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Application NoteNxp

MCX W23 Bluetooth Low Energy Power Consumption Analysis

Power consumption analysis for the MCX W23 Bluetooth LE SoC, detailing measurement procedures and low-power modes for MCXW23_EVK_BB and MCXW236B_RDM boards.

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Overview

This application note provides a detailed analysis of the power consumption for the NXP MCX W23 Bluetooth Low Energy (LE) system-on-chip. It outlines procedures for measuring current consumption using the MCXW23_EVK_BB evaluation kit and MCXW236B_RDM reference design board. The document describes system operation cycles and various low-power states for the CM33 MCU core and radio transceiver, including Sleep, Deep-sleep, and Power-down modes. Additionally, it examines Bluetooth LE advertising and connection events, and details power supply configurations such as High-voltage supply mode (HV_SM) and External regulated supply mode (XR_SM) to support battery-operated IoT and body-worn device designs.

Use Cases

  • Optimizing battery life in IoT and wearable devices
  • Measuring current consumption for Bluetooth LE applications
  • Configuring MCX W23 power supply and transmitter modes
  • Analyzing system-level power efficiency for wireless SoCs

Topics

MCX W23
Bluetooth Low Energy
Power Consumption
NHS5204
MCXW236B
Current Measurement
IoT
Low-Power Modes
RF Power Analysis
NXP

Referenced Parts

MCXW23

NXP Semiconductors

The MCX W23 is a system-on-chip (SoC), which incorporates the microcontroller unit (MCU) circuitry and an RF circuitry.

MCXW236B

NXP Semiconductors

measure the current consumption using the MCXW23_EVK_BB and MCXW236B_RDM boards.

NHS5204

NXP Semiconductors

Keywords AN14659, MCX W23, MCU link, Bluetooth Low Energy, Bluetooth LE, Average power, Average current, Power consumption, NHS5204

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CUI

circuitry3

MCX W23 Bluetooth Low Energy Power Consumption Analysis | Design Resources