LT1683
PRODUCTIONSlew Rate Controlled Ultralow Noise Push-Pull DC/DC Controller
- Part Models
- 4
- 1ku List Price
- Starting From $7.23
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 VIN, 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
Documentation
Data Sheet 1
User Guide 1
Application Note 1
Technical Articles 2
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 | ||
| LT1683EG#TRPBF | 20-Lead SSOP | ||
| LT1683IG#PBF | 20-Lead SSOP | ||
| LT1683IG#TRPBF | 20-Lead SSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Aug 6, 2022 - 22_0171 Laser Top Mark Conversion for SSOP Packages Assembled in PNG |
||
| 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
Can't find the software or driver you need?
Request a Driver/SoftwareHardware 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.
Evaluation Kits
LT1683EG | Low Noise/EMI Switching Power Supply, 36V to 72VIN, 5VOUT @ 2A