AT1530 Global Mixed-mode Technology 1MHz, All-Ceramic, 3.2A PWM Buck DC/DC Converter General Description Features The AT1530 high-efficiency, DC/DC buck converter delivers up to 3.2A 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 AT1530 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 AT1530 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. Output under-voltage lockout, short-circuit and over-temperature protections improve design reliability. Applications ASIC/DSP/µP/FPGA Core and I/O Voltages Set-Top Boxes Cellular Base Stations Networking and Telecommunications The AT1530 are available in a space-saving SOP-8 and TDFN3X3-8 package. Ordering Information ORDER NUMBER AT1530F11U AT1530RD1U Note: F1: SOP-8 (FD) 1: Bonding Code U: Tape & Reel MARKING TEMP. RANGE PACKAGE (Green) A1530 A1530 -40°C to +85°C -40°C to +85°C SOP-8 (FD) TDFN3X3-8 RD: TDFN3X3-8 Pin Configuration Typical Application Circuit AT1530 AT1530 AT1530 VCC 1 8 VIN REF 2 7 LX GND 3 FB 4 Thermal Pad SOP-8 (FD) 6 PGND 5 EN VCC 1 REF 2 GND 3 FB 4 Thermal Pad VIN 5V 8 VIN 7 LX 6 PGND 5 EN 8 VIN LX 7 2.2µH CFB * (option) 10Ω 10µF 1 VCC FB 0.1µF 5 ON OFF EN PGND 6 REF GND 3 4 2 0.1µF R2 16k R1 50k VOUT 3.3V 22µF TDFN3X3-8 VOUT = 0.8V × (1+ Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. R1 ) R2 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.1 Dec 05, 2012 1