CN
Auto DC/DC
NUQ3533
The NUQ3533 automotive-qualified regulator is an easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for rugged applications. The NUQ3533 drives up to 3A of load current from an input of up to 36V. It integrates two low-Rdson high-side and low-side MOSFETs. The NUQ3533 implements soft recovery from dropout which can eliminate overshoot on the output. The NUQ3533 provides high light load efficiency and output accuracy in a very small solution size. Features such as a power-good flag and precision enable provide both flexible and easy-to-use solutions for a wide range of applications. Integration eliminates most external components and provides a pinout design for a simple PCB layout.
Key Spec
Features

• AEC-Q100 qualified for automotive applications: 

– Temperature grade 1: -40°C to +125°C

• Wide Input Voltage: 3.5V to 36V

• Up to 3A continuous output current

• Optimized for ultra-low EMI requirements

Parallel input path minimizes switch node ringing

– Spread spectrum reduces peak emissions

• Designed for reliable auto-application 

– Support 40-V automotive load dump

– 1V±1% feedback reference voltage

– VOUT adjustable from 1 V to 24V

– Low drop-out mode

– Frequency: 400 kHz, 1.4 MHz, 2.1 MH

– Integrated compensation network

• High-efficiency power conversion 

– Low operating quiescent current of 25-uA

– 79% PFM efficiency at 1-mA, 13.5 VIN, 5 VOUT

– 91% PFM efficiency at 10-mA, 13.5 VIN, 5 VOUT

• Precision enable threshold for adjustable input voltage lock-out protection

• 5ms internal soft-start time

• Robust OVP, OCP, SCP, and OTP Protection

• Wettable Flank package, easy for soldering check

• 3mm×2mm QFN-12 Package

Applications

• Automotive infotainment and cluster:

  head unit, media hub, USB charger, display 

• Automotive wireless charger

• Automotive ADAS and body electronics

Datasheet Download
NUQ3533

2025 / 08 / 25