DC-DC преобразователи интегральные LM22671MR-5.0/NOPB

Понижающий импульсный стабилизатор , фиксированный, 4.5В-42В (Vin), 5В и 0.5A на выходе, HSOP-8

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
• Adjustable soft start
• Operating temperature range from -40°C to 125°C

Области применения

Управление Питанием, Промышленное, Связь и Сеть