MAX668 - 1.8V to 28V Input / PWM Step-Up Controllers

Name: MAX668
SKU: MAX668-443790

Maxim

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Datasheet Details

Part number	MAX668
Manufacturer	Maxim
File Size	693.84 KB
Description	1.8V to 28V Input / PWM Step-Up Controllers
Datasheet	MAX668_MaximIntegratedProducts.pdf

MAX668 Product details

Description

The MAX668/MAX669 constant-frequency, pulse-widthmodulating (PWM), current-mode DC-DC controllers are designed for a wide range of DC-DC conversion applications including step-up, SEPIC, flyback, and isolated-output configurations.

Features

low operating current (220μA), adjustable operating frequency (100kHz to 500kHz), soft-start, and a SYNC input allowing the MAX668/MAX669 oscillator to be locked to an external clock. DC-DC conversion efficiency is optimized with a low 100mV current-sense voltage as well as with Maxim’s proprietary Idle Mode™ control scheme. The controller operates in PWM mode at medium and heavy loads for lowest noise and optimum efficiency, then pulses only as needed (with reduced inductor current) to reduce o.

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Published: May 2, 2005 |