LP2951ACSD-3.3 Texas Instruments In Stock
LP2951ACSD-3.3 is a 100mA fixed 3.3V low-dropout linear voltage regulator by Texas Instruments. Key specs: 3.3V output, 100mA output current, low quiescent current, SOT-23-5 package. From $1.13, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Price
- From $1.1254(MOQ 155)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 3.3V output with tight ±0.5% accuracy over temperature and load
- Ultra-low quiescent current ideal for battery-powered and always-on designs
- 100mA output current capability in compact SOT-23-5 package
- Low dropout voltage enables operation with minimal input-output differential
- Built-in current limiting and thermal shutdown for robust protection
Applications
LP2951ACSD-3.3 is widely used in portable consumer electronics, IoT sensors, and wearable devices where a stable 3.3V rail must be derived from a lithium-ion or alkaline battery. Its ultra-low quiescent current makes it ideal for always-on subsystems such as real-time clocks, microcontroller standby circuits, and wireless sensor nodes. The compact SOT-23-5 footprint also suits space-constrained applications including handheld instruments, smart meters, and medical monitoring devices.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output voltage and current of the LP2951ACSD-3.3?
The LP2951ACSD-3.3 provides a fixed 3.3V output voltage with a maximum output current of 100mA. The output accuracy is ±0.5% over the full operating temperature range, making it suitable for precision low-power applications.
What is the typical quiescent current of the LP2951ACSD-3.3?
The LP2951ACSD-3.3 features an ultra-low quiescent current of typically 75µA, which extends battery life significantly in portable and battery-operated designs such as IoT sensors and wearables operating in standby mode.
What package does the LP2951ACSD-3.3 come in?
The LP2951ACSD-3.3 is available in a compact SOT-23-5 surface-mount package, making it ideal for space-constrained PCB designs. The small footprint is well suited for portable consumer electronics and handheld instruments.
What is the minimum input voltage required for the LP2951ACSD-3.3?
The LP2951ACSD-3.3 requires a minimum input voltage of approximately 3.6V to maintain the 3.3V regulated output, given its typical dropout voltage of around 300mV at 100mA load. This low dropout characteristic allows operation directly from a single lithium-ion cell.
Where can I buy the LP2951ACSD-3.3 and what is the price?
The LP2951ACSD-3.3 is available from authorized Texas Instruments distributors and through FindMyChip starting from approximately $1.13 per unit. Worldwide shipping is supported and stock availability can be checked in real time on the product page.
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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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