LTC4414
RECOMMENDED FOR NEW DESIGNS36V, Low Loss PowerPath Controller for Large PFETs
- Part Models
- 4
- 1ku List Price
- Starting From $2.85
Overview
- Designed Specifically to Drive Large QG PFETs
- Very Low Loss Replacement for Power Supply OR’ing Diodes
- 3.5V to 36V AC/DC Adapter Voltage Range
- Minimal External Components
- Automatic Switching Between DC Sources
- Low Quiescent Current: 30µA
- 3V to 36V Battery Voltage Range
- Limited Reverse Battery Protection
- MOSFET Gate Protection Clamp
- Manual Control Input
- Space Saving 8-Lead MSOP Package
The LTC4414 controls an external P-channel MOSFET to create a near ideal diode function for power switchover. This permits highly efficient OR’ing of multiple power sources for extended battery life and low self- heating. When conducting, the voltage drop across the MOSFET is typically 20mV. For applications with a wall adapter or other auxiliary power source, the load is automatically disconnected from the battery when the auxiliary source is connected. Two or more LTC4414s may be interconnected to allow switchover between multiple batteries or charging of multiple batteries from a single charger.
The wide supply operating range supports operation from one to eight Li-Ion cells in series. The low quiescent current (30µA typical) is independent of the load current. The gate driver includes an internal voltage clamp for MOSFET protection.
The STAT pin can be used to enable an auxiliary P-channel MOSFET power switch when an auxiliary supply is detected. This pin may also be used to indicate to a microcontroller that an auxiliary supply is connected. The control (CTL) input enables the user to force the primary MOSFET off and the STAT pin low.
The LTC4414 is available in a low profile 8-lead MSOP package.
Applications
- High Current Power Path Switch
- Industrial and Automotive Applications
- Uninterruptable Power Supplies
- Logic Controlled Power Switch
- Battery Backup Systems
- Emergency Systems with Battery Backups
Documentation
Data Sheet 1
User Guide 1
Application Note 1
Technical Articles 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 |
|---|---|---|---|
| LTC4414EMS8#PBF | 8-Lead MSOP | ||
| LTC4414EMS8#TRPBF | 8-Lead MSOP | ||
| LTC4414IMS8#PBF | 8-Lead MSOP | ||
| LTC4414IMS8#TRPBF | 8-Lead MSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC4414EMS8#PBF | PRODUCTION | |
| LTC4414EMS8#TRPBF | PRODUCTION | |
| LTC4414IMS8#PBF | PRODUCTION | |
| LTC4414IMS8#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Circuit Monitors 1 | ||
| LTC2960 | RECOMMENDED FOR NEW DESIGNS | 36V Nano-Current Two-Input Voltage Monitor |
| Ideal Diodes and PowerPath Controllers 1 | ||
| LTC4359 | RECOMMENDED FOR NEW DESIGNS | Ideal Diode Controller with Reverse Input Protection |
| Overvoltage & Overcurrent Protectors 1 | ||
| LTC4365 | RECOMMENDED FOR NEW DESIGNS | Overvoltage, Undervoltage and Reverse Supply Protection Controller |
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC4414
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
LTC4412/LTC4414 Demo Board | VIN1 = 2.5V to 36V/VIN2 = 5V to 36V , VOUT1 @ 2A/VOUT2 @ 8A