LP3991TL-1.5/NOPB Texas Instruments Integrated Circuit (BGA) In Stock
Texas Instruments LP3991TL-1.5/NOPB is a fixed 1.5 V, 300 mA ultra-low dropout LDO regulator with only 75 mV typical dropout and 6.5 V absolute maximum input in a 4-ball BGA package. Available lead-free from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- BGA
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- LP3991TL-1.5/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3200(MOQ 1000)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LP3991TL-1.5/NOPB?
- 75 mV typical dropout voltage at 300 mA output current, enabling regulation from supplies only slightly above 1.5 V output
- 1.65 V to 3.6 V input range with 6.5 V absolute maximum suits single Li-Ion, dual-AA, or 3.3 V bus-powered digital subsystems
- Miniature 4-ball BGA package provides the smallest possible footprint for space-critical DSP, FPGA, and processor core power rails
What is LP3991TL-1.5/NOPB used for?
The LP3991TL-1.5/NOPB is designed to power 1.5 V digital processor cores, DSP, and FPGA I/O banks from a 1.8 V or 3.3 V system supply with minimal headroom loss. Its 75 mV typical dropout allows the output to remain regulated even as the Li-Ion battery drops toward end-of-charge, extending usable battery runtime in handheld and portable devices. The 4-ball BGA package enables placement directly under or beside BGA processors on high-density PCBs where SOIC or SOT footprints would consume too much routing area.
What are the specifications of LP3991TL-1.5/NOPB?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.18V |
| Dropout Voltage1-Nom | 0.075V |
| Input Voltage Absolute-Max | 6.5V |
| Input Voltage-Max | 3.6V |
| Input Voltage-Min | 1.65V |
| JESD-30 Code | R-XBGA-B4 |
| JESD-609 Code | e1 |
| Line Regulation-Max | 0.024% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.3A |
| Output Voltage1-Max | 3V |
| Output Voltage1-Min | 1.2V |
| Output Voltage1-Nom | 1.5V |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | BGA4,2X2,20 |
| Package Shape | RECTANGULAR |
| Package Style | GRID ARRAY, VERY THIN PROFILE, FINE PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | Tin/Silver/Copper (Sn/Ag/Cu) |
| Terminal Form | BALL |
| Terminal Pitch | 0.5mm |
| Terminal Position | BOTTOM |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 3% |
| Package | BGA |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the LP3991TL-1.5/NOPB datasheet?
LP3991TL-1.5/NOPB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LP3991TL-1.5/NOPB?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the typical dropout voltage of LP3991TL-1.5/NOPB at its rated 300 mA output, and why is this critical for 1.8 V input designs?
The LP3991TL-1.5/NOPB has a typical dropout voltage of just 75 mV at 300 mA, with a maximum specified at 180 mV. When powered from a 1.8 V rail, the device maintains a regulated 1.5 V output with 300 mA current capability even with only 300 mV of headroom available, making it uniquely suited to step-down regulation within the same 1.8 V power domain common in multi-rail digital SoC platforms.
For a compact FPGA or DSP board, what advantage does the 4-ball BGA package of LP3991TL-1.5/NOPB provide over SOT-23 LDO alternatives?
The 4-ball BGA package of LP3991TL-1.5/NOPB occupies significantly less PCB area than a 5-pin SOT-23 and can be placed directly beneath a BGA processor on the opposite board layer, eliminating lengthy power traces. This proximity reduces IR drop and voltage ripple on the 1.5 V core rail, improving timing margins and EMI performance in high-speed FPGA and DSP designs operating at 300 mA load currents.
How does LP3991TL-1.5/NOPB extend battery runtime in handheld devices compared to a higher-dropout 1.5 V LDO?
Because LP3991TL-1.5/NOPB maintains regulation with only 75 mV typical dropout, it keeps supplying 1.5 V at 300 mA even when a Li-Ion battery discharges to 1.625 V per cell in multi-cell stacks or near end-of-discharge on 1.8 V rails. A conventional LDO with 300 mV dropout would cut out 225 mV sooner, wasting 10–15% of usable battery capacity that LP3991TL-1.5/NOPB recovers for the end application.
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Why Buy from FindMyChip
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
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| 1000+ | $0.4284 | $428.40 |
| 10000+ | $0.3819 | $3819.00 |
| 100000+ | $0.3200 | $32000.00 |
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