LT1533 - Ultralow Noise 1A Switching Regulator

Features
  • Greatly Reduced Conducted and Radiated EMI (<100µVP-P in Typical Application)
  • Low Switching Harmonic Content
  • Independent Control of Switch Voltage and Current Slew Rates
  • Two 1A Current Limited Power Switches
  • Regulates Positive and Negative Voltages
  • 20kHz to 250kHz Oscillator Frequency
  • Easily Synchronized to External Clock
  • Wide Input Voltage Range: 2.7V to 23V
  • Low Shutdown Current: 12µA Typical
  • Easier Layout than with Conventional Switchers
  • Outputs Can Be Forced to 50% Duty Cycle for Unregulated Applications
Typical Application

Applications
  • Precision Instrumentation Systems
  • Isolated Supplies for Industrial Automation
  • Medical Instruments
  • Wireless Communications
  • Single Board Data Acquisition Systems
Packaging
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LT1533CS#PBFSO-16C$5.50$4.65
LT1533CS#TRPBFSO-16C$4.71
LT1533IS#PBFSO-16I$7.65$6.15
LT1533IS#TRPBFSO-16I$6.21
Demo Boards
Part NumberDescriptionPrice
DC173BLT1533CS | ULTRA LOW NOISE BOOST CONVERTER, 5V INPUT, 12V OUT @ 150mAContact Factory
DC230A-ALT1533CS | Ultra Low Noise Bipolar Output DC/DC Converter, 5Vin to +/-12Vout @ 150mA, Vin min.=4.5V, 1.8W Output$125.00
DC230A-BLT1533CS | Ultra Low Noise Bipolar Output DC/DC Converter, 12Vin to +/-5Vout @ 700mA, Vin min.=10.8V, 3.5W Output$125.00
DC230A-CLT1533CS | Ultra Low Noise Bipolar Output DC/DC Converter, 5Vin to +/-15Vout @ 120mA, Vin min.=4.5V, 1.8W Output$125.00
DC230A-DLT1533CS | Ultra Low Noise Bipolar Output DC/DC Converter, 5Vin to +/-5Vout @ 350mA, Vin min.=4.5V, 1.8W Output$125.00
Datasheet
Spec Notice
Application Note
Design Note
Reliability Data
LT Journal
Related Product
Datasheet
LT1533 - Ultralow Noise1A Switching Regulator
Other
AN118 - High Voltage, Low Noise, DC/DC Converters
Feb 1998 LT1533 Ultralow Noise Switching Regulator for High Voltage or High Current Applications
LT1533 Footprints and Symbols
R386 Reliability Data
AN70 - A Monolithic Switching Regulator with 100µV Output Noise
AN75 - Circuitry for Signal Conditioning and Power Conversion
AN84 - Linear Technology Magazine Circuit Collection, Volume IV
AN90 - Current Sources for Fiber Optic Lasers: A Compendium of Pleasant Current Events
AN94 - Slew Rate Verification for Wideband Amplifiers: The Taming of the Slew
DN175 - Off-Line Low Noise Power Supply Does Not Require Filtering to Meet FCC Emission Requirements
LT1533 - SPECIFICATION NOTICE