EP4001 datasheet(6/10 Pages) EOREX

No. de pieza	EP4001

Descripción Electrónicos	High Efficiency, Step-Up Converter with EXT

PDF	10 Pages

Scroll/Zoom	100%

Fabricante Electrónico	EOREX [Eorex Corporation]

Página de inicio	http://www.eorex.com

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6 / 10 page

eorex

EP4001

Aug. 2006

www.eorex.com

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Functional Block Diagram

Figure 3-EP4001 Functional Block Diagram

Operation

The EP4001 is a current mode PWM boost converter with a fixed switching frequency at 450KHz. It is

able to operate from an input voltage below 1V. With its low RDS(ON) internal MOSFET switch, this device

maintains the high efficiency over a wide range of load current.

Low Voltage Start-Up

The EP4001 will start up with a typical VIN voltage at 1V. The low voltage start-up circuitry controls the

internal NMOS switch allowing the devices to start up into an output load. Once VOUT exceeds 1.8V, the

start-up circuitry is disabled and normal fixed frequency PWM operation is initiated. In this mode, the

EP4001 operates independent of VIN. The limiting factor for the application becomes the ability of the

battery to supply sufficient energy to the output. Low Noise Fixed Frequency Operation Oscillator: The

frequency of operation is internally set to 450KHz.

EP4001 Datasheet(PDF) 6 Page - Eorex Corporation