LM1084ISX-3.3/NOPB Texas Instruments Integrated Circuit (Other) In Stock
LM1084ISX-3.3/NOPB is a Texas Instruments 5 A low-dropout linear regulator with a fixed 3.3 V output and 1.3 V typical dropout voltage. It accepts input voltages from 4.8 V to 29 V and delivers stable regulation for high-current loads. Available in TO-263 package with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- LM1084ISX-3.3/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.9750(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM1084ISX-3.3/NOPB?
- 5 A continuous output current with only 1.3 V typical dropout voltage for efficient low-headroom regulation
- Fixed 3.3 V output optimized for powering FPGAs, DSPs, and logic ICs from higher-voltage rails
- Wide input voltage range of 4.8 V to 29 V accommodating diverse unregulated supply sources
- TO-263 (D2PAK) SMD package with exposed tab for high-power thermal dissipation on PCB copper planes
What is LM1084ISX-3.3/NOPB used for?
LM1084ISX-3.3/NOPB is used in post-regulator stages of switching power supplies where a clean 3.3 V rail at up to 5 A is required for FPGAs, microcontrollers, and DDR memory modules. It is suitable for industrial control boards and communication equipment where a low-noise linear regulator is preferred over a switcher for analog and RF supply domains. The wide input range and high output current also make it effective in battery-backed systems operating from 6 V to 24 V supply rails.
What are the specifications of LM1084ISX-3.3/NOPB?
| Pbfree Code | Yes |
| Reach Compliance Code | Not Compliant |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 1.5V |
| Dropout Voltage1-Nom | 1.3V |
| Input Voltage Absolute-Max | 27V |
| Input Voltage-Max | 29V |
| Input Voltage-Min | 4.8V |
| JESD-30 Code | R-PSSO-G3 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.006% |
| Load Regulation-Max | 0.02% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 5.5A |
| Output Voltage1-Max | 3.365V |
| Output Voltage1-Min | 3.235V |
| Output Voltage1-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SMSIP3H,.55TB |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 245 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 2.54mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 2% |
| ## LM1084ISX-3.3/NOPB Alternates Showing results | Image |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the LM1084ISX-3.3/NOPB datasheet?
LM1084ISX-3.3/NOPB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM1084ISX-3.3/NOPB?
Compatible alternatives and drop-in replacements for LM1084ISX-3.3/NOPB:
Frequently Asked Questions
What is the output current capability and dropout voltage of LM1084ISX-3.3/NOPB under full load?
LM1084ISX-3.3/NOPB delivers up to 5 A of continuous output current with a typical dropout voltage of 1.3 V and a maximum of 1.5 V at full load, allowing regulation from input voltages as low as 4.8 V in a fixed 3.3 V output configuration.
Which input voltage range does LM1084ISX-3.3/NOPB support for powering 3.3 V digital logic systems?
LM1084ISX-3.3/NOPB operates from an input voltage range of 4.8 V to 29 V, with an absolute maximum of 27 V. This wide range accommodates 5 V, 12 V, and 24 V unregulated sources common in industrial and embedded digital 3.3 V power supply designs.
How does LM1084ISX-3.3/NOPB compare to LM317 as a 3.3 V regulator in high-current applications?
LM1084ISX-3.3/NOPB provides 5 A output versus LM317's 1.5 A maximum, and its 1.3 V dropout is significantly lower than LM317's 2.5 V minimum. For 3.3 V systems running from a 5 V rail with heavy loads above 1 A, LM1084ISX-3.3/NOPB is the preferred solution.
What thermal considerations apply when designing with LM1084ISX-3.3/NOPB in a 5 A application?
At 5 A with a 2 V input-output differential, the power dissipation is 10 W. The TO-263 package tab must be soldered to a PCB copper plane or external heatsink to keep junction temperature below 125°C, requiring careful thermal resistance calculation for reliable continuous operation.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.6000 | $2.60 |
| 10+ | $1.4625 | $14.63 |
| 35+ | $1.2090 | $42.32 |
| 47+ | $0.9750 | $45.82 |
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