LT3015IDD-3.3#PBF Analog Devices Integrated Circuit (Small Outline No-lead) In Stock
Analog Devices LT3015IDD-3.3#PBF is a fixed 3.3 V, 1.5 A low-dropout negative linear regulator with a 0.31 V typical dropout voltage, precision current limit, and low output noise, operating from 3.8 V to 30 V input in an 8-pin DFN package. It is designed for demanding analog and RF power supply applications where negative rail cleanliness and tight current limiting are required. Available globally through authorized distributors with standard industrial temperature grade stock.
- Manufacturer
- Analog Devices
- Package
- Small Outline No-lead
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LT3015IDD-3.3#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.1500(MOQ 10)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed -3.3 V output with 0.31 V typical dropout voltage at 1.5 A enables near-full-input-range efficiency on negative supply rails from -3.8 V to -30 V input
- Precision current limit with programmable threshold protects downstream analog circuitry from overload while maintaining accurate 1.5 A maximum current in sensitive RF and audio supply designs
- Low output noise performance in an 8-pin DFN package minimizes interference on negative supply rails powering op-amps, ADCs, and RF front-end circuits
Applications
The LT3015IDD-3.3#PBF is used in split-supply analog signal chain boards where a clean -3.3 V negative rail is needed for op-amp bias, ADC negative reference supply, or RF component negative gate voltage. Its low dropout of 0.31 V and precision current limit make it well-suited for laboratory instruments, medical imaging analog front-ends, and software-defined radio receiver boards that require low-noise negative voltage regulation. The 30 V maximum input range also supports industrial systems powered from -12 V or -15 V system buses that need a regulated -3.3 V derived supply.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1698 |
| YTEOL | 8.5 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.5V |
| Dropout Voltage1-Nom | 0.31V |
| Input Voltage-Max | 30V |
| Input Voltage-Min | 3.8V |
| JESD-30 Code | S-PDSO-N8 |
| JESD-609 Code | e3 |
| Load Regulation-Max | 0.025% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 1.5A |
| Output Voltage1-Max | 3.366V |
| Output Voltage1-Min | 3.234V |
| Output Voltage1-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC8,.11,20 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Regulator Type | FIXED NEGATIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Voltage Tolerance-Max | 2% |
| Package | Small Outline No-lead |
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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the dropout voltage and output current rating of LT3015IDD-3.3#PBF at full load?
The LT3015IDD-3.3#PBF has a typical dropout voltage of 0.31 V and a maximum of 0.5 V at 1.5 A output current, meaning it can maintain a regulated -3.3 V output from an input as low as -3.8 V. This low dropout is critical for efficiency in negative rail applications where the supply voltage is close to the regulated output.
What input voltage range does LT3015IDD-3.3#PBF support, and which system bus voltages is it compatible with?
The LT3015IDD-3.3#PBF accepts input voltages from -3.8 V to -30 V, making it compatible with -5 V, -12 V, -15 V, and -24 V system buses commonly found in industrial instrumentation, telecom line cards, and analog signal processing equipment that need a regulated -3.3 V negative output derived from a higher-voltage bus.
How does the precision current limit of LT3015IDD-3.3#PBF protect sensitive analog loads?
The precision current limit clamps output current at a defined threshold below 1.5 A, preventing excessive current from reaching downstream op-amps, DAC reference circuits, or RF components during a short-circuit event or startup inrush. The tight limit accuracy, typically within ±10%, avoids nuisance tripping while still protecting components rated for currents below 1 A on the -3.3 V rail.
How does LT3015IDD-3.3#PBF compare to discrete negative regulator implementations using LM337 for ADC supply filtering?
Compared to a discrete LM337-based negative regulator, the LT3015IDD-3.3#PBF offers a significantly lower dropout of 0.31 V versus LM337's typical 3 V, lower output noise important for ADC VREF and analog supply rails, and integrated precision current limiting in an 8-pin DFN footprint that eliminates external current-sense resistors and reduces PCB area by approximately 40% compared to an LM337 design with protection components.
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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 |
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| 10+ | $6.7090 | $67.09 |
| 19+ | $5.5000 | $104.50 |
| 1000+ | $4.1500 | $4150.00 |
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