MAX20075DATCA/V+T

The MAX20075D/MAX20076D/MAX25276D are small, synchronous buck converters with integrated high-side and low-side switches. The MAX20076D/MAX25276D are designed to deliver up to 1.2A and the MAX20075D up to 0.6A, with 3.5V to 36V input voltages, while using only 3.5μA quiescent current at no load. The devices provide an accurate output voltage of ±2% within the normal operation input range of 6V to 18V. With 20ns minimum ontime capability, the converter is capable of large input-tooutput conversion ratios. Voltage quality can be monitored by observing the PGOOD signal. The devices can operate in dropout by running at 99% duty cycle, making them ideal for automotive and industrial applications. The devices offer two fixed output voltages of 5V and 3.3V. In addition, the devices 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. The devices automatically enter skip mode at light loads with ultra-low quiescent current of 3.5μA at no load. The devices offer pin-enabled spread-spectrumfrequency modulation designed to minimize EMI-radiated emissions due to the modulation frequency. The MAX20075D/MAX20076D/MAX25276D are available in small (3mm × 3mm) 12-pin TDFN and side-wettable TDFN packages with an exposed pad, and use very few external components.

Applications

• Automotive
• Industrial High-Voltage DC-DC Converters

Key features

• Synchronous DC-DC Converter with Integrated FETs
• MAX20075D = 0.6A IOUT, MAX20076D/MAX25276D = 1.2A IOUT
• 3.5μA Quiescent Current when in Standby Mode
• 20ns Minimum On-Time
• Small Solution Size Saves Space
• 2.1MHz Frequency
• Programmable 1V to 10V Output for the Buck, or Fixed 5V/3.3V Options Available
• Fixed 2.5ms Internal Soft-Start
• Fixed Output Voltage with ±2% Output Accuracy (5V/3.3V), or Externally Resistor Adjustable (1V to 10V) with ±1.5% FB Accuracy
• 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