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LT3045HDD#TRPBF

Q: How can I order LT3045HDD#TRPBF from Haishengye Electronics?

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Q: How does Haishengye Electronics verify the quality of LT3045HDD#TRPBF?

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

Q: Are the stock and price of LT3045HDD#TRPBF updated in real time?

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IC REG LIN POS PROG 500MA 10DFN

Part Number: LT3045HDD#TRPBF

Manufacturer: Analog Devices Inc.

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

Package: 10-WFDFN Exposed Pad

Datasheet:: LT3045HDD#TRPBF.pdf

Description: IC REG LIN POS PROG 500MA 10DFN

Select Quantity Stock: 14,959

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PRODUCT INFORMATION

Product Details

PRODUCT TECHNICAL REFERENCE

LT3045HDD#TRPBF 20V, 500mA, Ultralow Noise, Ultrahigh PSRR Linear Regulator

A comprehensive technical overview of the LT3045HDD#TRPBF, an H-Grade high-performance low-dropout linear regulator from Analog Devices featuring a 1.8V to 20V input range, 0V to 15V adjustable output, 500mA output current, 0.8µVRMS ultralow RMS noise, 2nV/√Hz spot noise, 76dB PSRR at 1MHz, and a 10-lead 3mm × 3mm DFN package with an exposed pad. The H-Grade version is specified for operation from –40°C to +150°C junction temperature. Covers device function, core features, electrical specifications, pin configuration, typical applications, and replacement selection guidance.

Analog Devices 10-Lead DFN (3mm × 3mm w/ EP) 1.8V to 20V

Device Classification Ultralow Noise LDO Voltage Regulator

Part Number: LT3045HDD#TRPBF

Mounting Type: Surface Mount

Operating Temperature Range: -40°C to +150°C (T_J)

PRODUCT OVERVIEW

What Is the LT3045HDD#TRPBF?

LT3045HDD#TRPBF is an H-Grade high-performance low-dropout linear regulator from Analog Devices (Linear Technology) featuring the company'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 dropout voltage of 260mV. Operating quiescent current is nominally 2.2mA and drops to less than 1µA in shutdown. The LT3045's wide output voltage range of 0V to 15V, while maintaining unity-gain operation, provides virtually constant output noise, PSRR, bandwidth, and load regulation independent of the programmed output voltage.

The regulator features a single-resistor programmable output voltage with a 100µA SET pin current (±1% initial accuracy), programmable current limit, fast start-up capability, and a programmable power-good indicator. A single capacitor improves both noise and PSRR. Built-in protection includes reverse-battery protection, reverse-current protection, internal current limit with foldback, and thermal limit with hysteresis. The LT3045 is stable with a minimum 10µF ceramic output capacitor.

The LT3045HDD#TRPBF is the H-Grade version in a thermally enhanced 10-lead 3mm × 3mm DFN package with an exposed pad. It is specified for operation from –40°C to +150°C junction temperature and is AEC-Q100 qualified for automotive applications. The device is RoHS compliant, REACH unaffected, and in active production.

Ultralow Noise LDO 0.8µVRMS output noise (10Hz–100kHz) and 2nV/√Hz spot noise at 10kHz for noise-sensitive loads such as PLLs, VCOs, and high-speed ADCs.

Wide V_IN & Adjustable V_OUT 1.8V to 20V input, 0V to 15V adjustable output with 500mA output current and 260mV typical dropout voltage.

Ultrahigh PSRR & H-Grade 76dB at 1MHz with virtually constant performance across the output range. H-Grade specified for –40°C to +150°C junction temperature, AEC-Q100 qualified.

DEVICE HIGHLIGHTS

Key Features and Benefits of LT3045HDD#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.

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.

Wide Input & Adjustable Output

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

500mA Output with Low Dropout

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

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.

Compact 10-Lead DFN Package

Available in a 10-lead 3mm × 3mm DFN package with an exposed pad, ideal for space-constrained designs. H-Grade specified for –40°C to +150°C.

REFERENCE DATA

Technical Specifications for LT3045HDD#TRPBF

Part Number	LT3045HDD#TRPBF	Manufacturer	Analog Devices
Device Type	Ultralow Noise LDO Voltage Regulator	Output Configuration	Positive, Adjustable
Input Voltage Range (V_IN)	1.8V to 20V	Output Voltage Range (V_OUT)	0V to 15V (Adjustable)
Output Current (Max)	500mA	Dropout Voltage (Typical)	260mV @ 500mA
Dropout Voltage (Max)	450mV @ 500mA	Output Noise (RMS)	0.8µVRMS (10Hz–100kHz)
Output Noise (Spot)	2nV/√Hz at 10kHz	PSRR (1MHz)	76dB
PSRR (120Hz–10MHz)	117dB ~ 53dB	Quiescent Current (I_Q)	2.2mA (Typical)
Shutdown Current	<1µA	SET Pin Current	100µA ±1% Initial Accuracy
Minimum Output Capacitor	10µF Ceramic	Protection Features	Reverse-Battery, Reverse-Current, Current Limit with Foldback, Thermal Limit
Control Features	Programmable Current Limit, Fast Start-Up, Programmable Power Good, Precision Enable/UVLO	Package / Case	10-WFDFN Exposed Pad (3mm × 3mm)
Supplier Device Package	10-DFN (3x3)	Pin Count	10 (Plus Exposed Pad)
Mounting Type	Surface Mount	Operating Junction Temperature (H-Grade)	-40°C to +150°C
AEC-Q100 Qualification	Yes	RoHS	ROHS3 Compliant
REACH Status	REACH Unaffected	MSL Level	MSL 1 (Unlimited)
Product Status	Active / Recommended for New Designs	Packaging	Tape & Reel (2,500 per Reel)

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 LT3045HDD#TRPBF

Output Voltage Programming & Key Features

The LT3045HDD#TRPBF output voltage is set with a single resistor:

Output Voltage Programming: A single resistor between the SET pin and GND programs the output voltage from 0V to 15V. The SET pin sources a precision 100µA current with ±1% initial accuracy.
Unity-Gain Operation: Maintains constant noise, PSRR, bandwidth, and load regulation independent of the programmed output voltage.
Programmable Current Limit: An external resistor on the ILIM pin sets the maximum output current.
Fast Start-Up: A capacitor on the SET pin enables fast start-up capability.
Power Good: A programmable power-good indicator (PGFB pin) signals output voltage regulation.
Parallel Operation: Multiple devices can be paralleled to reduce noise, increase output current, and spread heat.

PCB and System-Level Guidance

LDO regulator performance depends on layout and component selection:

Output Capacitor: Stable with a minimum 10µF ceramic output capacitor. A single capacitor improves both noise and PSRR performance.
SET Pin Capacitor: A capacitor from SET to GND reduces output noise and improves PSRR. Use a split-capacitor technique for optimal performance.
Exposed Pad: The exposed pad on the DFN package is GND and must be soldered to the PCB for optimal thermal performance.
Kelvin Sense: Connect the OUTS pin directly to the output capacitor for optimal transient performance and load regulation.
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.

10-LEAD DFN (3mm × 3mm w/ EP)

Pin Configuration Reference for LT3045HDD#TRPBF

LT3045

DFN TOP VIEW

Confirm package orientation and pin numbering against the official package drawing before PCB layout. The DFN package has 10 pins with a 3.00mm × 3.00mm body size and an exposed pad (Pin 11). The exposed pad is GND and must be soldered to the PCB ground plane for optimal thermal and electrical performance.

1 IN Input Supply - 1.8V to 20V; Bypass with Ceramic Capacitor to GND

2 IN Input Supply - 1.8V to 20V

3 EN/UV Precision Enable/UVLO - High = On, Low = Off; Programmable UVLO via Resistor Divider

4 GND Ground - Connect to PCB Ground Plane

5 PG Power Good - Open-Drain Output; High = V_OUT In Regulation

6 ILIM Current Limit - External Resistor to GND Sets Maximum Output Current

7 SET Output Voltage Set - Resistor to GND Programs Output Voltage; 100µA Precision Current Source

8 PGFB Power Good Feedback - Programmable Power-Good Threshold

9 OUTS Output Sense - Kelvin Connect to Output Capacitor for Optimal Regulation

10 OUT Regulated Output - Connect to Load and Output Capacitor

11 EP Exposed Pad - GND; Must Be Soldered to PCB Ground Plane

APPLICATION AREAS

Typical Applications for LT3045HDD#TRPBF

RF & Wireless Infrastructure

Ultralow noise and ultrahigh PSRR make this LDO ideal for powering VCOs, PLLs, synthesizers, LNAs, and PAs.

High-Speed Data Converters

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

Medical & Healthcare Equipment

Low-noise performance suitable for portable and stationary medical devices requiring clean analog supplies.

Very Low Noise Instrumentation

Test and measurement equipment, data acquisition systems, and analytical instruments benefit from the device's ultralow noise characteristics.

Post-Regulator for Switching Supplies

Provides clean, low-noise post-regulation for switching power supplies in noise-sensitive applications.

Automotive & High-Temperature

AEC-Q100 qualified and H-Grade specified for –40°C to +150°C junction temperature, suitable for automotive and harsh-environment power supplies.

REPLACEMENT GUIDANCE

Selecting an Alternative for LT3045HDD#TRPBF

A replacement for the LT3045HDD#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

Input voltage range: 1.8V–20V

Output voltage range: 0V–15V

Output noise: 0.8µVRMS

PSRR: 76dB at 1MHz

Package: 10-DFN (3mm × 3mm)

Temperature range: –40°C to 150°C (H-Grade)

Protection: Overcurrent, thermal, reverse polarity, UVLO

Family alternatives (same package, different grade or packaging):

Part Number	Package	Temperature Grade	Packaging
LT3045HDD#TRPBF	10-DFN (3mm × 3mm)	H-Grade (–40°C to 150°C)	Tape & Reel
LT3045HDD#PBF	10-DFN (3mm × 3mm)	H-Grade (–40°C to 150°C)	Tube
LT3045EDD#TRPBF	10-DFN (3mm × 3mm)	E-Grade (–40°C to 125°C)	Tape & Reel
LT3045IDD#TRPBF	10-DFN (3mm × 3mm)	I-Grade (–40°C to 125°C)	Tape & Reel
LT3045MPDD#TRPBF	10-DFN (3mm × 3mm)	MP-Grade (–55°C to 150°C)	Tape & Reel

All alternative part numbers listed above are documented in the official Analog Devices product pages and datasheets. The LT3045HDD#TRPBF is the H-Grade (–40°C to 150°C) version in a 10-DFN package with tape-and-reel packaging (2,500 units per reel). For tube packaging in the same grade, consider LT3045HDD#PBF. For E-Grade or I-Grade operation in the same package, consider LT3045EDD#TRPBF or LT3045IDD#TRPBF. For MP-Grade (–55°C to 150°C), consider LT3045MPDD#TRPBF. For defense and aerospace applications, consider LT3045-EP or V62/21614. Select based on temperature grade, qualification, package, and packaging requirements.

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MANUFACTURER INFORMATION

Analog Devices

The LT3045 (LT3045HDD#TRPBF) belongs to the LT3045 family of ultralow noise, ultrahigh PSRR linear regulators from Analog Devices. The device features 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. The LT3045 family is recommended for new designs and is widely used in RF infrastructure, precision instrumentation, medical equipment, and high-end audio applications. The H-Grade version is specified for –40°C to +150°C junction temperature and is AEC-Q100 qualified for automotive applications.

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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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LT3045HDD#TRPBF Technical Information

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Specifications

Product Attribute: Attribute Value

Part Number: LT3045HDD#TRPBF

Manufacturer: Analog Devices Inc.

Package: 10-WFDFN Exposed Pad

Series: -

Package/Case: 10-WFDFN 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 ~ 150°C (TJ)

Grade: -

Qualification: -

Mounting Type: Surface Mount

Supplier Device Package: 10-DFN (3x3)

Frequently Asked Questions

1. How can I order LT3045HDD#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 LT3045HDD#TRPBF?

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

3. Are the stock and price of LT3045HDD#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?

International shipping may be arranged through DHL, UPS, FedEx, TNT and other logistics channels. Tracking information will be provided after shipment.

6. What is the return or replacement process for LT3045HDD#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 LT3045HDD#TRPBF?

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

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LT3045HDD#TRPBF Procurement and Technical Support

LT3045HDD#TRPBF is manufactured by Analog Devices Inc.. This page provides purchasing information including manufacturer, category, package, datasheet, stock reference, price reference and product specifications.

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Part Number: LT3045HDD#TRPBF

Manufacturer: Analog Devices Inc.

Package: 10-WFDFN Exposed Pad

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

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