LTC2920

RECOMMENDED FOR NEW DESIGNS

Single/Dual Power Supply Margining Controller

Part Models: 9
1ku List Price: Starting From $1.72

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Overview

Margin Voltage Precision <0.4%
400:1 Current Programming Range
Symmetric/Asymmetric High and Low Voltage Margining
Single Control Pin per Supply-High, Float, Low
Single Current Setting Resistor per Supply
Wide V_CC Compliance 2.3V < V_CC < 6V
Wide Output Compliance 0.6V < V_MARGIN < (V_CC - 0.6V)
Single in 5-Pin ThinSOT^™ (LTC2920-1)
Dual in 8-Pin MSOP (LTC2920-2)

The LTC2920 allows power supplies and power supply module output voltages to be precisely adjusted both up and down for automated PCB testing. The power supply output voltage is changed by sourcing or sinking current into the feedback node or voltage adjust pin of the power supply. This allows a system to test the correct operation of electrical components at the upper and/or lower power supply voltage limits specified for a given design (Power Supply "Margining").

The LTC2920 uses a single resistor to set the voltage margining current. The margining current is adjustable over a 400:1 range. Precision margin currents can be supplied to within 0.6V of ground or V_CC.

The LTC2920-1 is a single margining controller. The LTC2920-2 has two independently controllable margining channels. Each channel has its own control pin and current setting resistor. The LTC2920-2 can be used to symmetrically margin two power supplies, or asymmetrically margin a single power supply.

Both the LTC2920-1 and LTC2920-2 feature a trimmed onboard voltage reference. Typical power supply margining accuracy is better than 0.4%.

Applications

Automated PCB Production Testing
Automated Preventative Maintenance Testing
DC/DC Converter Module Margining

Part Models: 9
1ku List Price: Starting From $1.72

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
LTC2920-1CS5#TR	5-Lead TSOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2920-1CS5#TRMPBF	5-Lead TSOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2920-1CS5#TRPBF	5-Lead TSOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2920-1IS5#TRMPBF	5-Lead TSOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2920-1IS5#TRPBF	5-Lead TSOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2920-2CMS8#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2920-2CMS8#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2920-2IMS8#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2920-2IMS8#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0128_Form Material_Report
LTC2920-2CMS8#PBF	PRODUCTION
LTC2920-2CMS8#TRPBF	PRODUCTION
LTC2920-2IMS8#PBF	PRODUCTION
LTC2920-2IMS8#TRPBF	PRODUCTION
Jun 5, 2024 - 24_0004 Epoxy Change from Henkel 8290 to 8290A for MSOP (3)
		PCN24_0004_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC2920-2IMS8#PBF	PRODUCTION
LTC2920-2IMS8#TRPBF	PRODUCTION
Jun 12, 2025 - 25_0047 Carsem SnPb Packaging End of Life
		PDN25_0047_Form Material_Report
LTC2920-1CS5#TR	LAST TIME BUY	PDN25_0047_Form Material_Report
May 24, 2021 - 20_0074 Discontinuation of Sn/Pb Plated Lead Finish Parts for S5, S6, TS8 Packages
		PDN20_0074_Form Material_Report
LTC2920-1CS5#TR	LAST TIME BUY	PDN20_0074_Form Material_Report

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
Power System Management (PSM) & Sequencers 2
LTC2974	RECOMMENDED FOR NEW DESIGNS	4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
LTC2970 LTC2970-1		Dual I²C Power Supply Monitor and Margining Controller

Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

LTC2920-1
LTC2920-2

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.

Evaluation Kits

LTC2920-2CMS8 LTC1628CG | LTC2920 with Dual DC to DC Converter, 7V to 24V Input, 5V @ 12A max = VOUT1, 3.3V @ 12A max = VOUT2

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Product Details

DC543A Demo Board for:
LTC1628 High Efficiency, 2-Phase Synchronous Step-Down Switching Regulator
LTC2920 Single/Dual Power Supply Margining Controller