LMR34215-Q1

• AEC-Q100-qualified for automotive applications:
  • Temperature grade 1: –40°C to +125°C, T_A
• Functional Safety-Capable
  • Documentation available to aid functional safety system design
• Designed for automotive applications
  • Junction temperature range –40°C to +150°C
  • 0.4-V dropout with 1.5-A load (typical)
  • ±1.5% reference voltage tolerance
  • 5-V fixed-output, adjustable output voltage options
• Suited for scalable power supplies
  • Pin compatible with:
    • LMR36015-Q1, LMR36006-Q1 (60 V, 0.6 A, or 1.5 A)
    • LMR33630-Q1, LMR33620-Q1 (36 V, 2 A, or 3 A)
  • 400-kHz, 2.1-MHz frequency options
• Integration reduces solution size and cost
  • Small, 2-mm × 3-mm VQFN package with wettable flanks
  • Few external components
• Low power dissipation across load spectrum
  • 93% efficiency at 400 kHz (12 V_IN, 5 V_OUT, 1 A)
  • Increased light load efficiency in PFM
  • Low operating quiescent current of 24 µA
• Optmized for ultra low EMI requirements
  • Meets CISPR25 class 5 standard
  • Hotrod™ package minimizes switch node ringing
  • Parallel input path minimizes parasitic inductance
  • Spread spectrum reduces peak emissions

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The LMR34215-Q1 regulator is an easy-to-use, synchronous, step-down DC/DC converter. With integrated high-side and low-side power MOSFETs, output current is delivered over a wide input voltage range of 4.2 V to 42 V.

The LMR34215-Q1 uses peak-current-mode control to provide optimal efficiency and output voltage accuracy. Precision enable gives flexibility by enabling a direct connection to the wide input voltage or precise control over device start-up and shutdown. The power-good flag, with built-in filtering and delay, offers a true indication of system status eliminating the requirement for an external supervisor.