MAX25232
36V, 3A Mini Buck Converter with 3.5uA IQ
Best-in-Class Ultra-Low IQ Mini Buck Ideal for Automotive Applications
Top
Overview
Features and Benefits
- Synchronous DC-DC Converter with Integrated FETs
- MAX25232ATCA/VY+/B = 2.5A IOUT
- MAX25232ATCD/VY+/E = 3A IOUT
- 3.5µA Quiescent Current when in Standby Mode
- Small Solution Size Saves Space
- 65ns Minimum On-Time
- 2.1MHz or 400kHz Operating Frequency
- Fixed 5V/3.3V Output Voltages with ±2% Output Accuracy in FPWM Mode (5V/3.3V)
- Other Fixed VOUT Options Between 3V - 5.5V (in 50mV steps) Available for Precise Output Voltage Setting
- External Resistor Divider Options to Adjust the Output Voltage Between 3V and 10V
- Fixed 3.5ms Internal Soft-Start
- Innovative Current-Mode-Control Architecture Minimizes Total Board Space and BOM Count
- PGOOD Output and High-Voltage EN Input Simplify Power Sequencing
- Protection Features and Operating Range Ideal for Automotive Applications
- 3.5V to 36V Operating VIN Range
- 40V Load-Dump Protection
- 99% Duty-Cycle Operation with Low Dropout
- -40°C to +125°C Automotive Temperature Range
- AEC-Q100 Qualified
Product Details
The MAX25232 is a small, synchronous buck converter with integrated high-side and low-side switches. The device is designed to deliver up to 3A with 3.5V to 36V input voltages while using only 3.5µA quiescent current at no load.
The device provides an accurate output voltage of ±2% in FPWM mode within the normal 6V to 18V operation input range. With 65ns minimum on-time capability, the converter is capable of large input-to-output conversion ratios. Voltage quality can be monitored by observing the PGOOD signal. The device can operate in dropout by running at 99% duty cycle, making it ideal for automotive and industrial applications. The device offers two fixed 5V and 3.3V output voltages. In addition, the device can be configured for 1V to 10V output voltages using an external resistor-divider. Frequency is internally fixed at 2.1MHz, which allows for small external components and reduced output ripple, and guarantees no AM interference. A 400kHz option is also offered to provide minimum switching losses and maximum efficiency. The device automatically enters skip mode at light loads with ultra-low 3.5µA quiescent current at no load. The device offers pin-enabled spread-spectrum frequency modulation designed to minimize EMI-radiated emissions due to the modulation frequency.
The MAX25232 variants are available in a small (3mm x 3mm), 12-pin, side-wettable TDFN package with an exposed pad, and require very few external components.
Applications
- Automotive
- High-Voltage DC-DC Converters
- Industrial
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
Tools & Simulations
EE-Sim® Power Tools
The EE-Sim DC-DC Converter Tool uses your requirements to quickly create a complete power design including a schematic, BOM with commercially available parts, and time and frequency domain simulations. Your customized schematic can be downloaded for further analysis in the standalone EE-Sim OASIS Simulator, featuring SIMPLIS and SIMetrix SPICE engines.
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.
Support & Discussions
MAX25232 Discussions
Sample & Buy
Ordering FAQs
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.