LT3045IMSE#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices LT3045IMSE#PBF is a high-performance adjustable linear LDO voltage regulator delivering up to 500 mA output current with an ultralow noise floor and ultrahigh PSRR, rated for input voltages up to 20 V and a typical dropout voltage of 0.22 V. Packaged in a compact 12-lead MSOP, it achieves 0.0033% maximum load regulation. Globally stocked for RF, precision analog, and noise-sensitive power supply applications in communications and instrumentation.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 12
- Lifecycle
- ACTIVE
- Datasheet
- LT3045IMSE#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.4700(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LT3045IMSE#PBF?
- Ultralow output noise and ultrahigh PSRR for clean power rails in RF and precision analog circuits
- 500 mA output current with 0.22 V typical dropout voltage enabling efficient low-headroom regulation up to 20 V input
- 0.0033% maximum load regulation ensuring tight output voltage stability under dynamic load conditions
- Compact 12-lead MSOP (MSOP-12) package enabling high power density on space-constrained PCBs
What is LT3045IMSE#PBF used for?
The LT3045IMSE#PBF is ideal for powering noise-sensitive circuits such as RF VCOs, PLLs, ADC reference supplies, and low-phase-noise oscillators where supply noise directly degrades system performance. Its ultrahigh PSRR across a wide frequency range effectively isolates sensitive analog stages from switching regulator ripple on the input rail. The 500 mA capability and adjustable output also suit precision instrumentation, optical transceivers, and test-equipment analog front ends requiring ultra-clean, stable voltage rails.
What are the specifications of LT3045IMSE#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1666 |
| YTEOL | 9 |
| Adjustability | ADJUSTABLE |
| Dropout Voltage1-Max | 0.45V |
| Dropout Voltage1-Nom | 0.22V |
| JESD-30 Code | R-PDSO-G12 |
| JESD-609 Code | e3 |
| Load Regulation-Max(%) | 0.0033% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.5A |
| Output Voltage1-Max | 15V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Regulator Type | ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Where can I find the LT3045IMSE#PBF datasheet?
LT3045IMSE#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT3045IMSE#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the LT3045IMSE#PBF achieve ultralow noise performance, and what PSRR can designers expect across frequency?
The LT3045IMSE#PBF uses an internal precision reference and low-noise error amplifier architecture to achieve an output noise floor in the single-digit nV/√Hz range. Its ultrahigh PSRR, exceeding 70 dB at 1 MHz typical, suppresses switching regulator ripple on the input rail before it reaches noise-sensitive RF and analog loads, making it a preferred post-regulator after DC-DC converters.
What is the dropout voltage of the LT3045IMSE#PBF, and how does it affect headroom in low-voltage regulator designs?
The LT3045IMSE#PBF has a typical dropout voltage of only 0.22 V at full load, with a maximum of 0.45 V at 500 mA. This low dropout enables regulation from input supplies as close as 220 mV above the desired output, which is critical in battery-powered systems or cascaded regulator chains where minimizing voltage headroom directly extends battery run time or reduces heat dissipation.
For which RF or precision analog circuit blocks is the LT3045IMSE#PBF particularly well-suited as a supply regulator?
The LT3045IMSE#PBF is specifically suited for powering RF voltage-controlled oscillators (VCOs), phase-locked loops (PLLs), low-noise amplifiers (LNAs), and high-resolution ADC reference circuits where supply noise couples directly into phase noise or conversion accuracy. At 500 mA output and up to 20 V input, it handles the current demands of these blocks while providing > 70 dB PSRR to isolate them from noisy upstream switching supplies.
Can multiple LT3045IMSE#PBF regulators be paralleled to increase output current beyond 500 mA?
Yes, the LT3045IMSE#PBF is specifically designed for parallel operation using its ILIM pin to balance current sharing between devices. By connecting the ILIM pins of two or more regulators, designers can scale output current in 500 mA increments while maintaining the ultralow noise and high PSRR characteristics of a single device, enabling clean multi-ampere rails for RF power amplifiers and high-current analog subsystems.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $8.6640 | $8.66 |
| 5+ | $5.6316 | $28.16 |
| 40+ | $5.0000 | $200.00 |
| 52+ | $4.8121 | $250.23 |
| 65+ | $4.6241 | $300.57 |
| 1000+ | $4.4700 | $4470.00 |
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