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BQ24230 Datasheet, PDF (5/33 Pages) Texas Instruments – USB-FRIENDLY LITHIUM-ION BATTERY CHARGER AND POWER-PATH MANAGEMENT IC
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bq24230
bq24232
www.ti.com .......................................................................................................................................... SLUS821A – OCTOBER 2008 – REVISED DECEMBER 2008
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER
tDGL(RCH)
Deglitch time, recharge threshold
detected
tDGL(NO-IN)
Delay time, input power loss to
charger turnoff
IBAT(DET)
Sink current for battery detection
tDET
Battery detection timer
BATTERY CHARGING TIMERS
tPRECHG
Precharge safety timer value
tMAXCHG
Charge safety timer value
tPRECHG
Precharge safety timer value
tMAXCHG
Charge safety timer value
KTMR
Timer factor
BATTERY-PACK NTC MONITOR(1)
INTC
VHOT
VHYS(HOT)
VCOLD
VHYS(COLD)
tDGL(TS)
NTC bias current
High-temperature trip point
Hysteresis on high trip point
Low-temperature trip point
Hysteresis on low trip point
Deglitch time, pack temperature
fault detection
VDIS(TS)
TS function disable threshold
THERMAL REGULATION
TJ(REG)
Temperature regulation limit
TJ(OFF)
Thermal shutdown temperature
TJ(OFF-HYS)
Thermal shutdown hysteresis
LOGIC LEVELS ON EN1, EN2, CE, TD
VIL
Logic LOW input voltage
VIH
Logic HIGH input voltage
IIL
Input sink current
IIH
Input source current
LOGIC LEVELS ON PGOOD, CHG
VOL
Output LOW voltage
TEST CONDITIONS
VBAT = 3.6 V. Time measured from
VIN: 5 V → 3 V 1-µs fall time
VBAT=2.5 V
BAT high or low
TMR = floating
TMR = floating
18 kΩ < RTMR < 72 kΩ
18 kΩ < RTMR < 72 kΩ
VIN > UVLO and VIN > VBAT+VIN(DT)
Battery charging, VTS Falling
Battery charging, VTS Rising from VHOT
Battery charging, VTS Rising
Battery charging, VTS Falling from VCOLD
Battery charging, VTS Falling
TS unconnected
TJ rising
VIL = 0 V
VIH = 1.4 V
ISINK = 5 mA
MIN
TYP
MAX UNIT
62.5
ms
20
ms
5
7.5
10 mA
250
ms
1440
1800
14400
18000
RTMR × KTMR
10×RTMR ×KTMR
30
40
2160
21600
50
s
s
s
s
s/kΩ
72
270
2000
75
300
30
2100
300
50
VIN-200 mV
125
155
20
78 µA
330 mV
mV
2200 mV
mV
ms
V
°C
°C
°C
0
0.4 V
1.4
6.0 V
1 µA
10 µA
0.4 V
(1) These numbers set trip points of 0°C and 50°C while charging, with 3°C hysteresis on the trip points, with a Vishay Type 2 curve NTC
with an R25 of 10 kΩ.
Copyright © 2008, Texas Instruments Incorporated
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