LMR33630ADDA SIMPLE SWITCHER® Synchronous Buc

By Texas Instruments 37

LMR33630ADDA SIMPLE SWITCHER® Synchronous Buc

Texas Instruments' LMR33630 SIMPLE SWITCHER® regulator is an easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for rugged industrial applications. The LMR33630 is capable of driving up to 3 A of load current from an input of up to 36 V. The LMR33630 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. The LMR33630 automatically folds back frequency at light load 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 LMR33630 is available in an 8-pin HSOIC package and in a 12-pin 3 mm × 2 mm VQFN package with wettable flanks. This device is also available in an AEC-Q100-qualified version.

Features
  • Configured for rugged industrial applications
    • Input voltage range: 3.8 V to 36 V
    • Output voltage range: 1 V to 24 V
    • Output current: 3 A
    • 75 mΩ/50 mΩ RDS-ON Power MOSFETs
    • Peak-current-mode control
    • Short minimum on-time of 68 ns
    • Frequency: 400 kHz, 1.4 MHz, 2.1 MHz
    • Junction temperature range -40°C to + 125°C
    • Low EMI and low switching noise
    • Integrated compensation network
  • High efficiency solution
    • Peak efficiency > 95%
    • Low shutdown quiescent current of 5 µA
    • Low operating quiescent current of 25 µA
  • Flexible system interface
    • Power-good flag and precision enable
  • Create a custom design using the LMR33630 with the WEBENCH Power Designer
Applications
  • Motor drive systems:
    • Drones
    • AC inverters
    • VF drives
    • Servos
  • Factory and building automation systems:
    • PLC CPUs
    • HVAC controls
    • Elevator control
  • General purpose wide VIN power supplies

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