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Technical content

Features

„ 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

Applications

„ ASIC/DSP/µP/FPGA Core and I/O Voltages „ Set-Top Boxes „ Cellular Base Stations „ Networking and Telecommunications General Description The AT1526 high-efficiency, DC/DC buck converter delivers up to 2A of output current. The device oper- ates from an input voltage of 2.5V to 6V and provides an output voltage from 0.8V to V IN, making the AT1526 ideal for on-board post-regulation applications. The AT1526 operate at a fixed frequency of 1MHz with an efficiency of up to 94%. The high operating fre- quency minimizes the size of external components. Internal soft-start control circuitry reduces inrush cur- rent. Short-circuit and thermal-overload protections improve design reliability. The AT1526 are available in a space-saving 8-pin SO package.

Ordering Information

NUMBER MARKING TEMP. RANGE PACKAGE ( Green) AT1526P11U A1526 -40 °C to +85°C SOP-8 Note: P1:SOP-8 1: Bonding Code U: Tape & Reel Pin Configuration Typical Application Circuit VIN LX EN REF GND AT1526 FB GND VCC REF VIN SOP-8 AT1526 7 LX EN PGND VCC OFFON PGND Input 2.5V to 6V Output 0.8V to VIN , Up to 2A FB CFB * (option) 10µF 10Ω 0.1µF 0.1µF 2.2µH 22µF VOUT = 0.8V × ( 1+ )R1 6 3 VIN LX EN REF GND AT1526 FB GND VCC REF VIN SOP-8 AT1526 7 LX EN PGND VCC OFFON PGND Input 2.5V to 6V Output 0.8V to VIN , Up to 2A FB CFB * (option) 10µF 10Ω 0.1µF 0.1µF 2.2µH 22µF VOUT = 0.8V × ( 1+ )R1 6 3

Ver:1.1 Dec 05, 2012 TEL: 886-3-5788833 http://www.gmt.com.tw AT1527Global Mixed-mode Technology 1MHz, All-Ceramic, 3A PWM Buck DC/DC Converter „ 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 „ ASIC/DSP/µP/FPGA Core and I/O Voltages „ Set-Top Boxes „ Cellular Base Stations „ Networking and Telecommunications General Description 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 V IN, making the AT1527 ideal for on-board post-regulation applications. The AT1527 operate at a fixed frequency of 1MHz with an efficiency of up to 94%. The high operating fre- quency minimizes the size of external components. Internal soft-start control circuitry reduces inrush cur- rent. Short-circuit and thermal-overload protections improve design reliability. The AT1527 are available in a space-saving 8-pin SO package. NUMBER MARKING TEMP. RANGE PACKAGE (Green) AT1527F11U A1527 -40 °C to +85°C SOP-8 (FD) Note: F1:SOP-8 (FD) 1: Bonding Code U: Tape & Reel Pin Configuration Typical Application Circuit VOUT 3.3VVIN LX EN REF GND A1527 FB GND VCC REF VIN SOP-8 (FD) AT1527 7 LX EN PGND VCC OFFON PGND VIN FB VOUT = 0.8V × ( 1+ )R1 2.2µH 10µF 10Ω 0.1µF 0.1µF 22µF CFB 50k 16k * (option) Thermal Pad Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.

7 VOUT

3.3VVIN LX EN REF GND A1527 FB GND VCC REF VIN SOP-8 (FD) AT1527 7 LX EN PGND VCC OFFON PGND VIN FB VOUT = 0.8V × ( 1+ )R1 2.2µH 10µF 10Ω 0.1µF 0.1µF 22µF CFB 50k 16k * (option) 22µF CFB 50k 16k * (option) Thermal Pad Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.