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LMR33620 SIMPLE SWITCHER® Synchronous Buck Converter
Texas Instruments' 3.8 V to 36 V, 2 A step-down voltage converter features ultra-low EMI
Texas Instruments' LMR33620 is a SIMPLE SWITCHER easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for rugged industrial applications. The LMR33620 drives up to 2 A of load current from an input of up to 36 V. This converter 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 flexible and easy-to-use solutions for a wide range of applications.
The LMR33620 automatically folds back frequency at light loads to improve efficiency. Integration eliminates most external components and provides a pinout designed for simple PCB layout. Protection features include thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, and hiccup short-circuit protection. The LMR33620 is available in an 8-pin HSOIC package and in a 12-pin 3 mm × 2 mm next-generation VQFN package with wettable flanks. This device is available in an AEC-Q100-qualified version.
- Configured for rugged industrial applications:
- Input voltage range: 3.8 V to 36 V
- Output voltage range: 1 V to 24 V
- Output current: 2 A
- Peak-current-mode control
- Short minimum on-time: 68 ns
- Frequencies: 400 kHz, 1.4 MHz, and 2.1 MHz
- Junction temperature range: -40°C to +125°C
- Low EMI and low switching noise
- Integrated compensation network
- Functional safety-capable: documentation available to aid functional safety system design
- Low EMI and switching noise:
- HotRod™ package
- Parallel input current paths
- High power conversion at all loads:
- Peak efficiency: >95%
- Low operating quiescent current: 25 µA
- Flexible system interface: power-good flag and precision enable
- Use TPSM53602 module for faster time-to-market
- Motor drive systems:
- Drones, AC inverters, VF drives, and servos
- General-purpose wide VIN powers
- Factory and building automation systems:
- PLC CPU, HVAC controls, and elevator controls
