Datasheet

ELECTRICAL CHARACTERISTICS
bq24083
www.ti.com .............................................................................................................................................................. SLUS848A – MAY 2008 – REVISED APRIL 2009
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(VCC)
V
CC
current V
CC
> V
CC(min)
1.2 2 mA
Sum of currents into OUT pin,
I
CC(SLP)
Sleep current 2 5
V
CC
< V
(SLP)
µ A
I
CC(STBY)
Standby current CE = High, 0 ° C ≤ T
J
≤ 85 ° C 150
I
IB(OUT)
Input current on OUT pin Charge DONE, V
CC
> V
CC(MIN)
1 5
VOLTAGE REGULATION V
O(REG)
+ V
(DO − MAX)
≤ V
CC
, I
(TERM)
< I
O(OUT)
≤ 1 A
VBSEL = HI 4.06
V
O(REG)
Output voltage V
VBSEL = LO 4.2
T
A
= 25 ° C − 0.35% 0.35%
Voltage regulation accuracy
− 1% 1%
V
O(OUT)
= V
O(REG)
, I
O(OUT)
= 1 A
V
(DO)
Dropout voltage (V
(IN)
− V
(OUT)
) 350 500 mV
V
O(REG)
+ V
(DO)
) ≤ V
CC
CURRENT REGULATION
V
I(OUT)
> V
(LOWV)
,
I
O(OUT)
Output current range
(1)
50 1000 mA
V
I(IN)
− V
I(OUT)
> V
(DO)
, V
CC
≥ 4.5 V
Voltage on ISET pin, V
CC
≥ 4.5 V,
V
(SET)
Output current set voltage V
I
≥ 4.5 V, V
I(OUT)
> V
(LOWV)
, 2.463 2.5 2.538 V
V
I
− V
I(OUT)
> V
(DO)
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
PRECHARGE AND SHORT-CIRCUIT CURRENT REGULATION
Precharge to fast-charge transition
V
(LOWV)
Voltage on OUT pin 2.8 3 3.2 V
threshold
V
CC(MIN)
≥ 4.5 V, t
FALL
= 100 ns,
Deglitch time for fast-charge to precharge
10-mV overdrive, 250 375 500 ms
transition
V
I(OUT)
decreasing below threshold
I
O(PRECHG)
Precharge range
(2)
0 V < V
I(OUT)
< V
(LOWV)
, t < t
(PRECHG)
5 100 mA
Voltage on ISET pin, V
O(REG)
= 4.2 V,
V
(PRECHG)
Precharge set voltage 240 255 270 mV
0 V < V
I(OUT)
> V
(LOWV)
, t < t
(PRECHG)
TERMINATION DETECTION
I
(TERM)
Charge termination detection range
(3)
V
I(OUT)
> V
(RCH)
, t < t
(TRMDET)
5 100 mA
Voltage on ISET pin, V
O(REG)
= 4.2 V,
V
(TERM)
Charge termination detection set voltage 235 250 265 mV
V
I(OUT)
> V
(RCH)
, t < t
(TRMDET)
V
CC(MIN)
≥ 4.5 V, t
FALL
= 100 ns
t
TRMDET
Deglitch time for termination detection charging current decreasing below 250 375 500 ms
10-mV overdrive
(1) See Equation 2 in the Function Description section.
(2) See Equation 1 in the Function Description section.
(3) See Equation 4 in the Function Description section.
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