Monolithic Power Systems (MPS) MP1604 Synchronous Step-Down Converters
Monolithic Power Systems (MPS) MP1604 Synchronous Step-Down Converters are monolithic buck converters with integrated power MOSFETs that deliver up to 4A of continuous output current. These converters operate from a 2.4V to 5.5V input range and support output voltages as low as 0.4V. The MPS MP1604 features constant-on-time (COT) control for fast transient response, a low 4.5μA quiescent current, and a 1.25MHz switching frequency. Housed in an ultra-small SOT583 package, the devices include short-circuit protection, thermal shutdown, power-good indication, and soft-start functionality for reliable operation in portable devices, Solid-State Drive (SSD) modules, printers, PCs, and IP cameras.
Features
- Wide 2.4V to 5.5V operating input voltage range
- Up to 4A of output current
- 16mΩ and 10mΩ internal power MOSFET switches
- Low 4.5μA (typical) quiescent current
- 1.25MHz fixed switching frequency
- Enable (EN) function
- High feedback accuracy
- ±0.75% at +25°C
- ±1% from -40°C to +125°C
- Output discharge function
- Power Good (PG) indication
- Adjustable output voltage from 0.4V
- Internal Soft Start (SS)
- Pre-biased start-up
- Short-Circuit Protection (SCP) with hiccup mode
- Thermal shutdown
- Available in an SOT583 package
- Optimized performance with the MPS MPL-AL4020 inductor series
Applications
- IP cameras
- Notebooks and PCs
- SSD/optical modules
- Multi-function printers
- Battery-powered devices
Specifications
- 2.4V to 5.5V operating supply voltage range
- 2.3W maximum power dissipation
- Supply current
- 0.5μA maximum shutdown, 0.2μA typical
- 5.5μA maximum quiescent, 4.5μA typical
- Feedback
- 397mV to 403mV range at +25°C, 400mV typical
- 396mV to 404mV range from -40°C to +125°C, 400mV typical
- 50nA maximum current, 10nA typical
- MOSFET switch on-resistance at 5V
- 16mΩ typical P-channel
- 10mΩ typical N-channel
- MOSFET switch leakage
- 1μA maximum P-channel, 0μA typical
- 3μA maximum N-channel, 2μA typical
- 1100kHz to 1400kHz switching frequency range, 1250kHz typical
- 40ns minimum on time
- Current limit
- 5A to 8A P-channel MOSFET (P-FET) peak range, 6A typical
- 4A to 7A N-channel MOSFET (N-FET) peak range, 5A typical
- 100mA typical Zero-current detection (ZCD)
- 1ms typical soft-start time
- 54Ω typical output discharge resistor
- Thermal
- 150°C typical shutdown
- 20°C typical 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.