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LT3045 Datasheet

LT3045 Datasheet

20V, 500mA, Ultralow Noise, Ultrahigh PSRR Linear Regulator
Part No.: LT3045
Page: 32 Pages
Size: 5354 KB
Manufacturer: Linear Technology
Logo:
Views: 1
Update Time: 2023-12-01 10:37:52
DataSheet: Download

LT3045 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LT3045EDD#PBF Tube 121 LGYP 1 10 -40°C ~ 125°C 10-Lead (3mm × 3mm) Plastic DFN  
LT3045EDD#TRPBF Reel 2500 LGYP 1 10 -40°C ~ 125°C 10-Lead (3mm × 3mm) Plastic DFN  
LT3045EDD#TRMPBF Reel 500 LGYP 1 10 -40°C ~ 125°C 10-Lead (3mm × 3mm) Plastic DFN  
LT3045IDD#PBF Tube 121 LGYP 1 10 -40°C ~ 125°C 10-Lead (3mm × 3mm) Plastic DFN  
LT3045IDD#TRPBF Reel 2500 LGYP 1 10 -40°C ~ 125°C 10-Lead (3mm × 3mm) Plastic DFN  
LT3045IDD#TRMPBF Reel 500 LGYP 1 10 -40°C ~ 125°C 10-Lead (3mm × 3mm) Plastic DFN  
LT3045HDD#PBF Tube 121 LGYP 1 10 -40°C ~ 150°C 10-Lead (3mm × 3mm) Plastic DFN  
LT3045HDD#TRPBF Reel 2500 LGYP 1 10 -40°C ~ 150°C 10-Lead (3mm × 3mm) Plastic DFN  
LT3045HDD#TRMPBF Reel 500 LGYP 1 10 -40°C ~ 150°C 10-Lead (3mm × 3mm) Plastic DFN  
LT3045MPDD#PBF Tube 121 LGYP 1 10 -55°C ~ 150°C 10-Lead (3mm × 3mm) Plastic DFN  
LT3045MPDD#TRPBF Reel 2500 LGYP 1 10 -55°C ~ 150°C 10-Lead (3mm × 3mm) Plastic DFN  
LT3045MPDD#TRMPBF Reel 500 LGYP 1 10 -55°C ~ 150°C 10-Lead (3mm × 3mm) Plastic DFN  
LT3045EMSE#PBF Tube 37 3045 1 12 -40°C ~ 125°C 12-Lead Plastic MSOP  
LT3045EMSE#TRPBF Reel 2500 3045 1 12 -40°C ~ 125°C 12-Lead Plastic MSOP  
LT3045EMSE#TRMPBF Reel 500 3045 1 12 -40°C ~ 125°C 12-Lead Plastic MSOP  
LT3045IMSE#PBF Tube 37 3045 1 12 -40°C ~ 125°C 12-Lead Plastic MSOP  
LT3045IMSE#TRPBF Reel 2500 3045 1 12 -40°C ~ 125°C 12-Lead Plastic MSOP  
LT3045IMSE#TRMPBF Reel 500 3045 1 12 -40°C ~ 125°C 12-Lead Plastic MSOP  
LT3045HMSE#PBF Tube 37 3045 1 12 -40°C ~ 150°C 12-Lead Plastic MSOP  
LT3045HMSE#TRPBF Reel 2500 3045 1 12 -40°C ~ 150°C 12-Lead Plastic MSOP  
LT3045HMSE#TRMPBF Reel 500 3045 1 12 -40°C ~ 150°C 12-Lead Plastic MSOP  
LT3045EMSE#WPBF Tube 37 3045 1 12 -40°C ~ 125°C 12-Lead Plastic MSOP  
LT3045EMSE#WTRPBF Reel 2500 3045 1 12 -40°C ~ 125°C 12-Lead Plastic MSOP  
LT3045EMSE#WTRMPBF Reel 500 3045 1 12 -40°C ~ 125°C 12-Lead Plastic MSOP  
LT3045IMSE#WPBF Tube 37 3045 1 12 -40°C ~ 125°C 12-Lead Plastic MSOP  
LT3045IMSE#WTRPBF Reel 2500 3045 1 12 -40°C ~ 125°C 12-Lead Plastic MSOP  
LT3045IMSE#WTRMPBF Reel 500 3045 1 12 -40°C ~ 125°C 12-Lead Plastic MSOP  
LT3045HMSE#WPBF Tube 37 3045 1 12 -40°C ~ 150°C 12-Lead Plastic MSOP  
LT3045HMSE#WTRPBF Reel 2500 3045 1 12 -40°C ~ 150°C 12-Lead Plastic MSOP  
LT3045HMSE#WTRMPBF Reel 500 3045 1 12 -40°C ~ 150°C 12-Lead Plastic MSOP  
LT3045HMSE#Z-EP Tube 37   1 12 -55°C ~ 150°C 12-Lead MSOP  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LT3045 Datasheet(PDF)

LT3045 Datasheet(Picture)

LT3045 Features

  • Ultralow RMS Noise: 0.8µVRMS (10Hz to 100kHz)
  • Ultralow Spot Noise: 2nV/√Hz at 10kHz
  • Ultrahigh PSRR: 76dB at 1MHz
  • Output Current: 500mA
  • Wide Input Voltage Range: 1.8V to 20V
  • Single Capacitor Improves Noise and PSRR
  • 100µA SET Pin Current: ±1% Initial Accuracy
  • Single Resistor Programs Output Voltage
  • High Bandwidth: 1MHz
  • Programmable Current Limit
  • Low Dropout Voltage: 260mV
  • Output Voltage Range: 0V to 15V
  • Programmable Power Good
  • Fast Start-Up Capability
  • Precision Enable/UVLO
  • Parallelable for Lower Noise and Higher Current
  • Internal Current Limit with Foldback
  • Minimum Output Capacitor: 10μF Ceramic
  • Reverse-Battery and Reverse-Current Protection
  • 12-Lead MSOP and 10-Lead 3mm × 3mm DFN Packages
  • AEC-Q100 Qualified for Automotive Applications

LT3045 Applications

  • RF Power Supplies: PLLs, VCOs, Mixers, LNAs, PAs
  • Very Low Noise Instrumentation
  • High Speed/High Precision Data Converters
  • Medical Applications: Imaging, Diagnostics
  • Precision Power Supplies
  • Post-Regulator for Switching Supplies

LT3045 Description

The LT3045 is a high performance low dropout linear regulator featuring LTC’s ultralow noise and ultrahigh PSRR architecture for powering noise sensitive applications. Designed as a precision current reference followed by a high performance voltage buffer, the LT3045 can be easily paralleled to further reduce noise, increase output current and spread heat on the PCB.

The device supplies 500mA at a typical 260mV dropout voltage. Operating quiescent current is nominally 2.2mA and drops to <<1µA in shutdown. The LT3045’s wide output voltage range (0V to 15V) while maintaining unity-gain operation provides virtually constant output noise, PSRR, bandwidth and load regulation, independent of the programmed output voltage. Additionally, the regulator features programmable current limit, fast start-up capability and programmable power good to indicate output voltage regulation.

The LT3045 is stable with a minimum 10µF ceramic output capacitor. Built-in protection includes reverse-battery protection, reverse-current protection, internal current limit with foldback and thermal limit with hysteresis. The LT3045 is available in thermally enhanced 12-Lead MSOP and 10-Lead 3mm × 3mm DFN packages.

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