Linear Technology/Analog Devices' LT3045 is a 20 V, 500 mA low dropout (LDO) regulator. This regulator features ultra-low noise and ultra-high 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 500 mA at a typical 260 mV dropout voltage. Operating quiescent current is nominally 2.2 mA and drops to <1 μA in shutdown. This regulator's wide output voltage range (0 V to 15 V) 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 10 μF ceramic output capacitor. Built-in protection includes reverse-battery protection, reverse-current protection, internal current limit with foldback, and thermal limit with hysteresis. The regulator comes in a 10- and 12-pin DFN package as well as 12-pin MOSP package. The LT3045 was designed for noise sensitive power supply applications found in instrumentation, test, and medical designs.


Features
Programmable current limit Reverse-battery and reverse-current protection Fast start-up capability Voltage input: 20 V max Voltage output: 0 V to 15 V		Low dropout voltage: 260 mV Current output: 500 mA Temperature operating range: -40°C to +125°C/150°C Package/case: 10-DFN, 12-DFN, 12-MSOP, 12-MSOP-EP
Applications
RF power supplies: PLLs, VCOs, mixers, LNAs, PAs Instrumentation High speed/high precision data converters Medical applications		Imaging Diagnostics Power supplies Switching supplies

Eval Boards

	Image	Manufacturer Part Number	Description	Utilized IC / Part		View Details
		DC2491A	DEMO BOARD FOR LT3045	LT3045
		DC2593A	LT3045EDD-1 DEMO BOARD 20V, 500M	LT3045-1

LT3045 LDO Regulator

Manufacturer Part Number	Description	Operating Temperature	Mounting Type	Package / Case
LT3045EDD#PBF	IC REG LINEAR 500MA 10DFN	-40°C ~ 125°C (TJ)	Surface Mount	10-WFDFN Exposed Pad
LT3045EMSE#PBF	IC REG LINEAR 500MA 12MSOP	-40°C ~ 125°C (TJ)	Surface Mount	12-TSSOP (0.118", 3.00mm Width) Exposed Pad
LT3045EDD-1#PBF	IC REG LINEAR 500MA 12DFN	-40°C ~ 125°C (TJ)	Surface Mount	12-WFDFN Exposed Pad
LT3045EDD#TRPBF	IC REG LINEAR 500MA 10DFN	-40°C ~ 125°C (TJ)	Surface Mount	10-WFDFN Exposed Pad
LT3045EMSE-1#PBF	IC REG LINEAR 500MA 12MSOP	-40°C ~ 125°C (TJ)	Surface Mount	12-TSSOP (0.118", 3.00mm Width) Exposed Pad