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LT1950EGN#TRPBF

更新时间： 2024-10-03 20:39:43
品牌 Logo 应用领域
凌特 - Linear 开关光电二极管
页数 文件大小 规格书
20页 216K
描述
LT1950 - Single Switch PWM Controller with Auxiliary Boost Converter; Package: SSOP; Pins: 16; Temperature Range: -40°C to 85°C

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中文翻译

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LT1950EGN#TRPBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：SSOP包装说明：SSOP,
针数：16Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.18模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：25 V最小输入电压：3 V
标称输入电压：15 VJESD-30 代码：R-PDSO-G16
JESD-609代码：e3长度：4.8895 mm
湿度敏感等级：1功能数量：1
端子数量：16最高工作温度：125 °C
最低工作温度：最大输出电流：0.18 A
封装主体材料：PLASTIC/EPOXY封装代码：SSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.727 mm表面贴装：YES
切换器配置：SINGLE最大切换频率：560 kHz
温度等级：OTHER端子面层：Matte Tin (Sn)
端子形式：GULL WING端子节距：0.635 mm
端子位置：DUAL处于峰值回流温度下的最长时间：30
宽度：3.899 mmBase Number Matches：1

LT1950EGN#TRPBF 数据手册

 浏览型号LT1950EGN#TRPBF的Datasheet PDF文件第2页浏览型号LT1950EGN#TRPBF的Datasheet PDF文件第3页浏览型号LT1950EGN#TRPBF的Datasheet PDF文件第4页浏览型号LT1950EGN#TRPBF的Datasheet PDF文件第5页浏览型号LT1950EGN#TRPBF的Datasheet PDF文件第6页浏览型号LT1950EGN#TRPBF的Datasheet PDF文件第7页 
LT1950  
Single Switch PWM  
Controller with Auxiliary  
Boost Converter  
U
FEATURES  
DESCRIPTIO  
TheLT®1950isawideinputrange, forward,boost,flyback  
and SEPIC controller that drives an N-channel power  
MOSFET with few external components required.  
■
Wide Input Range: 3V to 25V  
■
Programmable Volt-Second Clamp  
■
Output Power Levels from 25W to 500W  
■
Auxiliary Boost Converter Provides 10V Gate Drive  
A resistor programmable duty cycle clamp can be used to  
generate a volt-second clamp for forward converter appli-  
cations. Aninternalboostswitcherisavailableforcreating  
a separate supply for the output gate driver, allowing 10V  
gate drive from input voltages as low as 3V. The LT1950’s  
operating frequency can be set with an external resistor  
over a 100kHz to 500kHz range and a SYNC pin allows the  
part to be synchronized to an external clock. Additional  
programmability exists for leading edge blanking and  
slope compensation.  
from VIN as Low as 3V  
■
Programmable Operating Frequency (100kHz to  
500kHz) with One External Resistor  
■
Programmable Slope Compensation  
■
Programmable Leading Edge Blanking  
■
±2% Internal 1.23V Reference  
■
Accurate Shutdown Pin Threshold with  
Programmable Hysteresis  
60ns Current Sense Delay  
■
■
2.5V Auxiliary Reference Output  
A fast current sense comparator achieves 60ns current  
sense delay and the error amplifier is a true voltage mode  
error amplifier, allowing a wide range of compensation  
networks. An accurate shutdown pin with programmable  
hysteresis is available for undervoltage lockout and shut-  
down. The LT1950 is available in a small 16-Pin SSOP  
package.  
■
Synchronizable to an External Clock up to 1.5 • fOSC  
■
Current Mode Control  
■
Small 16-Pin SSUOP Package  
APPLICATIO S  
■
Telecom Power Supplies  
■
Automotive Power Supplies  
■
Portable Electronic Equipment  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
■
Isolated and Nonisolated DC/DC Converters  
U
TYPICAL APPLICATIO  
36V to 72V DC to 26V/5A (Single Switch) Forward Converter  
Efficiency vs Load Current  
95  
90  
85  
80  
75  
70  
10V  
V
IN  
BIAS  
47µH  
47µF  
MBRB20200  
V
26V  
5A  
V
= 36V  
OUT  
IN  
SLOPE  
V
IN  
V
= 48V  
IN  
2.5V  
0.1µF  
470k  
V
V
IN2  
REF  
V
IN  
= 72V  
BOOST  
V
PA0581  
SEC  
R
SHDN  
OSC  
1µF  
18k  
249k  
LT1950  
Si7450  
BLANK  
SYNC  
GND  
FB  
GATE  
I
SENSE  
PGND  
0.015Ω  
COMP  
4.7k  
4.99k  
0.5  
1.5  
2.5  
3.5  
4.5  
5.5  
100k  
0.022µF  
LOAD CURRENT (A)  
1950 TA01a  
1950 TA01b 1950fa  
1
1234567...20

中文翻译

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