AT1367D Datasheet | Aimtron Technology

Features General Description - Operation Voltage 2.5V~6.0V The AT1367A/B/C/D provides plete - Oscillation frequency 1MHz control for a DC/DC converter optimized for - Output Current Maximum 800m A（DC-DC hight-performance microprocessor applications. It Converter） consists of a synchronous step-down DC/DC - Built-In 400m A/LDO converter and a high-speed LDO regulator - Power Good Indicator with Time Delay connected in series with the DC/DC converter Adjustable output. A power good detector and LDO ON/OFF - Built-In Current Limit control is also built-in(metal option). DC/DC - Built-In UVLO converter is operated on current mode architecture - Built-In Thermal Shut Down for excellent line and load transient response. - Built-In LDO ON/OFF Control（Metal Option） 1MHz operation frequency is allowing the use of small surface mount inductor and capacitor. The internal synchronous switch increases efficiency and eliminates the need for an external schottky diode. The AT1367A/B/C/D is a family of Applications low-noise synchronous step-down DC/DC - Power Supply for Slim Type devices converters that is ideally suited for systems powered form a 1-cell Li-ion battery or from a 3-cell to 4-cell Ni Cd, Ni MH, or alkaline battery. It can also be used to USB-based power system. Block Diagram VBG VBG Vref VREG UVLO VCC Current Sense AGND + SLOPE + R S SW Q OSC CTL Control LDO R5 DELAY Auto Discharge - CTL and /PG Metal Option PG UVLO /PG CTL Vref + VCC 0.9 x Vref 0.35u A - Shoot Throught PGND R2 R1 OUT1 Current Limit R3 + CTL + Vref - OUT2=2.5V/1.8V Metal Option Vref R4 OUT2 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 3/2/2006 REV:1.2 Email: service@aimtron..tw 1 AT1367A/B/C/D Preliminary Product Information 1MHz, 800m A Synchronous Buck Converter With Power Good Detector & LDO Pin...