{IN_DPM} threshold Accuracy
Both I²C and SA mode
–2%
2%
V_{REF_DPM}
V_{DPM_SHRT}
DPM regulation voltage
VIN_DPM short threshold
External resistor setting only
If VDPM is shorted to ground, V_{IN_DPM}
threshold will use internal default value
1.15
1.2
1.25
0.3
V_UVLO
V_SLP
V_OVP
V_BOVP
IC active threshold voltage
IC active hysteresis
Sleep-mode entry threshold,
V_IN-VBAT
Sleep-mode exit hysteresis,
V_IN-VBAT
Input supply OVP threshold
voltage
VOVP hysteresis
Battery OVP threshold voltage
VBOVP hysteresis
V_IN rising
V_IN falling from above V_UVLO
2.0 V ≤ V_BAT ≤ V_BATREG, V_IN falling
3.15
3.35
3.5
175
0
50
100
2.0 V ≤ V_BAT ≤ V_BATREG
IN rising
IN falling from V_OVP
V_BAT threshold over V_BATREG to turn off
charger during charge
Lower limit for V_BAT falling from above V_BOVP
40
Input OVP
–200mV
102.5
100
Input OVP
100
105
1
160
Input OVP
+200mV
107.5
UNIT
V
V
V
V
mA
mA
mA
AΩ
V
Ω
V
V
V
V
mV
mV
mV
V
mV
% V_BATREG
% V_BATREG
8
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