A Product Line of Diodes Incorporated PAM2401 1.0MHz STEP-UP DC-DC CONVERTER Description Pin Assignments The PAM2401 is a high efficiency, current mode, fixed frequency, step-up DC/DC converter with true output disconnect and inrush current limiting. The device includes one 0.10 N-channel MOSFET switch and one 0.15 P-channel synchronous rectifier. This product has the ability to simply program the output voltage from 2.5V to 5.0V.The switching frequency is 1.0MHz, programmable current limit set by an external resistor from 1.0A to 3.0A with internal soft-start. When loading became light, the converter will automatically enter into PSM to improve the efficiency. Quiescent current is only 150A during Pulse Skip Mode operation, maximizing battery life in portable applications. Other features include : <1A shutdown, anti-ringing control, Hiccup mode at short protection, over voltage protection and over temperature protection. The PAM2401 is available in MSOP-8 and U-DFN3030-12 packages Features Up to 95% Efficiency True Output Disconnect Inrush Current Limiting When Power On Output Current up to 1000mA at V = 3V and V = 5.0V IN OUT Fixed Frequency Operation Up to 1MHz 0.9V to 4.75V Input Range 2.5V to 5.0V Adjustable Output Voltage Applications Guaranteed 1.0V Start-Up Programmable Current Limit Handheld Computers Internal Soft-Start Cordless Phones Internal Compensation GPS Receivers Pulse Sipping Mode at Light Load Operation Battery Backup Supplies Hiccup Mode Short Protection Over Voltage Protection Over Temperature Protection <1A Shutdown Current Power Good Indicator MSOP-8 and U-DFN3030-12 packages Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See A Product Line of Diodes Incorporated PAM2401 Typical Applications Circuit Pin Descriptions MSOP-8 U-DFN3030-12 Name Function 1 1,2 LX Switch Pin 2 3 EN Enables Control Input. 3 4 VIN Input Voltage Pin -- 5 PG Power Good Indicator Pin, Open Drain Output 4 6 AGND Analog Ground 5 7 FB Feedback Pin Internally Set to 0.6V. 6 8 RSET Current Limit Setting 7 9,10 OUT Output Pin 8 11,12 PGND Power Ground Exposed Pad EP Thermal Pad of the Package. Can Be Connected to PGND Functional Block Diagram 2 of 10 May 2014 PAM2401 Diodes Incorporated www.diodes.com Document number: DS37285 Rev. 1 - 2 NEW PRODUCT