Smart push-button on/off controller

The SRC0 devices monitor the state of connected push-button(s) as well as sufficient supply voltage. An enable output controls power for the application through the MOSFET transistor, DC-DC converter, regulator, etc. If the supply voltage is above a precise voltage threshold, the enable output can be asserted by a simple press of the button. Factory-selectable supply voltage thresholds are determined by highly accurate and temperature-compensated references. An interrupt is asserted by pressing the push-button during normal operation and can be used to request a system power-down. The interrupt is also asserted if undervoltage is detected. By a long push of one button (PB) or two buttons (PBand SR) either a reset is asserted or power for the application is disabled depending on the option used.

The device also offers additional features such as precise 1.5 V voltage reference with very tight accuracy of 1%, separate output indicating undervoltage detection and separate output for distinguishing between interrupt by push-button or undervoltage.

The device consumes very low current of 6 μA during normal operation and only 0.6 μA current during standby.

The SRC0 is available in the TDFN12 package and is offered in several options among features such as selectable threshold, hysteresis, timeouts, output types, etc.

Key Features

  • Operating voltage 1.6 V to 5.5 V
  • Low standby current of 0.6 μA
  • Adjustable Smart Reset assertion delay time driven by external CSRD
  • Power-up duration determined primarily by push-button press
  • Debounced PBand SRinputs
  • PBand SRESD inputs withstand voltage up to ±15 kV (air discharge) ±8 kV (contact discharge)
  • Active high or active low enable output option (ENor EN) provides control of MOSFET, DC-DC converter, regulator, etc.
  • Secure startup, interrupt, Smart Reset or power-down driven by push-button
  • Precise 1.5 V voltage reference with 1% accuracy
  • Industrial operating temperature -40 to +85 °C
  • Available in TDFN12 2 x 3 mm package

Design

Technical Documentation

Product Specifications
Description Version Size
DS10214 DS10214: Smart push-button on/off controller with Smart Reset™ and power-on lockout 2.0 1 MB

Presentations & Training Material

Presentations
Description Version Size
ST offering in Wearable - Analog and Mixed Signal Portfolio 3.0 1 MB




Sample & Buy

Part Number Marketing Status Quantity Unit Price (US$) * Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
SRC0GS22D Active 1000 0.91 DFN12 2X3X0.75 Tape And Reel - - NEC EAR99 MALAYSIA MORE INFO DISTRIBUTOR AVAILABILITY
SRC0CS25D Active 1000 0.91 DFN12 2X3X0.75 Tape And Reel - - NEC EAR99 MALAYSIA MORE INFO DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
SRC0GS22D ActiveDFN12 2X3X0.75IndustrialNot compliant
SRC0CS25D ActiveDFN12 2X3X0.75IndustrialNot compliant
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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