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LM5009A

  

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National-Semiconductor
National ->Texas Instruments
LM5009A 100V, 150 mA Constant On-Time Buck Switching Regulator

General Description
The LM5009A is a functional variant of the LM5009 COT Buck Switching Regulator. The functional differences of the LM5009A are: The minimum input operating voltage is 6 volts, the on-time equation is slightly different, and the requirement for a minimum load current is removed.
The LM5009A Step Down Switching Regulator features all of the functions needed to implement a low cost, efficient, Buck bias regulator. This high voltage regulator contains an 100 V N-Channel Buck Switch. The device is easy to implement and is provided in the MSOP-8 and the thermally enhanced LLP-8 packages. The regulator is based on a control scheme using an ON time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant. The control scheme requires no loop compensation. An intelligent current limit is implemented with forced OFF time, which is inversely proportional to Vout. This scheme ensures short circuit control while providing minimum foldback. Other fea tures include: Thermal Shutdown, VCC under-voltage lockout, Gate drive under-voltage lockout, Max Duty Cycle limiter, and a pre-charge switch.

Features
■ Operating input voltage range: 6V to 95V
■ Integrated 100V, N-Channel buck switch
■ Internal start-up regulator
■ No loop compensation required
■ Ultra-Fast transient response
■ On time varies inversely with input voltage
■ Operating frequency remains constant with varying line
   voltage and load current
■ Adjustable output voltage from 2.5V
■ Highly efficient operation
■ Precision internal reference
■ Low bias current
■ Intelligent current limit
■ Thermal shutdown

Typical Applications
■ Non-Isolated Telecommunication Buck Regulator
■ Secondary High Voltage Post Regulator
■ +42V Automotive Systems


other parts : LM5009AMM  LM5009AMMX  LM5009ASD  LM5009ASDX  
LM5009A PDF
National-Semiconductor
National ->Texas Instruments
LM5009ASD 100V, 150 mA Constant On-Time Buck Switching Regulator

General Description
The LM5009A is a functional variant of the LM5009 COT Buck Switching Regulator. The functional differences of the LM5009A are: The minimum input operating voltage is 6 volts, the on-time equation is slightly different, and the requirement for a minimum load current is removed.
The LM5009A Step Down Switching Regulator features all of the functions needed to implement a low cost, efficient, Buck bias regulator. This high voltage regulator contains an 100 V N-Channel Buck Switch. The device is easy to implement and is provided in the MSOP-8 and the thermally enhanced LLP-8 packages. The regulator is based on a control scheme using an ON time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant. The control scheme requires no loop compensation. An intelligent current limit is implemented with forced OFF time, which is inversely proportional to Vout. This scheme ensures short circuit control while providing minimum foldback. Other fea tures include: Thermal Shutdown, VCC under-voltage lockout, Gate drive under-voltage lockout, Max Duty Cycle limiter, and a pre-charge switch.

Features
■ Operating input voltage range: 6V to 95V
■ Integrated 100V, N-Channel buck switch
■ Internal start-up regulator
■ No loop compensation required
■ Ultra-Fast transient response
■ On time varies inversely with input voltage
■ Operating frequency remains constant with varying line
   voltage and load current
■ Adjustable output voltage from 2.5V
■ Highly efficient operation
■ Precision internal reference
■ Low bias current
■ Intelligent current limit
■ Thermal shutdown

Typical Applications
■ Non-Isolated Telecommunication Buck Regulator
■ Secondary High Voltage Post Regulator
■ +42V Automotive Systems


other parts : LM5009A  LM5009AMM  LM5009AMMX  LM5009ASDX  
LM5009ASD PDF
National-Semiconductor
National ->Texas Instruments
LM5009AMM 100V, 150 mA Constant On-Time Buck Switching Regulator

General Description
The LM5009A is a functional variant of the LM5009 COT Buck Switching Regulator. The functional differences of the LM5009A are: The minimum input operating voltage is 6 volts, the on-time equation is slightly different, and the requirement for a minimum load current is removed.
The LM5009A Step Down Switching Regulator features all of the functions needed to implement a low cost, efficient, Buck bias regulator. This high voltage regulator contains an 100 V N-Channel Buck Switch. The device is easy to implement and is provided in the MSOP-8 and the thermally enhanced LLP-8 packages. The regulator is based on a control scheme using an ON time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant. The control scheme requires no loop compensation. An intelligent current limit is implemented with forced OFF time, which is inversely proportional to Vout. This scheme ensures short circuit control while providing minimum foldback. Other fea tures include: Thermal Shutdown, VCC under-voltage lockout, Gate drive under-voltage lockout, Max Duty Cycle limiter, and a pre-charge switch.

Features
■ Operating input voltage range: 6V to 95V
■ Integrated 100V, N-Channel buck switch
■ Internal start-up regulator
■ No loop compensation required
■ Ultra-Fast transient response
■ On time varies inversely with input voltage
■ Operating frequency remains constant with varying line
   voltage and load current
■ Adjustable output voltage from 2.5V
■ Highly efficient operation
■ Precision internal reference
■ Low bias current
■ Intelligent current limit
■ Thermal shutdown

Typical Applications
■ Non-Isolated Telecommunication Buck Regulator
■ Secondary High Voltage Post Regulator
■ +42V Automotive Systems


other parts : LM5009A  LM5009AMMX  LM5009ASD  LM5009ASDX  
LM5009AMM PDF
National-Semiconductor
National ->Texas Instruments
LM5009ASDX 100V, 150 mA Constant On-Time Buck Switching Regulator

General Description
The LM5009A is a functional variant of the LM5009 COT Buck Switching Regulator. The functional differences of the LM5009A are: The minimum input operating voltage is 6 volts, the on-time equation is slightly different, and the requirement for a minimum load current is removed.
The LM5009A Step Down Switching Regulator features all of the functions needed to implement a low cost, efficient, Buck bias regulator. This high voltage regulator contains an 100 V N-Channel Buck Switch. The device is easy to implement and is provided in the MSOP-8 and the thermally enhanced LLP-8 packages. The regulator is based on a control scheme using an ON time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant. The control scheme requires no loop compensation. An intelligent current limit is implemented with forced OFF time, which is inversely proportional to Vout. This scheme ensures short circuit control while providing minimum foldback. Other fea tures include: Thermal Shutdown, VCC under-voltage lockout, Gate drive under-voltage lockout, Max Duty Cycle limiter, and a pre-charge switch.

Features
■ Operating input voltage range: 6V to 95V
■ Integrated 100V, N-Channel buck switch
■ Internal start-up regulator
■ No loop compensation required
■ Ultra-Fast transient response
■ On time varies inversely with input voltage
■ Operating frequency remains constant with varying line
   voltage and load current
■ Adjustable output voltage from 2.5V
■ Highly efficient operation
■ Precision internal reference
■ Low bias current
■ Intelligent current limit
■ Thermal shutdown

Typical Applications
■ Non-Isolated Telecommunication Buck Regulator
■ Secondary High Voltage Post Regulator
■ +42V Automotive Systems


other parts : LM5009A  LM5009AMM  LM5009AMMX  LM5009ASD  
LM5009ASDX PDF
National-Semiconductor
National ->Texas Instruments
LM5009AMMX 100V, 150 mA Constant On-Time Buck Switching Regulator

General Description
The LM5009A is a functional variant of the LM5009 COT Buck Switching Regulator. The functional differences of the LM5009A are: The minimum input operating voltage is 6 volts, the on-time equation is slightly different, and the requirement for a minimum load current is removed.
The LM5009A Step Down Switching Regulator features all of the functions needed to implement a low cost, efficient, Buck bias regulator. This high voltage regulator contains an 100 V N-Channel Buck Switch. The device is easy to implement and is provided in the MSOP-8 and the thermally enhanced LLP-8 packages. The regulator is based on a control scheme using an ON time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant. The control scheme requires no loop compensation. An intelligent current limit is implemented with forced OFF time, which is inversely proportional to Vout. This scheme ensures short circuit control while providing minimum foldback. Other fea tures include: Thermal Shutdown, VCC under-voltage lockout, Gate drive under-voltage lockout, Max Duty Cycle limiter, and a pre-charge switch.

Features
■ Operating input voltage range: 6V to 95V
■ Integrated 100V, N-Channel buck switch
■ Internal start-up regulator
■ No loop compensation required
■ Ultra-Fast transient response
■ On time varies inversely with input voltage
■ Operating frequency remains constant with varying line
   voltage and load current
■ Adjustable output voltage from 2.5V
■ Highly efficient operation
■ Precision internal reference
■ Low bias current
■ Intelligent current limit
■ Thermal shutdown

Typical Applications
■ Non-Isolated Telecommunication Buck Regulator
■ Secondary High Voltage Post Regulator
■ +42V Automotive Systems


other parts : LM5009A  LM5009AMM  LM5009ASD  LM5009ASDX  
LM5009AMMX PDF

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