LM5010A

VIN to RTN................................................... -0.3V to 76V
BST to RTN ...................................................-0.3V to 90V
SW to RTN (Steady State)...................................... -1.5V
BST to VCC ................................................................76V
BST to SW .................................................................14V
VCC to RTN ..................................................-0.3V to 14V
SGND to RTN .............................................-0.3V to +0.3V
SS to RTN .......................................................-0.3V to 4V
VIN to SW ..................................................................76V
All Other Inputs to RTN................................... -0.3V to 7V
ESD Rating (Note 2)
  Human Body Model ..................................................2kV
Storage Temperature Range .................-65°C to +150°C
Lead Temperature (Soldering 4 sec) (Note 4) ........260°C

The LM5010A Step Down Switching Regulator is an enhanced version of the LM5010 with the input operating range extended to 6V minimum. The LM5010A features all the functions needed to implement a low cost, efficient, buck regulator capable of supplying in excess of 1A load current. This high voltage regulator integrates an N-Channel Buck Switch, and is available in thermally enhanced LLP-10 and TSSOP-14EP packages. The constant on-time regulation scheme requires no loop compensation resulting in fast load transient response and simplified circuit implementation. The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The valley current limit detection is set at 1.25A. Additional features include: VCC under-voltage lock-out, thermal shutdown, gate drive under-voltage lockout, and maximum duty cycle limiter.