參數(shù)資料
型號(hào)： BQ24901
英文描述： Fast Recovery Bridge Rectifiers
中文描述： 單細(xì)胞Li-Ion/Li-Pol脫機(jī)應(yīng)用充電器（小方控制）采用TSSOP - 14
文件頁數(shù)： 4/16頁
文件大?。?/td> 227K
代理商： BQ24901
SLUS527
–
DECEMBER 2002
4
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Over recommended operating free-air temperature and supply voltage (unless otherwise noted)
PARAMETER
UNIT
MAX
TYP
MIN
TEST CONDITIONS
BATTERY RECHARGE THRESHOLD (VRCH) COMPARATOR
V(RCH)
Recharge threshold voltage
VO(REG)
–
0.24
VO(REG)
–
0.12
V
POWER-ON RESET (POR)
V(POR)
TIMERS
t(PRECHG)
POR threshold voltage
2.60
2.70
2.85
V
Precharge time
VI(BAT) < V(LOWV)
V(LOWV) < VI(BAT) < VO(REG),
(VI(SNS)
–
VI(BAT)
)
< V(ITERM)
1,350
1,800
2,250
t(CHG)
Charge time
13,500
18,000
22,500
s
OPTO-DRIVER PIN (OPTD)
VSAT(OPTD)
Output saturation voltage
IO(OPTD) = 10 mA
V(OPTD) = 5 V,
VCC = 5.8 V,
IO(OPTD) = 5 mA
IO(OPTD) = 5 mA, RLOAD = 100
100
mV
I(OPTDLKG)
Opto-driver leakage current
VI(BAT) < VO(REG)
(VI(SNS)
–
VI(BAT)
)
< 184 mV
100
μ
A
gM
Transconductance
5
500
S
Gain-bandwidth product
1
MHz
DISCHARGE CURRENT, DISCHARGE VOLTAGE, CONDITION CURRENT AND WAKE CURRENT
1 V
≤
VI(BAT)
≤
4.2 V
t(DISCHG1)
Discharge time 1
t(DISCHG2)
Discharge time 2
V(DISCHG)
I(DETECT_min) at VCC = 5.8 V,VI(BAT) = 4.2 V
I(DETECT)
Battery detection current
I(DETECT_max) at VCC = 6 V, VI(BAT) = 0 V
I(WK_SRC_min) at VCC = 5.8 V,VI(BAT) = 4.2 V
I(WK_SRC)
Wake current, source 1
I(WK_SRC_max) at VCC = 6 V,VI(BAT) = 0 V
I(WK_SINK_min) at VCC = 5.8 V,I(BAT) = 4.2 V
I(WK_SINK)
Wake current, source 2
I(WK_SINK_max) at VCC = 6 V,VI(BAT) = 0 V
t(WK)
Wake time
CHARGE STATUS OUTPUT (STAT1/STAT2)
IO(STATx) = 10 mA, VCC
≥
3.5 V
VOLTAGE REFERENCE OUTPUT (VREF)
0 V < IO(VREF) < 500
μ
A,
CHARGE CONTROL OUTPUT (CC)
I(DISCHG)
Discharge current
60
300
800
μ
A
250
310
370
ms
20
25
30
Discharge voltage(1)
1.5
2.0
2.5
V
Batter detection c rrent
0.8
30
mA
Wake current source 1
0.8
30
Wake c rrent so rce 2
0
1000
μ
A
100
125
150
ms
VOL(STATx)
Low-level output saturation voltage
0.5
V
VREF voltage threshold
0
°
C
≤
TA
≤
70
°
C
1.18
1.22
V
VOL
COUT
UNDERVOLTAGE THRESHOLD SHORT-CIRCUIT PROTECTION
Low-level output voltage (FstChg)
IO(CC) = 40 mA (sink)
LDO to BAT,
0.45
V
μ
F
Output capacitance
LDO to VSS
0.1
10.0
V(UVT)
Undervoltage threshold voltage
2.00
2.15
V
(1)
Ensured by design. Not production tested.
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