HomedatasheetLM2621M

LM2621M Datasheet

DC/DC Switching Controllers
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Description

The LM2621 is a high efficiency, step-up DC-DC switching regulator for battery-powered and low input voltagesystems. It accepts an input voltage between 1.2V and 14V and converts it into a regulated output voltage. Theoutput voltage can be adjusted between 1.24V and 14V. It has an internal 0.17&Omega; N-Channel MOSFET powerswitch. Efficiencies up to 90% are achievable using the LM2621.The high switching frequency (adjustable up to 2MHz) of the LM2621 allows for tiny surface mount inductors andcapacitors. Because of the unique constant-duty-cycle gated oscillator topology very high efficiencies are realizedover a wide load range. The supply current is reduced to 80&mu;A because of the BiCMOS process technology. Inthe shutdown mode, the supply current is less than 2.5&mu;A.The LM2621 is available in a Mini-SO-8 package. This package uses half the board area of a standard 8-pin SOand has a height of just 1.09 mm. LM2621M Features &bull; Small Mini-SO8 Package (Half the Footprint ofStandard 8-Pin SO Package)&bull; 1.09 mm Package Height&bull; Up to 2 MHz Switching Frequency&bull; 1.2V to 14V Input Voltage&bull; 1.24V - 14V Adjustable Output Voltage&bull; Up to 1A Load Current&bull; 0.17 &Omega; Internal MOSFET&bull; Up to 90% Regulator Efficiency&bull; 80 &mu;A Typical Operating Current&bull; <2.5&mu;A Guaranteed Supply Current InShutdown LM2621M Applications &bull; PDAs, Cellular Phones&bull; 2-Cell and 3-Cell Battery-Operated Equipment&bull; PCMCIA Cards, Memory Cards&bull; Flash Memory Programming&bull; TFT/LCD Applications&bull; 3.3V to 5.0V Conversion&bull; GPS Devices&bull; Two-Way Pagers&bull; Palmtop Computers&bull; Hand-Held Instruments
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Parameters

[{"Name":"Input Voltage: ","Value":"1.2 V to 14 V "},{"Name":"Switching Frequency: ","Value":"2 MHz "},{"Name":"Output Voltage: ","Value":"1.24 V to 14 V "},{"Name":"Output Current: ","Value":"1 A "},{"Name":"Number of Outputs: ","Value":"1 "},{"Name":"Maximum Operating Temperature: ","Value":"+ 85 C "},{"Name":"Minimum Operating Temperature: ","Value":"- 40 C "},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""}]

Manufacturer information

ON SEMICONDUCTOR

ON Semiconductor - ON Semiconductor (Nasdaq: ON) is driving energy efficient innovations, empowering customers to reduce global energy use. The company offers a comprehensive portfolio of energy efficient power and signal management, logic, discrete and custom solutions to help design engineers solve their unique design challenges in automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace and power supply applications. ON Semiconductor operates a responsive, reliable, world-class supply chain and quality program, and a network of manufacturing facilities, sales offices and design centers in key markets throughout North America, Europe, and the Asia Pacific regions.

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