LTC2950 - Push Button On/Off Controller


  • Adjustable Pushbutton On/Off Timers
  • Low Supply Current: 6μA
  • Wide Operating Voltage Range: 2.7V to 26.4V
  • EN Output (LTC2950-1) Allows DC/DC Converter Control
  • EN Output (LTC2950-2) Allows Circuit Breaker Control
  • Simple Interface Allows Graceful μP Shut Down
  • High Input Voltage PB Pin with Internal Pull Up Resistor
  • ±10kV ESD HBM on PB Input
  • Accurate 0.6V Threshold on KILL Comparator Input
  • 8-Pin 3mm × 2mm DFN and ThinSOT™ Packages

Typical Application

LTC2950 Typical Application
LTC2950 Typical Application


The LTC2950 is a micropower, wide input voltage range, pushbutton ON/OFF controller. The part contains a pushbutton input with independently programmable ON and OFF debounce times that control the toggling of an open drain enable output. The part also contains a simple microprocessor interface to allow for proper system housekeeping prior to power down. Under system fault conditions, an internal KILL timer ensures proper power down.

The LTC2950 operates over a wide 2.7V to 26.4V input voltage range to accommodate a wide variety of input power supplies. Very low quiescent current (6μA typical) makes the LTC2950 ideally suited for battery powered applications. Two versions of the part are available to accommodate either positive or negative enable polarities. The parts are available in either 8-lead 3mm × 2mm DFN or ThinSOT packages.


CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
LTC2950CDDB-1#PBF 3x2 DFN-8 DDB C 05-08-1702 Yes
LTC2950CDDB-1#TRMPBF 3x2 DFN-8 DDB C 05-08-1702 Yes
LTC2950CDDB-1#TRPBF 3x2 DFN-8 DDB C 05-08-1702 Yes
LTC2950CDDB-2#PBF 3x2 DFN-8 DDB C 05-08-1702 Yes
LTC2950CDDB-2#TRMPBF 3x2 DFN-8 DDB C 05-08-1702 Yes
LTC2950CDDB-2#TRPBF 3x2 DFN-8 DDB C 05-08-1702 Yes
LTC2950CTS8-1#PBF SOT-23 TS8 C 05-08-1637 Yes
LTC2950CTS8-1#TRMPBF SOT-23 TS8 C 05-08-1637 Yes
LTC2950CTS8-1#TRPBF SOT-23 TS8 C 05-08-1637 Yes
LTC2950CTS8-2#PBF SOT-23 TS8 C 05-08-1637 Yes
LTC2950CTS8-2#TRMPBF SOT-23 TS8 C 05-08-1637 Yes
LTC2950CTS8-2#TRPBF SOT-23 TS8 C 05-08-1637 Yes
LTC2950IDDB-1#PBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LTC2950IDDB-1#TRMPBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LTC2950IDDB-1#TRPBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LTC2950IDDB-2#PBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LTC2950IDDB-2#TRMPBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LTC2950IDDB-2#TRPBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LTC2950ITS8-1#PBF SOT-23 TS8 I 05-08-1637 Yes
LTC2950ITS8-1#TRMPBF SOT-23 TS8 I 05-08-1637 Yes
LTC2950ITS8-1#TRPBF SOT-23 TS8 I 05-08-1637 Yes
LTC2950ITS8-2#PBF SOT-23 TS8 I 05-08-1637 Yes
LTC2950ITS8-2#TRMPBF SOT-23 TS8 I 05-08-1637 Yes
LTC2950ITS8-2#TRPBF SOT-23 TS8 I 05-08-1637 Yes

LTC2950 Package Drawing
LTC2950 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
LTC2950CDDB-1#PBF 3x2 DFN-8 C $2.59 Yes
LTC2950CDDB-1#TRMPBF 3x2 DFN-8 C $2.59 $1.86 Yes
LTC2950CDDB-1#TRPBF 3x2 DFN-8 C $2.59 $1.81 Yes
LTC2950CDDB-2#PBF 3x2 DFN-8 C $2.59 Yes
LTC2950CDDB-2#TRMPBF 3x2 DFN-8 C $2.59 $1.86 Yes
LTC2950CDDB-2#TRPBF 3x2 DFN-8 C $2.59 $1.81 Yes
LTC2950CTS8-1#PBF SOT-23 C $2.59 Yes
LTC2950CTS8-1#TRMPBF SOT-23 C $2.59 $1.86 Yes
LTC2950CTS8-1#TRPBF SOT-23 C $2.59 $1.81 Yes
LTC2950CTS8-2#PBF SOT-23 C $2.59 Yes
LTC2950CTS8-2#TRMPBF SOT-23 C $2.59 $1.86 Yes
LTC2950CTS8-2#TRPBF SOT-23 C $2.59 $1.81 Yes
LTC2950IDDB-1#PBF 3x2 DFN-8 I $3.04 Yes
LTC2950IDDB-1#TRMPBF 3x2 DFN-8 I $3.04 $2.21 Yes
LTC2950IDDB-1#TRPBF 3x2 DFN-8 I $3.04 $2.16 Yes
LTC2950IDDB-2#PBF 3x2 DFN-8 I $3.04 Yes
LTC2950IDDB-2#TRMPBF 3x2 DFN-8 I $3.04 $2.21 Yes
LTC2950IDDB-2#TRPBF 3x2 DFN-8 I $3.04 $2.16 Yes
LTC2950ITS8-1#PBF SOT-23 I $3.04 Yes
LTC2950ITS8-1#TRMPBF SOT-23 I $3.04 $2.21 Yes
LTC2950ITS8-1#TRPBF SOT-23 I $3.04 $2.16 Yes
LTC2950ITS8-2#PBF SOT-23 I $3.04 Yes
LTC2950ITS8-2#TRMPBF SOT-23 I $3.04 $2.21 Yes
LTC2950ITS8-2#TRPBF SOT-23 I $3.04 $2.16 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC826C-A LTC2950CTS8-2 Demo Board | Pushbutton On/Off Controller, 2.7V ≤ VIN ≤ 26.4V $25.00
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