LTC4372
RECOMMENDED FOR NEW DESIGNSLow Quiescent Current Ideal Diode Controller
- Part Models
- 12
- 1ku List Price
- Starting From $3.28
Overview
- Reduces Power Dissipation by Replacing a Power Schottky Diode
- Low Quiescent Current: 5μA Operating
- Wide Operating Voltage Range: 2.5V to 80V
- Reverse Supply Protection to –28V
- No TVS Input Clamps Required
- High Side External N-Channel MOSFET Drive
- Drives Back-to-Back MOSFETs for Inrush Control and Load Switching
- Shutdown Input for ON/OFF Control
- Fast Reverse Current Turn-Off within 1.5μs
- 8-Lead MSOP and 3mm × 3mm DFN Packages
The LTC4372/LTC4373 are positive high voltage ideal diode controllers that drive an external N-channel MOSFET to replace a Schottky diode. They control the forward voltage drop across the MOSFET to ensure current delivery or current transfer from one path to the other even at light loads.
A 5μA operating current achieves high efficiency for intermittent load applications or always-on backup power supplies. If a power source fails or is shorted, a fast turn-off minimizes reverse current transients. The LTC4372/LTC4373 control back-to-back N-channel MOSFETs for inrush current control and load switching.
The LTC4372’s SHDN pin keeps the MOSFET off and reduces the quiescent current to 3.5μA. The LTC4373 has a UV pin for undervoltage monitoring while the UVOUT pin provides hysteresis adjustment and status information. During undervoltage, the back-to-back MOSFETs are cut off and quiescent current reduces to 0.5μA.
APPLICATIONS
- Automotive Battery Protection
- Redundant Power Supplies
- Portable Instrumentation
- Solar Powered Systems
- Energy Harvesting Applications
- Supply Holdup
Documentation
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 |
|---|---|---|---|
| LTC4372CDD#PBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LTC4372CDD#TRPBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LTC4372CMS8#PBF | 8-Lead MSOP | ||
| LTC4372CMS8#TRPBF | 8-Lead MSOP | ||
| LTC4372HDD#PBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LTC4372HDD#TRPBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LTC4372HMS8#PBF | 8-Lead MSOP | ||
| LTC4372HMS8#TRPBF | 8-Lead MSOP | ||
| LTC4372IDD#PBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LTC4372IDD#TRPBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LTC4372IMS8#PBF | 8-Lead MSOP | ||
| LTC4372IMS8#TRPBF | 8-Lead MSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Aug 24, 2021 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC4372CMS8#PBF | PRODUCTION | |
| LTC4372CMS8#TRPBF | PRODUCTION | |
| LTC4372HMS8#PBF | PRODUCTION | |
| LTC4372HMS8#TRPBF | PRODUCTION | |
| LTC4372IMS8#PBF | PRODUCTION | |
| LTC4372IMS8#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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LTspice
Models for the following parts are available in LTspice:
- LTC4372
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.
