Datasheet

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RECOMMENDED OPERATING CONDITIONS
ELECTRICAL CHARACTERISTICS
(1)
I
O(OUT)
+
ǒ
K
(SET)
V
(SET)
Ǔ
R
SET
bq24020 , , bq24022 , , bq24023
bq24024 , bq24025 , bq24026
bq24027
SLUS549E – DECEMBER 2002 – REVISED NOVEMBER 2007
over operating free-air temperature range (unless otherwise noted)
MIN NOM MAX UNIT
Supply voltage (from AC input), V
CC
4.5 6.5 V
Supply voltage (from USB input), V
CC
4.35 6.5 V
Operating junction temperature range, T
J
– 40 125 ° C
over 0 ° C ≤ T
J
≤ 125 ° C and recommended supply voltage, unless otherwise noted
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT CURRENT
I
CC
(V
CC
) V
CC
current V
CC
> V
CC(min)
1.2 2.0 mA
I
CC(SLP)
Sleep current Sum of currents into OUT pin, V
CC
< V
(SLP)
2 5
I
CC(STBY)
Standby current CE = High 0 ° C ≤ T
J
≤ 85 ° C 1 150
II
B(OUT)
Input current on OUT pin Charge DONE V
CC
> V
CC(MIN)
5
µ A
II
B(CE)
Input current on CE pin 1
II
B(TTE)
Input bias current on TTE pin 1
II
B(TE)
Input bias current on TE pin 1
VOLTAGE REGULATION V
O(REG)
+ V
(DO-MAX)
≤ V
CC
, I
(TERM)
< I
O(OUT)
≤ 1 A
V
O(REG)
Output voltage, 4.20 V
T
A
= 25 ° C – 0.35% 0.35%
Voltage regulation accuracy
– 1% 1%
V
O(OUT)
= V
O(REG)
I
O(OUT)
= 1A 350 500
V
(DO)
AC dropout voltage (V
(AC)
– V
(OUT)
)
V
O(REG)
+ V
(DO-MAX)
) ≤ V
CC
V
O(OUT)
= V
O(REG)
ISET2 = High 350 500
mV
V
O(REG)
+ V
(DO-MAX)
) ≤ V
CC
USB dropout voltage
V
(DO)
(V
(USB)
– V
(OUT)
)
V
O(OUT)
= V
O(REG)
ISET2 = Low 60 100
V
O(REG)
+ V
(DO-MAX)
) ≤ V
CC
CURRENT REGULATION
V
I(OUT)
> V
(LOWV)
V
CC
≥ 4.5 V 50 1000
I
O(OUT)
AC output current range
(1)
V
I(AC)
– V
I(OUT)
> V
(DO-MAX)
V
CC(MIN)
≥ 4.5 V V
I(OUT)
> V
(LOWV)
80 100
mA
V
USB
– V
I(OUT)
> V
(DO-MAX)
ISET2 = Low
I
O(OUT)
USB output current range
V
CC(MIN
) ≥ 4.5 V V
I(OUT)
> V
(LOWV)
400 500
V
USB
– V
I(OUT)
> V
(DO-MAX)
ISET2 = High
Voltage on ISET1 pin, V
CC
≥ 4.5 V, V
IN
≥ 4.5 V, 2.463 2.500 2.538
V
(SET)
Output current set voltage V
V
I(OUT)
> V
(LOWV)
, V
IN
– V
I(OUT)
> V
(DO-MAX)
50 mA ≤ I
O(OUT)
≤ 1 A 307 322 337
K
(SET)
Output current set factor 10 mA ≤ I
O(OUT)
< 50 mA 296 320 346
1 mA ≤ I
O(OUT)
< 10 mA 246 320 416
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