P1583

UNISONIC TECHNOLOGIES CO., LTD P1583 LINEAR INTEGRATED CIRCUIT 380KHz, 2.5A STEP-DOWN SWITCHING REGULATOR  DESCRIPTION The UTC P1583 is a fixed 380kHz frequency, current mode, PWM controller. It achieves 2.5A continuous output current over a wide input supply range with excellent load and line regulation. Equipped with an external compensation pin, this device offers user flexibility in determining loop dynamic. The UTC P1583 integrates controls, monitoring and protection functions into a single 8-pin package to provide a low cost and perfect power solution. The device provides maximum 24V operating input voltage. An internal 1.245V reference provides low output voltage down to 1.245V for further applications. An internal soft-start prevents the output voltage from overshoot as well as limiting the input current. The controller’s over-current protection monitors the output current by using the voltage drop across a current sensing resistor. Additional under voltage protections monitor the voltage on FB pin for short-circuit protections. The UTC P1583 provides fast transient respond and requires very few external devices for operation.  FEATURES * 2.5A output current * 380kHz frequency of operation * 15μA shutdown supply current * Output adjustable from 1.245 to 21V * Frequency foldback at short circuit * Thermal shutdown  ORDERING INFORMATION Ordering Number Lead Free Halogen Free P1583L-SH2-R P1583G-SH2-R Package HSOP-8 Packing Tape Reel www.unisonic.com.tw ...