LM5000EP

·80V internal switch
· Operating input voltage range of 3.1V to 40V
·Pin selectable operating frequency
             300kHz/700kHz (-3)
             600kHz/1.3MHz (-6)
·Adjustable output voltage
·External compensation
·Input undervoltage lockout
·Softstart
·Current limit
·Over temperature protection
·External shutdown
·Small 16-Lead TSSOP or 16-Lead LLP package

VIN ......................................................................................-0.3V to 40V
SW Voltage .........................................................................-0.3V to 80V
FB Voltage .............................................................................-0.3V to 5V
COMP Voltage ........................................................................-0.3V to 3V
All Other Pins .........................................................................-0.3V to 7V
Maximum Junction Temperature ...................................................150°C
Power Dissipation(Note 5) ...........................................Internally Limited
Lead Temperature ........................................................................216°C
Infrared (15 sec.) .........................................................................235°C
ESD Susceptibility (Note 6)
Human Body Model ........................................................................... 2kV
Machine Model .................................................................................200V
Storage Temperature ................................................−65°C to +150°C

The LM5000EP is a monolithic integrated circuit specifically designed and optimized for flyback, boost or forward power converter applications. The internal power switch is rated for a maximum of 80V, with a current limit set to 2A. Protecting the power switch are current limit and thermal shutdown circuits. The current mode control scheme provides excellent rejection of line transients and cycle-by-cycle current limiting. An external compensation pin and the built-in slope compensation allow the user to optimize the frequency compensation. Other distinctive features include softstart to reduce stresses during start-up and an external shutdown pin for remote ON/OFF control. There are two operating frequency ranges available. The LM5000-3EP is pin selectable for either 300kHz (FS Grounded) or 700kHz (FS Open).

The LM5000-6EP is pin selectable for either 600kHz (FS Grounded) or 1.3MHz (FS Open). The device is available in a low profile 16-lead TSSOP package or a thermally enhanced 16-lead LLP package.