Monolithic Power Systems (MPS) MP2462 Synchronous Step-Down Converters
Monolithic Power Systems (MPS) MP2462 Synchronous Step-Down Converters are highly efficient switching regulators designed for a wide range of power applications. These converters operate from a 4.2V to 32V input voltage range and deliver up to 2A of continuous output current. Integrated high-side and low-side MOSFETs simplify design while providing fast response through current-mode control.
The MP2462 devices feature a low 55μA quiescent current, well-suited for battery-powered and standby-power systems. These converters improve efficiency at light loads by reducing switching frequency and include low-dropout operation for battery applications. Protection features such as over-current protection, thermal shutdown, output discharge, and internal soft start help ensure reliable operation.
The MPS converters require only a few external components and are housed in a compact TSOT23-6 package for space-constrained designs. High efficiency and a wide input range make the converters suitable for smart-home devices, wide-input power supplies, and battery-powered equipment.
Features
- Wide 4.2V to 32V operating input voltage range
- 2A continuous output current
- 55μA sleep-mode quiescent current
- 160mΩ/80mΩ high-side/low-side on-resistance for internal power MOSFETs
- High Feedback (FB) accuracy
- ±0.7% at +25°C
- ±1% from -40°C to +125°C
- Internal Soft Start (SS)
- Fixed 800kHz switching frequency
- Low-Dropout (LDO) mode
- Output discharge
- Thermal shutdown
- Over-Current Protection (OCP) with hiccup mode
- Available in a TSOT23-6 package
- Optimized performance with the MPS MPL-AL6060 inductor series
Applications
- Battery-powered systems
- Smart homes
- Wide input-range power supplies
- Standby power supplies
Specifications
- 4.2V to 32V operating supply voltage range
- 2.2W maximum continuous power dissipation
- Input under-voltage lockout (UVLO) threshold
- 3.55V to 4.15V rising range
- 360mV hysteresis
- Supply current
- 100µA maximum quiescent, 55µA typical
- 3µA maximum shutdown
- MOSFET
- 160mΩ typical high-side MOSFET (HS-FET) on-resistance
- 80mΩ typical low-side MOSFET (LS-FET) on-resistance
- 1µA maximum switch leakage current
- Current limit and Zero-Current Detection (ZCD)
- 2.1A to 3.6A high-side (HS) switching peak current limit range
- 1.85A to 2.95A low-side (LS) switching peak current limit range
- 11.5% typical short hiccup duty cycle
- 50mA typical ZCD current
- 600kHz to 950kHz switching frequency range, 800kHz typical
- 110ns (typical) minimum on time
- 200ns (typical) minimum off time
- Reference and SS
- Feedback (FB) voltage
- 596mV to 604mV range at +25°C, 600mV typical
- 594mV to 606mV range from -40°C to +125°C, 600mV typical
- ±50nA FB current range
- 2.5ms typical internal SS time
- Feedback (FB) voltage
- Enable (EN) and UVLO
- 1.14V to 1.3V EN rising threshold range, 1.22V typical
- 220mV typical EN hysteresis
- 1MΩ typical EN pull-down resistor
- 2µs typical output over-voltage (OV) delay
- 150Ω typical discharge resistor
- Thermal
- 150°C shutdown
- 20°C hysteresis
- -40°C to +125°C operating junction temperature range
- +150°C maximum junction temperature
- +260°C maximum lead temperature
Typical Application
Functional Block Diagram
Related Inductors
Monolithic Power Systems (MPS) MPL Surface-Mount Inductors
Designed for optimal performance with MPS ICs, provides an easy, complete power solution.