Monolithic Power Systems (MPS) MP1652N Synchronous Step-Down Converters
Monolithic Power Systems (MPS) MP1652N Synchronous Step-Down Converters are fully integrated, high-frequency buck converters with internal MOSFETs that deliver up to 2A of continuous output current. Operating from a 4.5V to 16V input range, the device provides excellent line and load regulation in a compact 1.6mm × 1.6mm SOT563 package. The MPS MP1652N features synchronous rectification and constant-on-time (COT) control for high efficiency, fast transient response, and tight output regulation. Integrated protection features, including over-current, short-circuit, under-voltage, and thermal protection, help improve reliability in flat-panel displays, set-top boxes, security cameras, and general-purpose power supplies.
Features
- Wide 4.5V to 16V operating input voltage range
- 2A output current
- 105mΩ/60mΩ low on resistance internal power MOSFETs
- 110μA quiescent current
- 0.6V to 8V output voltage range
- Feedback accuracy
- ±1% at room temperature
- ±1.5% at full temperature
- 1.1MHz switching frequency
- Power-save mode for high light-load efficiency
- Excellent load transient performance
- Pre-biased start-up
- Enable (EN) power sequencing
- Over-Current Protection (OCP) with hiccup mode
- Thermal shutdown
- Available in a SOT563 (1.6mm х 1.6mm) package
- Optimized performance with the MPS MPL-AL6050 inductor series
- Moisture Sensitivity Level (MSL) 1
Applications
- Flat-panel TVs and monitors
- Digital set-top boxes
- Security cameras
- General-purpose power supplies
Specifications
- 4.5V to 16V operating supply voltage range
- 2W maximum power dissipation
- Supply current
- 10μA maximum shutdown
- 200μA maximum quiescent, 110μA typical
- MOSFET
- 105mΩ typical high-side MOSFET on-resistance
- 60mΩ typical low-side MOSFET on-resistance
- 10μA maximum switch leakage
- Current limit and Zero-Current Detection (ZCD)
- 2.3A to 4.7A valley current limit range, 3.5A typical
- 12.5% typical short hiccup duty cycle
- 150mA typical ZCD
- 1000kHz to 1210kHz switching frequency range, 1100kHz typical
- 45ns typical minimum on time
- 80ns to 150ns minimum off-time range, 115ns typical
- Reference and Soft Start (SS)
- Feedback voltage
- 594mV to 606mV range at +25°C, 600mV typical
- 591mV to 609mV range from -40°C to +125°C, 600mV typical
- 0.5ms to 1.6ms SS time range, 1ms typical
- Feedback voltage
- Thermal protection
- 155°C typical thermal shutdown
- 20°C typical thermal 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.