LTC3418
LAST TIME BUY8A, 4MHz, Monolithic Synchronous Step-Down Regulator
- Part Models
- 2
- 1ku List Price
- Starting From $10.36
Overview
- High Efficiency: Up to 95%
- 8A Output Current
- 2.25V to 5.5V Input Voltage Range
- Low RDS(ON) Internal Switch: 35mΩ
- Tracking Input to Provide Easy Supply Sequencing
- Programmable Frequency: 300kHz to 4MHz
- 0.8V ±1% Reference Allows Low Output Voltage
- Quiescent Current: 380μA
- Selectable Forced Continuous/Burst Mode® Operation with Adjustable Burst Clamp
- Synchronizable Switching Frequency
- Low Dropout Operation: 100% Duty Cycle
- Power Good Output Voltage Monitor
- Overtemperature Protected
- 38-Lead Low Profile (0.75mm) Thermally Enhanced QFN (5mm × 7mm) Package
The LTC3418 is a high efficiency, monolithic synchronous step-down DC/DC converter utilizing a constant frequency, current mode architecture. It operates from an input voltage range of 2.25V to 5.5V and provides a regulated output voltage from 0.8V to 5V while delivering up to 8A of output current. The internal synchronous power switch increases efficiency and eliminates the need for an external Schottky diode. Switching frequency is set by an external resistor or can be synchronized to an external clock. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of loads and output capacitors.
The LTC3418 can be configured for either Burst Mode operation or forced continuous operation. Forced continuous operation reduces noise and RF interference while Burst Mode operation provides high efficiency by reducing gate charge losses at light loads. In Burst Mode operation, external control of the burst clamp level allows the output voltage ripple to be adjusted according to the requirements of the application. A tracking input in the LTC3418 allows for proper sequencing with respect to another power supply.
Applications
- Microprocessor, DSP and Memory Supplies
- Distributed 2.5V, 3.3V and 5V Power Systems
- Automotive Applications
- Point of Load Regulation
- Notebook Computers
Documentation
Data Sheet 1
User Guide 1
Technical Articles 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 |
|---|---|---|---|
| LTC3418EUHF#PBF | 38-Lead QFN (5mm x 7mm w/ EP) | ||
| LTC3418EUHF#TRPBF | 38-Lead QFN (5mm x 7mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jul 29, 2026 - 26_0046 Discontinuation of Parts Manufactured in TSMC Fab 2 and 5 in Hsinchu, Taiwan. |
||
| LTC3418EUHF#PBF | ||
| LTC3418EUHF#TRPBF | ||
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 |
|---|---|---|
| Oscillators 2 | ||
| LTC6908 | Resistor Set SOT-23 Oscillator with Spread Spectrum Modulation | |
| LTC6909 | PRODUCTION | 1 to 8 Output, Multiphase Silicon Oscillator with Spread Spectrum Modulation |
| Power System Management (PSM) & Sequencers 1 | ||
| LTC2974 | RECOMMENDED FOR NEW DESIGNS | 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement |
| Temperature Sensors 1 | ||
| LTC2991 | RECOMMENDED FOR NEW DESIGNS | Octal I2C Voltage, Current, and Temperature Monitor |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LTC3418
LTpowerCAD 1
Design tools for the following parts are available in LTpowerCAD:
- LTC3418
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.
LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.
Evaluation Kits
LTC3418EUHF Demo Board | 2.25V ≤ VIN ≤ 5.5V, VOUT = 1.2V/1.5V/1.8V @ 8A
Resources
Reference Designs
Part Used
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