Products
LTC4370
RECOMMENDED FOR NEW DESIGNSTwo-Supply Diode-OR Current Balancing Controller
- Part Models
- 8
- 1ku List Price
- Starting From $7.47
Viewing:
Overview
- Shares Load Between Two Supplies
- Eliminates Need for Active Control of Input Supplies
- No Share Bus Required
- Blocks Reverse Current
- No Shoot-Through Current During Start-Up or Faults
- 0V to 18V High Side Operation
- Enable Inputs
- MOSFET On Status Outputs
- Dual Ideal Diode Mode
- 16-Lead DFN (4mm × 3mm) and MSOP Packages
The LTC4370 is a two-supply current sharing controller which incorporates MOSFET ideal diodes. The diodes block reverse and shoot-through currents during start-up and fault conditions. Their forward voltage is adjusted to share the load currents between supplies. Unlike other sharing methods, neither a share bus nor trim pins on the supply are required.
The maximum MOSFET voltage drop can be set with a resistor. A fast gate turn-on reduces the load voltage droop during supply switchover. If the input supply fails or is shorted, a fast turn-off minimizes reverse current transients.
The controller operates with supplies from 2.9V to 18V. For lower rail voltages, an external supply is needed at the VCC pin. Enable inputs can be used to turn off the MOSFET and put the controller in a low current state. Status outputs indicate whether the MOSFETs are on or off. The load sharing function can be disabled to turn the LTC4370 into a dual ideal diode controller.
Applications
- Redundant Power Supplies
- High Availability Systems and Servers
- Telecom and Network Infrastructure
Documentation
Data Sheet 1
User Guide 1
Design Note 1
Technical Articles 4
Video 1
Brochure 1
Product Selection Guide 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC4370CDE#PBF | 16-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC4370CDE#TRPBF | 16-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC4370CMS#PBF | 16-Lead MSOP | ||
| LTC4370CMS#TRPBF | 16-Lead MSOP | ||
| LTC4370IDE#PBF | 16-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC4370IDE#TRPBF | 16-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC4370IMS#PBF | 16-Lead MSOP | ||
| LTC4370IMS#TRPBF | 16-Lead MSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package |
||
| LTC4370CMS#PBF | PRODUCTION | |
| LTC4370CMS#TRPBF | PRODUCTION | |
| LTC4370IMS#PBF | PRODUCTION | |
| LTC4370IMS#TRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0132 Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC4370CMS#PBF | PRODUCTION | |
| LTC4370CMS#TRPBF | PRODUCTION | |
| LTC4370IMS#PBF | PRODUCTION | |
| LTC4370IMS#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC4370
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
LTC4370CDE Demo Board | Two-Supply Diode-OR Current Sharing Controller