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Texas Instruments LM5150-Q1 Low IQ Boost Controller

Texas Instruments LM5150-Q1 Low IQ Boost Controller is a wide input range automatic boost controller. The device is suitable for use as a pre-boost converter which maintains the output voltage from a vehicle battery during automotive cranking or a backup battery during the loss of a vehicle battery. A resistor programs the LM5150-Q1 switching frequency from 220kHz to 2.3MHz. Fast switching (≥ 2.2MHz) minimizes AM band interference and allows for a small solution size and fast transient response.

Features

  • AEC-Q100 qualified
    • Device Temperature Grade 1 (–40°C to +125°C ambient operating temperature range)
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Wide VIN input range from 1.5V to 42V when VOUT ≥ 5V (65V absolute maximum)
  • Low shutdown current (IQ ≤ 5µA)
  • Low standby current (IQ ≤ 15µA)
  • Four programmable output voltage options and two selectable configurations
    • 6.8V, 7.5V, 8.5V, or 10.5V
    • Start-stop or E-Call configurations
  • Adjustable switching frequency from 220kHz to 2.3MHz
  • Automatic wake-up and standby mode transition
  • Optional clock synchronization
  • Boost status indicator
  • 1.5A peak MOSFET gate driver
  • An adjustable cycle-by-cycle current limit
  • Thermal shutdown
  • 16-pin WQFN with wettable flanks

Applications

  • Automotive start-stop system
  • Automotive emergency call system
  • Battery-powered boost converters

Typical Application Circuit

Application Circuit Diagram - Texas Instruments LM5150-Q1 Low IQ Boost Controller
Inilathala: 2018-04-13 | Na-update: 2022-12-01