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BQ24020 Datasheet, PDF (5/20 Pages) Texas Instruments – SINGLE-CHIP,LI-ION AND LI-POL CHARGER IC WITH AUTONOMOUS USB-PORT AND AC-ADAPTER SUPPLY MANAGEMENT
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www.ti.com
bq24020, bq24022, bq24023
bq24024, bq24025, bq24026
bq24027
SLUS549D – DECEMBER 2002 – REVISED MARCH 2006
ELECTRICAL CHARACTERISTICS (continued)
over 0°C ≤ TJ ≤ 125°C and recommended supply voltage, unless otherwise noted
PARAMETER
TEST CONDITIONS
MIN TYP
MAX
BATTERY RECHARGE THRESHOLD
VRCH
Recharge threshold
VO(REG) VO(REG) VO(REG)
– 0.115 – 0.10 – 0.085
t(DEGL)
Deglitch time for recharge detect
VCC(MIN) ≥ 4.5 V, tFALL = 100 ns decreasing
below or increasing above threshold,
10 mV overdrive
250
375
500
STAT1, STAT2, and PG OUTPUTS
VOL
Low-level output saturation voltage IO = 5 mA
0.25
ISET2, CHARGE ENABLE (CE), TIMER AND TERMINATION ENABLE (TTE), AND TIMER ENABLE (TE) INPUTS
VIL
Low-level input voltage
VIH
High-level input voltage
IIL
CE, TE or TTE low-level
input current
IIL = 10 µA
IIL = 20 µA
0
0.4
1.4
–1
IIH
CE, TE or TTE high-level
input current
1
IIL
IIH
IIH
TIMERS
ISET2 low-level input current
ISET2 high-level input current
ISET2 high-Z input current
IISET2 = 0
IISET2 = VCC
–20
40
1
t(PRECHG) Precharge time
t(TAPER)
Taper time
bq24020
bq24022
bq24023
bq24024
bq24025
1,620
1,620
1,800
1,800
1,930
1,930
t(CHG)
Charge time
bq24020
bq24022
bq24023
bq24024
bq24025
bq24026
bq24027
16,200 18,000 19,300
22,680 25,200 27,720
I(FAULT)
Timer fault recovery current
200
SLEEP COMPARATOR
V(SLP)
Sleep-mode entry
threshold voltage
2.3 V ≤ VI(OUT) ≤ VO(REG)
VCC ≤
VI(OUT)
+80 mV
V(SLPEXIT)
Sleep mode exit
threshold voltage
2.3 V ≤ VI(OUT) ≤ VO(REG)
VCC ≥
VI(OUT)
+190mV
Sleep mode deglitch time
THERMAL SHUTDOWN THRESHOLDS
AC and USB decreasing below threshold,
tFALL = 100 ns, 10 mV overdrive
250
375
500
T(SHTDWN) Thermal trip threshold
165
Thermal hysteresis
15
UNDERVOLTAGE LOCKOUT
V(UVLO)
Undervoltage lockout
Hysteresis
Decreasing VCC
2.4
2.5
2.6
27
UNIT
V
ms
V
V
µA
V
s
µA
V
ms
°C
V
mV
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