参数资料
型号: LT3581EMSE#PBF
厂商: Linear Technology
文件页数: 4/36页
文件大小: 0K
描述: IC REG MULTI CONFIG ADJ 16MSOP
标准包装: 37
类型: 升压(升压),反相,回扫,Sepic
输出类型: 可调式
输出数: 1
输出电压: 1.22 V ~ 42 V
输入电压: 2.5 V ~ 22 V
PWM 型: 电流模式
频率 - 开关: 200kHz ~ 2.5MHz
电流 - 输出: 3.3A
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 16-TFSOP(0.118",3.00mm 宽)裸露焊盘
包装: 管件
供应商设备封装: 16-MSOP,裸露焊盘
LT3581
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 = 5V, V SHDN = V IN , V FAULT = V IN , unless otherwise noted. (Note 2).
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Soft-Start Charge Current
Soft-Start Discharge Current
Soft-Start High Detection Voltage
Soft-Start Low Detection Voltage
SHDN Minimum Input Voltage High
SHDN Input Voltage Low
SHDN Pin Bias Current
CLKOUT Output Voltage High
CLKOUT Output Voltage Low
V SS = 30mV, Current Flows Out of SS pin
Part in FAULT, V SS = 2.1V, Current Flows into SS Pin
Part in FAULT
Part Exiting FAULT
Active Mode, SHDN Rising (LT3581E, LT3581I)
Active Mode, SHDN Rising (LT3581H)
Active Mode, SHDN Falling (LT3581E, LT3581I, LT3581H)
Shutdown Mode
V SHDN = 3V
V SHDN = 1.3V
V SHDN = 0V
C CLKOUT = 50pF
C CLKOUT = 50pF
l
l
l
l
l
l
l
l
5.7
5.7
1.65
30
1.27
1.27
1.24
9.7
1.9
8.7
8.7
1.8
50
1.33
1.33
1.3
40
11.4
0
2.1
5
11.3
11.3
1.95
85
1.41
1.44
1.38
0.3
60
13.4
0.1
2.3
200
μA
μA
V
mV
V
V
V
V
μA
μA
μA
V
mV
CLKOUT Duty Cycle
CLKOUT Rise Time
CLKOUT Fall Time
T J = 25°C
C CLKOUT = 50pF
C CLKOUT = 50pF
42
12
8
%
ns
ns
GATE Pull Down Current
GATE Leakage Current
FAULT Output Voltage Low
FAULT Leakage Current
FAULT Input Voltage Low
FAULT Input Voltage High
V GATE = 3V (LT3581E, LT3581I)
V GATE = 3V (LT3581H)
V GATE = 80V (LT3581E, LT3581I, LT3581H)
V GATE = 50V, GATE Off
100μA into FAULT Pin (LT3581E, LT3581I)
100μA into FAULT Pin (LT3581H)
V FAULT = 40V, FAULT Off
l
l
l
l
l
l
l
800
700
800
700
950
933
900
933
0.01
150
150
0.01
750
1000
1100
1100
1100
1
300
400
1
800
1050
μA
μA
μA
μA
mV
mV
μA
mV
mV
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: The LT3581E is guaranteed to meet performance specifications
from 0°C to 125°C. Specifications over the –40°C to 125°C junction
temperature range are assured by design, characterization and correlation
with statistical process controls. The LT3581I is guaranteed over the full
–40°C to 125°C operating junction temperature range. The LT3581H is
guaranteed over the full –40°C to 150°C operating junction temperature
range. Operating lifetime is derated at junction temperatures greater than
125°C.
Note 3: Current limit guaranteed by design and/or correlation to static test.
Note 4: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 150°C when overtemperature protection is active.
Continuous operation over the specified maximum operating junction
temperature may impair device reliability.
3581fa
4
For more information www.linear.com/LT3581
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