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LM5025MTC PDF预览

LM5025MTC

更新时间: 2024-11-22 22:47:03
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
16页 315K
描述
Active Clamp Voltage Mode PWM Controller

LM5025MTC 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:TSSOP-16Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.08模拟集成电路 - 其他类型:SWITCHING CONTROLLER
控制模式:VOLTAGE-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:15 V最小输入电压:8 V
标称输入电压:10 VJESD-30 代码:R-PDSO-G16
JESD-609代码:e0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:125 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:TSSOP封装等效代码:TSSOP16,.25
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:1.1 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:PUSH-PULL
最大切换频率:660 kHz温度等级:AUTOMOTIVE
端子面层:Tin/Lead (Sn/Pb)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:40宽度:4.4 mm
Base Number Matches:1

LM5025MTC 数据手册

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March 2004  
LM5025  
Active Clamp Voltage Mode PWM Controller  
General Description  
Features  
n Internal Start-up Bias Regulator  
n 3A Compound Main Gate Driver  
The LM5025 PWM controller contains all of the features  
necessary to implement power converters utilizing the Active  
Clamp / Reset technique. The device can be configured to  
control either a P-Channel clamp switch or an N-Channel  
clamp switch. With the active clamp technique, higher effi-  
ciencies and greater power densities can be realized com-  
pared to conventional catch winding or RDC clamp / reset  
techniques. Two control outputs are provided, the main  
power switch control (OUT_A) and the active clamp switch  
control (OUT_B). The active clamp output can be configured  
for either a guaranteed overlap time (for P-Channel switch  
applications) or a guaranteed deadtime (for N_Channel ap-  
plications). The two internal compound gate drivers parallel  
both MOS and Bipolar devices, providing superior gate drive  
characteristics. This controller is designed for high-speed  
operation including an oscillator frequency range up to 1MHz  
and total PWM and current sense propagation delays less  
than 100ns. The LM5025 includes a high-voltage start-up  
regulator that operates over a wide input range of 13V to  
90V. Additional features include: Line Under Voltage Lockout  
(UVLO), softstart, oscillator UP/DOWN sync capability, pre-  
cision reference and thermal shutdown.  
n Programmable Line Under-Voltage Lockout (UVLO) with  
Adjustable Hysteresis  
n Voltage Mode Control with Feed-Forward  
n Adjustable Dual Mode Over-Current Protection  
n Programmable Overlap or Deadtime between the Main  
and Active Clamp Outputs  
n Volt x Second Clamp  
n Programmable Soft-start  
n Leading Edge Blanking  
n Single Resistor Programmable Oscillator  
n Oscillator UP / DOWN Sync Capability  
n Precision 5V Reference  
n Thermal Shutdown  
Packages  
n TSSOP-16  
n LLP-16 (5x5 mm) Thermally Enhanced  
Typical Application Circuit  
20086901  
Simplified Active Clamp Forward Power Converter  
© 2004 National Semiconductor Corporation  
DS200869  
www.national.com  

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