LTC4417 - Prioritized PowerPath Controller
Features
- Selects Highest Priority Supply from Three Inputs
- Blocks Reverse and Cross Conduction Currents
- Wide Operating Voltage Range: 2.5V to 36V
- –42V Protection Against Reverse Battery Connection
- Fast Switchover Minimizes Output Voltage Droop
- Low 28μA Operating Current
- <1μA Current Draw from Supplies Less than VOUT
- 1.5% Input Overvoltage/Undervoltage Protection
- Adjustable Overvoltage/Undervoltage Hysteresis
- P-Channel MOSFET Gate Protection Clamp
- Cascadable for Additional Input Supplies
- 24-Lead Narrow SSOP and 4mm × 4mm QFN Packages
AEC-Q100 data available for specific packages
Typical Application
Description
The LTC®4417 connects one of three valid power supplies to a common output based on priority. Priority is defined by pin assignment, with V1 assigned the highest priority and V3 the lowest priority. A power supply is defined as valid when its voltage has been within its overvoltage (OV) and undervoltage (UV) window continuously for at least 256ms. If the highest priority valid input falls out of the OV/UV window, the channel is immediately disconnected and the next highest priority valid input is connected to the common output. Two or more LTC4417s can be cascaded to provide switchover between more than three inputs.
The LTC4417 incorporates fast non-overlap switching circuitry to prevent both reverse and cross conduction while minimizing output droop. The gate driver includes a 6V clamp to protect external MOSFETs. A controlled output ramp feature minimizes start-up inrush current. Open drain VALID outputs indicate the input supplies have been within their OV/UV window for 256ms.
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 |
|---|---|---|---|---|---|
| LTC4417CGN#PBF | SSOP-24 | GN | C | 05-08-1641 (GN24) | Yes |
| LTC4417CGN#TRPBF | SSOP-24 | GN | C | 05-08-1641 (GN24) | Yes |
| LTC4417CUF#PBF | 4x4 QFN-24 | UF | C | 05-08-1697 | Yes |
| LTC4417CUF#TRPBF | 4x4 QFN-24 | UF | C | 05-08-1697 | Yes |
| LTC4417HGN#PBF | SSOP-24 | GN | H | 05-08-1641 (GN24) | Yes |
| LTC4417HGN#TRPBF | SSOP-24 | GN | H | 05-08-1641 (GN24) | Yes |
| LTC4417HUF#PBF | 4x4 QFN-24 | UF | H | 05-08-1697 | Yes |
| LTC4417HUF#TRPBF | 4x4 QFN-24 | UF | H | 05-08-1697 | Yes |
| LTC4417IGN#PBF | SSOP-24 | GN | I | 05-08-1641 (GN24) | Yes |
| LTC4417IGN#TRPBF | SSOP-24 | GN | I | 05-08-1641 (GN24) | Yes |
| LTC4417IUF#PBF | 4x4 QFN-24 | UF | I | 05-08-1697 | Yes |
| LTC4417IUF#TRPBF | 4x4 QFN-24 | UF | I | 05-08-1697 | 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 | |
|---|---|---|---|---|---|---|
| LTC4417CGN#PBF | SSOP-24 | C | $4.50 | $3.15 | Yes | |
| LTC4417CGN#TRPBF | SSOP-24 | C | $3.21 | Yes | ||
| LTC4417CUF#PBF | 4x4 QFN-24 | C | $4.36 | $3.05 | Yes | |
| LTC4417CUF#TRPBF | 4x4 QFN-24 | C | $3.11 | Yes | ||
| LTC4417HGN#PBF | SSOP-24 | H | $5.93 | $4.15 | Yes | |
| LTC4417HGN#TRPBF | SSOP-24 | H | $4.21 | Yes | ||
| LTC4417HUF#PBF | 4x4 QFN-24 | H | $5.78 | $4.05 | Yes | |
| LTC4417HUF#TRPBF | 4x4 QFN-24 | H | $4.11 | Yes | ||
| LTC4417IGN#PBF | SSOP-24 | I | $5.14 | $3.60 | Yes | |
| LTC4417IGN#TRPBF | SSOP-24 | I | $3.66 | Yes | ||
| LTC4417IUF#PBF | 4x4 QFN-24 | I | $5.00 | $3.50 | Yes | |
| LTC4417IUF#TRPBF | 4x4 QFN-24 | I | $3.56 | 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 |
|---|---|---|---|
| DC1717A | LTC4417CUF Demoboard : Prioritized PowerPath Controller | $75.00 | |
| Buy Now | |||
Designed for Automotive and Transportation Applications
AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTC4417HGN#PBF | SSOP-24 | H | $5.93 | $4.15 | Yes | |
| LTC4417HGN#TRPBF | SSOP-24 | H | $4.21 | Yes | ||
| LTC4417HUF#PBF | 4x4 QFN-24 | H | $5.78 | $4.05 | Yes | |
| LTC4417HUF#TRPBF | 4x4 QFN-24 | H | $4.11 | Yes | ||
| LTC4417IGN#PBF | SSOP-24 | I | $5.14 | $3.60 | Yes | |
| LTC4417IGN#TRPBF | SSOP-24 | I | $3.66 | Yes | ||
| LTC4417IUF#PBF | 4x4 QFN-24 | I | $5.00 | $3.50 | Yes | |
| LTC4417IUF#TRPBF | 4x4 QFN-24 | I | $3.56 | Yes | ||
| Buy Now • Request Samples | ||||||
Applications
- Industrial Handheld Instruments
- High Availability Systems
- Battery Backup Systems
- Servers and Computer Peripherals
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Design Tools
LTspice
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LTC4417
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.
