LP3991TL-15 Texas Instruments Integrated Circuit (BGA) In Stock
The LP3991TL-15 is a low-dropout LDO linear voltage regulator delivering 300 mA at a fixed 1.5 V output. It features ultra-low quiescent current and stable regulation across -40°C to 125°C. Available in a compact SOT-23 package from FindMyChip with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- BGA
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- LP3991TL-15 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LP3991TL-15?
- Ultra-low dropout voltage enabling efficient 300 mA regulation at 1.5 V output
- Wide operating temperature range from -40°C to 125°C for industrial environments
- Compact SOT-23 package ideal for space-constrained portable and battery-powered designs
What is LP3991TL-15 used for?
The LP3991TL-15 suits portable electronics, IoT sensor nodes, and battery-powered devices requiring a stable 1.5 V rail from a low supply. Its low quiescent current makes it ideal for always-on subsystems such as real-time clocks and memory keep-alive circuits. It also works well in hand-held instruments and wearable designs where efficiency and compact footprint are critical.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Country of Origin | Country of Origin |
Where can I find the LP3991TL-15 datasheet?
LP3991TL-15 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LP3991TL-15?
Compatible alternatives and drop-in replacements for LP3991TL-15:
Frequently Asked Questions
What output current can the LP3991TL-15 deliver continuously?
The LP3991TL-15 can deliver up to 300 mA of continuous output current at a fixed 1.5 V output, making it suitable for microcontrollers, sensors, and low-power RF modules that require a stable sub-2 V supply rail.
Over what temperature range is the LP3991TL-15 specified to operate?
The LP3991TL-15 is rated for operation from -40°C to 125°C junction temperature, covering both commercial and extended industrial temperature ranges for demanding environments such as automotive accessories and outdoor equipment.
When would LP3991TL-15 be preferred over a higher-voltage LDO in a battery-powered design?
When the target supply rail is exactly 1.5 V and the input voltage is only slightly higher, the LP3991TL-15's low dropout voltage minimizes power loss. A typical 300 mA load running at 1.5 V loses less than 150 mW across the device, extending battery run-time versus a less efficient alternative.
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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.
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