MAX42402
RECOMMENDED FOR NEW DESIGNS36V, 2.5A/3.5A, Fully Integrated Synchronous Buck Converter
- Part Models
- 4
- 1ku List Price
- Starting From $0.79
Overview
- Multiple Functions for Small Size
- Operating Input Voltage Range: 4.5V to 36V
- Synchronous DC-DC Converter with Integrated FETs up to 2.5A/3.5A
- 27μA Quiescent Current in Skip Mode
- 1.5MHz/400kHz Switching Frequency
- Spread-Spectrum Option
- Internal Soft-Start
- 2.5ms for 400kHz
- 3.5ms for 1.5MHz
- Programmable Output Voltage
- 0.8V to 14V for 400kHz
- 0.8V to 12V for 1.5MHz
- 99% Duty Cycle Operation with Low Dropout
- High Precision for Safety-Critical Applications
- Precision Enable Thresholds for Fully Programmable UVLO Thresholds
- Accurate Windowed PGOOD
- Forced-PWM and Skip Operation
- Overtemperature, Overvoltage, and Short-Circuit Protection
- 3mm x 3mm FC2QFN
- -40°C to +125°C Operating Temperature Range
The MAX42402/MAX42403 IC are a tiny synchronous buck converter with integrated high-side and low-side switches. The MAX42402/MAX42403 are designed to deliver up to 2.5A/3.5A with a wide, 4.5V to 36V input voltage range. Voltage quality can be monitored by observing the PGOOD signal. The IC can operate in dropout by running at 99% duty cycle, making it ideal for industrial applications.
The MAX42402/MAX42403 offer externally programmable output voltage. Fixed internal frequency options of 1.5MHz/400kHz are available, which allow for small external components and reduced output ripple.
When SYNC is low, the MAX42402/MAX42403 automatically enter skip mode at light loads with an ultra-low quiescent current of 27uA at no load. A pin-selectable forced-PWM mode is also available, which helps to improve EMI performance. The devices have a spread-spectrum frequency modulation option designed to minimize EMI-radiated emissions due to the modulation frequency.
The MAX42402/MAX42403 are available in a small, 3mm x 3mm FC2QFN package and uses very few external components.
Applications
- Industrial Automation
- Point-of-Load
- Distributed DC Power Systems
Documentation
Data Sheet 1
Video 1
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 |
|---|---|---|---|
| MAX42402AFLA+ | 15-Lead FC2QFN (3mm x 3mm x 0.75mm) | ||
| MAX42402AFLA+T | 15-Lead FC2QFN (3mm x 3mm x 0.75mm) | ||
| MAX42402AFLB+ | 15-Lead FC2QFN (3mm x 3mm x 0.75mm) | ||
| MAX42402AFLB+T | 15-Lead FC2QFN (3mm x 3mm x 0.75mm) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareTools & Simulations
LTspice
Models for the following parts are available in LTspice:
- MAX42402B
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 MoreLTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
Evaluation Kit for MAX42402/MAX42403
Resources
Evaluation Kit for MAX42402/MAX42403