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EC9202-200mA Converter With High Eff. & Low Noise

General description

The EC9202 is a compact PFM step-up DC/DC converter that operates from an input voltage as low as 0.8 Volt. The low start-up input voltage makes EC9202 specially designed for portable devices from one or two cell battery, delivering up to 200mA load current at VIN=1.8V VOUT=3.3V. Typical efficiency for EC9202 is 85% when VIN>=2.0V VOUT=3.3V ILOAD=1~60mA. Potential applications include low powered consumer products and battery powered portable products.

The EC9202  features a band gap reference, trimming technology, current -limited, PFM control scheme which combines the advantages of PWM ( higher output power and efficiency) and those of traditional PFM (ultra-low quiescent current). The internal 0.6 ohm low turn-on resistance NMOS power switch provides stable and high-efficiency operation over a board load current range.

The EC9202 devices are available in SOT23-3,SOT23-5& SOT89 package.

Features

 0.8V Low Start-up Input Voltage at 1mA Load

 Operating Voltage Range+0.8V to +5.5V

 Output Voltages+1.8V to +5.0V with 100mV

 Deliver 200mA at 3.3V Output with 1.8V Input

 85% High Efficiency (VIN=2.0V,VOUT=3.3V, ILOAD=60mA)

 ± 2% Output Voltage Accuracy

 4µA Low Switch-Off Supply Current

 0.5µA Low Shutdown Supply Current

 SOT-23, SOT-25 & SOT-89 Package

 RoHS Compliant and 100% Lead (Pb)-Free and

     Green (Halogen Free with Commercial Standard)

Applications

 PDA

 DSC

 MP3 Player

 Electronic Games

 Camcorders

 Portable Devices

 Single-and Dual-Cell Battery Operated Products

Pin Configurations

Ordering info

Typical Applications circuit

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