LT3483
PRODUCTIONInverting Micropower DC/DC Converters with Schottky
- Part Models
- 12
- 1ku List Price
- Starting From $3.48
Overview
- Internal 40V Schottky Diode
- One Resistor Feedback (Other Resistor Inside)
- Internal 40V, 200mA/400mA Power Switch
- Generates Regulated Negative Outputs to –38V
- Low Quiescent Current:
- 40μA in Active Mode
- <1μA in Shutdown Mode
- Low VCESAT Switch: 200mV at 150mA
- Wide Input Range: 2.5V to 16V
- Uses Small Surface Mount Components
- Output Short-Circuit Protected
- Available in a 6-Lead SOT-23 (LT3483 Only) and Low Profile 8-Lead DFN (2mm × 2mm × 0.75mm) Packages
The LT3483/LT3483A are micropower inverting DC/DC converters with integrated Schottky and one resistor feedback. The small package size, high level of integration and use of tiny surface mount components yield a solution size as small as 40mm2. The devices feature a quiescent current of only 40μA at no load, which further reduces to 0.1μA in shutdown. A current limited, fixed off-time control scheme conserves operating current, resulting in high efficiency over a broad range of load current. A precisely trimmed 10μA feedback current enables one resistor feedback and virtually eliminates feedback loading of the output. The 40V switch enables voltage outputs up to –38V to be generated without the use of costly transformers. The LT3483/LT3483A’s low 300ns off-time permits the use of tiny low profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications.
Applications
- LCD Bias
- Handheld Computers
- Battery Backup
- Digital Cameras
- OLED Bias
Documentation
Data Sheet 1
User Guide 2
Technical Articles 2
Press Release 1
Webcast 2
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 |
|---|---|---|---|
| LT3483AEDC#TRMPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LT3483AEDC#TRPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LT3483AIDC#TRMPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LT3483AIDC#TRPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LT3483EDC#TRMPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LT3483EDC#TRPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LT3483ES6#TRMPBF | 6-Lead TSOT-23 | ||
| LT3483ES6#TRPBF | 6-Lead TSOT-23 | ||
| LT3483IDC#TRMPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LT3483IDC#TRPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LT3483IS6#TRMPBF | 6-Lead TSOT-23 | ||
| LT3483IS6#TRPBF | 6-Lead TSOT-23 |
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/SoftwareTools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT3483
- LT3483A
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
LT3483ES6 | Inverting DC/DC Converter, VIN = 2.7V to 12V, VOUT = –15V, VIN = 2.7V to 4.2V, VOUT = –8V, IOUT = 8mA to 40mA
Resources
LT3483 Signal Chain Evaluation Board | Inverting μPower DC/DC Converter