LT4320/LT4320-1 - Ideal Diode Bridge Controller
Features
- Maximizes Power Efficiency
- Eliminates Thermal Design Problems
- DC to 600Hz
- 9V to 72V Operating Voltage Range
- IQ = 1.5mA (Typical)
- Maximizes Available Voltage
- Available in 8-Lead (3mm × 3mm) DFN, 12-Lead MSOP and 8-Lead PDIP Packages
AEC-Q100 data available for specific packages
Typical Application
Description
The LT®4320/LT4320-1 are ideal diode bridge controllers that drive four N-channel MOSFETs, supporting voltage rectification from DC to 600Hz typical. By maximizing available voltage and reducing power dissipation (see thermograph comparison below), the ideal diode bridge simplifies power supply design and reduces power supply cost, especially in low voltage applications.
An ideal diode bridge also eliminates thermal design problems, costly heat sinks, and greatly reduces PC board area. The LT4320’s internal charge pump supports an all- NMOS design, which eliminates larger and more costly PMOS switches. If the power source fails or is shorted, a fast turn-off minimizes reverse current transients.
The LT4320 is designed for DC to 60Hz typical voltage rectification, while the LT4320-1 is designed for DC to 600Hz typical voltage rectification. Higher frequencies of operation are possible depending on MOSFET size and operating load current.
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 |
|---|---|---|---|---|---|
| LT4320HDD-1#PBF | 3x3 DFN-8 | DD | H | 05-08-1698 | Yes |
| LT4320HDD-1#TRPBF | 3x3 DFN-8 | DD | H | 05-08-1698 | Yes |
| LT4320HDD#PBF | 3x3 DFN-8 | DD | H | 05-08-1698 | Yes |
| LT4320HDD#TRPBF | 3x3 DFN-8 | DD | H | 05-08-1698 | Yes |
| LT4320HMSE-1#PBF | MS-12E | MSE | H | 05-08-1666 | Yes |
| LT4320HMSE-1#TRPBF | MS-12E | MSE | H | 05-08-1666 | Yes |
| LT4320HMSE#PBF | MS-12E | MSE | H | 05-08-1666 | Yes |
| LT4320HMSE#TRPBF | MS-12E | MSE | H | 05-08-1666 | Yes |
| LT4320HN8-1#PBF | N-8 | N | H | 05-08-1510 (N8) | Yes |
| LT4320HN8#PBF | N-8 | N | H | 05-08-1510 (N8) | Yes |
| LT4320IDD-1#PBF | 3x3 DFN-8 | DD | I | 05-08-1698 | Yes |
| LT4320IDD-1#TRPBF | 3x3 DFN-8 | DD | I | 05-08-1698 | Yes |
| LT4320IDD#PBF | 3x3 DFN-8 | DD | I | 05-08-1698 | Yes |
| LT4320IDD#TRPBF | 3x3 DFN-8 | DD | I | 05-08-1698 | Yes |
| LT4320IMSE-1#PBF | MS-12E | MSE | I | 05-08-1666 | Yes |
| LT4320IMSE-1#TRPBF | MS-12E | MSE | I | 05-08-1666 | Yes |
| LT4320IMSE#PBF | MS-12E | MSE | I | 05-08-1666 | Yes |
| LT4320IMSE#TRPBF | MS-12E | MSE | I | 05-08-1666 | Yes |
| LT4320IN8-1#PBF | N-8 | N | I | 05-08-1510 (N8) | Yes |
| LT4320IN8#PBF | N-8 | N | I | 05-08-1510 (N8) | Yes |
| LT4320MPMSE-1#PBF | MS-12E | MSE | MP | 05-08-1666 | Yes |
| LT4320MPMSE-1#TRPBF | MS-12E | MSE | MP | 05-08-1666 | Yes |
| LT4320MPMSE#PBF | MS-12E | MSE | MP | 05-08-1666 | Yes |
| LT4320MPMSE#TRPBF | MS-12E | MSE | MP | 05-08-1666 | 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
sales office or authorized distributor.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 |
|---|---|---|---|
| DC1823B | LT4320IDD Demo Board | 1.2kW Ideal Diode Bridge Full-Wave Rectifier [9V to 40V, 30A] | $75.00 | |
| DC1902B | LT4320IDD Demo Board | 200W Ideal Diode Bridge Full-Wave Rectifier [9V to 60V, 3.5A] | $75.00 | |
| DC2047A-A | LT4276B/LT4321 Demo Board | PoE+ (25W, 12V/1.9A) PD with DC/DC, Ideal Diode Bridge and 9V-57V AUX | $95.00 | |
| DC2465A | LT4320IDD-1 3-Phase Ideal Diode Bridge Rectifier [9VAC to 48VAC L-L, 25A] | $125.00 | |
| 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 | |
|---|---|---|---|---|---|---|
| LT4320HDD-1#PBF | 3x3 DFN-8 | H | $5.36 | $3.75 | Yes | |
| LT4320HDD-1#TRPBF | 3x3 DFN-8 | H | $5.42 | $3.81 | Yes | |
| LT4320HDD#PBF | 3x3 DFN-8 | H | $4.93 | $3.45 | Yes | |
| LT4320HDD#TRPBF | 3x3 DFN-8 | H | $4.99 | $3.51 | Yes | |
| LT4320HMSE-1#PBF | MS-12E | H | $5.36 | $3.75 | Yes | |
| LT4320HMSE-1#TRPBF | MS-12E | H | $5.42 | $3.81 | Yes | |
| LT4320HMSE#PBF | MS-12E | H | $4.93 | $3.45 | Yes | |
| LT4320HMSE#TRPBF | MS-12E | H | $4.99 | $3.51 | Yes | |
| LT4320IDD-1#PBF | 3x3 DFN-8 | I | $4.64 | $3.25 | Yes | |
| LT4320IDD-1#TRPBF | 3x3 DFN-8 | I | $3.31 | Yes | ||
| LT4320IDD#PBF | 3x3 DFN-8 | I | $4.21 | $2.95 | Yes | |
| LT4320IDD#TRPBF | 3x3 DFN-8 | I | $3.01 | Yes | ||
| LT4320IMSE-1#PBF | MS-12E | I | $4.64 | $3.25 | Yes | |
| LT4320IMSE-1#TRPBF | MS-12E | I | $3.31 | Yes | ||
| LT4320IMSE#PBF | MS-12E | I | $4.21 | $2.95 | Yes | |
| LT4320IMSE#TRPBF | MS-12E | I | $3.01 | Yes | ||
| LT4320MPMSE-1#PBF | MS-12E | MP | $13.93 | $9.75 | Yes | |
| LT4320MPMSE-1#TRPBF | MS-12E | MP | $13.99 | $9.81 | Yes | |
| LT4320MPMSE#PBF | MS-12E | MP | $12.64 | $8.85 | Yes | |
| LT4320MPMSE#TRPBF | MS-12E | MP | $12.70 | $8.91 | Yes | |
| Buy Now • Request Samples | ||||||
Applications
- Security Cameras
- Terrestrial or Airborne Power Distribution Systems
- Power-over-Ethernet Powered Device with a Secondary Input
- Polarity-Agnostic Power Input
- Diode Bridge Replacement
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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
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Models for the following parts are available in LTspice:
LT4320
LT4320-1
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.
