LTC2926 - MOSFET-Controlled Power Supply Tracker
Features
- Flexible Power Supply Tracking and Sequencing
- Adjustable Ramp Rates, Offsets and Time Delays
- Controls Three Supplies with Series MOSFETs
- Integrated Remote Sense Switching
- FAULT Input/Output
- STATUS Output/Power Good Input
- Available in 20-Lead Narrow SSOP and 20-Lead QFN (4mm × 5mm) Packages
Typical Application
Description
The LTC2926 provides a simple solution for tracking and sequencing up to three power supply rails. An N-channel MOSFET and a few resistors per channel configure the load voltages to ramp up and down together, with voltage offsets, with time delays or with different ramp rates.
Automatic remote sense switching compensates for voltage drops across the MOSFETs. The LTC2926 provides two integrated switches as well as a signal to control optional additional external N-channel MOSFET sense switches.
The LTC2926 includes I/O signals for communication with other devices. The status output asserts after tracking and sequencing have completed. A low voltage on the power good input after an adjustable timeout period causes load disconnect. A low voltage on the fault I/O causes immediate load disconnect. Until it is reset, a fault latch prevents tracking and keeps the loads disconnected.
Packaging
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LTC2926CGN#PBF | SSOP-20 | GN | C | 05-08-1641 (GN20) | Yes |
| LTC2926CGN#TRPBF | SSOP-20 | GN | C | 05-08-1641 (GN20) | Yes |
| LTC2926CUFD#PBF | 4x5 QFN-20 | UFD | C | 05-08-1711 | Yes |
| LTC2926CUFD#TRPBF | 4x5 QFN-20 | UFD | C | 05-08-1711 | Yes |
| LTC2926IGN#PBF | SSOP-20 | GN | I | 05-08-1641 (GN20) | Yes |
| LTC2926IGN#TRPBF | SSOP-20 | GN | I | 05-08-1641 (GN20) | Yes |
| LTC2926IUFD#PBF | 4x5 QFN-20 | UFD | I | 05-08-1711 | Yes |
| LTC2926IUFD#TRPBF | 4x5 QFN-20 | UFD | I | 05-08-1711 | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTC2926CGN#PBF | SSOP-20 | C | $5.00 | $3.50 | Yes | |
| LTC2926CGN#TRPBF | SSOP-20 | C | $3.56 | Yes | ||
| LTC2926CUFD#PBF | 4x5 QFN-20 | C | $5.00 | $3.50 | Yes | |
| LTC2926CUFD#TRPBF | 4x5 QFN-20 | C | $3.50 | Yes | ||
| LTC2926IGN#PBF | SSOP-20 | I | $6.00 | $4.20 | Yes | |
| LTC2926IGN#TRPBF | SSOP-20 | I | $4.26 | Yes | ||
| LTC2926IUFD#PBF | 4x5 QFN-20 | I | $6.00 | $4.20 | Yes | |
| LTC2926IUFD#TRPBF | 4x5 QFN-20 | I | $4.26 | Yes | ||
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC948A | LTC2926 | MOSFET-Controller Pwr Supply Tracker | $50.00 | |
| Buy Now | |||
Applications
- VCORE and VI/O Supply Tracking
- Microprocessor, DSP and FPGA Supplies
- Servers
- Communications Systems
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Design Tools
LTspice
LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice
Models for the following parts are available in LTspice:
LTC2926
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
