LTC3414 - 4A, 4MHz, Monolithic Synchronous Step-Down Regulator
Features
- High Efficiency: Up to 95%
- 4A Output Current
- Low Quiescent Current: 64µA
- Low RDS(ON) Internal Switch: 67 milliOhm
- Programmable Frequency: 300KHz to 4MHz
- 2.25V to 5.5V Input Voltage Range
- ±2% Output Voltage Accuracy
- 0.8V Reference Allows Low Output Voltage
- 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
- Available in 20-Lead Exposed TSSOP Package
AEC-Q100 data available for specific packages
Typical Application
Description
The LTC3414 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 4A of output current. The internal synchronous power switch with 67milliOhm on-resistance 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. 100% duty cycle provides low dropout operation extending battery life in portable systems. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of loads and output capacitors.
The LTC3414 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.
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 |
|---|---|---|---|---|---|
| LTC3414EFE#PBF | TSSOP-20 | FE | E | 05-08-1663 (CA) | Yes |
| LTC3414EFE#TRPBF | TSSOP-20 | FE | E | 05-08-1663 (CA) | Yes |
| LTC3414IFE#PBF | TSSOP-20 | FE | I | 05-08-1663 (CA) | Yes |
| LTC3414IFE#TRPBF | TSSOP-20 | FE | I | 05-08-1663 (CA) | Yes |
| LTC3414MPFE | TSSOP-20 | FE | MP | 05-08-1663 (CA) | No |
| LTC3414MPFE#PBF | TSSOP-20 | FE | MP | 05-08-1663 (CA) | Yes |
| LTC3414MPFE#TR | TSSOP-20 | FE | MP | 05-08-1663 (CA) | No |
| LTC3414MPFE#TRPBF | TSSOP-20 | FE | MP | 05-08-1663 (CA) | 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
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTC3414EFE#PBF | TSSOP-20 | E | $6.07 | $4.25 | Yes | |
| LTC3414EFE#TRPBF | TSSOP-20 | E | $4.31 | Yes | ||
| LTC3414IFE#PBF | TSSOP-20 | I | $6.50 | $4.55 | Yes | |
| LTC3414IFE#TRPBF | TSSOP-20 | I | $4.61 | Yes | ||
| LTC3414MPFE | TSSOP-20 | MP | $11.76 | $8.23 | No | |
| LTC3414MPFE#PBF | TSSOP-20 | MP | $11.76 | $8.23 | Yes | |
| LTC3414MPFE#TR | TSSOP-20 | MP | $8.29 | No | ||
| LTC3414MPFE#TRPBF | TSSOP-20 | MP | $8.29 | Yes | ||
| Buy Now • Request Samples | ||||||
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 |
|---|---|---|---|
| DC556A | LTC3414EFE Demo Board | 2.5V ≤ VIN ≤ to 5.5V, Vout = 1.8V/2.5V/3.3V/Adj @ 4A | $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 | |
|---|---|---|---|---|---|---|
| LTC3414IFE#PBF | TSSOP-20 | I | $6.50 | $4.55 | Yes | |
| LTC3414IFE#TRPBF | TSSOP-20 | I | $4.61 | Yes | ||
| LTC3414MPFE#PBF | TSSOP-20 | MP | $11.76 | $8.23 | Yes | |
| LTC3414MPFE#TRPBF | TSSOP-20 | MP | $8.29 | Yes | ||
| Buy Now • Request Samples | ||||||
Applications
- Point-of-Load Regulation
- Notebook Computers
- Portable Instruments
- Distributed Power Systems
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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
Models for the following parts are available in LTspice:
LTC3414
LTpowerCAD
The LTpowerCAD design tool is a complete power supply design tool program that can significantly ease the tasks of power supply design. It guides users to a solution, selects power stage components, provides detailed power efficiency, shows quick loop bode plot stability and load transient analysis, and can export a final design to LTspice for simulation. Click here to download LTpowerCAD
To open the project file for this circuit:
- Step 1: If you have not installed LTpowerCAD on this computer, download and install LTpowerCAD
- Step 2: Once LTpowerCAD is installed, click on the link(s) below to open the project file
- Step 3: If LTpowerCAD does not automatically open after clicking the link above, you can open the project file by right clicking on the link and selecting "Save Target As." After saving the file to your computer, start LTpowerCAD and open the project file by selecting 'Open Project' from the 'File' menu
Design tools for the following parts are available in LTpowerCAD:
LTC3414
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.
