Monolithic Power Systems MP2187

Description

The MP2187 is a monolithic, step-down, switch-mode dual converter with internal power MOSFETs. It can achieve up to 3A continuous output current from a 2.5V–to-5.5V input voltage with excellent load and line regulation.

The output voltages of two channels are 1.1V and 1.8V respectively.

The constant-on-time control scheme provides fast transient response and eases loop stabilization. Fault condition protections include cycle-by-cycle current limiting, input voltage failure indicator and thermal shutdown.

The MP2187 is available in small 2.2mmx2.6mm QFN16 package and requires only a minimal number of readily available standard external components.

The MP2187 is ideal for a wide range of applications including high-performance DSPs, FPGAs, smart phones, portable instruments, and DVD drivers.

Features

• -Wide 2.5V-to-5.5V Operating Input Range
• -Fixed Output Voltages: 1.1V & 1.8V
• -100% Duty Cycle in Dropout
• -Up to 3A Output Current
• -Low IQ: 80µA
• -60mΩ and 30mΩ Internal Power MOSFET Switches
• -Input Voltage Failure Indicator
• -Default 1.2MHz Switching Frequency
• -EN and Power-Good for Power Sequencing
• -Cycle-by-Cycle Over-Current Protection
• -Auto Discharge at Power-Off
• -Short-Circuit Protect with Hiccup Mode
• -Stable with Low-ESR Output Ceramic Capacitors
• -Available in a 2.2mm x 2.6mm QFN16 Package

Typical applications

• •Low Voltage I/O System Power
• •Wireless/Networking Cards
• •Handheld/Battery-powered Systems

More information

• Datasheet
• IC product information