LP3872ET-1.8 Texas Instruments Integrated Circuit (Other) In Stock
LP3872ET-1.8 is a 1.5A fixed 1.8V LDO linear regulator IC from Texas Instruments. Features 380mV typical dropout voltage, 7V max input, and excellent line/load regulation. Ideal for portable electronics, battery-powered devices, and low-noise power supply applications worldwide.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 3
- Lifecycle
- OBSOLETE
- Datasheet
- LP3872ET-1.8 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1.5A high-current LDO with only 380mV typical dropout voltage at full load
- Fixed 1.8V output with ultra-low line regulation of 0.00108% for stable power delivery
- Wide input voltage range of 2.5V to 7V supports diverse power supply designs
- Excellent load regulation of 0.00216% ensures consistent output under varying load conditions
- Compact 5-pin package suitable for space-constrained portable and battery-powered applications
Applications
The LP3872ET-1.8 is well-suited for portable consumer electronics such as smartphones, tablets, and wearables where low dropout voltage maximizes battery life. It is also widely used in IoT sensor nodes and wireless communication modules that require a stable 1.8V supply with low noise. Additionally, the device serves industrial handheld instruments and microcontroller-based systems that demand reliable, high-current LDO regulation within a compact footprint.
Specifications
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.55V |
| Dropout Voltage1-Nom | 0.38V |
| Input Voltage-Max | 7V |
| Input Voltage-Min | 2.5V |
| JESD-30 Code | R-XZFM-T5 |
| Line Regulation-Max | 0.00108% |
| Load Regulation-Max | 0.00216% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 1.5A |
| Output Voltage1-Max | 1.854V |
| Output Voltage1-Min | 1.746V |
| Output Voltage1-Nom | 1.8V |
| Package Body Material | UNSPECIFIED |
| Package Shape | RECTANGULAR |
| Package Style | FLANGE MOUNT |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | NO |
| Technology | CMOS |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 1.702mm |
| Terminal Position | ZIG-ZAG |
| Voltage Tolerance-Max | 3% |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output voltage and maximum output current of the LP3872ET-1.8?
The LP3872ET-1.8 provides a fixed 1.8V output voltage and supports a maximum output current of 1.5A. The typical dropout voltage at full load is 380mV, with a maximum of 550mV, making it suitable for low-voltage, high-current applications.
What is the input voltage range supported by the LP3872ET-1.8?
The LP3872ET-1.8 accepts an input voltage ranging from 2.5V minimum to 7V maximum. This wide input range allows it to be powered directly from single-cell Li-ion batteries or regulated 5V rails in a variety of system designs.
What are the typical applications for the LP3872ET-1.8 LDO regulator?
This device is commonly used in battery-powered portable electronics, IoT devices, microcontroller power supplies, RF transceivers, and DSP/FPGA core voltage rails where a stable 1.8V supply with low dropout and minimal noise is required.
What package does the LP3872ET-1.8 come in, and are there alternative pin-compatible options?
The LP3872ET-1.8 is offered in a 5-pin SOT-23 style package (JESD-30 code R-XZFM-T5), which is compact and board-space-efficient. Texas Instruments offers other members in the LP3872 family with different fixed output voltages for pin-compatible substitution.
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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.
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