NOT RECOMMENDED FOR NEW DESIGN USE AP7176B PAM3131 3A ADJUSTABLE LOW VOLTAGE LOW DROPOUT CMOS REGULATOR Description Pin Assignments The PAM3131 is a 3A CMOS adjustable LDO regulator that features a low quiescent current, ultra low input, output, and dropout voltages, as well as over temperature protection. It is available in TO-263 and PSOP-8 (Exposed Pad) packages. The output voltage is adjustable from 0.9V to 3.3V. The PAM3131 is stable with a ceramic output capacitor of 1.0F or higher. This family of regulators can provide either a stand alone power supply solution or act as a post regulator for switch mode power supplies. They are particularly well suited for applications requiring low input and output voltages. Features Low-Dropout Regulator Supports Input Voltages Down to 1.4V Low Dropout Voltage: 300mV 3A Output Voltage Adjustable from 0.9V-3.3V Stable with a Ceramic Output Capacitor of 1.0F or Higher Low Quiescent Current Current Limit Over Temperature Shutdown Short Circuit Current Protection Low Temperature Coefficient Standard TO-263 and PSOP-8 (Exposed Pad) Packages Pb-Free Package Applications DSP, FPGA, and Microprocessor Power Supplies 1.2V Core Voltage for DSPs SATA Power Supply LCD TV/ Monitors Wireless Devices Communication Devices Portable Electronics Post Regulator for SMPS Typical Applications Circuit 1 of 14 PAM3131 August 2017 Diodes Incorporated www.diodes.com Document number: DS36425 Rev. 2 - 3 NOT RECOMMENDED FOR NEW DESIGN USE AP7176B PAM3131 Pin Description Pin Number Pin Name Function TO263-5L PSOP-8(EPD) VIN 1 2 Input EN 2 3 Enable Pin ADJ 4 6 Adjustable Pin 5 7 Output VOUT GND 3 1, 4, 8 Ground PWRGD 5 Power Good Functional Block Diagram Absolute Maximum Ratings ( T = +25C, unless otherwise specified.) A These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. All voltages are with respect to ground. Parameter Rating Unit Input Voltage 4.0 V Output Pin Voltage -0.3 to V +0.3 V IN Operation Temperature Range -40 to +85 C Operation Junction Range -40 to +125 C Maximum Output Current P /(V V ) D IN O Storage Temperature -65 to +150 C Maximum Junction Temperature 150 C Soldering Temperature 300, (5sec) C 2 of 14 PAM3131 August 2017 Diodes Incorporated www.diodes.com Document number: DS36425 Rev. 2 - 3