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参数资料
| 型号： | LT3663HMS8E#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 2.5 A SWITCHING REGULATOR, 1650 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | LEAD FREE, PLASTIC, MSOP-8 |
| 文件页数： | 10/16页 |
| 文件大小： | 188K |
| 代理商： | LT3663HMS8E#TRPBF |
LT3663
3
3663fb
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: Absolute Maximum Voltage at VIN and RUN pins is 60V for
nonrepetitive 1 second transients.
Note 3: The LT3663E is guaranteed to meet performance specications
from 0°C to 125°C. Specications over the –40°C to 125°C operating
temperature range are assured by design, characterization, and
correlation with statistical process controls. The LT3663I specications
The
l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VIN = 12V, RILIM = 36.5k unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN Undervoltage Lockout
Rising
l
7
7.5
V
VIN Undervoltage Lockout Hysteresis
500
mV
VIN Overvoltage Lockout
Rising
l
36
39
41
V
VIN Overvoltage Lockout Hysteresis
1V
VIN Supply Current
Not Switching
2.4
3.2
mA
VIN Supply Current in Shutdown
VRUN = 0V
0.01
2
μA
Run Input Voltage High
2.5
V
Run Input Voltage Low
0.3
V
Run Pin Bias Current
VRUN = 2.3V (Note4)
VRUN = 0V
6
0.01
15
0.1
μA
VOUT Current Limit Range
l
0.4
1.2
A
VOUT Current Limit
l
0.8
1
1.2
A
Operating Frequency
LT3663
LT3663-X
1350
900
1500
1000
1650
1100
kHz
Maximum Duty Cycle
l
80
92
%
Feedback Voltage
LT3663
l
784
800
816
mV
FB Bias Current
VFB = 0.8V, LT3663
50
150
nA
Regulated Output Voltage
LT3663-3.3
LT3663-5
l
3.234
4.900
3.3
5
3.366
5.100
V
VOUTS Bias Current
LT3663-X
90
120
μA
Switch Peak Current Limit
(Note 5)
l
1.6
2
2.5
A
Switch VCESAT
ISW = 1A
275
mV
Minimum BOOST Voltage
ISW = 1A (Note 6)
1.85
2.2
V
Boost Diode Drop
IDIODE = 60mA
0.9
1.2
V
Boost Pin Current
ISW = 1A
28
mA
are guaranteed over the full –40°C to 125°C temperature range. The
LT3663H specications are guaranteed over the –40°C to 150°C operating
temperature range. High junction temperatures degrade operating
lifetimes. Operating lifetime is derated at junction temperatures greater
than 125°C.
Note 4: Current ows into pin.
Note 5: Switch Peak Current Limit guaranteed by design and/or correlation
to static test.
Note 6: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the switch.
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3663IMS8E-5#PBF
LT3663IMS8E-5#TRPBF
LTFMZ
8-Lead Plastic MSOP
–40°C to 125°C
LT3663HMS8E-5#PBF
LT3663HMS8E-5#TRPBF
LTFMZ
8-Lead Plastic MSOP
–40°C to 150°C
Consult LTC Marketing for parts specied with wider operating temperature ranges. *The temperature grade is identied by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specications, go to: http://www.linear.com/tapeandreel/
ORDER INFORMATION
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