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| 型号： | LT3663EMS8E-5#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK 5V 1.2A 8MSOP |
| 标准包装： | 50 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 5V |
| 输入电压： | 7.5 V ~ 36 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 1.2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽）裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 8-MSOP-EP |
| 产品目录页面： | 1332 (CN2011-ZH PDF) |
LT3663
ORDER INFORMATION
LEAD FREE FINISH
LT3663IMS8E-5#PBF
LT3663HMS8E-5#PBF
TAPE AND REEL
LT3663IMS8E-5#TRPBF
LT3663HMS8E-5#TRPBF
PART MARKING*
LTFMZ
LTFMZ
PACKAGE DESCRIPTION
8-Lead Plastic MSOP
8-Lead Plastic MSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 150°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25°C. V IN = 12V, R ILIM = 36.5k unless otherwise noted.
PARAMETER
V IN Undervoltage Lockout
CONDITIONS
Rising
l
MIN
TYP
7
MAX
7.5
UNITS
V
V IN Undervoltage Lockout Hysteresis
500
mV
V IN Overvoltage Lockout
Rising
l
36
39
41
V
V IN Overvoltage Lockout Hysteresis
1
V
V IN Supply Current
V IN Supply Current in Shutdown
Not Switching
V RUN = 0V
2.4
0.01
3.2
2
mA
μA
Run Input Voltage High
Run Input Voltage Low
2.5
0.3
V
V
Run Pin Bias Current
V OUT Current Limit Range
V RUN = 2.3V (Note4)
V RUN = 0V
l
0.4
6
0.01
15
0.1
1.2
μA
μA
A
V OUT Current Limit
Operating Frequency
Maximum Duty Cycle
LT3663
LT3663-X
l
l
0.8
1350
900
80
1
1500
1000
92
1.2
1650
1100
A
kHz
kHz
%
Feedback Voltage
FB Bias Current
Regulated Output Voltage
V OUTS Bias Current
Switch Peak Current Limit
LT3663
V FB = 0.8V, LT3663
LT3663-3.3
LT3663-5
LT3663-X
(Note 5)
l
l
l
l
784
3.234
4.900
1.6
800
50
3.3
5
90
2
816
150
3.366
5.100
120
2.5
mV
nA
V
V
μA
A
Switch V CESAT
I SW = 1A
275
mV
Minimum BOOST Voltage
Boost Diode Drop
Boost Pin Current
I SW = 1A (Note 6)
I DIODE = 60mA
I SW = 1A
1.85
0.9
28
2.2
1.2
V
V
mA
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 V IN and RUN pins is 60V for
nonrepetitive 1 second transients.
Note 3: The LT3663E is guaranteed to meet performance specifications
from 0°C to 125°C. Specifications over the –40°C to 125°C operating
temperature range are assured by design, characterization, and
correlation with statistical process controls. The LT3663I specifications
are guaranteed over the full –40°C to 125°C temperature range. The
LT3663H specifications 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 flows 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.
3
For more information For more information www.linear.com/LT3663
3663fc
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