Micrel MIC2182BM

Step-DownБак4,5 В ~ 32 В

Overview

Micrel’s MIC2182BM is a synchronous buck (step-down) switching regulator controller. An all N-channel synchronous architecture and powerful output drivers allow up to a 20A output current capabilty. The PWM and skip-mode control scheme allows efficiency to exceed 95% over a wide range of load current, making it ideal for battery powered applications, as well as high current distributed power supplies.

Features • 4.5V to 32V Input voltage range • 1.25V to 6V Output voltage range • 95% efficiency • 300kHz oscillator frequency • Current sense blanking • 5Ω impedance MOSFET Drivers • Drives N-channel MOSFETs • 600µA typical quiescent current (skip-mode) • Logic controlled micropower shutdown (IQ < 0.1µA) • Current-mode control • Cycle-by-cycle current limiting • Built-in undervoltage protection • Adjustable undervoltage lockout • Easily synchronizable • Precision 1.245V reference output • 0.6% total regulation • 16-pin SOP and SSOP packages • Frequency foldback overcurrent protection • Sustained short-circuit protection at any input voltage • 20A output current capability Applications • DC power distribution systems • Notebook and subnotebook computers • PDAs and mobile communicators • Wireless modems • Battery-operated equipment

Features

Applications

• Servo drive system
• Digital display device
• Linear guide
• Ball screw pair
• Computer application technology
• Network technology
• Automation technology
• CMM
• Various precision measuring instruments
• Various precision measuring detectors