General Description

The MIC2168 is a high-efficiency, simple to use 1MHz PWM synchronous buck control IC housed in a small MSOP-10 package. The MIC2168 allows compact DC/DC solutions with a minimal external component count and cost. The MIC2168 operates from a 3V to 14.5V input, without the need of any additional bias voltage. The output voltage can be precisely regulated down to 0.8V. The adaptive all N-Channel MOSFET drive scheme allows efficiencies over 95 across a wide load range.

特性 Features

? 3V to 14.5V input voltage range

? Adjustable output voltage down to 0.8V

? Up to 95 efficiency

? 1MHz PWM operation

? Adjustable current-limit senses high-side N-Channel MOSFET current

? No external current sense resistor

? Adaptive gate drive increases efficiency

? Ultra-fast response with hysteretic transient recovery mode

? Overvoltage protection protects the load in fault conditions

? Dual mode current limit speeds up recovery time

? Hiccup mode short-circuit protection

? Internal soft-start

? Dual function COMP and EN pin allows low-power shut down

? Small size MSOP 10-lead package

Applications

? Point-of-load DC/DC conversion

? Set-top boxes

? Graphic cards

? LCD power supplies

? Telecom power supplies

? Networking power supplies

? Cable modems and routers