D0

D1

TPL5000

D2

VDD

PGOOD

RSTn

WAKE

TCAL

GND

DONE

VIN

POWER MANAGEMENT

VOUT VBAT_OK

GND

Rp

100k

RST

µC

GPIO

GPIO

VDD

GPIO

GND

TPL5000

www.ti.com

SNAS628A – JULY 2013 – REVISED JULY 2013

TPL5000 Nano Power Programmable Timer with Watchdog Functionality

Check for Samples: TPL5000

1

FEATURES

DESCRIPTION

The TPL5000 is a long-term timer IC optimized for

•

Supply Voltage from1.8V to 5.0V

low power applications. The TPL5000 can replace a

•

Current Consumption 30nA (typ, at 2.5V)

micro controller's (µC) internal timer, allowing the µC

•

Watchdog Functionality

to stay in low power sleep mode instead of running a

timer, providing a total power consumption reduction

•

Reset Functionality

of 60 to 80%. The TPL5000 is designed for use in

•

Selectable Timer Intervals 1s to 64s

interrupt-driven applications and provides selectable

timing from 1 second to 64 seconds. Some Standards

APPLICATIONS

(i.e. EN50271) require implementation of a watchdog

function

for

safety.

The

TPL5000

realizes

this

•

Battery powered systems

watchdog

function

without

consuming

additional

•

Energy harvesting systems

power. The TPL5000 can also monitor a battery

•

Remote data-logger

management IC via a power-good digital input and

reset the µC if necessary. The device is packaged in

•

Sensor node

a 10-pin VSSOP package.

•

Building automation

•

Consumer electronic

•

Low power wireless

•

Safety and security platforms

Simplified Application Schematic

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.