LP38690DT-1.8 Texas Instruments Integrated Circuit (Other) In Stock
LP38690DT-1.8 is a fixed 1.8V LDO linear voltage regulator in TO-252 package. Features 0.95V typical dropout, 2.7V–10V input range, and up to 1A output. From $0.67, in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 4
- Lifecycle
- OBSOLETE
- Datasheet
- LP38690DT-1.8 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6696(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 1.8V regulated output with tight accuracy, ideal for powering digital logic and MCU cores
- Low 0.95V typical dropout voltage enables efficient operation from Li-ion and low-supply rails
- Wide 2.7V to 10V input voltage range supports diverse power supply designs
- TO-252 (DPAK) surface-mount package with excellent thermal dissipation for compact board layouts
- Up to 1A output current capacity suits a broad range of embedded and portable applications
Applications
The LP38690DT-1.8 is well-suited for powering microcontroller cores, FPGAs, and DSP I/O rails in embedded systems requiring a stable 1.8V supply. Its low dropout voltage makes it an excellent fit for battery-powered portable devices such as handheld instruments and IoT nodes where supply headroom is limited. It is also widely used in telecommunications equipment and industrial control boards that demand reliable, low-noise voltage regulation.
Specifications
| Pbfree Code | No |
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 1.6V |
| Dropout Voltage1-Nom | 0.95V |
| Input Voltage Absolute-Max | 12V |
| Input Voltage-Max | 10V |
| Input Voltage-Min | 2.7V |
| JESD-30 Code | R-PSSO-G2 |
| JESD-609 Code | e0 |
| Line Regulation-Max | 0.01386% |
| Load Regulation-Max | 0.0899% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 1A |
| Output Voltage1-Max | 1.89V |
| Output Voltage1-Min | 1.71V |
| Output Voltage1-Nom | 1.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SMSIP3H,.38,90TB |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | RAIL |
| Peak Reflow Temperature (Cel) | 235 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | TIN LEAD |
| Terminal Form | GULL WING |
| Terminal Pitch | 2.285mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 20 |
| Voltage Tolerance-Max | 5% |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LP38690DT-1.8:
Frequently Asked Questions
What is the output voltage and dropout voltage of the LP38690DT-1.8?
The LP38690DT-1.8 provides a fixed 1.8V regulated output. Its typical dropout voltage is 0.95V and the maximum specified dropout voltage is 1.6V, allowing reliable regulation from input supplies as low as 2.7V.
What is the input voltage range for the LP38690DT-1.8?
The LP38690DT-1.8 accepts an input voltage between 2.7V and 10V for normal operation, with an absolute maximum rating of 12V. This wide range makes it compatible with a variety of power sources including Li-ion batteries and standard 5V or 9V rails.
What package does the LP38690DT-1.8 use and how does it benefit thermal performance?
The LP38690DT-1.8 comes in a TO-252 (DPAK) 3-pin surface-mount package. The exposed pad on this package provides low thermal resistance to the PCB, enabling efficient heat dissipation and supporting higher output currents in compact designs.
What are typical applications for the LP38690DT-1.8?
Typical applications include powering microcontroller cores, FPGAs, memory modules, and other digital logic that require a stable 1.8V supply. It is also used in battery-powered IoT devices, portable instruments, and industrial control boards.
Is the LP38690DT-1.8 RoHS compliant?
According to TI's product data, the LP38690DT-1.8 carries a Pbfree Code of 'No', indicating it uses a traditional tin-lead finish. Buyers in RoHS-regulated markets should verify compliance requirements or consider a Pb-free alternative from the LP38690 family.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.2500 | $2.25 |
| 3+ | $1.8000 | $5.40 |
| 12+ | $1.3500 | $16.20 |
| 450+ | $0.8605 | $387.24 |
| 10000+ | $0.7992 | $7992.00 |
| 100000+ | $0.6696 | $66960.00 |
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