LP38692SD-3.3/NOPB Texas Instruments power-management (SOT-223) In Stock
The LP38692SD-3.3/NOPB is a fixed 3.3V, 500mA low-dropout (LDO) voltage regulator from Texas Instruments, housed in a SOT-223 package. It delivers ultra-low dropout voltage (typically 330mV at full load), low quiescent current, and excellent line and load regulation making it ideal for battery-powered, noise-sensitive, and space-constrained embedded designs.
- Manufacturer
- Texas Instruments
- Package
- SOT-223
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Category
- power-management
- Price
- From $0.8184(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 3.3V output voltage with +/-2% accuracy
- 500mA continuous output current capability
- Ultra-low dropout voltage: typically 330mV at 500mA load
- Very low quiescent current: 1mA typical for extended battery life
- Input voltage range: 3.7V to 10V
- Stable with small ceramic output capacitors (1uF minimum)
- Internal current limiting and thermal shutdown protection
- RoHS-compliant, lead-free SOT-223 (TO-261) package
Applications
The LP38692SD-3.3/NOPB is widely used in portable consumer electronics such as smartphones, tablets, and wearables where efficient 3.3V regulation from lithium-ion batteries is essential. It is also suitable for microcontroller and DSP power rails in embedded systems, IoT sensor nodes, and handheld instruments that require a clean, regulated 3.3V supply with minimal self-heating. Industrial control systems and communication modules benefit from its wide operating temperature range and robust protection features.
Specifications
| Pbfree Code | Yes |
| Reach Compliance Code | Compliant |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 1V |
| Dropout Voltage1-Nom | 0.45V |
| Input Voltage Absolute-Max | 12V |
| Input Voltage-Max | 10V |
| Input Voltage-Min | 2.7V |
| JESD-30 Code | S-PDSO-N6 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.164835% |
| Load Regulation-Max | 1% |
| 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 | 3.465V |
| Output Voltage1-Min | 3.135V |
| Output Voltage1-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| 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 | 5% |
| ## LP38692SD-3.3/NOPB Alternates Showing results | Image |
| Package | SOT-223 |
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 LP38692SD-3.3/NOPB:
Same 3.3V LDO family from TI, SOT-223 package, 800mA rated, slightly higher dropout voltage
3.3V fixed LDO, 150mA, SOT-23-5, lower current rating but smaller footprint alternative
suggested
suggested
suggested
Frequently Asked Questions
What is the output voltage of the LP38692SD-3.3/NOPB?
The LP38692SD-3.3/NOPB provides a fixed 3.3V output voltage with ±2% accuracy across the full operating temperature and load range.
What is the minimum input voltage required for stable 3.3V regulation?
The minimum input voltage is determined by the output voltage plus the dropout voltage. At 500mA load the typical dropout is 330mV, so a minimum of approximately 3.63V (3.3V + 0.33V) is needed; TI specifies a 3.7V minimum for design margin.
What output capacitor does the LP38692SD-3.3/NOPB require?
A minimum 1µF output capacitor (ceramic recommended) is required for stability. Larger capacitors improve transient response; the device is unconditionally stable with ceramic, tantalum, or aluminium electrolytic capacitors.
Is the LP38692SD-3.3/NOPB suitable for battery-powered applications?
Yes. Its typical quiescent current of only 1mA and low dropout voltage make it well-suited for lithium-ion or Li-polymer battery-powered designs, minimising power loss and extending battery life.
What protections are built into the LP38692SD-3.3/NOPB?
The device integrates internal current limiting and thermal shutdown protection, automatically reducing output current or shutting off to prevent damage under overload or overtemperature conditions.
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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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