SNVU879 June   2024 LMR36503E-Q1

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 EVM Setup
      1. 2.1.1 Quick Start
      2. 2.1.2 Test Points
      3. 2.1.3 Jumpers
  9. 3Implementation Results
    1. 3.1 Performance Data and Results
      1. 3.1.1 Efficiency, Load Regulation, and Dropout
      2. 3.1.2 Load Transients
      3. 3.1.3 Steady State
      4. 3.1.4 Line Transient
    2. 3.2 Thermal Images
  10. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 Board Layout
    3. 4.3 Bill of Materials
  11. 5Additional Information
    1. 5.1 Trademarks

2.1.3 Jumpers

See Table 3-2 for jumper descriptions. The following figure illustrates the jumper locations, as well as a possible configuration. See the data sheet for more information on switching frequency configuration.

Table 2-2 EVM Jumpers
Jumper Signal Description

J2

EN

 This jumper allows the ENABLE input to be connected to GND to disable the IC. By default, this jumper is left open since there is a pullup resistor R2 (RENT) to VIN to enable the IC.

J3

PGOOD

 This jumper is used to select how the PGOOD pin can be connected. A jumper can be used to connect pin 2 and 3. In this configuration, the PGOOD pin is pulled up to VOUT through R9 with a value of 100kΩ. If a jumper is used to connect pin 1 and 2, then the PGOOD pin is pulled up to an external voltage through R9. By default, this jumper has pin 2 and pin 3 connected.

J4

MODE

 Use this jumper to select the mode of operation in a MODE/SYNC trim part. Connecting a jumper between pin 1 and 2 cause the IC to operate in PFM (Pulse Frequency Modulation) mode for a higher efficiency at light load. A jumper between pin 2 and pin 3 causes the IC to operate in FPWM mode (Forced Pulse Width Modulation) mode.
RT In an RT trim part, connecting this jumper from pin 1 and 2 sets the switching frequency to 2.2MHz and connecting this jumper from pin 2 and 3 sets the switching frequency to 1MHz.
LMR36503MSCEEVM Jumper LocationsFigure 2-2 Jumper Locations