LT1683

PRODUCTION

Slew Rate Controlled Ultralow Noise Push-Pull DC/DC Controller

Part Models: 4
1ku List Price: Starting From $5.71

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Overview

Greatly Reduced Conducted and Radiated EMI
Low Switching Harmonic Content
Independent Control of Output Switch Voltage and Current Slew Rates
Greatly Reduced Need for External Filters
Dual N-Channel MOSFET Drivers
20kHz to 250kHz Oscillator Frequency
Easily Synchronized to External Clock
Regulates Positive and Negative Voltages
Easier Layout Than with Conventional Switchers

The LT1683 is a switching regulator controller designed to lower conducted and radiated electromagnetic interference (EMI). Ultralow noise and EMI are achieved by controlling the voltage and current slew rates of external N-channel MOSFET switches. Current and voltage slew rates can be independently set to optimize harmonic content of the switching waveforms vs efficiency. The LT1683 can reduce high frequency harmonic power by as much as 40dB with only minor losses in efficiency.

The LT1683 utilizes a dual output (push-pull) current mode architecture optimized for low noise topologies. The IC includes gate drivers and all necessary oscillator, control and protection circuitry. Unique error amp circuitry can regulate both positive and negative voltages. The oscillator may be synchronized to an external clock for more accurate placement of switching harmonics.

Protection features include gate drive lockout for low V_IN, opposite gate lockout, soft-start, output current limit, short-circuit current limiting, gate drive overvoltage clamp and input supply undervoltage lockout.

Applications

Power Supplies for Noise Sensitive Communication Equipment
EMI Compliant Offline Power Supplies
Precision Instrumentation Systems
Isolated Supplies for Industrial Automation
Medical Instruments
Data Acquisition Systems

Part Models: 4
1ku List Price: Starting From $5.71

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
LT1683EG#PBF	20-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1683EG#TRPBF	20-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1683IG#PBF	20-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1683IG#TRPBF	20-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Aug 6, 2022 - 22_0171 Laser Top Mark Conversion for SSOP Packages Assembled in PNG
		PCN22_0171_Form Material_Report Delta Qualification Matrix
LT1683EG#PBF	PRODUCTION
LT1683EG#TRPBF	PRODUCTION
LT1683IG#PBF	PRODUCTION
LT1683IG#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
Oscillators 1
LTC6930-X.XX		32.768kHz to 8.192MHz Precision µPower Oscillators

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LT1683

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.