Datasheet

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bq24020 , , bq24022 , , bq24023
bq24024 , bq24025 , bq24026
bq24027
SLUS549E – DECEMBER 2002 – REVISED NOVEMBER 2007
ELECTRICAL CHARACTERISTICS (continued)
over 0 ° C ≤ T
J
≤ 125 ° C and recommended supply voltage, unless otherwise noted
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
BATTERY RECHARGE THRESHOLD
V
O(REG)
V
O(REG)
V
O(REG)
V
RCH
Recharge threshold V
– 0.115 – 0.10 – 0.085
V
CC(MIN)
≥ 4.5 V, t
FALL
= 100 ns decreasing
t
(DEGL)
Deglitch time for recharge detect below or increasing above threshold, 250 375 500 ms
10 mV overdrive
STAT1, STAT2, and PG OUTPUTS
V
OL
Low-level output saturation voltage I
O
= 5 mA 0.25 V
ISET2, CHARGE ENABLE (CE), TIMER AND TERMINATION ENABLE (TTE), AND TIMER ENABLE (TE) INPUTS
V
IL
Low-level input voltage I
IL
= 10 µ A 0 0.4
V
V
IH
High-level input voltage I
IL
= 20 µ A 1.4
CE, TE or TTE low-level – 1
II
L
input current
CE, TE or TTE high-level 1
II
H
µ A
input current
I
IL
ISET2 low-level input current I
ISET2
= 0 – 20
I
IH
ISET2 high-level input current I
ISET2
= V
CC
40
I
IH
ISET2 high-Z input current 1 V
TIMERS
t
(PRECHG)
Precharge time 1,584 1,800 2,016
bq24020
bq24022
t
(TAPER)
Taper time bq24023 1,584 1,800 2,016
bq24024
bq24025
s
bq24020
bq24022
15,840 18,000 20,160
bq24023
bq24024
t
(CHG)
Charge time
bq24025
bq24026 22,176 25,200 28,224
bq24027
I
(FAULT)
Timer fault recovery current 200 µ A
SLEEP COMPARATOR
V
CC
≤
Sleep-mode entry
V
(SLP)
2.3 V ≤ V
I(OUT)
≤ V
O(REG)
V
I(OUT)
threshold voltage
+80 mV
V
V
CC
≥
Sleep mode exit
V
(SLPEXIT)
2.3 V ≤ V
I(OUT)
≤ V
O(REG)
V
I(OUT)
threshold voltage
+190mV
AC and USB decreasing below threshold,
Sleep mode deglitch time 250 375 500 ms
t
FALL
= 100 ns, 10 mV overdrive
THERMAL SHUTDOWN THRESHOLDS
T
(SHTDWN)
Thermal trip threshold 165
° C
Thermal hysteresis 15
UNDERVOLTAGE LOCKOUT
V
(UVLO)
Undervoltage lockout Decreasing V
CC
2.4 2.5 2.6 V
Hysteresis 27 mV
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