Datasheet Linear Technology LT3045

Manufacturer	Linear Technology
Series	LT3045

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

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PDF, 3.0 Mb, Revision: A, File uploaded: Oct 20, 2017

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Packaging

	LT3045EDD#PBF	LT3045EDD#TRPBF	LT3045EMSE#PBF	LT3045EMSE#TRPBF	LT3045HDD#PBF	LT3045HDD#TRPBF	LT3045IDD#PBF	LT3045IDD#TRPBF	LT3045IMSE#PBF	LT3045IMSE#TRPBF
N	1	2	3	4	5	6	7	8	9	10
Package	3x3 DFN-10 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	MS-12E Package Outline Drawing	MS-12E Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	MS-12E Package Outline Drawing	MS-12E Package Outline Drawing
Package Code	DD	DD	MSE	MSE	DD	DD	DD	DD	MSE	MSE
Package Index	05-08-1699	05-08-1699	05-08-1666	05-08-1666	05-08-1699	05-08-1699	05-08-1699	05-08-1699	05-08-1666	05-08-1666
Pin Count	10	10	12	12	10	10	10	10	12	12

Parametrics

Parameters / Models	LT3045EDD#PBF	LT3045EDD#TRPBF	LT3045EMSE#PBF	LT3045EMSE#TRPBF	LT3045HDD#PBF	LT3045HDD#TRPBF	LT3045IDD#PBF	LT3045IDD#TRPBF	LT3045IMSE#PBF	LT3045IMSE#TRPBF
Demo Boards	DC2491A	DC2491A	DC2491A	DC2491A	DC2491A	DC2491A	DC2491A	DC2491A	DC2491A	DC2491A
Design Tools	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File
Discrete Pass Element	no	no	no	no	no	no	no	no	no	no
Dropout Voltage, V	0.26	0.26	0.26	0.26	0.26	0.26	0.26	0.26	0.26	0.26
Export Control	no	no	no	no	no	no	no	no	no	no
Features	Ultralow Noise, Ultrahigh PSRR, Current Source Reference, Output Current Monitor, Power Good, Shutdown	Ultralow Noise, Ultrahigh PSRR, Current Source Reference, Output Current Monitor, Power Good, Shutdown	Ultralow Noise, Ultrahigh PSRR, Current Source Reference, Output Current Monitor, Power Good, Shutdown	Ultralow Noise, Ultrahigh PSRR, Current Source Reference, Output Current Monitor, Power Good, Shutdown	Ultralow Noise, Ultrahigh PSRR, Current Source Reference, Output Current Monitor, Power Good, Shutdown	Ultralow Noise, Ultrahigh PSRR, Current Source Reference, Output Current Monitor, Power Good, Shutdown	Ultralow Noise, Ultrahigh PSRR, Current Source Reference, Output Current Monitor, Power Good, Shutdown	Ultralow Noise, Ultrahigh PSRR, Current Source Reference, Output Current Monitor, Power Good, Shutdown	Ultralow Noise, Ultrahigh PSRR, Current Source Reference, Output Current Monitor, Power Good, Shutdown	Ultralow Noise, Ultrahigh PSRR, Current Source Reference, Output Current Monitor, Power Good, Shutdown
Ishutdown, µA	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3
Isupply, mA	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4
LDO Output Current, A	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5
Max Junction Temp, Deg	150	150	150	150	150	150	150	150	150	150
Number of Outputs	1	1	1	1	1	1	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85	-40 to 125	-40 to 125	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Output Current, A	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5
Output Voltage	Adj	Adj	Adj	Adj	Adj	Adj	Adj	Adj	Adj	Adj
PSRR, dB	76	76	76	76	76	76	76	76	76	76
RMS Noise, µV	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8
Theta JA	34В°C/W (DD), 33В°C/W (MSE)	34В°C/W (DD), 33В°C/W (MSE)	34В°C/W (DD), 33В°C/W (MSE)	34В°C/W (DD), 33В°C/W (MSE)	34В°C/W (DD), 33В°C/W (MSE)	34В°C/W (DD), 33В°C/W (MSE)	34В°C/W (DD), 33В°C/W (MSE)	34В°C/W (DD), 33В°C/W (MSE)	34В°C/W (DD), 33В°C/W (MSE)	34В°C/W (DD), 33В°C/W (MSE)
Type	PNP	PNP	PNP	PNP	PNP	PNP	PNP	PNP	PNP	PNP
Vin Max, V	20	20	20	20	20	20	20	20	20	20
Vin Min, V	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.8
Vout Max, V	15	15	15	15	15	15	15	15	15	15

Eco Plan

	LT3045EDD#PBF	LT3045EDD#TRPBF	LT3045EMSE#PBF	LT3045EMSE#TRPBF	LT3045HDD#PBF	LT3045HDD#TRPBF	LT3045IDD#PBF	LT3045IDD#TRPBF	LT3045IMSE#PBF	LT3045IMSE#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Application Notes

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Measuring 2nV/в€љHz Noise and 120dB Supply Rejection on Linear Regulators &mdash AN159
PDF, 1.1 Mb, File published: Feb 2, 2016
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Application Note 159
February, 2016
Measuring 2nV/в€љHz Noise and 120dB Supply Rejection
on Linear Regulators
The Quest for Quiet
Todd Owen and Amit Patel
Introduction MEASURING OUTPUT VOLTAGE NOISE A quiet, well regulated supply is important for optimum
performance with a number of circuit applications. Voltage controlled oscillators (VCOs) and precision voltage
controlled crystal oscillators (VCXOs) respond to small
changes in their supply very quickly. Phase-locked loops
(PLLs) require a stable supply as signal on the supply
translates directly to phase noise in the output. RF amplifiers require quiet supplies as they have little to no ability
to reject supply variations and regulator variation will
appear as unwanted side bands and lower the signal-tonoise ratio. Low noise amplifiers and analog-to-digital
converters (ADCs) do not have infinite supply rejection
and the cleaner the regulator output is, the higher their
performance. These are just a few applications where linear
regulators are required to provide quiet power supply rails,
but how does one ensure that the regulator is performing
as advertised? Being Quiet is Nothing New Once fully built, one can determine if the supply being
used has low enough noise for the application. Oscillator
phase noise is measured and compared against results
achieved with a known good supply, ADCs are checked …

Articles

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Industry's First 0.8µVRMS Noise LDO Has 79dB Power Supply Rejection Ratio at 1MHz &mdash LT Journal
PDF, 1.1 Mb, File published: Apr 7, 2015
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April 2015 I N T H I S I S S U E patent-pending boost-buck
LED driver topology 8 I2C programmable
supervisors with EEPROM
12 Volume 25 Number 1 IndustryвЂ™s First 0.8ВµVRMS Noise
LDO Has 79dB Power Supply
Rejection Ratio at 1MHz
Amit Patel 18V buck-boost converter
with intelligent PowerPath
control delivers >2A 16 advantages of 75W boost
mode LED driver 22 how to design an isolated,
high frequency, push-pull
DC/DC converter 25 When it comes to powering noise-sensitive analog/RF applications,
low dropout (LDO) linear regulators are generally preferred over their
switching counterparts. Low noise LDOs power a wide range of
analog/RF designs, including frequency synthesizers (PLLs/VCOs),
RF mixers and modulators, high speed and high resolution data
converters (ADCs and DACs) and precision sensors. Nevertheless,
these applications have reached capabilities and sensitivities
that are testing the limits of conventional low noise LDOs.
For instance, in many high end VCOs, power supply noise
directly affects the VCO output phase noise (jitter). Moreover,
to meet overall system efficiency requirements, the LDO
usually post-regulates the output of a relatively noisy …

Model Line

Series: LT3045 (10)

LT3045EDD#PBF LT3045EDD#TRPBF LT3045EMSE#PBF LT3045EMSE#TRPBF LT3045HDD#PBF LT3045HDD#TRPBF LT3045IDD#PBF LT3045IDD#TRPBF LT3045IMSE#PBF LT3045IMSE#TRPBF

Manufacturer's Classification

Power Management > LDO Linear Regulators > Positive Linear Regulators (LDO)