LM5010,pdf datasheet (High Vol

The LM5010 Step Down Switching Regulat orfeatures all the
func tions needed to implement a low cost, eff icient, buck
bias regulator capable of supplying in excess of 1A lo ad
current. This high voltage regulator cont ains an N-Channel
Buck Switch, and is available in 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 inve rse 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
lockout, thermal shutdown, gate drive under-voltage lockout,
and maximum duty cycle limi ter.