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ER3105DI - Synchronous Buck Regulator

Description

The SS pin controls the soft-start ramp time of the output.

A single capacitor from the SS pin to ground determines the output ramp rate.

Features

  • a PFM mode for improved efficiency at light loads. This feature can be disabled if forced PWM mode is desired. The part switches at a default frequency of 500kHz but may also be programmed using an external resistor from 300kHz to 2MHz. The ER3105DI has the ability to utilize internal or external compensation. By integrating both NMOS devices and providing internal configuration options, minimal external components are required, reducing BOM count and complexity of design. With the wide VIN rang.

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Datasheet Details

Part number ER3105DI
Manufacturer Altera
File Size 1.30 MB
Description Synchronous Buck Regulator
Datasheet download datasheet ER3105DI Datasheet

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Full PDF Text Transcription

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Enpirion® Power Datasheet ER3105DI 500mA Wide VIN Synchronous Buck Regulator DS-1041 Datasheet The Altera® Enpirion® ER3105DI is a 500mA Synchronous buck regulator with an input range of 3V to 36V. It provides an easy to use, high efficiency low BOM count solution for a variety of applications. The ER3105DI integrates both high-side and low-side NMOS FET's and features a PFM mode for improved efficiency at light loads. This feature can be disabled if forced PWM mode is desired. The part switches at a default frequency of 500kHz but may also be programmed using an external resistor from 300kHz to 2MHz. The ER3105DI has the ability to utilize internal or external compensation.
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