TPS3423_V02中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? Operating voltage range: 1V to 6V

? Nano supply current: 18nA (typical)

? HBM ESD rating on push-button pin: ±8kV

? Programmable short press and long press duration

– TPS3423, TPS3424 fixed timing options:

? Short press duration: 50msec to 13sec

? Long press duration: 1sec to 30sec

? Timer accuracy (maximum): ±10 %

– TPS3424: user-programmable option (50msec

to 50sec) through external capacitor

? Output configurations:

– RESET configurations:

? Push-pull / open-drain, active high / low

? Latched / non-latched

? 100msec to 1sec pulse option for nonlatched

version

– INT configurations:

? open drain, active low

? non-latched (100msec to 1sec pulse

duration)

? Kill feature: enables host to control the RESET

output

? Available in pin compatible 8 pin and 6 pin DRL

package

2 Applications

? Wearables

? Gaming consoles

? Home theater entertainment

? Printers

? Health care

? Portable electronics

? Factory automation & control

3 Description

TPS3423 and TPS3424 are push-button controllers

which offer wide range of independent detection

of short press and long press functionality. These

devices offer up to two outputs per push-button

(RESET and INT), which can be used for various

use cases including enabling the voltage regulator

or circuit breakers, generating a monoshot for given

press duration and sending an interrupt to micro

controller. The device generates an interrupt pulse

both for short press and long press notifying the micro

controller. RESET output changes the state based on

the device configuration.

The extreme low power consumption 18nA helps

to improve product shelf life for battery powered

devices. The device keeps the power tree disabled

until required button press is detected. This feature is

known as battery freshness seal.

TPS3423/4 are offered in fixed timing options for short

and long press durations. To provide flexibility to the

designer, TPS3424 also offers user-programmable

short and long press durations through an external

capacitor. Kill pin in TPS3424 enables feedback

from the microcontroller to asynchronously de-assert

RESET.