LP5910 and TPS61221 as Power Reference Design for devices Interacting with Ultra-Low Voltage MSP430
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.

Description & Features

Technical documentation

Support & Training

Order Now

See the Important Notice and Disclaimer covering reference designs and other TI resources.

Key Document


The MSP430X09X can operate form ultra-low voltages (ULV) in the range of 0.9V to 1.65V; however most of the devices in the system requires higher voltages. TIDA-00599 provides a solution for those companion devices that requires 1.8V and 3.3V input voltages.

A 3.3V voltage rail is generated from a 0.9V to 1.65 V batteries using the TPS61221 boost converter and a 1.8V voltage rail is generated using a high PSRR LDO (LP5910) connected in series with the boost converter output voltage rail. The combine output current is 100 mA at 1.65V input voltage and 50 mA at 0.90 V input voltage.

This power solution is deal to power sensors and peripherals from the same ultra-low voltage source powering the MSP430 family line.

  • Power management for devices interacting with the ultra-low voltage µController family (MSP430X09X) from a 0.9 V to 1.65 V single battery cell
  • Generates 1.8V and 3.3V voltage rails from an ultra-low voltage source
  • Combine output current
    • 50mA at 0.9V input voltage
    • 100mA at 1.65V input voltage
  • Ripple free and low noise 1.8 V voltage rail
  • Small solution size, with minimum compensation components
  • Cost efficient solution
  • TIDA-00599 provides design guide and design files of the power management solution

See the Important Notice and Disclaimer covering reference designs and other TI resources.


Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Design Guide

Get results faster with test and simulation data that's been verified.

Download Design Guide

Design Files

Download ready-to-use system files to speed your design process. Get Viewer.

Download Design Files

TI Devices (3)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LP5910  300-mA, low-noise, low-IQ, low-dropout voltage regulator with reverse current protection & enable  Power management  Sample & Buy View Design Kits & Evaluation Modules
MSP430L092  4 MHz MCU with 2KB ROM, 2KB SRAM, 8-bit ADC, 8-bit DAC, comparator, timer   Microcontrollers (MCUs)  Sample & Buy View Design Kits & Evaluation Modules
TPS61221  0.7-VIN, 3.3-V fixed output voltage boost converter with 5.5-μA quiescent current  Step-up (boost) regulators  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LP5910 Download -
Download Download
MSP430L092 Download Download
TPS61221 Download Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Step 1: Download and install the free download.

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.

Technical documentation

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guide (1)
Title Type Size (KB) Date
PDF 1224 23 Jun 2015
Design files (4)
Title Type Size (KB) Date
ZIP 1625 01 Oct 2015
PDF 442 01 Oct 2015
PDF 205 01 Oct 2015
PDF 114 01 Oct 2015

Support & training

TI E2E™ forums with technical support from TI engineers

Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.

Search answers from TI experts

Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.

If you have questions about quality, packaging, or ordering TI products visit our Support page.

Technical articles