Monolithic Power Systems MP2158

Description

The MP2158 is a monolithic step-down switch mode converter with built-in internal power MOSFETs. It achieves 1A continuous output current from a 2.5V to 6V input voltage with excellent load and line regulation. The outputvoltage can be regulated as low as 0.6V.

The Constant-On-Time control scheme provides fast transient response and eases loop stabilization. Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown.

The MP2158 is available in the small QFN8 2.0x1.5mm package and requires a minimum number of readily available standard external components.

The MP2158 is ideal for a wide range of applications including High Performance DSPs, FPGAs, PDAs, and portable instruments.

Features

• Very Low IQ: 17μA
• Default 1.5MHz Switching Frequency
• EN and Power Good for Power Sequencing
• Ultra-small 2.0x1.5mm QFN8 Package
• Wide 2.5V to 6V Operating Input Range Output Adjustable from 0.6V
• Up to 1A Output Current
• 118mΩ and 88mΩ Internal Power MOSFET Switches
• Cycle-by-Cycle Over Current Protection
• Short Circuit Protect with Hiccup Mode
• Stable with Low ESR Output Ceramic Capacitors

Typical applications

• Low Voltage I/O System Power
• Battery Powered Devices
• Wireless Cards
• Portable Instruments
• Networking Cards

More information

• Datasheet
• IC product information