TPL5010 Datasheet, PDF (1/25 Pages) Texas Instruments – Supply Voltage from 1.8V to 5.5V

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TPL5010
SNAS651 – JANUARY 2015
TPL5010 Nano-power System Timer with Watchdog Function
1 Features
•1 Supply Voltage from 1.8V to 5.5V
• Current Consumption at 2.5V 35nA (typ)
• Selectable Time Intervals 100ms to 7200s
• Timer Accuracy 1% (typ)
• 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 a low power timer with a
watchdog feature ideal for system wake up in duty
cycled or battery powered applications. In such
systems the μC timer can be used for system wake-
up, but if the timer sleep current is high, up to 60-80%
of the total system current can be consumed by the
μC timer in this sleep mode. Consuming only 35nA,
the TPL5010 can replace the functionality of the
integrated μC timer and allow the μC to be placed in
a much lower power mode. Such power savings
enable the use of significantly smaller batteries
making it well suited for energy harvesting or wireless
sensor applications. The TPL5010 provides
selectable timing intervals from 100ms to 7200s 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.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPL5010
SOT23 (6)
3.00 mm x 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Simplified Application Schematic
Battery
VOUT
VIN
POWER MANAGEMENT
GND
R_EXT
TPL5010
VDD
GND
DELAY/
M_RST
RSTn
WAKE
DONE
µC
Rp
VDD
RSTn
GPIO
GPIO
GND
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.