LTC1504

PRODUCTION

500mA Low Voltage Step-Down Synchronous Switching Regulator

Part Models: 8
1ku List Price: Starting From $3.48

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Overview

500mA Output Current at 3.3V Output
Up to 92% Peak Efficiency
Internal Reference Trimmed to 1%
Output Can Source or Sink Current
Requires as Few as Four External Components
Input Voltage Range: 4V to 10V
Adjustable Current Limit
Small SO-8 Package
200kHz Switching Frequency Can be Synchronized Up to 500kHz

The LTC1504 is a self-contained, high efficiency synchronous buck switching regulator. It includes a pair of on-chip 1.5Ω power switches, enabling it to supply up to 500mA of load current. Efficiency peaks at 92%, minimizing heat and wasted power. The synchronous buck architecture allows the output to source or sink current as required to keep the output voltage in regulation.

The LTC1504 is available in adjustable and fixed 3.3V output versions. An adjustable current limit circuit provides protection from overloads. The internal 1% reference combined with a sophisticated voltage feedback loop provides optimum output voltage accuracy and fast load transient response. The LTC1504 is specified to operate with input voltages between 4V and 10V. Contact the LTC factory for guaranteed specifications at 2.7V supply.

The LTC1504 is available in a plastic SO-8 package.

Applications

Small Portable Digital Systems
Active Termination
Auxiliary Output Voltage Supplies
Minimum Part Count/Size Switchers

Part Models: 8
1ku List Price: Starting From $3.48

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
LTC1504CS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1504CS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1504CS8-3.3#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1504CS8-3.3#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1504IS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1504IS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1504IS8-3.3#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1504IS8-3.3#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
LTC1504CS8#PBF	PRODUCTION
LTC1504CS8#TRPBF	PRODUCTION
LTC1504CS8-3.3#PBF	PRODUCTION
LTC1504CS8-3.3#TRPBF	PRODUCTION
LTC1504IS8#PBF	PRODUCTION
LTC1504IS8#TRPBF	PRODUCTION
LTC1504IS8-3.3#PBF	PRODUCTION
LTC1504IS8-3.3#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
LTC1504CS8#PBF	PRODUCTION
LTC1504CS8#TRPBF	PRODUCTION
LTC1504CS8-3.3#PBF	PRODUCTION
LTC1504CS8-3.3#TRPBF	PRODUCTION
LTC1504IS8#PBF	PRODUCTION
LTC1504IS8#TRPBF	PRODUCTION
LTC1504IS8-3.3#PBF	PRODUCTION
LTC1504IS8-3.3#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
LTC1504CS8#PBF	PRODUCTION
LTC1504CS8#TRPBF	PRODUCTION
LTC1504CS8-3.3#PBF	PRODUCTION
LTC1504CS8-3.3#TRPBF	PRODUCTION
LTC1504IS8#PBF	PRODUCTION
LTC1504IS8#TRPBF	PRODUCTION
LTC1504IS8-3.3#PBF	PRODUCTION
LTC1504IS8-3.3#TRPBF	PRODUCTION

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

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
LTC1504A	Obsolete	500mA Low Voltage Step-Down Synchronous Switching Regulator

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LTC1504
LTC1504-3.3
LTC1504A
LTC1504A-3.3

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.