The LM22671MR-5.0/NOPB is a SIMPLE SWITCHER fixed output step down switching regulator with adjustable frequency in 8 pin HSOP (SO PowerPAD) package. This switching regulator provides all of the functions necessary to implement an efficient high voltage step down (buck) regulator using a minimum of external components. It provides excellent line and load regulation along with high efficiency (> 90%). Voltage mode control offers short minimum on-time allowing the widest ratio between input and output voltages. In addition, the frequency can be adjusted over a range of 200KHz to 1MHz with a single external resistor. The internal oscillator can be synchronized to a system clock or to the oscillator of another regulator. During shutdown mode, the regulator draws only 25μA typically.
Wide input voltage range from 4.5V to 42V
Stable with low ESR ceramic capacitors
200mohm N channel MOSFET
5V fixed output and 500mA load current
Built-in thermal shutdown and current limiting to protect against accidental overloads
500KHz default switching frequency
Precision enable pin and integrated boot strap diode
(EN)
