SLUS549D – DECEMBER 2002 – REVISED MARCH 2006
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ELECTRICAL CHARACTERISTICS (continued)
over 0°C
≤
T
J
≤
125°C and recommended supply voltage, unless otherwise noted
PARAMETER
Precharge to fast-charge
transition threshold
Deglitch time for fast-charge to
precharge transition
I
O(PRECHG)
V
(PRECHG)
Precharge range
(2)
Precharge set voltage
TEST CONDITIONS
Voltage on OUT pin
V
CC(MIN)
≥
4.5 V, t
FALL
= 100 ns, 10 mV
overdrive, V
I(OUT)
decreasing below threshold
0 V < V
I(OUT)
< V
(LOWV)
, t < t
(PRECHG)
Voltage on ISET1 pin
0 V < V
I(OUT)
> V
(LOWV)
,
V
I(OUT)
> V
(RCH)
, t < t
(TAPER)
V
I(OUT)
> V
(RCH)
, ISET2 = Low
V
I(OUT)
> V
(RCH)
, ISET2 = High
Voltage on ISET1 pin, V
O(REG)
= 4.2 V,
V
I(OUT)
> V
(RCH)
, t < t
(TAPER)
Voltage on ISET1 pin, V
O(REG)
= 4.2 V,
V
I(OUT)
> V
(RCH)
V
CC(MIN)
≥
4.5 V, t
FALL
= 100 ns charging
current increasing or decreasing above and
below, 10 mV overdrive
V
CC(MIN)
≥
4.5 V, t
FALL
= 100 ns charging
current decreasing below, 10 mV overdrive
PTC thermistor
PTC thermistor
V
O(REG)
= 4.2 V
t < t
(PRECHG)
MIN
2.8
250
5
240
255
TYP
3.0
375
MAX
3.2
500
100
270
UNIT
PRECHARGE AND SHORT-CIRCUIT CURRENT REGULATION
V
(LOWV)
V
ms
mA
mV
CHARGE TAPER AND TERMINATION DETECTION
I
(TAPER)
Charge taper detection range
(3)
USB-100 charge taper
detection level
USB-500 charge taper
detection level
V
(TAPER)
V
(TERM)
t
(TPRDET)
t
(TRMDET)
bq24026
bq24026
5
6.5
32
235
11
250
9
44
250
18
375
100
11
mA
55
265
25
500
ms
250
375
500
mV
Charge taper detection set voltage
Charge termination detection
set voltage
(4)
Deglitch time for TAPER detection
Deglitch time for
termination detection
High-voltage threshold
Low-voltage threshold
Current source
Deglitch time for temperature fault
TEMPERATURE SENSE COMPARATOR
V
(HTF)
V
(LTF)
I
(TS)
t
(DEGL)
2.475
0.485
96
250
2.500
0.500
102
375
2.525
0.515
108
500
V
µA
ms
(2)
I
O(PRECHG)
+
K
(SET)
V
(PRECHG)
R
SET
(3)
I
O(TAPER)
+
K
(SET)
V
(TAPER)
R
SET
(4)
I
O(TERM)
+
K
(SET)
V
(TERM)
R
SET
4
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