LTC3816 - Single-Phase Wide VIN Range DC/DC Controller for Intel IMVP-6/IMVP-6.5 CPUs
Features
- Supports 7-Bit IMVP-6/IMVP-6.5 VID Code and Features
- Wide VIN Range: 4.5V to 36V Operation with Optional Line Feedforward Compensation
- tON(MIN) < 35ns, Capable of Very Low Duty Cycle
- Temperature Compensated Inductor DCR or Sense Resistor Output Current Monitoring
- Differential Remote Output Voltage Sensing with Programmable Active Voltage Positioning
- Phase-Lockable Fixed Frequency: 150kHz to 550kHz
- Programmable UVLO, Preset VOUT at Boot-Up
- Programmable Slow Slew Rate Sleep State Exit
- Internal LDO for Single Supply Operation
- Overvoltage and Overcurrent Protection
- PWRGD and VRTT# Thermal Throttling Flags
- Power Optimization During Sleep and Light Load
- 38-Pin Thermally Enhanced eTSSOP and 5mm × 7mm QFN Packages
Typical Application
Description
The LTC3816 is a single-phase synchronous step-down DC/DC switching regulator controller that drives N-channel power MOSFETs in a constant-frequency voltage mode architecture. The controller’s leading edge modulation topology allows extremely low output voltages and supports a phase-lockable switching frequency up to 550kHz. The output voltage is programmed using a 7-bit VID code.
The LTC3816 features all of the IMVP-6/IMVP-6.5 requirements, including start-up to a preset boot voltage, differential remote output voltage sensing with programmable active voltage positioning, IMON output current reporting, power optimization during sleep state, and fast or slow slew rate sleep state exit.
Fault protection features include input undervoltage lockout, cycle-by-cycle current limit, output overvoltage protection, and PWRGD and overtemperature flags.
Packaging
For complete and up to date package information and drawings, please refer to our packaging page
TSSOP-38
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 |
|---|---|---|---|---|---|---|
| LTC3816EFE#PBF | TSSOP | 38 | E | $5.07 | $3.55 | View |
| LTC3816EFE#TRPBF | TSSOP | 38 | E | $3.61 | View | |
| LTC3816EUHF#PBF | QFN | 38 | E | $4.64 | $3.25 | View |
| LTC3816EUHF#TRPBF | QFN | 38 | E | $3.31 | View | |
| LTC3816IFE#PBF | TSSOP | 38 | I | $5.69 | $3.98 | View |
| LTC3816IFE#TRPBF | TSSOP | 38 | I | $4.04 | View | |
| LTC3816IUHF#PBF | QFN | 38 | I | $5.30 | $3.71 | View |
| LTC3816IUHF#TRPBF | QFN | 38 | I | $3.77 | 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 |
|---|---|---|---|
| DC1672A | LTC3816EUHF Demo Board u 4.5V VIN 28V, VOUT = Up to 1.5V @ 25A | $150.00 | |
| Buy Now | |||
Applications
- Embedded Computing
- Mobile Computers, Internet Devices
- Navigation Displays
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.
To launch a ready to run LTspice demonstration circuit for this part:
- Step 1: If you have not installed LTspice on this computer, download and install LTspice IV
- Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
- Step 3: If LTspice IV does not automatically open after clicking the link above, 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
To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.
Related models available in LTspice IV
LTC3816
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.
