AT1314 Datasheet | Aimtron Technology

Feature ‧ 4.75V to 16V Supply Voltage Operating AT1314 is a voltage-mode PWM step-down DC-DC converter capable of driving up to 1A Range. over a wide input supply range with excellent ‧ 600KHz 15% Fixed Switching Frequency. loads line and load regulation characteristics. High ‧ Voltage-Mode PWM Step-Down Regulator. efficiency is obtained through the use of a low ‧ Built-in Power MOSFET, Rds(on) 100m . Rds(on) P-channel power switch. ‧ 1A Output Current, Up to 91.9% Efficiency It uses a fixed switching frequency up to 600KHz ‧ 0.4V 1.5% Internal Reference thus allowing smaller sized ponents. The ‧ Shutdown Current less than 20u A. output voltage level is user-programmable via an ‧ Thermal-Shutdown and Built-in Soft-Start. external resistive voltage divider. The built-in ‧ Cycle-by-Cycle Current-Limit Protection. soft-start can reduce inrush current on the input ‧ Under-Voltage Lockout Protection. source at turn on. ‧ Output Voltage Adjustable From 0.4V to 16V. The device also has built-in cycle-by-cycle ‧ SOP-8 Package. current-limit, thermal shutdown, under-voltage lockout and an ON/OFF logic-control that can Application power down the regulator to a shutdown mode. In ‧ Backlight for LCD Panels shutdown mode the regulator draws less than 20u A of supply current. ‧ Battery-Powered Backlight Applications ‧ Cell Phones AT1314 is available in SOP-8 package. ‧ PDAs ‧ Other Handheld Devices with Dual Displays. Description Block Diagram Regulator Current Sense Amplifier Current Sense + Contol Logic P-MOS OSC 600KHz PWM parator Error Amplifier + 0.4V Soft Start 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. Tel: 886-3-563-0878 Fax: 886-3-563-0879 : http://.aimtron..tw 3/24/2006 REV:2.0 Email: service@aimtron..tw Preliminary Product Information High-Efficiency Step-Down Current Regulator For LEDs Pin...