LT3651 查看數據表（PDF） - Linear Technology
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LT3651 Datasheet PDF : 22 Pages
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LT3651-4.1/LT3651-4.2
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = 20V, SHDN = 2V, SENSE = BAT = VBAT(FLT),
CTIMER = 0.68µF, RT = 50k, CLP = CLN = VIN, BOOST – SW = 4V.
PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
VIN Operating Range
l 6.5
32
V
VIN OVLO Threshold
VIN Rising
32
35
40
V
VIN OVLO Hysteresis
1.1
V
VIN UVLO Threshold
VIN UVLO Hysteresis
Battery Float Voltage, VBAT(FLT)
VIN Rising
LT3651-4.1
l
4.6
4.8
V
0.2
V
4.08
4.1
4.12
V
l 4.05
4.14
LT3651-4.2
4.18
4.2
4.22
V
l 4.16
4.24
Battery Recharge Voltage Hysteresis
Threshold Voltage Relative to VBAT(FLT)
–105
mV
Battery Precondition Threshold Voltage,
VBAT(PRE)
Battery Precondition Threshold Hysteresis
LT3651-4.1 VBAT Rising
LT3651-4.2 VBAT Rising
Threshold Voltage Relative to VBAT(PRE)
2.85
V
2.9
V
70
mV
Operating VIN Supply Current
CC/CV Mode, Top Switch On, ISW = 0A
Standby Mode
Shutdown (SHDN = 0V)
8.6
mA
85
µA
17
µA
Top Switch On Voltage
Bottom Switch On Voltage
BOOST Supply Current
BOOST Switch Drive
Precondition Current Sense Voltage
Input Current Limit Voltage
CLP Input Bias Current
VIN – VSW , ISW = 4A
480
VSW , ISW = 4A
–140
Switch High, ISW = 0A, 2.5V < (VBOOST – VSW) < 4.5V
40
IBOOST/ISW , ISW = 4A
25
VSENSE – VBAT , VBAT = 2.5V
14
VCLP – VCLN, ILIM Open
l 70
95
115
120
mV
mV
mA
mA/A
mV
mV
nA
CLN Input Bias Current
36
µA
ILIM Bias Current
l 43
50
57
µA
System Current Limit Programming Gain
VILIM/(VCLP – VCLN), VILIM = 0.5V
11.5
V/V
Maximum Charge Current Sense Voltage
C/10 Trigger Sense Voltage
BAT Input Bias Current
VSENSE – VBAT , VBAT = 3.5V, VRNG/SS > 1.1V
VSENSE – VBAT
Charging Terminated
l 88
95
103
mV
l 4.5
8.6
12.3
mV
0.1
1
µA
SENSE Input Bias Current
Charging Terminated
0.1
1
µA
RNG/SS Bias Current
l 44
50
56
µA
Charge Current Limit Programming Gain
NTC Range Limit (High)
NTC Range Limit (Low)
NTC Threshold Hysteresis
VRNG/SS/(VSENSE – VBAT), VRNG/SS = 0.5V
VNTC Rising
VNTC Falling
% of Threshold
l 8.5
10.8
12.5
V/V
l 1.25 1.36 1.45
V
l 0.27 0.29 0.31
V
10
%
NTC Disable Impedance
Minimum External Impedance to GND
l 150
470
kΩ
NTC Bias Current
Shutdown Threshold
Shutdown Hysteresis
VNTC = 0.75V
VSHDN Rising
l 46.5
50
53.5
µA
l 1.15 1.20 1.23
V
95
mV
SHDN Input Bias Current
–10
nA
Status Low Voltage
VCHRG, VFAULT , VACPR, Load = 10mA
l
0.45
V
For more information www.linear.com/LT3651-4.1
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