LT1534: Ultralow Noise 2A Switching Regulator Data Sheet9/30/2009210K
Features and Benefits
- Greatly Reduced Conducted and Radiated EMI
- Low Switching Harmonic Content
- Independent Control of Switch Voltage and Current Slew Rates
- 2A Current Limited Power Switch
- 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
The LT1534/LT1534-1 are a new class of switching regulator designed to reduce conducted and radiated electromagnetic interference (EMI). Ultralow noise and EMI are achieved by providing user control of the output switch slew rates. Voltage and current slew rates can be independently programmed to optimize switcher harmonic content versus efficiency.
The LT1534/LT1534-1 can reduce high frequency harmonic power by as much as 40dB with only minor losses in efficiency. The LT1534/LT1534-1 utilize a current mode architecture optimized for low noise boost topologies. The ICs include a 2A power switch along with all necessary oscillator, control and protection circuitry. Unique error amp circuitry can regulate both positive and negative voltages. The internal oscillator may be synchronized to an external clock for more accurate placement of switching harmonics. Protection features include cycle-by-cycle current limit protection, undervoltage lockout and thermal shutdown.
Low minimum supply voltage and low supply current during shutdown make the LT1534/LT1534-1 well suited for portable applications. The LT1534/LT1534-1 are available in the 16-pin narrow SO package.
- Precision Instrumentation Systems
- Isolated Supplies for Industrial Automation
- Medical Instruments
- Wireless Communications
- Single Board Data Acquisition Systems
Markets and Technologies
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
R386 Reliability Data3/22/2018139 K
AN118 - High Voltage, Low Noise, DC/DC Converters6/17/20152M
AN75 - Circuitry for Signal Conditioning and Power Conversion8/20/2007495K
DN178 - LT1534 Ultralow Noise Switching Regulator Controls EMI4/10/201496K
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|Part Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|LT1534CS#PBF||Material Declaration||Reliability Data||16-Lead SOIC (Narrow 0.15 Inch)|
|LT1534CS#TRPBF||Material Declaration||Reliability Data||16-Lead SOIC (Narrow 0.15 Inch)|
|LT1534CS-1#PBF||Material Declaration||Reliability Data||16-Lead SOIC (Narrow 0.15 Inch)|
|LT1534CS-1#TRPBF||Material Declaration||Reliability Data||16-Lead SOIC (Narrow 0.15 Inch)|
|LT1534IS#PBF||Material Declaration||Reliability Data||16-Lead SOIC (Narrow 0.15 Inch)|
|LT1534IS#TRPBF||Material Declaration||Reliability Data||16-Lead SOIC (Narrow 0.15 Inch)|
|LT1534IS-1#PBF||Material Declaration||Reliability Data||16-Lead SOIC (Narrow 0.15 Inch)|
|LT1534IS-1#TRPBF||Material Declaration||Reliability Data||16-Lead SOIC (Narrow 0.15 Inch)|
|Wafer Fabrication Data||R386 Reliability Data|
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