LTC1514

PRODUCTION

Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparator

Part Models: 8
1ku List Price: Starting From $5.04

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Overview

3.3V or 5V Output Voltages
2V to 10V Input Voltage Range
Up to 50mA Output Current
Only Three External Capacitors Required
Soft Start Limits Inrush Current at Turn-On
Low Operating Current: 60µA
Low Shutdown Current: 10µA
Shutdown Disconnects Load from V_IN
Short-Circuit and Overtemperature Protected
650kHz Switching Frequency
Low-Battery Comparator Active in Shutdown
Available in SO-8 Package

The LTC1514-3.3/LTC1514-5 are micropower switched capacitor DC/DC converters that produce a regulated output voltage by either stepping up or stepping down the input voltage. Output voltage is fixed at either 3.3V (LTC1514-3.3) or 5V (LTC1514-5) by an internal resistor divider.

A unique architecture allows the parts to accommodate a wide input voltage range (2V to 10V) while maintaining +4% regulation. Additional circuitry prevents excessive inrush current and output voltage ripple when large V_IN to V_OUT differentials are present.

An internal uncommitted comparator is kept active in shutdown. The comparator has an open-drain output for flexible interfacing.

The parts are short-circuit and overtemperature protected. Battery life is maximized by very low operating currents (I_CC= 60µA typ, 10µA in shutdown). Both parts are available in an SO-8 package.

Applications

Battery Operated Equipment
Smart Card Readers
Local Power Supplies
Handheld Instruments
Battery Backup Supplies

Part Models: 8
1ku List Price: Starting From $5.04

Documentation

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
LTC1514CS8-3.3#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1514CS8-3.3#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1514CS8-5#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1514CS8-5#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1514IS8-3.3#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1514IS8-3.3#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1514IS8-5#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1514IS8-5#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package
		PCN24_0246_Form Material_Report Marking Comparison Delta Qualification Matrix
LTC1514CS8-3.3#PBF	PRODUCTION
LTC1514CS8-3.3#TRPBF	PRODUCTION
LTC1514CS8-5#PBF	PRODUCTION
LTC1514CS8-5#TRPBF	PRODUCTION
LTC1514IS8-3.3#PBF	PRODUCTION
LTC1514IS8-3.3#TRPBF	PRODUCTION
LTC1514IS8-5#PBF	PRODUCTION
LTC1514IS8-5#TRPBF	PRODUCTION
Oct 12, 2022 - 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
LTC1514CS8-3.3#PBF	PRODUCTION
LTC1514CS8-3.3#TRPBF	PRODUCTION
LTC1514CS8-5#PBF	PRODUCTION
LTC1514CS8-5#TRPBF	PRODUCTION
LTC1514IS8-3.3#PBF	PRODUCTION
LTC1514IS8-3.3#TRPBF	PRODUCTION
LTC1514IS8-5#PBF	PRODUCTION
LTC1514IS8-5#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
LTC1514CS8-3.3#PBF	PRODUCTION
LTC1514CS8-3.3#TRPBF	PRODUCTION
LTC1514CS8-5#PBF	PRODUCTION
LTC1514CS8-5#TRPBF	PRODUCTION
LTC1514IS8-3.3#PBF	PRODUCTION
LTC1514IS8-3.3#TRPBF	PRODUCTION
LTC1514IS8-5#PBF	PRODUCTION
LTC1514IS8-5#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:

LTC1514-3.3
LTC1514-5

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.

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Overview

Documentation

Data Sheet 1

Reliability Data 1

Application Note 1

Design Note 1