SNVU851A November   2023  – January 2024

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Top View with Basic External Connections
  5. 2Input, Output Voltages, and Load Current Requirements
  6. 3Jumpers and Connectors
    1. 3.1 Test Points
  7. 4Getting Started
    1. 4.1 GUI
    2. 4.2 GUI Installation and Working with GUI
  8. 5Watchdog Configuration
  9. 6Schematics, Layout and BOM
    1. 6.1 Schematic Diagram
    2. 6.2 PCB Layer Diagram
    3. 6.3 Bill of Materials
  10. 7Revision History

Abstract

The LP87725-Q1 device is designed to meet the power management requirements of the AWR, IWR and other MMICs in various automotive and industrial radar applications. The device has three step-down DC/DC converters, a LDO regulator and a load switch. The LDO is powered externally and intended for Ethernet device core supply. The load switch is intended to cut off the 3.3 V IO supply during the sensor sleep mode The device is controlled by an I2C serial interface and by enable signal. The step-down DC/DC converters support programmable switching frequency of 17.6 MHz, 8.8 MHz or 4.4 MHz and have low noise across wide frequency range which enables LDO-free power design with minimal or no additional passive filtering. LP87725-Q1 device offers flexible external component selection to optimize the design in terms of performance or cost. The features of the device target safety-relevant applications with system-safety requirements up to ASIL-B level.

This user's guide provides instructions to power-up and evaluate LP87725-Q1 device using the LP87725Q1EVM evaluation module (EVM) and software user interface (LP87725-Q1 GUI). By default LP87725Q1EVM has LP87725101RAGRQ1 device OTP version (17.6 MHz), but this EVM can also be used to evaluate another OTP device from LP8772x-Q1 product family.

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CAUTION: Hot surface.
Contact can cause burns.
Do not touch!