AT1526 Global Mixed-mode Technology 1MHz, All-Ceramic, 2A PWM Buck DC/DC Converter General Description Features The AT1526 high-efficiency, DC/DC buck converter delivers up to 2A of output current. The device operates from an input voltage of 2.5V to 6V and provides an output voltage from 0.8V to VIN, making the AT1526 ideal for on-board post-regulation applications. Ceramic Input and Output Capacitors Efficiency Up to 94% Guaranteed 2A Output Current Operate from 2.5V to 6V Supply Adjustable Output from 0.8V to VIN Internal Soft-Start Short-Circuit and Thermal-Overload Protection Input Over Voltage Protection RoHS Compliant The AT1526 operate at a fixed frequency of 1MHz with an efficiency of up to 94%. The high operating frequency minimizes the size of external components. Internal soft-start control circuitry reduces inrush current. Short-circuit and thermal-overload protections improve design reliability. Applications The AT1526 are available in a space-saving 8-pin SO package. ASIC/DSP/µP/FPGA Core and I/O Voltages Set-Top Boxes Cellular Base Stations Networking and Telecommunications Ordering Information ORDER NUMBER MARKING TEMP. RANGE PACKAGE ( Green) A1526 -40°C to +85°C SOP-8 AT1526P11U Note: P1:SOP-8 1: Bonding Code U: Tape & Reel Pin Configuration Typical Application Circuit Input 2.5V to 6V AT1526 VCC 1 8 VIN REF 2 7 LX 3 6 PGND FB 4 5 EN VIN LX VCC FB 7 Output 0.8V to VIN , Up to 2A 2.2µH CFB * (option) 10Ω 1 10µF GND AT1526 8 4 R1 0.1µF 5 ON OFF SOP-8 VOUT = 0.8V × ( 1+ REF EN PGND 6 R1 R2 2 22µF R2 GND 3 0.1µF ) TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.1 Dec 05, 2012 1 AT1527 Global Mixed-mode Technology 1MHz, All-Ceramic, 3A PWM Buck DC/DC Converter General Description Features The AT1527 high-efficiency, DC/DC buck converter delivers up to 3A of output current. The device operates from an input voltage of 2.5V to 6V and provides an output voltage from 0.8V to VIN, making the AT1527 ideal for on-board post-regulation applications. Ceramic Input and Output Capacitors Efficiency Up to 94% Operate from 2.5V to 6V supply Adjustable Output from 0.8V to VIN Internal Soft-Start Short-Circuit and Thermal-Overload Protection Input Over Voltage Protection RoHS Compliant The AT1527 operate at a fixed frequency of 1MHz with an efficiency of up to 94%. The high operating frequency minimizes the size of external components. Internal soft-start control circuitry reduces inrush current. Short-circuit and thermal-overload protections improve design reliability. Applications ASIC/DSP/µP/FPGA Core and I/O Voltages Set-Top Boxes Cellular Base Stations Networking and Telecommunications The AT1527 are available in a space-saving 8-pin SO package. Ordering Information ORDER NUMBER AT1527F11U Note: F1:SOP-8 (FD) 1: Bonding Code U: Tape & Reel MARKING TEMP. RANGE PACKAGE (Green) A1527 -40°C to +85°C SOP-8 (FD) Pin Configuration Typical Application Circuit A1527 AT1527 VCC 1 8 VIN REF 2 7 LX GND 3 6 PGND 8 VIN 5V VIN LX 7 2.2µH CFB * (option) 10Ω Thermal Pad 10µF 1 5 FB 4 5 EN ON OFF SOP-8 (FD) Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. VCC FB 0.1µF VOUT = 0.8V × ( 1+ EN PGND 6 R1 R2 REF GND 3 4 2 0.1µF R2 16k R1 50k VOUT 3.3V 22µF ) TEL: 886-3-5788833 http://www.gmt.com.tw Ver:1.1 Dec 05, 2012 1