DocumentationDatasheet
Reliability Data
LT Journal
Press Release
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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.
4x5 QFN-20,SSOP-20
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC2926CGN#PBF | SSOP | 20 | C | $5.00 | $3.50 |
| LTC2926CGN#TRPBF | SSOP | 20 | C | $3.56 | |
| LTC2926CUFD#PBF | QFN | 20 | C | $5.00 | $3.50 |
| LTC2926CUFD#TRPBF | QFN | 20 | C | $3.50 | |
| LTC2926IGN#PBF | SSOP | 20 | I | $6.00 | $4.20 |
| LTC2926IGN#TRPBF | SSOP | 20 | I | $4.26 | |
| LTC2926IUFD#PBF | QFN | 20 | I | $6.00 | $4.20 |
| LTC2926IUFD#TRPBF | QFN | 20 | I | $4.26 | |
| LTC2926CGN | SSOP | 20 | C | $10.00 | $7.00 |
| LTC2926CGN#TR | SSOP | 20 | C | $7.12 | |
| LTC2926IGN | SSOP | 20 | I | $12.00 | $8.40 |
| LTC2926IGN#TR | SSOP | 20 | I | $8.52 | |
| LTC2926CUFD | QFN | 20 | C | $10.00 | $7.00 |
| LTC2926CUFD#TR | QFN | 20 | C | $7.00 | |
| LTC2926IUFD | QFN | 20 | I | $12.00 | $8.40 |
| LTC2926IUFD#TR | QFN | 20 | I | $8.52 |
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 |