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| BQ25050 Datasheet, PDF (3/28 Pages) Texas Instruments – 1A, Single-Input, Single Cell Li-Ion Battery Charger with 50-mA LDO, External Power Path | |||
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bq25050
www.ti.com
SLUSA33 â MARCH 2010
ELECTRICAL CHARACTERISTICS (continued)
Over junction temperature range 0°C ⤠TJ ⤠125°C and VIN = 5V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
VBATUVLO
VHYS-BUVLO
VIN-SLP
VHYS-INSLP
tDGL(NO-IN)
Battery UVLO
Hysteresis on BAT UVLO
Valid input source threshold VIN-SLP above
VBAT
Hysteresis on VIN-SLP
Deglitch time, input power loss to charger
turn-off
VBAT rising
VBAT falling
Input power good if VIN > VBAT + VINâSLP
VBAT = 3.6V, VIN: 3.5V â 4V
VBAT = 3.6V, VIN: 4V â 3.5V
Time measured from VIN: 5V â 2.5V 1µs
fall-time
1.95
30
VOVP
VHYS-OVP
tDGL(OVP)
tREC(OVP)
Input over-voltage protection threshold
Hysteresis on OVP
Input over-voltage deglitch time
Input over-voltage recovery time
VIN_DPM
Input DPM threshold
QUIESCENT CURRENT
VIN: 5 V â 11 V
VIN: 11 V â 5 V
Time measured from VIN: 11V â 5V 1µs
fall-time to LDO = HI, VBAT = 3.5V
VIN Falling, VIN-DPM enabled with CTRL
10.2
4.2
IBAT(PDWN)
Battery current into BAT, No input
connected
VIN = 0V, VCHG = High, TS Enabled
VIN = 0V, VCHG = Low, TS Disabled, TJ =
85°C
IBAT(DONE)
IIN(STDBY)
BAT current, charging terminated
Standby current into IN pin
ICC
Active supply current, IN pin
BATTERY CHARGER FAST-CHARGE
VIN = 6V, VBAT > VBAT(REG)
CTRL = HI, VIN < VOVP
CTRL = HI, VIN ⥠VOVP
VIN = 6V, no load on OUT pin, VBAT >
VBAT(REG), IC enabled
VBAT(REG)
IIN(LIM)
Battery charge regulation voltage
Input current limit (selected by CTRL
interface)
TA = 0°C to 125°C, IOUT = 50 mA
TA = 25°C
4 pulses on CTRL
5 pulses on CTRL
4.16
4.179
87
174
6 pulses on CTRL
261
7 pulses on CTRL
348
8 pulses on CTRL
435
9 pulses on CTRL
608
10 pulses on CTRL
739
11 pulses on CTRL
864
VDO(IN-OUT)
KIMON
VIN â VOUT
Input current monitor ratio
VIN = 4.2V, IOUT = 0.75 A
KIMON = IIMON / ICHG, RIMON = 1kΩ,
Current programmed using CTRL
VIMON(MAX)
Maximum IMON voltage
IMON Accuracy
PRE-CHARGE AND CHARGE DONE
IMON open
25 mA < IIN < 100 mA
IIN = 100 mA to 1 A
â25%
â8.5%
VLOWV
Pre-charge to fast-charge transition
External power path control disabled,
2.4
threshold
BGATE = VSS
External power path control enabled
2.8
tDGL1(LOWV)
Deglitch time on pre-charge to fast-charge
transition
tDGL2(LOWV)
Deglitch time on fast-charge to pre-charge
transition
IPRECHARGE
Precharge current to BAT during precharge
mode
ITERM
Default termination current threshold
RECHARGE OR REFRESH
VBAT = 0V to 2.9V, Battery FET connected
VBAT = 0V to 2.5V, BGATE = VSS, Input
current limit regulated to IPRECHARGE
VIN = 5V, ICHARGE = 100 mA to 1 A
28
41.5
7.5
VRCH
Recharge detection threshold
VBAT falling
VBAT(REG)
â0.13V
TYP
2.05
125
75
32
32
10.5
100
100
100
4.30
120
4.20
4.200
93
187
280
374
467
654
794
935
500
1
1.2
2.5
2.9
25
25
37
45
10.5
VBAT(REG)
â0.1V
MAX
2.15
150
UNITS
V
mV
mV
mV
ms
10.8
V
mV
µs
µs
4.4
V
150 µA
6 µA
10 µA
0.5 mA
2
3 mA
4.23
4.221
100
200
300
400
500
700
850
1000
900
V
mA
mV
mA/A
1.25
V
25%
5%
2.6
V
3.0
ms
ms
45 mA
48.5
13.5 %ICHG
VBAT(REG)
V
â0.065V
Copyright © 2010, Texas Instruments Incorporated
Product Folder Link(s): bq25050
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