BQ24901_13 Datasheet, PDF (4/18 Pages) Texas Instruments – OFFLNE APPLICATIONS

bq24901
SLUS527 – DECEMBER 2002
ELECTRICAL CHARACTERISTICS (continued)
Over recommended operating free-air temperature and supply voltage (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
BATTERY RECHARGE THRESHOLD (VRCH) COMPARATOR
V(RCH) Recharge threshold voltage
VO(REG)
– 0.24
POWER-ON RESET (POR)
V(POR) POR threshold voltage
2.60
TIMERS
t(PRECHG) Precharge time
t(CHG)
Charge time
OPTO-DRIVER PIN (OPTD)
VI(BAT) < V(LOWV)
V(LOWV) < VI(BAT) < VO(REG),
(VI(SNS) – VI(BAT)₎ < V(ITERM)
1,350
13,500
VSAT(OPTD) Output saturation voltage
IO(OPTD) = 10 mA
I(OPTDLKG) Opto-driver leakage current
V(OPTD) = 5 V,
VCC = 5.8 V,
VI(BAT) < VO(REG)
(VI(SNS) – VI(BAT)₎ < 184 mV
gM
Transconductance
IO(OPTD) = 5 mA
5
Gain-bandwidth product
IO(OPTD) = 5 mA, RLOAD = 100 Ω
DISCHARGE CURRENT, DISCHARGE VOLTAGE, CONDITION CURRENT AND WAKE CURRENT
I(DISCHG) Discharge current
1 V≤ VI(BAT) ≤ 4.2 V
60
t(DISCHG1) Discharge time 1
250
t(DISCHG2) Discharge time 2
20
V(DISCHG) Discharge voltage(1)
1.5
I(DETECT) Battery detection current
I(DETECT_min) at VCC = 5.8 V,VI(BAT) = 4.2 V
0.8
I(DETECT_max) at VCC = 6 V, VI(BAT) = 0 V
I(WK_SRC) Wake current, source 1
I(WK_SRC_min) _at VCC = 5.8 VV, _I(BAT) = 4.2 V
0.8
I(WK_SRC_max) _at VCC = 6 V, VI(BAT) = 0 V
I(WK_SINK) Wake current, source 2
I(WK_SINK_min) _at VCC = 5.8 VV,I(BAT) = 4.2 V
0
I(WK_SINK_max) _at VCC = 6 V,VI(BAT) = 0 V
t(WK)
Wake time
100
CHARGE STATUS OUTPUT (STAT1/STAT2)
VOL(STATx) Low-level output saturation voltage IO(STATx) = 10 mA, VCC ≥ 3.5 V
VOLTAGE REFERENCE OUTPUT (VREF)
VREF voltage threshold
CHARGE CONTROL OUTPUT (CC)
0 V < IO(VREF) < 500 µA, 0°C ≤ TA ≤ 70°C
1.18
VOL
Low-level output voltage (FstChg) IO(CC) = 40 mA (sink)
COUT
Output capacitance
LDO to BAT,
LDO to VSS
0.1
UNDERVOLTAGE THRESHOLD SHORT-CIRCUIT PROTECTION
V(UVT)
Undervoltage threshold voltage
2.00
(1)
Ensured by design. Not production tested.
TYP MAX
VO(REG)
– 0.12
2.70 2.85
1,800 2,250
18,000 22,500
100
100
500
1
300
800
310
370
25
30
2.0
2.5
30
30
1000
125
150
0.5
1.22
0.45
10.0
2.15
UNIT
V
V
s
mV
µA
S
MHz
µA
ms
V
mA
µA
ms
V
V
V
µF
V
4
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