-40°C to 125°C operating junction temperature range
•
Precision enable pin
•
Integrated boot diode
•
Integrated soft-start
•
Fully WEBENCH
® enabled
•
Step-down and inverting buck-boost applications
General Description
The LM22675 series of regulators are monolithic integrated circuits which provide all of the active functions for a step-down
(buck) switching regulator capable of driving up to 1A loads with excellent line and load regulation characteristics. More...
The LM22675 series of regulators are monolithic integrated circuits which provide all of the active functions for a step-down
(buck) switching regulator capable of driving up to 1A loads with excellent line and load regulation characteristics. High
efficiency (>90%) is obtained through the use of a low ON-resistance N-channel MOSFET. The series consists of a fixed 5V output
and an adjustable version.
The SIMPLE SWITCHER
® concept provides for an easy to use complete design using a minimum number of external components and National’s WEBENCH
® design tool. National’s WEBENCH
® tool includes features such as external component calculation, electrical simulation, thermal simulation, and Build-It boards
for easy design-in. The switching clock frequency is provided by an internal fixed frequency oscillator which operates at
500 kHz. The LM22675 series also has built in thermal shutdown, current limiting and an enable control input that can power
down the regulator to a low 25 µA quiescent current standby condition.
RoHS Compliance Information
