LM2695,pdf datasheet (High Voltage Step Down Switching)

The LM2695 Step Down Switching Regulator features all of
the functions needed to implement a low cost, efficient, buck
bias regulator capable of supplying 1.25A to the load. This
buck regulator contains a 33V N-Channel Buck Switch, and
is available in the thermally enhanced LLP-10 and TSSOP-
14EP packages. The hysteretic regulation scheme requires
no loop compensation, results in fast load transient response,
and simplifies 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 current limit detection is set at 1.25A. Additional
features include: VCC under-voltage lockout, thermal shutdown,
gate drive under-voltage lockout, and maximum duty
cycle limiter.