LT3080IQ#PBF Analog Devices Integrated Circuit (Other) In Stock
The LT3080IQ#PBF is a single-resistor adjustable LDO linear regulator delivering up to 1.1A output current with a 0.35V typical dropout voltage and 0.0036% load regulation. It features a 5-pin DDPAK package with an exposed die paddle for thermal management. From $5.80 in stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Other
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- LT3080IQ#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.5100(MOQ 19)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LT3080IQ#PBF?
- Single external resistor output voltage adjustment from 0V to maximum VIN simplifies design and supports paralleling multiple devices for increased output current
- Ultra-low 0.35V typical dropout voltage at 1.1A enables efficient regulation from low-headroom supplies including 3.3V to 2.5V or 5V to 3.3V conversions
- Exceptional 0.0036% load regulation and low output noise make it ideal for precision analog, RF, and sensor power supply applications
What is LT3080IQ#PBF used for?
The LT3080IQ#PBF is designed for precision analog and RF subsystem power supplies requiring low noise, low dropout, and accurate voltage adjustment using a single resistor. Its ability to parallel multiple devices makes it well-suited for high-current point-of-load applications on multi-layer PCBs where space is distributed across a board. The 5-pin DDPAK package with exposed paddle provides adequate thermal dissipation for continuous 1.1A loads in industrial and telecom equipment operating from -40°C to 125°C.
What are the specifications of LT3080IQ#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1461 |
| YTEOL | 10 |
| Adjustability | ADJUSTABLE |
| Dropout Voltage1-Max | 0.5V |
| Dropout Voltage1-Nom | 0.35V |
| JESD-30 Code | R-PSSO-G5 |
| JESD-609 Code | e3 |
| Load Regulation-Max(%) | 0.0036% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 1.1A |
| Output Voltage1-Max | 36V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Regulator Type | ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Matte Tin (Sn) - with Nickel (Ni) barrier |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.702mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Other |
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 LT3080IQ#PBF datasheet?
LT3080IQ#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT3080IQ#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does setting output voltage with a single resistor work on the LT3080IQ#PBF?
The LT3080IQ#PBF uses a 10 µA reference current output (ISET pin) that flows through a single external resistor to ground, setting the output voltage as VOUT = ISET × R. For example, a 330 kΩ resistor sets VOUT to approximately 3.3 V. This eliminates the resistor divider required by traditional LDOs, reduces component count by 1 part, and makes paralleling multiple LT3080 devices straightforward for higher output current.
What is the minimum dropout voltage of the LT3080IQ#PBF and how does it compare to standard LDOs?
The LT3080IQ#PBF achieves a typical dropout voltage of 0.35 V and a maximum of 0.5 V at 1.1 A output current. This is approximately 2-3× lower than conventional PNP-based LDOs rated at 1A, enabling 3.3 V regulation from a 3.7 V lithium-ion cell or 2.5 V regulation from a 3.0 V supply. The low dropout extends battery runtime in portable instruments and reduces power dissipation in space-constrained industrial applications.
Can multiple LT3080IQ#PBF devices be paralleled for higher output current, and how?
Yes, the LT3080IQ#PBF is specifically designed for paralleling. Connecting the SET pins together through equal resistors and tying OUTPUT pins together allows n devices to share load current nearly equally, achieving n × 1.1 A total output. Two devices in parallel provide 2.2 A, and three provide 3.3 A. Each device contributes to thermal spreading across the PCB, reducing hotspot temperature compared to a single high-current LDO in space-constrained 12 V industrial or telecom power stages.
Which noise-sensitive designs benefit most from the LT3080IQ#PBF over a switching regulator?
The LT3080IQ#PBF's low output noise (typically 40 µV RMS, 10 Hz to 100 kHz) and 0.0036% load regulation make it the preferred post-regulator for RF PLL VCO supplies, precision ADC reference rails, and sensitive sensor bias circuits where switching regulator ripple above 1 mV would degrade signal quality. Adding a 10 µF output capacitor and an optional 100 pF noise bypass on the SET pin reduces noise further for sub-µV sensitive analog frontends.
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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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