MAX15038
PRODUCTION4A, 2MHz Step-Down Regulator with Integrated Switches
Smallest, Most Efficient, 4A Step-Down Regulator Switches Frequencies Up to 2MHz
- Part Models
- 2
- 1ku List Price
- Starting From $2.48
Overview
- Internal 31mΩ RDS(ON) High-Side and 24mΩ RDS(ON) Low-Side MOSFETs
- Continuous 4A Output Current Over Temperature
- ±1% Output Accuracy Over Load, Line, and Temperature
- Operates from 2.9V to 5.5V VIN Supply
- Adjustable Output from 0.6V to (0.9 x VIN)
- Soft-Start Reduces Inrush Supply Current
- 500kHz to 2MHz Adjustable Switching Frequency
- Compatible with Ceramic, Polymer, and Electrolytic Output Capacitors
- Nine Preset and Adjustable Output Voltages
- 0.6V, 0.7V, 0.8V, 1.0V, 1.2V, 1.5V, 1.8V, 2.0V, 2.5V, and Adjustable
- Monotonic Startup for Safe-Start into Prebiased Outputs
- Selectable Forced PWM or Skip Mode for Light Load Efficiency
- Overcurrent and Overtemperature Protection
- Output Current Sink/Source Capable with Cycle-by-Cycle Protection
- Open-Drain Power-Good Output
- Lead-Free, 4mm x 4mm, 24-Pin Thin QFN Package
The MAX15038 high-efficiency switching regulator delivers up to 4A load current at output voltages from 0.6V to 90% of VIN. The IC operates from 2.9V to 5.5V, making it ideal for on-board point-of-load and postregulation applications. Total output error is less than ±1% over load, line, and temperature ranges.
The MAX15038 features fixed-frequency PWM mode operation with a switching frequency range of 500kHz to 2MHz set by an external resistor. The MAX15038 provides the option of operating in a skip mode to improve light-load efficiency. High-frequency operation allows for an all-ceramic capacitor design. The high operating frequency also allows for small-size external components.
The low-resistance on-chip nMOS switches ensure high efficiency at heavy loads while minimizing critical inductances, making the layout a much simpler task with respect to discrete solutions. Following a simple layout and footprint ensures first-pass success in new designs.
The MAX15038 comes with a high bandwidth (28MHz) voltage-error amplifier. The voltage-mode control architecture and the voltage-error amplifier permit a type III compensation scheme to be utilized to achieve maximum loop bandwidth, up to 20% of the switching frequency. High loop bandwidth provides fast transient response, resulting in less required output capacitance and allowing for all-ceramic-capacitor designs.
The MAX15038 provides two three-state logic inputs to select one of nine preset output voltages. The preset output voltages allow customers to achieve ±1% output-voltage accuracy without using expensive 0.1% resistors. In addition, the output voltage can be set to any customer value by either using two external resistors at the feedback with a 0.6V internal reference or applying an external reference voltage to the REFIN input. The MAX15038 offers programmable soft-start time using one capacitor to reduce input inrush current.
Applications
- ASIC/CPU/DSP Core and I/O Voltages
- Base-Station Power Supplies
- DDR Power Supplies
- POLs
- RAID Control Power Supplies
- Server Power Supplies
- Telecom and Networking Power Supplies
Documentation
Data Sheet 1
User Guide 1
Technical Articles 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX15038ETG+ | 24-TQFN-4X4X0.75 | ||
| MAX15038ETG+T | 24-TQFN-4X4X0.75 |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
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Tools & Simulations
ADI Power Studio™ Designer
ADI Power Studio™ Designer is the next-generation tool for IC-level, power supply design, guiding engineers to faster, validated solutions.
Learn MoreSIMPLIS Models 1
Evaluation Kits
Evaluation Kit for the MAX15038 and MAX15039
Reference Designs
3.3V/4A Synchronous Step-Down DC-DC Converter Using MAX15038
Part Used
Design & Integration Tools
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