Create a design and simulate using EE-Sim tools: MAX16956AUBC/V+
The MAX16956AUBC/V+ is a small, synchronous buck converter with integrated high-side and low-side switches. The device is designed to deliver up to 300mA with input voltages from 3.5V to 36V, while using only 1.1μA quiescent current at no load (fixed-output versions). Voltage quality can be monitored by observing the active-low RESET signal. The device can operate near dropout by running at 97% duty cycle, making it ideal for automotive applications under cold-crank.
The device offers fixed-output voltages of 5V and 3.3V, as well as an adjustable version. The adjustable version allows the user to program the output voltage between 1V and 10V by using a resistor-divider. Frequency is fixed at 2.1MHz, which allows for small external components, reduced output ripple, and minimized AM radio interference. The device offers both forced-PWM and skip modes of operation, with ultra-low quiescent current of 1.1μA in skip mode. The device can be ordered with spread-spectrum frequency modulation designed to minimize EMI-radiated emissions due to the switching frequency.
The MAX16956AUBC/V+ is available in a small (3mm × 3mm) 10-pin μMAX package and operates across the full automotive temperature range of -40°C to +125°C. The device is AEC-Q100 qualified.
Feature
- Integration and High-Switching Frequency Saves Space
- DC-DC Converter Up to 300mA Capability
- Fixed 5V/3.3V or Programmable Output-Voltage Options (1V to 10V)
- Current-Mode-Control Architecture
- 2.1MHz Operating Frequency
- Fixed 5.4ms Internal Soft-Start
- Spread-Spectrum Frequency Modulation Reduces EMI Emissions
- Low IQ Enables Designers to Meet Stringent OEM Module Power-Consumption Requirements
- 1.1μA Quiescent Current in Standby Mode (Fixed-Output-Voltage Versions Only)
- Wide Input Voltage Range Supports Automotive Applications
- Operating VIN Range: 3.5V to 36V (42V Tolerant)
- 97% (Max) Duty-Cycle Operation with Low Dropout
- Robust Performance Supports Wide Range of Automotive Applications
- Short-Circuit, Thermal Protections
- -40°C to +125°C Automotive Temperature Range
- AEC-Q100 Qualified
Applications
- Automotive Body ECUs
- Distributed DC Power Systems
- Point-of-Load Applications
