Ultra Low Power System Timer (35 nA) for Power Gating in duty cycled applications


Product details


VCC (Min) (V) 1.8 VCC (Max) (V) 5.5 Iq (Typ) (uA) 0.035 Features Low-power timer, MOS-driver, Manual reset, One-shot feature, Programmable delay range Rating Catalog Operating temperature range (C) -40 to 105 open-in-new Find other Real-time clocks (RTCs) & timers

Package | Pins | Size

SOT-23-THN (DDC) 6 5 mm² 2.9 x 1.6 open-in-new Find other Real-time clocks (RTCs) & timers


  • Selectable Time Intervals: 100 ms to 7200 s
  • Timer Accuracy: 1% (Typical)
  • Current Consumption at 2.5 V and 35 nA (Typical)
  • Resistor Selectable Time Interval
  • Manual Power-On Input
  • One-Shot Feature
  • Supply Voltage Range: 1.8 V to 5.5 V

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The TPL5111 Nano Timer is a low-power system timer designed for power gating in duty cycled or battery-powered applications. Consuming only 35 nA, the TPL5111 can be used to enable and disable the power supply for a micro-controller or other system device, drastically reducing the overall system stand-by current during the sleep time. This power saving enables the use of significantly smaller batteries for energy harvesting or wireless sensor applications. The TPL5111 provides selectable timing intervals from 100 ms to 7200 s. In addition, the TPL5111 has a unique one-shot feature where the timer will only assert its enable pulse for one cycle. The TPL5111 is available in a 6 -
pin SOT23 package.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet TPL5111 Nano-Power System Timer for Power Gating datasheet (Rev. B) Sep. 27, 2018
White paper How to optimize building and home automation designs for energy efficiency Apr. 08, 2020
Technical articles Experience seamless shopping thanks to electronic shelf labels Oct. 10, 2018
Application note Power Cycling an IoT System with a Nano-power System Timer Dec. 05, 2016
Technical articles How LDOs contribute to power efficiency May 13, 2016
Technical articles How to use boost converters in wireless sensor nodes Oct. 06, 2015
User guide TPL5111 Evaluation Module User's Guide Jul. 09, 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development


The TPL5111EVM evaluation module enables the user to evaluate the TPL5111 performance and functionality. The EVM can operated in standalone mode, or connected to uC system for prototyping and evaluation, or to an MSP430 Launchpad for prototyping and evaluation. The timer interval can be configured (...)

  • Accessible signals for easy interface to uC systems for evaluation and prototyping
  • Easily configurable timer interval, using on-board resistors
  • Easy measurement of TPL5111 current consumption
  • Battery powered (optional)

Design tools & simulation

SNAM172.ZIP (116 KB) - IBIS Model
SNAM175.ZIP (140 KB) - IBIS Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

参考设计 Download
Humidity & Temp Sensor Node for Sub-1GHz Star Networks Enabling 10+ Year Coin Cell Battery Life
TIDA-00484 The TIDA-00484 TI Design uses Texas Instruments' nano-power system timer, boost converter, SimpleLink™ ultra-low power Sub-1 GHz wireless microcontroller (MCU) platform, and humidity sensing technologies to demonstrate an ultra-low power method to duty-cycle sensor end nodes leading to (...)
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参考设计 Download
Humidity & Temperature Sensor Node Reference Design Enabling Sub-1 GHz and Sensor-to-Cloud Networks
TIDA-01477 — This reference design demonstrates how to create an industrial sensor-to-cloud end node capable of connecting to an IoT network gateway and a cloud data provider. This sensor node reference design uses Texas Instruments' nano-power system timer for power gating, low Iq boost converter (...)
document-generic Schematic
参考设计 Download
Always-on Low-power Gas Sensing with 10+ Year Coin Cell Battery Life Reference Design
TIDA-00756 — The TIDA-00756 TI Design uses nano-power operational amplifiers, comparators, system timers, temperature sensors, and the SimpleLink™ ultra-low power 2.4-GHz wireless microcontroller (MCU) platform to demonstrate an ultra-low power carbon monoxide detector implementation. These (...)
document-generic Schematic
参考设计 Download
Humidity & Temp Sensor Node for Star Networks Enabling 10+ Year Coin Cell Battery Life Ref Design
TIDA-00374 This TI Design uses Texas Instruments nano-power system timer, SimpleLink™ ultra-low power wireless microcontroller (MCU) platform, and humidity sensing technologies to demonstrate an ultra-low power method to duty-cycle sensor end nodes. These technologies lead to an extremely long battery (...)
document-generic Schematic
参考设计 Download
Power Cycling Reference Design to Extend Battery Life Using an Ultra-Low IQ LDO and Nano Timer
TIDA-00720 The TIDA-00720 reference design shows a method to extend battery life by power cycling. The power cycling concept consist in time interval period that enables the power management devices for just enough time for the microcontroller to execute the program, transmit data or collect data. Some of the (...)
document-generic Schematic

CAD/CAE symbols

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SOT-23-THIN (DDC) 6 View options

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