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LT3579EUFD-1-PBF PDF预览

LT3579EUFD-1-PBF

更新时间： 2024-02-07 10:01:22
品牌 Logo 应用领域
凌特 - Linear 转换器
页数 文件大小 规格书
40页 512K
描述
6A Boost/Inverting DC/DC Converter with Fault Protection

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中文翻译

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LT3579EUFD-1-PBF 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：HVQCCN,
针数：20Reach Compliance Code：compliant
风险等级：5.14模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：16 V最小输入电压：2.5 V
标称输入电压：5 VJESD-30 代码：R-PQCC-N20
JESD-609代码：e3长度：5 mm
湿度敏感等级：1功能数量：1
端子数量：20最高工作温度：125 °C
最低工作温度：最大输出电流：9.4 A
封装主体材料：PLASTIC/EPOXY封装代码：HVQCCN
封装形状：RECTANGULAR封装形式：CHIP CARRIER
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
座面最大高度：0.8 mm表面贴装：YES
切换器配置：BOOST最大切换频率：2800 kHz
技术：BIPOLAR温度等级：OTHER
端子面层：Matte Tin (Sn)端子形式：NO LEAD
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：4 mm
Base Number Matches：1

LT3579EUFD-1-PBF 数据手册

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LT3579/LT3579-1  
6A Boost/Inverting  
DC/DC Converter with Fault Protection  
FEATURES  
DESCRIPTION  
The LT®3579 is a PWM DC/DC converter with built-in fault  
protection features to aid in protecting against output shorts,  
input/output overvoltage, and overtemperature conditions.  
Thepartconsistsofa42Vmasterswitch,anda42Vslaveswitch  
that can be tied together for a total current limit of 6A.  
n
6A, 42V Combined Power Switch  
n
n
Output Short Circuit Protection  
Wide Input Range: 2.5V to 16V Operating,  
40V Maximum Transient  
LT3579-1: Dual-Phase Capable  
n
n
n
n
Master/Slave (3.4A/2.6A) Switch Design  
User Configurable Undervoltage Lockout  
Easily Configurable as a Boost, SEPIC, Inverting, or  
Flyback Converter  
The LT3579 is ideal for many local power supply designs. It  
canbeeasilyconfiguredinBoost,SEPIC,Inverting,orFlyback  
configurations, and is capable of generating 12V at 1.7A, or  
–12Vat1.2Afroma5Vinput. Inaddition, theLT3579’sslave  
switch allows the part to be configured in high voltage, high  
power charge pump topologies that are very efficient and  
require fewer components than traditional circuits.  
n
n
n
n
Low V  
Switch: 250mV at 5.5A (Typical)  
CESAT  
Can be Synchronized to External Clock  
Can Synchronize other Switching Regulators  
High Gain SHDN Pin Accepts Slowly Varying Input  
Signals  
TheLT3579’sswitchingfrequencyrangecanbesetbetween  
200kHz and 2.5MHz. The part may be clocked internally at  
a frequency set by the resistor from the RT pin to ground,  
or it may be synchronized to an external clock. A buffered  
version of the clock signal is driven out of the CLKOUT  
pin, and may be used to synchronize other compatible  
switching regulator ICs to the LT3579.  
n
20-Lead TSSOP and 20-Pin 4mm × 5mm QFN  
Packages  
APPLICATIONS  
n
Local Power Supply  
n
Vacuum Flourescent Display (VFD) Bias Supplies  
TheLT3579alsofeaturesinnovativeSHDNpincircuitrythat  
allows for slowly varying input signals and an adjustable  
undervoltage lockout function. Additional features such  
as frequency foldback and soft-start are integrated. The  
LT3579 is available in 20-lead TSSOP and 20-pin 4mm ×  
5mm QFN packages.  
n
TFT-LCD Bias Supplies  
Automotive Engine Control Unit (ECU) Power  
n
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
Protected by U.S. Patents, including 7579816.  
TYPICAL APPLICATION  
Efficiency and Power Loss  
100  
90  
80  
70  
60  
50  
40  
30  
20  
3.2  
2.8  
2.4  
2.0  
1.6  
1.2  
0.8  
0.4  
0
1MHz, 5V to 12V Boost Converter with Output Short Circuit Protection  
2.2μH  
V
12V  
OUT  
V
5V  
IN  
1.7A  
10μF  
SW1 SW2  
130k 6.3k  
10μF  
FB  
GATE  
V
IN  
22μF  
100k  
200k  
FAULT  
V
IN  
LT3579  
TEMPERATURE  
MONITOR  
SHDN  
CLKOUT  
V
C
RT  
8k  
2.2nF  
SYNC GND SS  
86.6k  
0.1μF  
47pF  
0
0.25 0.5 0.75  
1
1.25 1.5 1.75  
2
3579 TA01  
LOAD CURRENT (A)  
35791 TA02  
35791f  
1
1234567...40

中文翻译

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