LM5007MM/NOPB (TEXAS INSTRUMENTS)

The LM5007MM/NOPB is a step-down Switching Regulator features all of the functions needed to implement efficient, buck bias regulators. This high voltage regulator contains an 80V/0.7A N-channel buck switch. The regulator is based on a hysteretic control scheme using an on time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant with load and input voltage variations. The hysteretic control requires no control loop compensation, while providing very fast load transient response. An intelligent current limit is implemented in the LM5007 with forced off time that is inversely proportional to VOUT. This current limiting scheme reduces load current foldback. Additional protection features include thermal shutdown, VCC undervoltage lockout, gate drive undervoltage lockout and maximum duty cycle limiter.