LT3045 20V, 500mA, Ultralow Noise, Ultrahigh PSRR Linear Regulator

PublishTime：2021-12-10

●DESCRIPTION
■The LT®3045 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.
●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
●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

Brand of Product：	ADI
Part#：	LT3045 、 LT3045EDD#PBF 、 LT3045IDD#PBF 、 LT3045HDD#PBF 、 LT3045MPDD#PBF 、 LT3045EMSE#PBF 、 LT3045IMSE#PBF 、 LT3045HMSE#PBF 、 LT3045EMSE#WPBF 、 LT3045IMSE#WPBF 、 LT3045HMSE#WPBF 、 LT3045EDD#TRPBF 、 LT3045IDD#TRPBF 、 LT3045HDD#TRPBF 、 LT3045MPDD#TRPBF 、 LT3045EMSE#TRPBF 、 LT3045IMSE#TRPBF 、 LT3045HMSE#TRPBF 、 LT3045EMSE#WTRPBF 、 LT3045IMSE#WTRPBF 、 LT3045HMSE#WTRPBF 、 LT1761 、 LT1763 、 LT3042 、 LT3055 、 LT3065 、 LT3080 、 LT3085 More Part#
Product Category：	Ultralow Noise Ultrahigh PSRR Linear Regulator 、 high performance low dropout linear regulator More
Application：	[ RF Power Supplies ][ PLLs ][ VCOs ][ Mixers ][ LNAs ][ PAs ][ Very Low Noise Instrumentation ][ High Speed Data Converters ][ High Precision Data Converters ][ Medical Applications ][ Imaging ][ Diagnostics ][ Precision Power Supplies ][ Post-Regulator for Switching Supplies ] More
Data Type：	Datasheet More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：	DFN;MSOP
Language：	English Chinese Chinese and English Japanese
Date of Creation：	2021/3/22
Version Number：	Rev. C
Data Encoding：
Data Size：	2.7 MB

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