参数资料
型号: LTC3535EDD#TRPBF
厂商: Linear Technology
文件页数: 3/16页
文件大小: 0K
描述: IC REG BST SYNC ADJ 0.55A 12DFN
标准包装: 2,500
类型: 升压(升压)
输出类型: 可调式
输出数: 2
输出电压: 1.5 V ~ 5.25 V
输入电压: 0.5 V ~ 5 V
PWM 型: 电流模式,混合
频率 - 开关: 1MHz
电流 - 输出: 550mA
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 12-WFDFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 12-DFN
LTC3535
ELECTRICAL CHARACTERISTICS (For each channel) The l denotes the specifications which apply over the specified
operating temperature range of –40°C to 85°C, o therwise      specifications are at T A = 25°C. V IN = 1.2V, V OUT = 3.3V unless otherwise noted.
PARAMETER
Minimum Duty Cycle
CONDITIONS
V FB = 1.3V
l
MIN
TYP
MAX
0
UNITS
%
Switching Frequency
l
0.75
1
1.25
MHz
SHDN Pin Input High Voltage
SHDN Pin Input Low Voltage
0.8
0.3
V
V
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 LTC3535 is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: Specification is guaranteed by design and not 100% tested in
production.
Note 4: Current measurements are made when the output is not switching.
Note 5: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may result in device degradation or failure.
Note 6: Failure to solder the exposed backside of the package to the PC
board ground plane will result in a thermal resistance much higher than
43°C/W.
TYPICAL PERFORMANCE CHARACTERISTICS (Each Channel) T A = 25°C, unless otherwise noted.
Efficiency vs Load Current
and V IN for V OUT = 1.8V
Efficiency vs Load Current
and V IN for V OUT = 3.3V
No-Load Input Current vs V IN
100
90
80
EFFICIENCY
1000
100
100
90
80
EFFICIENCY
1000
100
100
90
80
V OUT = 5V
70
70
70
V OUT = 3.3V
V IN = 1.2V
V IN = 1.8V
60
50
40
30
20
10
0
0.01
0.1
POWER LOSS
V IN = 1.2V
V IN = 1.5V
1 10 100 1000
10
1
V IN = 1.0V 0.1
0.01
60
50
40
30
20
10
0
0.01
0.1
POWER LOSS
V IN = 2.4V
V IN = 3.0V
1 10 100 1000
10
1
0.1
0.01
60
50
40
30
20
10
0.5
1.0
1.5
V OUT = 2.5V
V OUT = 1.8V
2.0 2.5 3.0
3.5
4.0
4.5
LOAD CURRENT (mA)
3535 G01
LOAD CURRENT (mA)
3535 G02
V IN (V)
3535 G04
3535fa
3
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