LTC2923
LTC2923
RECOMMENDED FOR NEW DESIGNSPower Supply Tracking Controller
- Part Models
- 8
- 1ku List Price
- Starting From $4.92
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Overview
- Flexible Power Supply Tracking
- Tracks Both Up and Down
- Power Supply Sequencing
- Supply Stability is Not Affected
- Controls Two Supplies Without Series FETs
- Controls a Third Supply With a Series FET
- Adjustable Ramp Rates
- Electronic Circuit Breaker
- Available in 10-Lead MS and 12-Lead (4mm × 3mm) DFN Packages
The LTC2923 provides a simple solution to power supply tracking and sequencing requirements. By selecting a few resistors, the supplies can be configured to ramp-up and ramp-down together or with voltage offsets, time delays or different ramp rates.
By introducing currents into the feedback nodes of two independent switching regulators, the LTC2923 causes their outputs to track without inserting any pass element losses. Because the currents are controlled in an openloop manner, the LTC2923 does not affect the transient response or stability of the supplies. Furthermore, it presents a high impedance when power-up is complete, effectively removing it from the DC/DC circuit.
For systems that require a third supply, one supply can be controlled with a series FET. This optional series FET can also control a supply that does not allow direct access to its feedback resistors (e.g., a power module) or a supply whose output cannot be forced to ground (e.g., a 3-terminal linear regulator). When the FET is used, an electronic circuit breaker provides protection from short-circuit conditions.
Applications
- VCORE and VI/O Supply Tracking
- Microprocessor, DSP and FPGA Supplies
- Servers
- Communication Systems
Documentation
Data Sheet 1
User Guide 1
Design Note 1
Technical Articles 5
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 |
|---|---|---|---|
| LTC2923CDE#PBF | 12-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC2923CDE#TRPBF | 12-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC2923CMS#PBF | 10-Lead MSOP | ||
| LTC2923CMS#TRPBF | 10-Lead MSOP | ||
| LTC2923IDE#PBF | 12-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC2923IDE#TRPBF | 12-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC2923IMS#PBF | 10-Lead MSOP | ||
| LTC2923IMS#TRPBF | 10-Lead MSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 5, 2024 - 24_0004 Epoxy Change from Henkel 8290 to 8290A for MSOP (3) |
||
| LTC2923CMS#PBF | PRODUCTION | |
| LTC2923CMS#TRPBF | PRODUCTION | |
| LTC2923IMS#PBF | PRODUCTION | |
| LTC2923IMS#TRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0130 Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC2923CMS#PBF | PRODUCTION | |
| LTC2923CMS#TRPBF | PRODUCTION | |
| LTC2923IMS#PBF | PRODUCTION | |
| LTC2923IMS#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Power System Management (PSM) & Sequencers 1 | ||
| LTC2974 | RECOMMENDED FOR NEW DESIGNS | 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement |
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC2923
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
LTC2923CMS10 | Power Supply Tracking and Sequencing Controller
Resources
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