www.ti.com
bq24020, bq24022,
bq24023, bq24024
bq24025, bq24026
SLUS549C − DECEMBER 2002 − REVISED AUGUST 2004
ELECTRICAL CHARACTERISTICS
over 0_C
≤
TJ
≤
125_C and recommended supply voltage, unless otherwise noted
PARAMETER
INPUT CURRENT
VCC current, ICC(VCC)
Sleep current, ICC(SLP)
Standby current, ICC(STBY)
Input current on OUT pin, IIB(OUT)
Input current on CE pin, IIB(CE)
Input bias current on TTE pin, IIB(TTE)
Input bias current on TE pin, IIB(TE)
VOLTAGE REGULATION
VO(REG) + V(DO−MAX)
≤
VCC , I(TERM) < IO(OUT)
≤
1 A
Output voltage, VO(REG)
Voltage regulation accuracy
AC dropout voltage (V(AC)−V(OUT)), V(DO)
TA = 25_C
VO(OUT) = VO(REG),
VO(REG) + V(DO−MAX))
≤
VCC,
VO(OUT) = VO(REG)
VO(REG) + V(DO−MAX))
≤
VCC,
VO(OUT) = VO(REG)
VO(REG) + V(DO−MAX))
≤
VCC,
IO(OUT) = 1A
ISET2 = High
ISET2 = Low
−0.35%
−1%
350
350
60
4.20
0.35%
1%
500
500
100
mV
V
VCC > VCC(min)
Sum of currents into OUT pin,
VCC < V(SLP)
CE = High,
0_C
≤T
J
≤
85_C
Charge DONE,
VCC > VCC(MIN)
1.2
2
2.0
5
150
1
5
1
1
1
µA
mA
TEST CONDITIONS
MIN
TYP
MAX
UNIT
USB dropout voltage (V(USB) − V(OUT)),
V(DO)
CURRENT REGULATION
AC output current range, IO(OUT)(1)
VI(OUT) >V(LOWV), VI(AC) −VI(OUT) >V(DO−MAX),
VCC
≥
4.5 V,
VCC(MIN)
≥
4.5 V,
VI(OUT) > V(LOWV),
VUSB − VI(OUT) > V(DO−MAX),
ISET2 = Low
VCC(MIN)
≥
4.5 V,
VI(OUT) > V(LOWV),
VUSB − VI(OUT) > V(DO−MAX),
ISET2 = High
Voltage on ISET1 pin, VCC
≥
4.5 V, VIN
≥
4.5 V,
VI(OUT) > V(LOWV), VIN − VI(OUT) > V(DO−MAX)
50 mA
≤
IO(OUT)
≤
1 A
10 mA
≤
IO(OUT) < 50 mA
1 mA
≤
IO(OUT) < 10 mA
50
80
400
2.463
307
296
246
2.500
322
320
320
1000
100
500
2.538
337
346
416
V
mA
USB output current range, IO(OUT)
Output current set voltage, V(SET)
Output current set factor, K(SET)
PRECHARGE AND SHORT-CIRCUIT CURRENT REGULATION
Precharge to fast-charge transition
threshold, V(LOWV)
Deglitch time for fast-charge to precharge
transition
Precharge range, IO(PRECHG)(2)
Precharge set voltage, V(PRECHG)
(1)
I
O(OUT)
+
(2)
I
O(PRECHG)
+
K
(SET)
V
(SET)
Voltage on OUT pin
VCC(MIN)
≥
4.5 V, tFALL = 100 ns, 10 mV overdrive
VI(OUT) decreasing below threshold
0 V < VI(OUT) < V(LOWV), t < t(PRECHG)
Voltage on ISET1 pin,
VO(REG) = 4.2 V,
0 V < VI(OUT) > V(LOWV),
t < t(PRECHG)
2.8
250
5
240
255
3.0
375
3.2
500
100
270
V
ms
mA
mV
R
SET
K
(SET)
V
(PRECHG)
R
SET
3
TI [ TEXAS INSTRUMENTS ]
