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参数资料
| 型号： | LTC3539EDCB-2#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/14页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC ADJ 2A 8DFN |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 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： | 2MHz |
| 电流 - 输出： | 2A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-DFN（3x2） |
LTC3539/LTC3539-2
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified
temperature range of –40°C to 85°C, otherwise specifications are at T A = 25°C. V IN = 1.2V, V OUT = 3.3V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Maximum Duty Cycle
Minimum Duty Cycle
V FB = 1.15V
V FB = 1.3V
l
l
87
90
0
%
%
Switching Frequency
LTC3539
LTC3539-2
l
l
0.7
1.8
1
2
1.3
2.4
MHz
MHz
MODE Input High Voltage
MODE Input Low Voltage
0.88
0.3
V
V
MODE Input Current
V MODE = 1.2V
0.3
1
μA
SHDN Input High Voltage
SHDN Input Low Voltage
0.88
0.3
V
V
SHDN Input Current
V SHDN = 1.2V
V SHDN = 3.3V
0.3
1
1
2
μA
μA
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 LTC3539E/LTC3539E-2 is guaranteed to meet performance
specifications from 0°C to 85°C. Specifications over –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
64°C/W.
TYPICAL PERFORMANCE CHARACTERISTICS
(T A = 25°C unless otherwise noted)
100
Efficiency vs Load Current and
V IN , V OUT = 1.8V
1000
100
Efficiency vs Load Current and
V IN , V OUT = 3.3V
1000
90
90
80
70
EFFICIENCY
100
80
70
EFFICIENCY
100
60
10
60
V IN = 1V
V IN = 1.5V
V IN = 3V
50
40
30
20
10
0
0.1
1
10
POWER LOSS
V IN = 1.2V
100 1000
1
0.1
0.01
50
40
30
20
10
0
0.1
1
10
POWER LOSS
V IN = 1.2V
V IN = 1.8V
100 1000
10
1
0.1
LOAD CURRENT (mA)
3539 G01
LOAD CURRENT (mA)
3539 G02
35392fb
For more information www.linear.com/3539/3539-2
3
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