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LTC2952: Pushbutton PowerPath Controller with Supervisor Data Sheet9/20/2011PDF282K
Overview
Features and Benefits
- Pushbutton On/Off Control
- Automatic Low Loss Switchover Between DC Sources
- Wide Operating Voltage Range: 2.7V to 28V
- Low 25μA Shutdown Current
- Guaranteed Threshold Accuracy: ±1.5% of Monitored Voltage Over Temperature
- Adjustable Pushbutton On/Off Timers
- Simple Interface Allows Graceful μP Shutdown
- Extendable Housekeeping Wait Time Prior to Shutdown
- 200ms Reset Delay and 1.6s Watchdog Timeout
- ±8kV HBM ESD on PB Input
- 20-pin TSSOP and QFN (4mm × 4mm) Packages
Product Details
The LTC2952 is a power management device that features three main functions: pushbutton on/off control of system power, ideal diode PowerPath™ controllers and system monitoring. The LTC2952’s pushbutton input, which provides on/off control of system power, has independently adjustable ON and OFF debounce times. A simple microprocessor interface involving an interrupt signal allows for proper system housekeeping prior to power-down.
The ideal diode PowerPath controllers provide automatic low loss switchover between two DC sources by regulating two external P-channel MOSFETs to have a small 20mV forward drop.
High reliability systems may utilize the LTC2952’s monitoring features to ensure system integrity. These features include: power-fail, voltage monitoring and μP watchdog.
The LTC2952 operates over a wide operating voltage range to accommodate a large variety of input power supplies. The part’s combination of low 20mV external MOSFET regulation and very low standby current matches battery powered and power conscious application requirements.
Applications
- Desktop and Notebook Computers
- Portable Instrumentations
- Cell Phones, PDA and Handheld Computers
- Servers and Computer Peripherals
- Battery Backup Systems
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 Data3/26/2018PDF49 K
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DC1033B - Demo Manual5/13/2016PDF417K
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Pushbutton Controllers1/8/2015PDF331K
Tools & Simulations
LTspice
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Models for the following parts are available in LTspice:
LTC2952
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 |
|---|---|---|---|---|
| LTC2952CF#PBF | Material Declaration | Reliability Data | 20-Lead TSSOP | |
| LTC2952CF#TRPBF | Material Declaration | Reliability Data | 20-Lead TSSOP | |
| LTC2952CUF#PBF | Material Declaration | Reliability Data | 20-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | |
| LTC2952CUF#TRPBF | Material Declaration | Reliability Data | 20-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | |
| LTC2952IF#PBF | Material Declaration | Reliability Data | 20-Lead TSSOP | |
| LTC2952IF#TRPBF | Material Declaration | Reliability Data | 20-Lead TSSOP | |
| LTC2952IUF#PBF | Material Declaration | Reliability Data | 20-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | |
| LTC2952IUF#TRPBF | Material Declaration | Reliability Data | 20-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | |
| Wafer Fabrication Data | R536 Reliability Data |
PCN-PDN Information
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Support & Discussions
LTC2952 Discussions
Sample & Buy
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Evaluation Boards
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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.