LTC3113 - 3A Low Noise Buck-Boost DC/DC Converter
Features
- Regulated Output with Input Voltage Above, Below or Equal to the Output Voltage
- 1.8V to 5.5V Input and Output Voltage Range
- 3A Continuous Output Current VIN > 3.0V, VOUT = 3.8V
- 1.5A Continuous Output Current for VIN ≥ 1.8V, VOUT = 3.3V
- Single Inductor
- Low Noise Buck-Boost Architecture
- Up to 96% Efficiency
- Programmable Frequency from 300kHz to 2MHz
- Selectable Burst Mode® Operation
- Output Disconnect in Shutdown
- Shutdown Current: <1μA
- Internal Soft-Start
- Small, Thermally Enhanced 16-Lead
(4mm × 5mm × 0.75mm) DFN Package
and 20-Lead TSSOP Package
Typical Application
Description
The LTC3113 is a wide VIN range, highly efficient, fixed frequency, buck-boost DC/DC converter that operates from input voltages above, below or equal to the output voltage. The topology incorporated in the IC provides low noise operation, making it well suited for RF and precision measurement applications.
The LTC3113 can deliver up to 3A of continuous output current to satisfy the most demanding applications. Higher output current is possible in stepdown (buck) mode. Integrated low RDS(ON) power MOSFETs and a programmable switching frequency up to 2MHz result in a compact solution footprint. Selectable Burst Mode operation improves efficiency at light loads.
Other features include <1μA shutdown current, integrated soft-start, short-circuit protection, current limit and thermal overload protection. The LTC3113 is housed in the thermally enhanced 16-lead (4mm × 5mm × 0.75mm) DFN and 20-lead TSSOP packages.
Packaging
For complete and up to date package information and drawings, please refer to our packaging page
DFN-16, TSSOP-20
Order Info
- Part numbers ending in PBF are lead free. Please contact LTC marketing for information on lead based finish parts.
- 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 | Pins | Temp | Price (1-99) | Price (1k)* | RoHS Data |
|---|---|---|---|---|---|---|
| LTC3113EDHD#PBF | DFN | 16 | E | $5.64 | $3.95 | View |
| LTC3113EDHD#TRPBF | DFN | 16 | E | $4.01 | View | |
| LTC3113EFE#PBF | TSSOP | 20 | E | $5.93 | $4.15 | View |
| LTC3113EFE#TRPBF | TSSOP | 20 | E | $4.21 | View | |
| LTC3113IDHD#PBF | DFN | 16 | I | $6.22 | $4.35 | View |
| LTC3113IDHD#TRPBF | DFN | 16 | I | $4.41 | View | |
| LTC3113IFE#PBF | TSSOP | 20 | I | $6.53 | $4.57 | View |
| LTC3113IFE#TRPBF | TSSOP | 20 | I | $4.63 | View | |
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology demo boards are offered free of charge to qualified customers. Contact your local sales office or distributor to request 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 |
|---|---|---|---|
| DC1551A | LTC3113EDHD Demo Board | $175.00 | |
| Buy Now | |||
Applications
- Wireless Modems
- Backup Power Systems
- Portable Inventory Terminals
- Portable Barcode Readers
- Portable Instrumentation
Simulate
LTspice IV is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. To download LTspice IV and other FREE simulation tools, please visit our Design Simulation page.
To launch a ready to run LTspice demonstration circuit for this part:
- Step 1: If you have not installed LTspice on this computer, download and install LTspice IV
- Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
- Step 3: If LTspice IV does not automatically open after clicking the link above, you can instead run the simulation by right clicking on the link and selecting "Save Target As". After saving the file to your computer, start LTspice and open the demonstration circuit by selecting 'Open' from the 'File' menu
To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.
Related models available in LTspice IV
LTC3113
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.
