LP38691SD-3.3/NOPBIn StockTexas Instruments
LP38691SD-3.3/NOPB is a 150mA low-dropout linear voltage regulator with 3.3V fixed output by Texas Instruments. Key specs: 150mA output current, 300mV dropout voltage, SOT-23-5 package. From $0.72, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline No-lead
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- LP38691SD-3.3/NOPB Datasheet PDF
- Category
- Power Supply
- Price
- From $0.7238(MOQ 129)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 150mA output current with ultra-low 300mV dropout voltage for efficient power conversion
- Fixed 3.3V output ideal for direct powering of microcontrollers and digital logic
- Tiny SOT-23-5 package optimized for space-constrained portable and handheld designs
- Built-in current limiting and thermal shutdown protection for robust circuit reliability
- Wide input voltage range from 3.6V to 6V supporting common supply rails
Applications
The LP38691SD-3.3/NOPB is widely used in portable consumer electronics such as smartphones, tablets, and wearables where compact size and low dropout voltage are critical. It is also well suited for powering microcontrollers, FPGAs, and sensor modules in IoT devices and industrial control systems. Its stable 3.3V output and low quiescent current make it an excellent choice for battery-powered applications requiring extended operating life.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.55V |
| Dropout Voltage1-Nom | 0.25V |
| Input Voltage Absolute-Max | 12V |
| Input Voltage-Max | 10V |
| Input Voltage-Min | 2.7V |
| JESD-30 Code | S-XDSO-N6 |
| JESD-609 Code | e4 |
| Line Regulation-Max | 0.02046% |
| Load Regulation-Max | 0.08234% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.5A |
| Output Voltage1-Max | 3.432V |
| Output Voltage1-Min | 3.168V |
| Output Voltage1-Nom | 3.3V |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | SOLCC6,.13,38 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| 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 | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 4% |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LP38691SD-3.3/NOPB:
Frequently Asked Questions
What is the output voltage and current rating of the LP38691SD-3.3/NOPB?
The LP38691SD-3.3/NOPB provides a fixed 3.3V output voltage with a maximum output current of 150mA. Its low dropout voltage of approximately 300mV at full load ensures efficient regulation even when the input supply is close to the output level.
What package does the LP38691SD-3.3/NOPB use and what are its dimensions?
This regulator comes in a SOT-23-5 (SD) surface-mount package, which is a very compact 5-pin plastic package measuring approximately 2.9mm x 1.6mm. The small footprint makes it ideal for space-constrained PCB designs in portable and handheld electronics.
What are typical applications for the LP38691SD-3.3/NOPB?
The LP38691SD-3.3/NOPB is commonly used to power 3.3V logic circuits including microcontrollers, FPGAs, memory chips, and wireless modules. It suits portable devices, IoT sensors, wearables, and battery-powered systems where low dropout and minimal quiescent current are important requirements.
Does the LP38691SD-3.3/NOPB include protection features?
Yes, the LP38691SD-3.3/NOPB includes built-in current limiting to prevent damage under overload conditions, as well as thermal shutdown protection that automatically disables the device when junction temperature exceeds safe limits, ensuring long-term reliability in demanding environments.
What is the input voltage range supported by the LP38691SD-3.3/NOPB?
The LP38691SD-3.3/NOPB supports an input voltage range from approximately 3.6V to 6V. This range covers common supply rails such as single-cell Li-ion batteries and USB 5V sources, making it versatile for a wide variety of portable and embedded system power supply designs.
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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 |
|---|---|---|
| 129+ | $1.5594 | $201.16 |
| 166+ | $1.5075 | $250.25 |
| 222+ | $1.3515 | $300.03 |
| 5000+ | $0.7378 | $3688.75 |
| 7000+ | $0.7306 | $5114.41 |
| 10000+ | $0.7238 | $7237.70 |
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