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Features
- Fully Sequence and Monitor Four Supplies
- Six with Minimal External Circuitry
- Cascadable for Additional Supplies
- Power Off in Reverse Order or Simultaneously
- Charge Pump Drives External MOSFETs
- Drives Power Supply Shutdown Pins with No External Pull-Up Resistors
- 10µA Output Current Allows Soft-Starting of Supplies
- Done Indicator for Both Power On and Power Off
- Adjustable Time Delay Between Power Supplies
- Power Good Timer
- Power Supply Voltage Monitoring and Power Sequence Error Detection and Reporting
- Available in a 16-Lead Narrow SSOP Package
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The LTC2924 is a power supply sequencer designed for use with external N-channel MOSFETs or power supplies with shutdown pins. Four power supplies can be fully sequenced by a single LTC2924 and up to five supplies can be sequenced to a sixth master supply. The LTC2924 requires a minimum of external components, using only two feedback resistors per sequenced power supply and a single resistor to set hysteresis.
An internally regulated charge pump provides gate drive voltages for external logic and sub-logic-level MOSFETs. Adding a single capacitor enables an adjustable time delay between power supplies during both Power On and Power Off sequencing. A second capacitor can be added to enable a power good timer for detecting the failure of any power supply to turn on within the selected time. Errors in power supply sequencing and the control input are detected and reported at the FAULT output. The LTC2924 features precision input comparators which can provide 1% accuracy in monitoring power supply voltages.
Multiple LTC2924s may be easily cascaded to sequence a virtually unlimited number of power supplies.
Applications
- Sequenced Power Supplies for ASICs with Multiple I/O and Core Voltages
- Latch-Up Prevention in Systems with Multiple Power Supplies
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LTC2924
Documentation
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Documentation
Data Sheet 1
Reliability Data 1
User Guide 1
Design Note 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 |
|---|---|---|---|
| LTC2924CGN#PBF |
16-Lead SSOP (Narrow 0.15 Inch)
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| LTC2924CGN#TRPBF |
16-Lead SSOP (Narrow 0.15 Inch)
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| LTC2924IGN#PBF |
16-Lead SSOP (Narrow 0.15 Inch)
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| LTC2924IGN#TRPBF |
16-Lead SSOP (Narrow 0.15 Inch)
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- LTC2924CGN#PBF
- Pin/Package Drawing
-
16-Lead SSOP (Narrow 0.15 Inch)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
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SamacSys
- LTC2924CGN#TRPBF
- Pin/Package Drawing
-
16-Lead SSOP (Narrow 0.15 Inch)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- LTC2924IGN#PBF
- Pin/Package Drawing
-
16-Lead SSOP (Narrow 0.15 Inch)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- LTC2924IGN#TRPBF
- Pin/Package Drawing
-
16-Lead SSOP (Narrow 0.15 Inch)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
Filter by Model
Part Models
Product Lifecycle
PCN
Oct 11, 2022
- 22_0235
Epoxy Change from Henkel 8290 to 8290A for GN Package
LTC2924CGN#PBF
PRODUCTION
LTC2924CGN#TRPBF
PRODUCTION
LTC2924IGN#PBF
PRODUCTION
LTC2924IGN#TRPBF
PRODUCTION
Apr 6, 2022
- 22_0066
Laser Top Mark for 16QSOP Assembled in ADPG [PNG]
LTC2924CGN#PBF
PRODUCTION
LTC2924CGN#TRPBF
PRODUCTION
LTC2924IGN#PBF
PRODUCTION
LTC2924IGN#TRPBF
PRODUCTION
Filter by Model
Part Models
Product Lifecycle
PCN
Oct 11, 2022
- 22_0235
Epoxy Change from Henkel 8290 to 8290A for GN Package
LTC2924CGN#PBF
PRODUCTION
LTC2924CGN#TRPBF
PRODUCTION
LTC2924IGN#PBF
PRODUCTION
LTC2924IGN#TRPBF
PRODUCTION
Apr 6, 2022
- 22_0066
Laser Top Mark for 16QSOP Assembled in ADPG [PNG]
LTC2924CGN#PBF
PRODUCTION
LTC2924CGN#TRPBF
PRODUCTION
LTC2924IGN#PBF
PRODUCTION
LTC2924IGN#TRPBF
PRODUCTION
Software & Part Ecosystem
| Parts | Product Life Cycle | Description | ||
|---|---|---|---|---|
|
Digital Power System Managers1 |
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RECOMMENDED FOR NEW DESIGNS |
4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement |
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Evaluation Kits 1
DC818A
LTC2924 Quad Supply Sequencer
Product Detail
DC818A: Demo Board for the LTC2924 Quad Power Supply Sequencer.
Resources
Evaluation Kits1
Tools & Simulations 1
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.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
Lt Spice
