LTC2952: Pushbutton PowerPath Controller with Supervisor Data Sheet9/20/2011282K
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
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.
- 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)
Demonstration circuit 1033B features the LTC2952, a micropower, multipurpose, pushbutton On/Off PowerPath™ controller that provides voltage monitoring and supervisory features, as well as ideal diode power paths. Selectable PowerPath management modes allow a variety of power on and off configurations, including pushbutton on/off control and voltage detection on/off control.
Documentation & Resources
R536 Reliability Data3/26/201849 K
DC1033B - Demo Manual5/13/2016417K
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|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|
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