Monolithic Power Systems MP2161A

Description

The EV2161A-J-00A is used for demonstrating the performance of MPS’s MP2161A, a low voltage high switching frequency step-down switcher with built in power MOSFETs. MP2161A provides up to 2A highly efficientoutput with constant-on-time control for fast loop response.

MP2161A is ideal for powering portable equipment that runs from a single cell Lithiumion (Li+) Battery. The output voltage can beregulated as low as 0.6V.

High power efficiency over a wide load range is achieved by scaling down the switching frequency at light load to reduce the switchingrelated loss by constant on time control. Short circuit and thermal shutdown provides reliable, fault-tolerant operation.

MP2161A is available in TSOT23-8 package

Features

• Very Low IQ: 17μA
• Default 1.5MHz Switching Frequency
• 1.5% VFB Accuracy EN and Power Good for Power Sequencing
• Wide 2.5V to 6V Operating Input Range Output Adjustable from 0.6V
• Up to 2A Output Current
• 100% Duty Cycle in Dropout
• 110mΩ and 60mΩ Internal Power MOSFET Switches
• Cycle-by-Cycle Over Current Protection
• Short Circuit Protect with Hiccup Mode
• Stable with Low ESR Output Ceramic Capacitors
• Available in a TSOT23-8 Package

Typical applications

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