LT3463 - Dual Micropower DC/DC Converters with Schottky Diodes

Features

  • 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 x 3mm DFN Package

Typical Application

LT3463 Typical Application
LT3463 Typical Application

Description

The LT3463/LT3463A are dual micropower DC/DC converters with internal Schottky diodes in a 10-lead 3mm x 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.

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
LT3463AEDD#PBF 3x3 DFN-10 DD E 05-08-1699 Yes
LT3463AEDD#TRPBF 3x3 DFN-10 DD E 05-08-1699 Yes
LT3463EDD#PBF 3x3 DFN-10 DD E 05-08-1699 Yes
LT3463EDD#TRPBF 3x3 DFN-10 DD E 05-08-1699 Yes


LT3463 Package Drawing

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
LT3463AEDD#PBF 3x3 DFN-10 E $2.79 $1.95 Yes
LT3463AEDD#TRPBF 3x3 DFN-10 E $2.15 Yes
LT3463EDD#PBF 3x3 DFN-10 E $2.79 $1.95 Yes
LT3463EDD#TRPBF 3x3 DFN-10 E $2.15 Yes
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* 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 Linear Technology sales office or authorized distributor.

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
DC679A LT3463EDD | Dual Output Converter, 2 Circuits, Vin = 2.7V to 6V, ±20Vout @ 9mA and ±20Vout @ 13mA $100.00
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Click here to view our complete list of demo boards

Applications

  • CCD Bias
  • LCD Bias
  • Handheld Computers
  • Digital Cameras

Product Notifications

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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:
LT3463
LT3463A

Technical Support