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LT3439EFE#TRPBF PDF预览

LT3439EFE#TRPBF

更新时间: 2024-11-23 12:58:11
品牌 Logo 应用领域
凌特 - Linear 变压器驱动器
页数 文件大小 规格书
12页 189K
描述
LT3439 - Slew Rate Controlled Ultralow Noise 1A Isolated DC/DC Transformer Driver; Package: TSSOP; Pins: 16; Temperature Range: -40°C to 85°C

LT3439EFE#TRPBF 技术参数

是否Rohs认证:符合生命周期:Transferred
零件包装代码:TSSOP包装说明:TSSOP,
针数:16Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.18Is Samacsys:N
模拟集成电路 - 其他类型:SWITCHING REGULATOR最大输入电压:17.5 V
最小输入电压:2.8 V标称输入电压:5 V
JESD-30 代码:R-PDSO-G16JESD-609代码:e3
长度:5 mm湿度敏感等级:1
功能数量:1端子数量:16
最高工作温度:70 °C最低工作温度:
最大输出电流:1.65 A封装主体材料:PLASTIC/EPOXY
封装代码:TSSOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:1.2 mm
表面贴装:YES切换器配置:BOOST
最大切换频率:250 kHz温度等级:COMMERCIAL
端子面层:Matte Tin (Sn)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:30宽度:4.4 mm
Base Number Matches:1

LT3439EFE#TRPBF 数据手册

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LT3439  
Slew Rate Controlled  
Ultralow Noise1A Isolated  
DC/DC Transformer Driver  
U
FEATURES  
DESCRIPTIO  
Reduced Conducted and Radiated EMI  
The LT®3439 is a push-pull DC/DC transformer driver that  
reduces conducted and radiated electromagnetic interfer-  
ence (EMI). Ultralow noise and EMI are achieved by  
controlling the output switch voltage and current slew  
rates. Slew rates are user adjustable to optimize output  
noise versus efficiency. The LT3439 can reduce high  
frequencyharmoniccontentbyasmuchas40dBwithonly  
a minor decrease in efficiency.  
Single Resistor Control of Output Switch Voltage  
and Current Slew Rates  
Cross Conduction Prevention Circuitry  
Two 1A Current Limited Power Switches  
Low Minimum Supply Voltage: 2.8V  
Low Shutdown Current: <20µA  
50% Duty Cycle  
20kHz to 250kHz Oscillator Frequency  
TheLT3439includestwo1Acurrentlimitedpowerswitches  
to ensure start-up under heavy loads. It also includes an  
oscillator that can be synchronized to an external clock for  
more accurate placement of switcher harmonics. Protec-  
tion features include current limiting, undervoltage lock-  
out, thermal shutdown and cross conduction prevention  
circuitry.  
Synchronizable to 300kHz  
Overcurrent and Overtemperature Protected  
U
APPLICATIO S  
Low Noise Isolated Supplies  
Radio and Telecom Supplies  
The LT3439 is available in a thermally enhanced 16-pin  
TSSOP with an exposed backside.  
Distributed Supplies  
Medical Instruments  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Precision Instruments  
Low Noise Filament Supplies  
U
TYPICAL APPLICATIO  
Low Noise 5V to 5V Push-Pull DC/DC Transformer  
5V Output Noise  
OPTIONAL  
D1  
L1 33µH  
V
IN  
5V  
V
A
B
T1  
OUT  
5V  
C
IN  
13  
C1  
47µF  
6.3V  
C2  
47µF  
6.3V  
500mA  
22µF  
V
10V  
IN  
B
3
11  
200µV/DIV  
SHDN  
SYNC  
COL A  
COL B  
LT3439  
14  
4
5
6
C
T
D2  
C
: MURATA GRM235Y5V226Z10  
C1, C2: TDK C4532X5R0J476M  
D1, D2: MBR0520  
L1: TDK SLF6028T-330MR69  
T1: COILTRONICS 15835  
IN  
680pF  
7
R
R
SL  
T
A
16.9k  
GND  
10  
PGND  
1, 16  
20mV/DIV  
34k  
3439 TA01  
5µs/DIV  
3439 TA01b  
sn3439 3439fs  
1

LT3439EFE#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LT3439EFE#PBF Linear

类似代替

LT3439 - Slew Rate Controlled Ultralow Noise 1A Isolated DC/DC Transformer Driver; Package

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