Monolithic Power Systems MP3418

Description

The MP3418 is a high+efficiency, synchronous, current–mode, step+up converter with output disconnect.The MP3418 can start up from an input voltage as low as 0.8V to provide inrush current limiting, and output short+circuit protection. The integrated, P+channel, synchronous rectifier improves efficiency and eliminates the need for an external Schottky diode. The PMOS disconnects the output from the input when the part shuts down. This output disconnect feature allows the output to be completely discharged, thus allowing the part to draw less than 12A in shutdown mode.The 1.2MHz switching frequency allows for smaller external components, while the internal compensation and the soft+start minimize the external component count: these feature help to produce a compact solution for a wide current load range.The MP3418 is available in a small 8+pin TSOT23 package.

Features

• Up to 96% Efficiency
• 0.8V Low Voltage Start+Up
• 0.6V+to+4V Input Range
• 1.8V+to+4V Output Range
• Internal Synchronous Rectifier
• 1.2MHz Fixed+Frequency Switching
• Typical 38<A Quiescent Current
• Typical 0.1<A Shutdown Current
• Current+Mode Control with Internal Compensation
• True Output Disconnect from Input
• VIN>VOUT Down Mode Operation
• High Efficiency under Light+Load Conditions
• Very Small External Components
• Inrush Current Limiting and Internal Soft-Start
• Over-Voltage Protection
• Short-Circuit Protection
• TSOT23+8 Package

Typical applications

• Portable Media Players
• Handheld Computers
• Personal Medical Devices
• Smartphones
• Battery+Powered Products
• Wireless Peripherals

More information

• Datasheet
• IC product information