LTC1046 - Inductorless 5V to -5V Converter

Features

  • 50mA Output Current
  • Plug-In Compatible with ICL7660/LTC1044
  • ROUT=35 Ohms Maximum
  • 300µA Maximum No Load Supply Current at 5V
  • Boost Pin (Pin 1) for Higher Switching Frequency
  • 97% Minimum Open-Circuit Voltage Conversion Efficiency
  • 95% Minimum Power Conversion Efficiency
  • Wide Operating Supply Voltage Range, 1.5V to 6V
  • Easy to Use
  • Low Cost

Typical Application

LTC1046 Typical Application
LTC1046 Typical Application

Description

The LTC1046 is a 50mA monolithic CMOS switched capacitor voltage converter. It plugs in for the ICL7660/LTC1044 in 5V applications where more output current is needed. The device is optimized to provide high current capability for input voltages of 6V or less. It trades off operating voltage to get higher output current. The LTC1046 provides several voltage conversion functions:the input voltage can be inverted (VOUT = µVIN), divided(VOUT = VIN/2) or multiplied (VOUT = +/-nVIN).

Designed to be pin-for-pin and functionally compatible with the ICL7660 and LTC1044, the LTC1046 provides 2.5 times the output drive capability.

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
LTC1046CN8#PBF N-8 N C 05-08-1510 (N8) Yes
LTC1046CS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1046CS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1046IN8#PBF N-8 N I 05-08-1510 (N8) Yes
LTC1046IS8#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LTC1046IS8#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes


LTC1046 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
LTC1046CN8#PBF N-8 C $2.70 $2.15 Yes
LTC1046CS8#PBF SO-8 C $3.50 $2.90 Yes
LTC1046CS8#TRPBF SO-8 C $2.96 Yes
LTC1046IN8#PBF N-8 I $3.33 $2.75 Yes
LTC1046IS8#PBF SO-8 I $4.33 $3.55 Yes
LTC1046IS8#TRPBF SO-8 I $3.61 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.

Click here to view our complete list of demo boards

Applications

  • Conversion of 5V to ±5V Supplies
  • Precise Voltage Division, VOUT=VIN/2
  • Supply Splitter, VOUT=±VS/2

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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:
LTC1046

Technical Support