Features and Benefits
- Generates Well-Regulated Positive and Negative Outputs
- Low Quiescent Current:
- 20µA (per Converter) in Active Mode
- <1µA in Shutdown Mode
- Internal 42V Power Switches
- Internal 42V Schottky Diodes
- Low VCESAT Switch: 180mV at 150mA
- Input Voltage Range: 2.4V to 15V
- High Output Voltages: Up to ±40V
- Low Profile (0.8mm) 3mm × 3mm DFN Package
The LT3463/LT3463A are dual micropower DC/DC converters with internal Schottky diodes in a 10-lead 3mm × 3mm DFN package. Negative and positive LT3463 converters have a 250mA current limit. The LT3463A positive converter also has a 250mA limit, while the negative converter has a 400mA limit. Both devices have an input voltage range of 2.4V to 15V, making them ideal for a wide variety of applications. Each converter features a quiescent current of only 20µA, which drops to under 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. The 42V switch enables high voltage outputs up to ±40V to be easily generated without the use of costly transformers. The low 300ns offtime permits the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications.
- CCD Bias
- LCD Bias
- Handheld Computers
- Digital Cameras
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (2)
Demonstration circuit SCP-LT3463-EVALZ is a dual output DC-DC converter designed to create a dual polarity regulated voltage for powering several signal chains. The positive regulator is a boost converter (with 20V output) while the other is an inverting charge pump (with –20V output).
Like all boards in the Signal Chain Power series, this board is designed to be easily plugged into other SCP boards to form a complete signal chain power system, enabling fast evaluation of low power signal chains. To evaluate this board, some universal SCP hardware is required, namely:
To properly evaluate SCP series demo boards, you will need the SCP Configurator companion software. SCP Configurator can help you choose the right board and topology for your design.
Note that the Demo Manual does not cover details important to the operation and configuration regarding the LT3463. Please refer to the LT3463 data sheet for a complete description of the part.
Demonstration circuit 679 features the LT3463EDD in two circuits. One circuit is optimized for small size (9mA max output current) and the other for high performance (13mA max output current). Both circuits are dual output ±20V voltage regulators with a 2.7V to 6V input voltage range. The positive regulator is a boost converter and the negative rail is an inverting charge pump.
Tools & Simulations
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.
Models for the following parts are available in LTspice:
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.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.