LTC2952
RECOMMENDED FOR NEW DESIGNSPushbutton PowerPath Controller with Supervisor
- Part Models
- 8
- 1ku List Price
- Starting From $4.48
Overview
- 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.
Applications
- Desktop and Notebook Computers
- Portable Instrumentations
- Cell Phones, PDA and Handheld Computers
- Servers and Computer Peripherals
- Battery Backup Systems
Documentation
Data Sheet 1
User Guide 1
Technical Articles 2
Product Selector Card 1
Device Drivers 1
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 Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC2952CF#PBF | 20-Lead TSSOP | ||
| LTC2952CF#TRPBF | 20-Lead TSSOP | ||
| LTC2952CUF#PBF | 20-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | ||
| LTC2952CUF#TRPBF | 20-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | ||
| LTC2952IF#PBF | 20-Lead TSSOP | ||
| LTC2952IF#TRPBF | 20-Lead TSSOP | ||
| LTC2952IUF#PBF | 20-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | ||
| LTC2952IUF#TRPBF | 20-Lead QFN (4mm x 4mm x 0.75mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 14, 2025 - 25_0016 Bond Wire Change from Gold to Copper Wire (Notification Only) |
||
| LTC2952CF#PBF | PRODUCTION | |
| LTC2952CF#TRPBF | PRODUCTION | |
| LTC2952CUF#PBF | PRODUCTION | |
| LTC2952CUF#TRPBF | PRODUCTION | |
| LTC2952IF#PBF | PRODUCTION | |
| LTC2952IF#TRPBF | PRODUCTION | |
|
Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL |
||
| LTC2952CF#PBF | PRODUCTION | |
| LTC2952CF#TRPBF | PRODUCTION | |
| LTC2952IF#PBF | PRODUCTION | |
| LTC2952IF#TRPBF | PRODUCTION | |
|
Jan 20, 2022 - 21_0269 Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products |
||
| LTC2952CUF#PBF | PRODUCTION | |
| LTC2952CUF#TRPBF | PRODUCTION | |
| LTC2952IUF#PBF | PRODUCTION | |
| LTC2952IUF#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Device Drivers 1
Evaluation Software 0
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Hardware Ecosystem
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC2952
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.
Evaluation Kits
LTC2952 Demo Board | Push-Button Power Path Controller w/ Supervisor