LT4180 - Virtual Remote Sense Controller
Features
- Tight Load Regulation with Highly Resistive Cables without Requiring Remote Sense Wiring
- Compatible with Isolated and Nonisolated Power Supplies
- ±1% Internal Voltage Reference
- 5mA Sink Current Capability
- Soft-Correct Reduces Turn-On Transients
- Undervoltage and Overvoltage Protection
- Pin-Programmable Dither Frequency
- Optional Spread Spectrum Dither
- Wide VIN Range: 3.1V to 50V
- 24-Pin SSOP Package
Typical Application
Description
The LT4180 solves the problem of providing tight load regulation over long, highly resistive cables without requiring an additional pair of remote sense wires. This Virtual Remote Sense device continuously interrogates the line impedance and corrects the power supply output voltage via its feedback loop to maintain a steady voltage at the load regardless of current changes.
The LT4180 is a full-featured controller with 5mA optoisolator sink capability, under/overvoltage lockout, soft-start and a ±1% internal voltage reference. The Virtual Remote Sense feature set includes user-programmable dither frequency and optional spread spectrum dither.
The LT4180 works with any topology and type of isolated or nonisolated power supply, including DC/DC converters and adjustable linear regulators.
The LT4180 is available in a 24-pin, SSOP package.
Packaging
For complete and up to date package information and drawings, please refer to our packaging page
SSOP-24
Order Info
- Part numbers ending in PBF are lead free. Please contact LTC marketing for information on lead based finish parts.
- 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 | Pins | Temp | Price (1-99) | Price (1k)* | RoHS Data |
|---|---|---|---|---|---|---|
| LT4180EGN#PBF | SSOP | 24 | E | $4.22 | $2.95 | View |
| LT4180EGN#TRPBF | SSOP | 24 | E | $3.01 | View | |
| LT4180IGN#PBF | SSOP | 24 | I | $4.87 | $3.41 | View |
| LT4180IGN#TRPBF | SSOP | 24 | I | $3.47 | View | |
| LT4180MPGN#PBF | SSOP | 24 | MP | $11.26 | $7.88 | View |
| LT4180MPGN#TRPBF | SSOP | 24 | MP | $7.94 | View | |
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology demo boards are offered free of charge to qualified customers. Contact your local sales office or distributor to request 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 |
|---|---|---|---|
| DC1504A | LT4180EGN Demo Board u VIN= 8V to 36V, VOUT1 = 5V @ 3A | Contact Factory | |
| Buy Now | |||
Applications
- 12V High Intensity Lamps
- 28V Industrial Systems
- High Power (>40 Watts) CAT5 Cable Systems
- Wiring Drop Cancellation for Notebook Computer Battery Charging
- AC and DC Adaptors
- Well-Logging and Other Remote Instrumentation
- Surveillance Equipment
Simulate
LTspice IV is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. To download LTspice IV and other FREE simulation tools, please visit our Design Simulation page.
Related models available in LTspice IV
LT4180
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.