零件编号 : LM5025B
功能 : Active Clamp Voltage Mode PWM Controller
制造商 : Texas Instruments
引脚图 :
描述
The LM5025B is a functional variant of the LM5025 active clamp PWM controller. The functional differences of the LM5025B are as follows:
• The maximum PWM duty cycle is limited to less than 75% to reduce voltage stress on the power MOSFETs.
• The CS2 hiccup mode threshold is increased to 0.5V
• The CS2 filter discharge device is disabled
• The Vcc regulator continues to operate when the line UVLO is below the threshold of normal operation
• The Vref regulator is switched off when the line UVLO input falls below the operating threshold
• The internal 5kΩ COMP pin pull-up resistor is removed
FEATURES
• Internal Start-Up Bias Regulator
• 3A Compound Main Gate Driver
• Programmable Line Under-Voltage Lockout
(UVLO) with Adjustable Hysteresis
• Voltage Mode Control with Feed-Forward
• Adjustable Dual Mode Over-Current Protection
• Programmable Overlap or Deadtime between
the Main and Active Clamp Outputs
• Volt x Second Maximum Duty Cycle Clamp
• Programmable Soft-Start
• Current Sense Leading Edge Blanking
• Single Resistor Programmable Oscillator
• Oscillator Up / Down Sync Capability
• Precision 5V Reference
• Thermal Shutdown
数据手册 PDF资料下载
文件中的其他数据表：
LM5025B,LM5025BMTC/NOPB,LM5025BMTCX/NOPB,LM5025BSD,LM5025BSD/NOPB