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LM5025BMTC

  

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National-Semiconductor
National ->Texas Instruments
LM5025BMTC Active Clamp Voltage Mode PWM Controller

General Description
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 VCCregulator continues to operate when the line UVLO is below the threshold of
   normal operation
• The VREFregulator is switched off when the line UVLO input falls below the operating threshold
• The internal 5kΩCOMP 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

Packages
■ TSSOP-16
■ LLP-16 (5x5 mm) Thermally Enhanced


other parts : LM5025B  LM5025BMTCX  LM5025BSD  LM5025BSDX  
LM5025BMTC PDF
National-Semiconductor
National ->Texas Instruments
LM5025BMTCX Active Clamp Voltage Mode PWM Controller

General Description
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 VCCregulator continues to operate when the line UVLO is below the threshold of
   normal operation
• The VREFregulator is switched off when the line UVLO input falls below the operating threshold
• The internal 5kΩCOMP 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

Packages
■ TSSOP-16
■ LLP-16 (5x5 mm) Thermally Enhanced


other parts : LM5025B  LM5025BMTC  LM5025BSD  LM5025BSDX  
LM5025BMTCX PDF
TI
Texas Instruments
LM5025BMTC/NOPB Active Clamp Voltage Mode PWM Controller

DESCRIPTION
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

PACKAGES
• TSSOP-16
• WSON-16 (5x5 mm) Thermally Enhanced


other parts : LM5025B  LM5025BMTCX/NOPB  LM5025BSD  LM5025BSD/NOPB  
LM5025BMTC/NOPB PDF
TI
Texas Instruments
LM5025BMTCX/NOPB Active Clamp Voltage Mode PWM Controller

DESCRIPTION
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

PACKAGES
• TSSOP-16
• WSON-16 (5x5 mm) Thermally Enhanced


other parts : LM5025B  LM5025BMTC/NOPB  LM5025BSD  LM5025BSD/NOPB  
LM5025BMTCX/NOPB PDF

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