LTC660

PRODUCTION

100mA CMOS Voltage Converter

Part Models: 3
1ku List Price: Starting From $4.06

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Overview

Simple Conversion of 5V to -5V Supply
Output Drive: 100mA
R_OUT: 6.5Ω (0.65V Loss at 100mA)
Boost Pin (Pin 1) for Higher Switching Frequency
Inverting and Doubling Modes
Minimum Open Circuit Voltage Conversion Efficiency: 99%
Typical Power Conversion Efficiency with a 100mA Load: 88%
Easy to Use

The LTC660 is a monolithic CMOS switched-capacitor voltage converter. It performs supply voltage conversion from positive to negative from an input range of 1.5V to 5.5V, resulting in complementary output voltages of –1.5V to –5.5V. It also performs a doubling at an input voltage range of 2.5V to 5.5V, resulting in a doubled output voltage of 5V to 11V. Only two external capacitors are needed for the charge pump and charge reservoir functions.

The converter has an internal oscillator that can be overdriven by an external clock or slowed down when connected to a capacitor. The oscillator runs at a 10kHz frequency when unloaded. A higher frequency outside the audio band can also be obtained if the BOOST pin is tied to V⁺.

The LTC660 contains an internal oscillator, divide-by-two, voltage level shifter and four power MOSFETs.

Applications

Conversion of 5V to ±5V Supplies
Inexpensive Negative Supplies
Data Acquisition Systems
High Current Upgrade to LTC1044 or 7660

Part Models: 3
1ku List Price: Starting From $4.06

Documentation

Data Sheet 1

LTC660: 100mA CMOS Voltage Converter Data Sheet 08/24/2007

Reliability Data 1

R302 Reliability Data 03/22/2018

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
LTC660CN8#PBF	8-Lead PDIP (Narrow 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC660CS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC660CS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 8, 2024 - 24_0234 Migrating Bottom Trace Code Marking to Top Side Laser Marking for PDIP Package
		PCN24_0234_Form Material_Report Marking Comparison
LTC660CN8#PBF	PRODUCTION	PCN24_0234_Form Material_Report Marking Comparison
Oct 11, 2022 - 22_0241 Epoxy Change from Henkel 8290 to 8290A for PDIP Package
		PCN22_0241_Form Material_Report Qualification Results Summary
LTC660CN8#PBF	PRODUCTION
Aug 6, 2022 - 22_0172 Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]
		PCN22_0172_Form Material_Report Delta Qualification Matrix
LTC660CN8#PBF	PRODUCTION
Dec 14, 2023 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)
		PCN22_0255_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC660CS8#PBF	PRODUCTION
LTC660CS8#TRPBF	PRODUCTION
Jun 16, 2021 - 21_0026 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM
		PCN21_0026_Form Material_Report Delta Qualification Matrix
LTC660CS8#PBF	PRODUCTION
LTC660CS8#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LTC660

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