LT3033EUDC#PBF Analog Devices Integrated Circuit (Other) In Stock
Analog Devices LT3033EUDC#PBF is a 3 A very low dropout linear regulator with 95 mV typical dropout, adjustable 0.95 V to 10 V output, and programmable current limit, housed in a 20-pin QFN package for high-current low-noise power rails.
- Manufacturer
- Analog Devices
- Package
- Other
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- LT3033EUDC#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.1400(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low 95 mV typical dropout at 3 A output enables high efficiency regulation from near-rail input voltages
- Programmable current limit via external resistor protects load circuits and enables accurate charge current control in battery systems
- Adjustable 0.95 V to 10 V output range covers FPGA core, DDR memory, and processor I/O supply rails in a single design
- 20-pin QFN package with exposed pad provides excellent thermal dissipation for sustained 3 A output without external heatsink
Applications
The LT3033EUDC#PBF is designed for post-regulation of switching converter outputs in FPGA, DSP, and high-performance processor power systems where low-noise, accurate supply voltage is critical. Its ultra-low 95 mV dropout allows it to follow closely behind a buck regulator output with minimal input-output headroom, maximizing overall system efficiency. The programmable current limit feature is also leveraged in battery formation chargers, laboratory bench supplies, and precision current sources requiring adjustable protection thresholds.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1536 |
| Date Of Intro | 2018-08-14 |
| YTEOL | 10 |
| Adjustability | ADJUSTABLE |
| Dropout Voltage1-Max | 0.24V |
| Dropout Voltage1-Nom | 0.095V |
| Input-Output Voltage Differential-Max | 9.8V |
| Input-Output Voltage Differential-Min | 0.94V |
| JESD-30 Code | R-PQCC-N20 |
| JESD-609 Code | e3 |
| Line Regulation-Max (%/V) | 0.07054 |
| Load Regulation-Max(%) | 1% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 3A |
| Output Voltage1-Max | 9.7V |
| Output Voltage1-Min | 0.2V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC20,.12X.16,20 |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Regulator Type | ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the typical dropout voltage of the LT3033EUDC#PBF at full 3 A load, and how does that compare to standard LDOs?
The LT3033EUDC#PBF has a typical dropout voltage of only 95 mV at 3 A output current, with a maximum specification of 240 mV. Standard LDO regulators commonly exhibit 500 mV to 1.2 V dropout at comparable currents, so the LT3033 allows the input rail to be set 400 mV to 1 V lower, directly reducing power dissipation and heat in the regulator.
How is the current limit of the LT3033EUDC#PBF programmed, and what protection scenarios does this enable?
The LT3033EUDC#PBF current limit is set by connecting an external resistor between the ILIM and SET pins. By selecting resistor values, the designer can program the fold-back threshold anywhere from under 1 A to the full 3 A range, enabling load protection against short-circuits, inrush current limiting during capacitor charging, and precise charge current control in battery management systems.
What output voltage range does the LT3033EUDC#PBF support, and which digital IC supply rails does it cover?
The LT3033EUDC#PBF is adjustable from 0.95 V to 10 V via an external resistor divider. This spans FPGA core rails at 0.95 V to 1.0 V, DDR4 VDDQ at 1.2 V, processor I/O at 1.8 V and 3.3 V, and legacy 5 V logic supplies, making a single regulator model suitable for diverse digital supply requirements across a product platform.
How does the 20-pin QFN package of LT3033EUDC#PBF manage thermal dissipation at 3 A continuous output?
The 20-pin QFN package incorporates a large exposed thermal pad on its bottom surface that transfers heat directly to the PCB copper plane, achieving junction-to-board thermal resistance of approximately 20°C/W to 30°C/W with proper via stitching. At 3 A with 0.5 V input-output differential, total power dissipation is 1.5 W, which the package can sustain with modest copper pours without requiring an external heatsink.
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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+ | $9.8700 | $9.87 |
| 2+ | $7.3000 | $14.60 |
| 4+ | $5.4750 | $21.90 |
| 1000+ | $4.1400 | $4140.00 |
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