Maxim MAX6683AUB+

温度监视系统（传感器）-40°C ~ 125°C-40°C ~ 125°C

Overview

The MAX668/MAX669 constant-frequency, pulse-width modulating (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. Power levels of 20W or more can be controlled with conversion efficiencies of over 90%. The 1.8V to 28V input voltage range supports a wide range of battery and AC-powered inputs. An advanced BiCMOS design 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 operating current and maximize efficiency under light loads. A logic-level shutdown input is also included, reducing supply current to 3.5μA. The MAX669, optimized for low input voltages with a guaranteed start-up voltage of 1.8V, requires boot-strapped operation (IC powered from boosted output). It supports output voltages up to 28V. The MAX6683AUB operates with inputs as low as 3V and can be connected in either a bootstrapped or non-bootstrapped (IC powered from input supply or other source) configuration. When not bootstrapped, it has no restriction on output voltage. Both ICs are available in an extremely compact 10-pin μMAX package.

Features

Tube Package
Available in the 10-TFSOP, 10-MSOP (0.118, 3.00mm Width) package
POWER SUPPLY SUPPORT CIRCUIT as analog IC type
Peak reflow temperature (Cel) of 260
Operating supply voltage of 5.5V
Operating supply current of 200μA

Surface Mount Mounting Type

Applications

There are a lot of Maxim Integrated
MAX6683AUB+ applications of thermal management.

• PCs and Notebooks
• Data Storage
• Data Communications Equipment
• Instrumentation
• Workstations
• Servers
• Networking
• Telecommunications
• Desktop Computers
• Notebook Computers