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Introduction, characteristics, and applications of Texas Instruments LP87334ERHDR dual buck converter and regulator

2/13/2024 9:40:55 AM

Summary: Designed to meet power management requirements in industrial applications.

LP87334ERHDR Texas Instruments

Texas Instruments LP87334ERHDR dual buck converters and regulators are designed to meet power management requirements in industrial applications. The device features two step-down DC/DC converters (configurable as a single two-phase regulator/two single-phase regulators), two linear regulators, and two general-purpose digital output signals. The LP87334ERHDR dual high-current buck converters and bilinear regulators are controlled by an I²c-compatible serial interface and enable signal. The buck converter supports programmable startup and shutdown delays and sequences, including GPO signals synchronized with the enable signal. The LP87334ERHDR regulator provides output short circuit and overload protection, over-temperature warning and protection, overvoltage protection (OVP) and undervoltage lockout (UVLO). This regulator is suitable for use in industrial test and measurement equipment.


characteristic

  • Two high-efficiency step-down DC-DC converters:

    • 0.7V ~ 3.36V output voltage

    • Maximum output current

    • Programmable output voltage slew rate from 0.5mV/µs to 10mV/µs

    • 2MHz switching frequency

    • Spread spectrum mode and phase interleaving reduce electromagnetic interference

  • Two linear regulators:

    • 2.5V ~ 5.5V input voltage

    • Output voltage 0.8V ~ 3.3V

    • Maximum output current 300mA

  • Input voltage range is 2.8V to 5.5V

  • Configurable general-purpose output signals (GPO, GPO2)

  • Interrupt function with programmable masking

  • Programmable Power Supply - Good Signal (PGOOD)

  • Output short circuit and overload protection

  • Over-temperature alarm and protection

  • Overvoltage protection (OVP) and undervoltage lockout (UVLO)

  • 28-pin, 5mm × 5mm VQFN package, wettable flanks


app

  • Industrial appliances

  • Test and Measurement

  • Industrial applications


Functional block diagram



Schematic diagram


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