MAX25254
Dual 36V Input Voltage, 8A Synchronous Buck Converters with Multiphase Capability and ASIL B Safety Level
High Power Density and Scalable Power Conversion for Automotive Off-Battery Applications from Dual 6A to Single 32A
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Overview
Features and Benefits
- Dual Buck Converter
- Wide Input Range from 3.0V to 36V (42V, max)
- Low Shutdown Supply Current (6.5µA, max)
- Low Operating Quiescent Current with One Channel ON (12µA, typ)
- Programmable VOUT from 0.8V to 14V
- Up to 8A per Channel
- 180° Out-of-Phase Operation between Two Converters
- 24ns (typ) Minimum On-Time
- Dual/Quad-Phase Operation
- Ability to Operate Two ICs in Parallel for Quad-Phase Operation
- ±10% Current Sharing Accuracy
- Supports up to 16A in Dual-Phase and 32A in QuadPhase
- Diagnostics and Redundant Circuits (MAX25255)
- ASIL B Compliant
- Redundant Reference
- Die Temperature Monitor
- Precision Overvoltage and Undervoltage Protection
- General
- 23-Pin, 4.50mm x 5.75mm FC2QFN Package
- -40°C to +125°C Operating Ambient Temperature
- AEC-Q100 Rating
- 200kHz, 400kHz, 1MHz, or 2MHz Switching Frequency Options
- Spread Spectrum
Product Details
The MAX25254/MAX25255 are small, synchronous dual buck converters with integrated high-side and lowside switches. The ICs are designed to deliver up to 8A per channel with input voltages from 3V to 36V while using only 12μA quiescent current at no load. Voltage quality can be monitored by observing the PGOOD signals. The MAX25254/MAX25255 can regulate the output voltage in the dropout region by running at 99% of the duty cycle, making them ideal for automotive and industrial applications.
The MAX25254/MAX25255 offer two fixed output voltages of 5V and 3.3V. Four fixed frequency options allow for small external components and reduced output ripple, and also guarantee no AM interference. The MAX25254/MAX25255 can enter skip mode at light loads with ultra-low quiescent current of 12μA at no load. The MAX25254/MAX25255 can be ordered with spread spectrum enabled for optimum EMI performance.
Two buck converters within the MAX25254D and MAX25255D can be configured for dual-phase operation with up to 16A output load capability. Furthermore, the MAX25254D/MAX25255D and the MAX25254Q/MAX25255Q can be used in parallel to provide quad-phase operation that supports up to 32A (max) output current.
The MAX25254/MAX25255 are available in a small, 4.50mm x 5.75mm, 23-pin FC2QFN package and use very few external components.
APPLICATIONS
- Front-End Power Supply for Head Units
- ASIL Applications
- General-Purpose Dual Buck Converters
- Telematics Modules
- Front Camera Power
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Documentation & Resources
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| MAX25254AFDC/VY+ | Material Declaration | Reliability Data | 23L, FC2QFN Package (4.5mm x 5.75mm x 0.75mm) | |
| MAX25254AFDC/VY+T | Material Declaration | Reliability Data | 23L, FC2QFN Package (4.5mm x 5.75mm x 0.75mm) | |
| MAX25254AFDE/VY+ | Material Declaration | Reliability Data | 23L, FC2QFN Package (4.5mm x 5.75mm x 0.75mm) | |
| MAX25254AFDE/VY+T | Material Declaration | Reliability Data | 23L, FC2QFN Package (4.5mm x 5.75mm x 0.75mm) | |
| MAX25254AFDF/VY+ | Material Declaration | Reliability Data | 23L, FC2QFN Package (4.5mm x 5.75mm x 0.75mm) | |
| MAX25254AFDF/VY+T | Material Declaration | Reliability Data | 23L, FC2QFN Package (4.5mm x 5.75mm x 0.75mm) | |
| MAX25254DAFDJ/VY+ | Material Declaration | Reliability Data | 23L, FC2QFN Package (4.5mm x 5.75mm x 0.75mm) | |
| MAX25254DAFDJ/VY+T | Material Declaration | Reliability Data | 23L, FC2QFN Package (4.5mm x 5.75mm x 0.75mm) | |
| Wafer Fabrication Data |
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