參數(shù)資料
型號： BQ24901
英文描述： Fast Recovery Bridge Rectifiers
中文描述： 單細胞Li-Ion/Li-Pol脫機應(yīng)用充電器（小方控制）采用TSSOP - 14
文件頁數(shù)： 3/16頁
文件大小： 227K
代理商： BQ24901
SLUS527
–
DECEMBER 2002
3
www.ti.com
ELECTRICAL CHARACTERISTICS
Over recommended operating free-air temperature and supply voltage (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY CURRENT
ICC(VCC)
IIB(BAT)
IIB(TS)
IIB(SNS)
IIB(TADJ)
BATTERY VOLTAGE and VCC REGULATION
VO(REG)
Output voltage
VCC
Supply voltage
CURRENT REGULATION
Input current
VCC > VCC(min)
VI(BAT) > VO(REG), when not in charge
VI(TS) = 2.5 V
VCC = 6 V, VI(SNS) = 6 V when not in charge
VI(TADJ) = VREF
2
mA
Input bias current on BAT pin
1
Input bias current on TS pin
1
Input bias current on SNS pin
1
μ
A
Input bias current on TADJ pin
1
0
°
C
≤
TA
≤
70
°
C
4.17
4.20
4.23
V
5.8
6.0
6.3
V(SNS)
Current regulation threshold
voltage
Voltage at pin SNS relative to BAT,
0
°
C
≤
TA
≤
70
°
C,
V(LOWV)
≤
V(SNS)
≤
VO(REG)
184
200
216
mV
Input common mode range on
SNS pin
V(UVT)
VCC
V
PRE-CHARGE AND SHORT-CIRCUIT CURRENT REGULATION
Pre-charge voltage threshold
Voltage at pin SNS relative to BAT pin,
TA
≤
70
°
C
V(UVT)
≤
VI(BAT)
≤
V(LOWV)
0
°
C
≤
TA
≤
70
°
C,
0
°
C
≤
10
20
30
mV
ISC
CHARGE TERMINATION DETECTION
Short-circuit current
0
≤
VI(BAT)
≤
V(UVT)
5.4
30.0
mA
V(ITERM)
Charge termination current detect
threshold
Voltage at pin SNS relative to BAT pin,
0
°
C
≤
TA
≤
70
°
C
VI(SNS) = VO(REG)VI(BAT) > V(RCH)
Voltage at pin SNS relative to BAT pin,
0
°
C
≤
TA
≤
70
°
C
VI(SNS) = VO(REG)VI(BAT) > V(RCH)
(VI(SNS)
–
VI(BAT)
)
< V(ITERM) , VBAT increasing
above threshold
(VSNS
–
VBAT
)
increasing above threshold,
VI(BAT) > V(EN
–
TERM),
2 mV overdrive
(VSNS
–
VBAT
)
increasing above threshold,
VI(BAT) > V(EN
–
TERM),
2 mV overdrive
TADJ pin tied to VREF pin,
16
20
24
mV
TADJ pin tied to VSS pin,
7.5
10.0
12.5
V(EN-TERM)
Enable termination voltage
VO(REG)
–
210
VO(REG)
–
160
VO(REG)
–
110
V
t(TRMDET2)
Falling-edge delay for termination
detection
100 ns fall time
100
μ
s
t(TRMDET1)
Rising-edge delay for termination
detection
100 ns fall time
20
ms
TEMPERATURE COMPARATOR
V(LTF)
Cold temperature threshold voltage
V(HTF)
Hot temperature threshold voltage
V(TCO)
Cutoff temperature threshold voltage
LTF hysteresis
VTS,
VTS,
VTS,
Hysteresis for LTF threshold voltage
VCC
≥
3.5 V
VCC
≥
3.5 V
VCC
≥
3.5 V
72.6
73.5
74.1
33.7
34.4
35.1
%VCC
28.7
29.3
29.9
0.1
0.6
1.1
LOW BATTERY VOLTAGE (LOWV) THRESHOLD COMPARATOR
V(LOWV)
3.00
3.05
3.15
V
(1)
Ensured by design. Not production tested.
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