1A, Synchronous, Step-Down DC-DC with Soft Start Control & Power Good Signal
The MP2181 from Monolithic Power Systems is a monolithic, step-down, dc-dc converter with built-in internal power MOSFETs. It achieves 1A continuous output current from a 2.5V to 5.5V input voltage with excellent load and line regulation. The output voltage can be regulated to as low as 0.6V.
The constant-on-time (COT) control scheme provides fast transient response and eases loop stabilization. Fault protections include cycle-by-cycle current limiting and thermal shutdown.
The MP2181 is available in an ultra-small SOT583 package, and requires a minimal number of readily available, standard external components.
The MP2181 is ideal for a wide range of applications including high-performance DSPs, wireless power, portable and mobile devices, and other low-power systems.
Product Features
- Low IQ: 21μA
- 2MHz Switching Frequency
- EN for Power Sequencing
- 1% FB Accuracy
- Wide 2.5V to 5.5V Operating Input Range
- Output Adjustable from 0.6V
- Up to 1A Output Current
- 90mΩ and 50mΩ Internal Power MOSFET Switches
- 100% Duty On
- Output Discharge
- VO OVP
- External Soft-Start Control
- Short-Circuit Protection with Hiccup Mode
- Power Good
- Available in a SOT583 Package
