Aimtron Technology AT1793
AT1793 is a voltage-mode PWM step-down controller capable of driving loads over a wide input supply range with excellent line and load regulation characteristics. It uses a fixed switching frequency up to 1MHz thus allowing smaller sized components. The output voltage level is user-programmable via an external resistive voltage divider.FEATURES
● 4.75V to 26V supply voltage operating.● Efficiency up to 85%.
● Typical frequency operation to 1MHz.
● Voltage-mode PWM step-down regulation.
● 1V±2% internal reference.
● Shutdown current less than 30uA.
● Soft-start built-in.
● Short-circuit protection build-in
● QFN-16 & SOP-14 package.
APPLICATIONS
●DC-DC power management.GENERAL DESCRIPTION
High efficiency is obtained through the use of a low Rds(on) P-channel power switch. The built-in soft-start can reduce inrush current on the input source at turn on. The built-in short-circuit protection can prevent from a short-circuit. The AT1793 also has built-in 2 control pins that can power down the regulator to a shutdown mode. In shutdown mode the regulator draws less than 30uA of supply current AT1793 is available in QFN-16 or SOP-14 package. Block Diagram Aimtron reserves the right without notice to change this circuitry and specifications. 7F, NO.9, Park Avenue II, Science-Based Industrial Park, Hsinchu 300, Taiwan, R.O.C.