1 Features
1• Supply Voltage From 1.8 V to 5.5 V
• Current Consumption at 2.5 V and 35 nA (Typical)
• Selectable Time Intervals: 100 ms to 7200 s
• Timer Accuracy: 1% (Typical)
• Resistor Selectable Time Interval
• Watchdog Functionality
• Manual Reset

2 Applications
• Battery-Powered Systems
• Internet of Things (IoT)
• Intruder Detection
• Tamper Detection
• Home Automation Sensors
• Thermostats
• Consumer Electronics
• Remote Sensors
• White Goods

3 Description
The TPL5010 Nano Timer is an ultra-low power timer
with a watchdog feature designed for system wake up
in duty-cycled, battery-powered applications such as
those in IoT. Many of these applications require the
use of a μC, so it is desirable to keep the μC in a low
power mode to maximize current savings, waking up
only during certain time intervals to collect data or
service an interrupt. Although the internal timer of the
μC can be used for system wake-up, it can singlehandedly
consume microamps of total system
current.
Consuming only 35 nA, the TPL5010 can replace the
functionality of the integrated μC timer. This allows
the μC to be placed in a much lower power mode,
with the internal timer off, returning only to active
mode upon an interrupt by the TPL5010. By offering
power savings of almost two orders of magnitude, the
TPL5010 enables the use of significantly smaller
batteries for energy harvesting or wireless sensor
applications. The TPL5010 provides selectable timing
intervals from 100 ms to 7200 s and is designed for
interrupt-driven applications. Some standards (such
as EN50271) require implementation of a watchdog
for safety and the TPL5010 realizes this watchdog
function at almost no additional power consumption.
The TPL5010 is available in a 6-pin SOT23 package.