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LT3045IMSE#TRPBF

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IC REG LIN POS PROG 500MA 12MSOP

Part Number: LT3045IMSE#TRPBF

Manufacturer: Analog Devices Inc.

Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package: 12-TSSOP (0.118", 3.00mm Width) Exposed Pad

Datasheet:: LT3045IMSE#TRPBF.pdf

Description: IC REG LIN POS PROG 500MA 12MSOP

Select Quantity Stock: 12,999

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PRODUCT INFORMATION

Product Details

PRODUCT TECHNICAL REFERENCE

LT3045IMSE#TRPBF 20V, 500mA, Ultralow Noise, Ultrahigh PSRR Linear Regulator

A comprehensive technical overview of the LT3045IMSE#TRPBF, an I-Grade high-performance low-dropout linear regulator from Analog Devices featuring 500mA output current, 1.8V to 20V wide input range, 0.8µVRMS ultralow output noise, and 76dB PSRR at 1MHz. Covers device function, core features, electrical specifications, 12-lead MSOP-EP package, pin configuration, typical applications, and replacement selection guidance.

Analog Devices 12-MSOP-EP 1.8V to 20V

Device Classification Ultralow Noise LDO Voltage Regulator

Part Number: LT3045IMSE#TRPBF

Mounting Type: Surface Mount

Operating Temperature Range: -40°C to +125°C

PRODUCT OVERVIEW

What Is the LT3045IMSE#TRPBF?

LT3045IMSE#TRPBF is an I-Grade high-performance low-dropout linear regulator from Analog Devices featuring Linear Technology'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[reference:0].

The LT3045IMSE#TRPBF operates with an input voltage range of 1.8V to 20V and delivers an adjustable output voltage from 0V to 15V[reference:1]. It supplies 500mA at a typical 260mV dropout voltage[reference:2]. Operating quiescent current is nominally 2.2mA and drops to less than 1µA in shutdown[reference:3].

The device offers ultralow RMS noise of 0.8µVRMS (10Hz to 100kHz) and ultralow spot noise of 2nV/√Hz at 10kHz, with ultrahigh PSRR of 76dB at 1MHz[reference:4]. The LT3045's wide output voltage range maintains unity-gain operation, providing virtually constant output noise, PSRR, bandwidth, and load regulation, independent of the programmed output voltage[reference:5]. The regulator features programmable current limit, fast start-up capability, and programmable power-good to indicate output voltage regulation[reference:6]. The LT3045 is stable with a minimum 10µF ceramic output capacitor[reference:7]. The LT3045IMSE#TRPBF is offered in a 12-lead MSOP-EP package and is rated for operation from –40°C to +125°C as an I-Grade device[reference:8].

Ultralow Noise LDO 0.8µVRMS output noise (10Hz–100kHz) and 2nV/√Hz spot noise at 10kHz for noise-sensitive loads[reference:9].

Wide VIN & Adjustable VOUT 1.8V to 20V input, 0V to 15V adjustable output with 500mA output current[reference:10].

Ultrahigh PSRR 76dB at 1MHz with virtually constant performance across the entire output voltage range[reference:11].

DEVICE HIGHLIGHTS

Key Features and Benefits of LT3045IMSE#TRPBF

Ultralow Noise (0.8µVRMS)

0.8µVRMS output noise (10Hz–100kHz) and 2nV/√Hz spot noise at 10kHz make this LDO ideal for powering noise-sensitive loads such as PLLs, VCOs, and high-speed ADCs[reference:12].

Ultrahigh PSRR

76dB PSRR at 1MHz with virtually constant performance across the entire output voltage range, delivering excellent ripple rejection for demanding RF and instrumentation applications[reference:13].

Wide Input & Output Range

Operates from 1.8V to 20V input with an adjustable output from 0V to 15V, accommodating a broad spectrum of applications[reference:14].

500mA Output with Low Dropout

Delivers 500mA output current with a typical 260mV dropout voltage, providing high efficiency in low-headroom designs[reference:15].

Easy Paralleling for Higher Current

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[reference:16].

Compact 12-Lead MSOP-EP Package

Available in a 12-lead MSOP-EP package with exposed pad for optimal thermal performance, ideal for space-constrained designs[reference:17].

REFERENCE DATA

Technical Specifications for LT3045IMSE#TRPBF

Part Number	LT3045IMSE#TRPBF	Manufacturer	Analog Devices
Device Type	Ultralow Noise LDO Voltage Regulator	Output Current	500mA[reference:18]
Input Voltage Range	1.8V to 20V[reference:19]	Output Voltage Range	0V to 15V (Adjustable)[reference:20]
Dropout Voltage (Typical)	260mV @ 500mA[reference:21][reference:22]	Dropout Voltage (Max)	0.45V @ 500mA[reference:23]
Output Noise (RMS)	0.8µVRMS (10Hz–100kHz)[reference:24]	Output Noise (Spot)	2nV/√Hz at 10kHz[reference:25]
PSRR (1MHz)	76dB[reference:26]	PSRR (120Hz–10MHz)	117dB ~ 53dB[reference:27]
Quiescent Current (Iq)	2.2mA (Typical)[reference:28]	Quiescent Current (Max)	25mA[reference:29]
Shutdown Current	<1µA[reference:30]	SET Pin Current	100µA[reference:31]
Package / Case	12-TSSOP (0.118", 3.00mm Wide) Exposed Pad[reference:32]	Supplier Device Package	12-MSOP-EP[reference:33]
Package Body Size	3.00mm × 3.00mm (0.118")[reference:34]	Pin Count	12[reference:35]
Mounting Type	Surface Mount[reference:36]	Operating Temperature Range	-40°C to +125°C (TJ)[reference:37][reference:38]
Protection Features	Over Current, Over Temperature, Reverse Polarity, UVLO[reference:39]	Control Features	Enable, Power Good, Soft Start[reference:40]
Moisture Sensitivity Level	MSL 1 - Unlimited[reference:41][reference:42]	RoHS	ROHS3 Compliant[reference:43]
REACH Status	REACH Unaffected[reference:44]	SVHC	No SVHC (23-Jan-2024)[reference:45][reference:46]
Packaging	Tape & Reel (2,500 per Reel)[reference:47]	Product Status	Active[reference:48]

Electrical values shown above are reference values. Test conditions, limits, and guaranteed performance should always be confirmed from the current official manufacturer datasheet before design or production use.

DESIGN REFERENCE

Circuit Considerations for LT3045IMSE#TRPBF

Output Voltage Programming & Key Features

The LT3045IMSE#TRPBF output voltage is set with a single resistor[reference:49]:

Output Voltage Programming: Single resistor programs the output voltage from 0V to 15V[reference:50]
SET Pin Current: 100µA with ±1% initial accuracy[reference:51]
Output Voltage Range: 0V to 15V, maintaining unity-gain operation for constant noise and PSRR performance[reference:52]
Programmable Current Limit: Allows setting of maximum output current[reference:53]
Fast Start-Up: Programmable soft-start capability[reference:54]
Power Good: Programmable power-good indicator for output voltage regulation[reference:55]

PCB and Power-Supply Guidance

LDO regulator performance depends on layout and component selection:

Output Capacitor: Stable with a minimum 10µF ceramic output capacitor[reference:56]
Single Capacitor: A single capacitor improves both noise and PSRR performance[reference:57]
Paralleling: Can be easily paralleled to further reduce noise, increase output current, and spread heat on the PCB[reference:58]
Exposed Pad: The exposed pad on the MSOP-EP package must be soldered to the PCB for optimal thermal performance
PCB Layout: Keep the SET pin resistor trace short and close to the device for accurate voltage setting
Verify the recommended PCB footprint from the official datasheet prior to production

12-LEAD MSOP-EP (3mm × 3mm)

Pin Configuration Reference for LT3045IMSE#TRPBF

LT3045

MSOP-EP TOP VIEW

Confirm package orientation and pin numbering against the official package drawing before PCB layout. The MSOP-EP package has 12 pins with a 3.00mm × 3.00mm body size. The exposed pad must be soldered to the PCB for optimal thermal and electrical performance.

1 PG Power Good - Open-drain output indicates output voltage regulation[reference:59]

2 EN/UVLO Enable / Undervoltage Lockout - Active high enable with programmable UVLO threshold[reference:60]

3 SS Soft-Start - Capacitor programs output ramp rate[reference:61]

4 ILIM Current Limit - Resistor programs current limit threshold

5 NC No Connect - Not internally connected

6 SET Output Voltage Set - Resistor to ground programs output voltage[reference:62]

7 OUT Regulated Output - Connect to load

8 OUT Regulated Output - Connect to load

9 IN Input Voltage - 1.8V to 20V[reference:63]

10 IN Input Voltage - 1.8V to 20V[reference:64]

11 NC No Connect - Not internally connected

12 NC No Connect - Not internally connected

APPLICATION AREAS

Typical Applications for LT3045IMSE#TRPBF

RF & Wireless Infrastructure

Ultralow noise and ultrahigh PSRR make this LDO ideal for powering VCOs, PLLs, synthesizers, LNAs, and PAs[reference:65].

High-Speed Data Converters

Provides clean power rails for high-resolution ADCs and DACs, maintaining signal integrity in precision measurement systems[reference:66].

Medical & Healthcare Equipment

Low-noise performance suitable for portable and stationary medical devices including imaging and diagnostics[reference:67].

High-Precision Instrumentation

Test and measurement equipment, data acquisition systems, and analytical instruments benefit from the device's low-noise characteristics[reference:68].

Industrial & Automotive

Wide input voltage range and robust protection features suit industrial sensors and automotive infotainment applications[reference:69].

Post-Regulator for Switching Supplies

Provides clean, low-noise post-regulation for switching power supplies in noise-sensitive applications[reference:70].

REPLACEMENT GUIDANCE

Selecting an Alternative for LT3045IMSE#TRPBF

A replacement for the LT3045IMSE#TRPBF should not be selected solely by product category. The electrical characteristics, package, and pin configuration must be evaluated against the specific circuit requirements. The following alternatives are documented in the official Analog Devices product pages and datasheets.

Output current: 500mA[reference:71]

Input voltage range: 1.8V–20V[reference:72]

Output voltage range: 0V–15V[reference:73]

Output noise: 0.8µVRMS[reference:74]

PSRR: 76dB at 1MHz[reference:75]

Package: 12-MSOP-EP[reference:76]

Temperature range: –40°C to 125°C[reference:77]

Protection: Overcurrent, thermal, reverse polarity, UVLO[reference:78]

Family alternatives:

Part Number	Output Current	Package	Packaging	Carrier Quantity
LT3045IMSE#TRPBF	500mA	12-MSOP-EP	Tape & Reel	2,500[reference:79]
LT3045IMSE#PBF	500mA	12-MSOP-EP	Tube	-
LT3045EMSE#TRPBF	500mA	12-MSOP-EP	Tape & Reel	2,500
LT3045EDD#TRPBF	500mA	10-DFN (3mm × 3mm)	Tape & Reel	2,500
LT3045IDD#TRPBF	500mA	10-DFN (3mm × 3mm)	Tape & Reel	2,500

All alternative part numbers listed above are documented in the official Analog Devices product pages[reference:80][reference:81]. The LT3045IMSE#TRPBF is the I-Grade (–40°C to 125°C) version in 12-MSOP-EP package with tape-and-reel packaging (2,500 units per reel). For tube packaging, consider LT3045IMSE#PBF[reference:82]. For E-Grade (–40°C to 125°C) versions, consider LT3045EMSE#TRPBF[reference:83]. For a smaller package option (DFN), consider the LT3045EDD#TRPBF or LT3045IDD#TRPBF versions[reference:84]. Select based on package, packaging, and temperature grade requirements.

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MANUFACTURER INFORMATION

Analog Devices

The LT3045 (LT3045IMSE#TRPBF) belongs to the LT3045 family of ultralow noise, ultrahigh PSRR linear regulators from Analog Devices[reference:85]. The device features Linear Technology's ultralow noise and ultrahigh PSRR architecture for powering noise-sensitive applications[reference:86]. 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[reference:87]. The LT3045 family is widely used in RF infrastructure, precision instrumentation, medical equipment, and high-end audio applications[reference:88].

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Technical Information Disclaimer

This technical guide is provided for product identification and preliminary reference only. Electrical limits, package dimensions, pin configuration, product status, and application suitability must be verified using current official manufacturer documentation before design, procurement, or production.

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Specifications

Product Attribute: Attribute Value

Part Number: LT3045IMSE#TRPBF

Manufacturer: Analog Devices Inc.

Package: 12-TSSOP (0.118", 3.00mm Width) Exposed Pad

Series: -

Package/Case: 12-TSSOP (0.118", 3.00mm Width) Exposed Pad

Packaging: Tape & Reel (TR)

Product Status: Active

Output Configuration: Positive

Output Type: Adjustable

Number of Regulators: 1

Voltage - Input (Max): 20V

Voltage - Output (Min/Fixed): 0V

Voltage - Output (Max): 15V

Voltage Dropout (Max): 0.45V @ 500mA

Current - Output: 500mA

Current - Quiescent (Iq): 20 µA

Current - Supply (Max): 25 mA

PSRR: 117dB ~ 53dB (120Hz ~ 10MHz)

Control Features: Enable, Power Good, Soft Start

Protection Features: Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)

Operating Temperature: -40°C ~ 125°C (TJ)

Grade: -

Qualification: -

Mounting Type: Surface Mount

Supplier Device Package: 12-MSOP-EP

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1. How can I order LT3045IMSE#TRPBF from Haishengye Electronics?

Submit an RFQ directly on this page with your required quantity, target price and delivery requirements. Our sales team will review the request and provide a quotation.

2. How does Haishengye Electronics verify the quality of LT3045IMSE#TRPBF?

We work with qualified suppliers and review sourcing channels, traceability, packaging and product condition before shipment.

3. Are the stock and price of LT3045IMSE#TRPBF updated in real time?

Electronic component inventory and prices may change frequently. Displayed values are references, and final stock and pricing will be confirmed in the quotation.

4. Which payment methods are supported?

Wire Transfer, PayPal, Alipay, WeChat, Credit Card, Western Union, MoneyGram and Escrow may be supported depending on the order and destination.

5. How is international shipping arranged?

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6. What is the return or replacement process for LT3045IMSE#TRPBF?

Contact our sales team within the agreed period if there are quantity differences, incorrect items or clear external defects. Products should remain unused and in their original packaging.

7. Can I request technical support for LT3045IMSE#TRPBF?

Yes. Contact our team for datasheets, package details, product specifications, alternative parts and sourcing assistance.

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Part Number: LT3045IMSE#TRPBF

Manufacturer: Analog Devices Inc.

Package: 12-TSSOP (0.118", 3.00mm Width) Exposed Pad

Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

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