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LMR34206-Q1

ACTIVE

4.2-V to 42-V, 0.6-A ultra-small synchronous step-down converter

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Data sheet

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LMR36006-Q1 ACTIVE 4.2-V to 60-V, 0.6-A ultra-small synchronous step-down converter Pin-to-pin with LMR34206-Q1. High frequency and tight current limit to lower inductor size.

LMR34206-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Topology Buck Iout (max) (A) 0.6 Vin (max) (V) 42 Vin (min) (V) 3.6 Vout (max) (V) 40 Vout (min) (V) 3.3 Features Enable, Fixed Output, Fixed soft start, Light-load efficiency, Power good, Spread Spectrum, Synchronous Rectification, Synchronous rectification, Wettable flanks package EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000025 Duty cycle (max) (%) 99 TI functional safety category Functional Safety-Capable
Rating Automotive Topology Buck Iout (max) (A) 0.6 Vin (max) (V) 42 Vin (min) (V) 3.6 Vout (max) (V) 40 Vout (min) (V) 3.3 Features Enable, Fixed Output, Fixed soft start, Light-load efficiency, Power good, Spread Spectrum, Synchronous Rectification, Synchronous rectification, Wettable flanks package EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000025 Duty cycle (max) (%) 99 TI functional safety category Functional Safety-Capable
VQFN-HR (RNX) 12 6 mm² 3 x 2
  • AEC-Q100-qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Designed for automotive applications
    • Junction temperature range –40°C to +150°C
    • Protection features: thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, hiccup short-circuit protection
    • 0.2-V dropout with 0.6-A load (typical)
    • ±1.5% reference voltage tolerance
    • 3.3-V, 5-V fixed-output voltage options
  • Suited for scalable power supplies
  • 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
      • Increased light load efficiency in PFM
      • Low operating quiescent current of 24 µA
    • Optimized 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
    • AEC-Q100-qualified for automotive applications:
      • Temperature grade 1: –40°C to +125°C, TA
    • Designed for automotive applications
      • Junction temperature range –40°C to +150°C
      • Protection features: thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, hiccup short-circuit protection
      • 0.2-V dropout with 0.6-A load (typical)
      • ±1.5% reference voltage tolerance
      • 3.3-V, 5-V fixed-output voltage options
    • Suited for scalable power supplies
    • 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
        • Increased light load efficiency in PFM
        • Low operating quiescent current of 24 µA
      • Optimized 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

      The LMR34206-Q1 regulator is an easy-to-use, synchronous, step-down DC/DC converter. With integrated high-side and low-side power MOSFETs, up to of output current is delivered over a wide input voltage range of 4.2 V to 42 V.

      The LMR34206-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.

      The LMR34206-Q1 is in a HotRod™ package which enables low EMI, higher efficiency, and the smallest package to die ratio. The device requires few external components and has a pinout designed for simple PCB layout. The small solution size and feature set of the LMR34206-Q1 are designed to simplify implementation for a wide range of end equipment.

      The LMR34206-Q1 regulator is an easy-to-use, synchronous, step-down DC/DC converter. With integrated high-side and low-side power MOSFETs, up to of output current is delivered over a wide input voltage range of 4.2 V to 42 V.

      The LMR34206-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.

      The LMR34206-Q1 is in a HotRod™ package which enables low EMI, higher efficiency, and the smallest package to die ratio. The device requires few external components and has a pinout designed for simple PCB layout. The small solution size and feature set of the LMR34206-Q1 are designed to simplify implementation for a wide range of end equipment.
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      Technical documentation

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      Top documentation Type Title Format options Date
      * Data sheet LMR34206-Q1 4.2-V to 42-V, 0.6-A Ultra-Small Synchronous Step-Down Converter datasheet (Rev. A) PDF | HTML 03 Oct 2019
      Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
      Technical article Powering levels of autonomy: a quick guide to DC/DC solutions for SAE autonomy lev 18 Nov 2020
      Technical article Optimizing flip-chip IC thermal performance in automotive designs PDF | HTML 11 Dec 2019
      Design guide Automotive ADAS camera power supply reference design (Rev. A) 22 Aug 2019

      Design & development

      For additional terms or required resources, click any title below to view the detail page where available.

      Evaluation board

      LMR34215FSC5EVM — 42-V, 1.5-A synchronous step-down converter evaluation module

      The LMR34215FSC5EVM evaluation module (EVM) helps designers evaluate the operation and performance of the LMR34215-Q1 wide-input buck regulator. The LMR34215-Q1 is an easy-to-use synchronous step-down DC/DC converter capable of driving up to 1.5 A of load current from an input voltage of up to 42 (...)
      User guide: PDF
      Not available on TI.com
      Simulation model

      LMR34206FSC5-Q1 Unencrypted PSPICE TRANSIENT MODEL

      SNVMBT4.ZIP (162 KB) - PSpice Model
      Download
      Simulation model

      LMR34206SC5-Q1 Unencrypted PSPICE TRANSIENT MODEL

      SNVMBT8.ZIP (186 KB) - PSpice Model
      Download
      Reference designs

      PMP31273 — Automotive dual buck converter reference design for C2000™ MCU with supervisor and watchdog

      This reference design is a flexible and compact power supply providing 5-V and 3.3-V output rails to supply the C2000™ MCU. The design includes two LMR34206-Q1 ultra-small synchronous step-down converter devices and one TPS3850-Q1 precision voltage supervisor with programmable window watchdog (...)
      Test report: PDF
      Package Pins CAD symbols, footprints & 3D models
      VQFN-HR (RNX) 12 Ultra Librarian
      TI's Standard Terms and Conditions for Evaluation Items apply.

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