LTC2953
Push Button On/Off Controller with Voltage Monitoring
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Overview
Features and Benefits
- Wide Operating Voltage Range: 2.7V to 27V
- Push Button Control of System Power
- Low Supply Current: 14µA
- Power Fail Comparator Generates Warning
- UVLO Comparator Gracefully Latches Power Off
- Adjustable Supply Monitor with 200ms Reset
- Adjustable Power Down Timer
- Low Leakage EN Output (LTC2953-1) Allows DC/DC Converter Control
- High Voltage EN Output (LTC2953-2) Allows Circuit Breaker Control
- Simple Interface Allows Orderly System Power Up and Power Down
- ±1.5% Threshold Tolerances
- ±10kV ESD HBM on PB Input
- 12-Pin 3mm x 3mm DFN
Product Details
The LTC2953 is a push button On/Off controller that manages system power via a push button interface. An enable output toggles system power while an interrupt output provides debounced push button status. The interrupt output can be used in menu driven applications to request a system power down.
The LTC2953 also features input and output power supply monitors. An uncommitted power fail comparator provides real time input monitor information, while a de-glitched under voltage lockout comparator gracefully initiates a system power down. The under voltage lockout comparator prevents the system from powering from a low power supply.
The adjustable supply monitor input is compared against an accurate internal 0.5V reference. The reset output remains low until the supply monitor input has been in compliance for 200ms.
The LTC2953 operates over a wide 2.7V to 27V input voltage range and draws only 14µA of current. Two versions of the part accommodate either positive or negative enable polarities.
Applications
- Push Button Power Path Control
- Battery Power Supervisor
- Portable Instrumentation, PDA
- Blade Servers
- Desktop and Notebook Computers
Product Categories
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Documentation & Resources
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R536 Reliability Data3/26/2018
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DC1099A - Demo Manual9/24/2009
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Pushbutton Controllers1/8/2015
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
LTC2953-1
LTC2953-2
Product Recommendations
LTC2953 Companion Parts
Recommended Suggested Oscillator
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| LTC2953CDD-1#PBF | Material Declaration | Reliability Data | 12-Lead DFN (3mm x 3mm w/ EP) | |
| LTC2953CDD-1#TRPBF | Material Declaration | Reliability Data | 12-Lead DFN (3mm x 3mm w/ EP) | |
| LTC2953CDD-2#PBF | Material Declaration | Reliability Data | 12-Lead DFN (3mm x 3mm w/ EP) | |
| LTC2953CDD-2#TRPBF | Material Declaration | Reliability Data | 12-Lead DFN (3mm x 3mm w/ EP) | |
| LTC2953IDD-1#PBF | Material Declaration | Reliability Data | 12-Lead DFN (3mm x 3mm w/ EP) | |
| LTC2953IDD-1#TRPBF | Material Declaration | Reliability Data | 12-Lead DFN (3mm x 3mm w/ EP) | |
| LTC2953IDD-2#PBF | Material Declaration | Reliability Data | 12-Lead DFN (3mm x 3mm w/ EP) | |
| LTC2953IDD-2#TRPBF | Material Declaration | Reliability Data | 12-Lead DFN (3mm x 3mm w/ EP) | |
| Wafer Fabrication Data | R536 Reliability Data |
Sample & Buy
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Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
(*)The 1Ku 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 Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Lead Times
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Sampling
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.