Monolithic Power Systems (MPS) - MPQ2166

The MPQ2166 is an internally compensated, dual, PWM, synchronous, step-down regulator that operates from a 2.7V to 6V input and generates an output voltage as low as 0.6V. The MPQ2166 can be configured as a 2A/2A or 3A/1A output current regulator and is ideal for powering portable equipment that runs on a single-cell lithium-ion (Li+) battery due to a low 60µA quiescent current.

The MPQ2166 integrates dual, 55mΩ, high-side switches and 20mΩ synchronous rectifiers for high efficiency without an external Schottky diode. The MPQ2166 has peak-current-mode control and internal compensation and is capable of low dropout configurations. Both channels can operate at 100% duty cycle.

Full protection features include cycle-by-cycle current limit and thermal shutdown.

The MPQ2166 requires a minimum number of readily available, standard, external components and is available in QFN-18 (2mmx3mm) and QFN-18 (2.5mmx3.5mm) packages.

Features

• 2.7V to 6V Operating Input Range
• 2A/2A or 3A/1A Continuous Current 
• 55mΩ/20mΩ RDS(ON)
• Programmed Frequency up to 3MHz
• External Sync Clock Up to 3MHz
• 180o Phase Shifted Operation
• PG Indicators
• External SS and Track
• Adjustable Advanced Asynchronous Mode (AAM) or Forced Continuous Conduction Mode (CCM)
• Peak Efficiency >90%  
• Output Adjustable from 0.6V to VIN 
• 100% Duty Cycle Operation
• 60µA Quiescent Current
• Cycle-by-Cycle Over-Current Protection (OCP)
• Short-Circuit Protection (SCP) with Hiccup Mode and Valley Current Detection
• Thermal Shutdown
• Available in QFN-18 (2mmx3mm) and QFN-18 (2.5mmx3.5mm) Packages
• Available in AEC-Q100 Grade-1

Applications

• Small/Handheld Devices
• DVD Drivers
• Smartphones and Feature Phones
• Battery-Powered Devices
• Portable Instrument

Application example