MIC2168AYMM Datasheet PDF - Micrel

●General Description

●The MIC2168A is a high-effi ciency, simple to use 1MHz PWM synchronous buck control IC housed in a small MSOP-10 package. The MIC2168A allows compact DC/DC solutions with a minimal external component count and cost.

●The MIC2168A 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 effi ciencies over 95% across a wide load range.

●Features

●• 3V to 14.5V input voltage range

●• Adjustable output voltage down to 0.8V

●• Up to 95% effi ciency

●• 1MHz PWM operation

●• Adjustable current-limit senses high-side N-Channel MOSFET current

●• No external current sense resistor

●• Adaptive gate drive increases effi ciency

●• 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 shutdown

●• 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