MAX26403
PRODUCTION36V, 2.5A/3.5A, Fully Integrated Synchronous Silent Switcher Buck Converters
- Part Models
- 4
- 1ku List Price
- Starting From $1.46
Overview
- Silent Switcher
- Enables Compact, Efficient, Low-EMI Solution
- Spread-Spectrum Frequency Modulation
- Symmetrical Package Offers Superior EMI Performance
- Multiple Functions for Small Size
- Operating Input Voltage Range: 3V to 36V
- Synchronous DC-DC Converter with Integrated Field-Effect Transistors (FETs) up to 2.5A/3.5A
- 10μA Quiescent Current in Skip Mode
- 3MHz/2.1MHz/400kHz Switching Frequency
- Spread-Spectrum Option
- Fixed 2.5ms Internal Soft-Start
- Programmable 0.8V to 12V Output Voltage Range or Fixed 5V/3.3V Options Available
- 99% Duty Cycle Operation with Low Dropout
- High Precision for Safety Critical Applications
- MAXQ Power Architecture
- ±1.5% Output Voltage Accuracy in Forced-PWM
- Precision Enable Thresholds for Fully Programmable Undervoltage Lockout (UVLO) Thresholds
- Accurate Windowed PGOOD
- Robust for the Environment
- Average Current-Mode, Forced-PWM, and Skip Operation
- Overtemperature, Overvoltage (OV), and Short-Circuit Protection
- 3mm x 3mm FC2QFN
- -40°C to +125°C Operating Temperature Range
The MAX26402/MAX26403 ICs are tiny, low-electromagnetic interference (EMI) emission, synchronous Silent Switcher® buck converters with integrated high-side and low-side switches. The MAX26402/MAX26403 deliver up to 2.5A/3.5A over a wide 3V to 36V input voltage range. Voltage quality can be monitored by observing the power-good (PGOOD) signal. These ICs can operate in dropout by running at 99% duty cycle, making them ideal for industrial applications.
The MAX26402/MAX26403 offer externally programmable or internally fixed output voltages of 5V and 3.3V. Fixed internal frequency options of 3MHz/2.1MHz/400kHz are available, which allow for small external components and reduced output ripple, and also guarantee no amplitude modulation (AM) interference.
When SYNC is low, the MAX26402/MAX26403 automatically enter skip mode at light loads with an ultra-low quiescent current of 10μA at no load. A pin-selectable, forced-pulse-width-modulation (PWM) mode is also available, which helps improve EMI performance. The devices have a spread-spectrum frequency modulation option designed to minimize EMI-radiated emissions due to the modulation frequency.
The devices feature the MAXQ® power architecture, which provides precision transient performance and phase margin. This allows obtaining the maximum power, powerformance, and precision while minimizing system cost for any specific application.
The MAX26402/MAX26403 are available in a small, 3mm x 3mm FC2QFN package and use very few external components.
APPLICATIONS
- Point-of-Load Power Supplies
- 12V/24V Industrial Applications
- Telecom, Servers, and Networking Equipment
Documentation
Data Sheet 1
User Guide 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 |
|---|---|---|---|
| MAX26403AFLAY+ | LFCSP | ||
| MAX26403AFLAY+T | LFCSP | ||
| MAX26403AFLBY+ | LFCSP | ||
| MAX26403AFLBY+T | LFCSP |
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/SoftwareEvaluation Kits
Evaluation Kit for MAX26402/MAX26403
Resources
Latest Discussions
No discussions on MAX26403 yet. Have something to say?
Start a Discussion on EngineerZone®