SPX1117M3-L-5-0 EXAR Power Supply (SOT223 (3-Pin)) In Stock
EXAR SPX1117M3-L-5-0 is a fixed 5 V, 800 mA low-dropout linear regulator in a 3-pin SOT-223 package. It accepts input voltages from 2.6 V to 15 V and maintains ±1% output accuracy, making it suitable for precision 5 V rail generation in embedded and consumer electronics designs.
- Manufacturer
- EXAR
- Package
- SOT223 (3-Pin)
- Pin Count
- 4
- Lifecycle
- OBSOLETE
- Datasheet
- SPX1117M3-L-5-0 Datasheet PDF
- Category
- Power Supply
- Price
- From $0.1988(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 5 V output with ±1% regulation accuracy across load and temperature
- 800 mA maximum output current with low dropout voltage for efficient linear regulation
- Wide input voltage range: 2.6 V to 15 V accommodates diverse supply rails
- 3-pin SOT-223 package with exposed thermal pad for enhanced heat dissipation on PCB
- Peak reflow temperature of 260°C with matte tin finish for lead-free assembly compatibility
Applications
The SPX1117M3-L-5-0 is widely used to generate a stable 5 V supply rail for microcontrollers, FPGAs, sensors, and USB peripherals in embedded computing and consumer electronics. It is also suitable for industrial control boards requiring a compact, low-noise post-regulation stage downstream of a switching power supply.
Specifications
| YTEOL | 0 |
| JESD-609 Code | e3 |
| Peak Reflow Temperature (Cel) | 260 |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Terminal Finish | MATTE TIN |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | SOT223 (3-Pin) |
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 SPX1117M3-L-5-0:
Frequently Asked Questions
What is the minimum input voltage needed to maintain a regulated 5 V output with SPX1117M3-L-5-0 at full load?
The SPX1117M3-L-5-0 requires an input voltage of at least 2.6 V above the 5 V output at full 800 mA load, so a minimum supply of approximately 6.3 V to 7 V is recommended to ensure the dropout specification is met and the output stays within its ±1% accuracy band.
How does the SOT-223 package help manage thermal dissipation when SPX1117M3-L-5-0 is used at high output current?
The 3-pin SOT-223 package includes a large exposed metal tab that can be soldered directly to a PCB copper pour, providing a thermal path rated for junction-to-board thermal resistance around 22°C/W. At 800 mA output, the power dissipation is (Vin − 5 V) × 0.8 A, so board copper area should be sized accordingly to keep junction temperature below 125°C.
When would a designer choose SPX1117M3-L-5-0 over a switching regulator for a 5 V rail?
SPX1117M3-L-5-0 is preferred over a switching regulator when output ripple below 50 µV RMS and fast transient response are critical, such as in analog sensor conditioning, audio circuits, or RF front-end supplies. The LDO's simplicity also reduces BOM cost since no inductor or large bulk capacitors are needed.
Is SPX1117M3-L-5-0 compatible with lead-free soldering processes used in RoHS-compliant manufacturing?
Yes. SPX1117M3-L-5-0 has a matte tin terminal finish and is rated for peak reflow at 260°C for up to 40 seconds, which is fully compatible with standard lead-free SAC305 solder paste reflow profiles used in RoHS-compliant SMT assembly lines.
Related Guides
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
ADAQ7768-1 Design Guide for Precision Vibration and Dynamic Signal Measurement
Design ADAQ7768-1 precision data acquisition channels for vibration and dynamic sensing with the right bandwidth, reference, clock, and layout choices.
Jun 30, 2026
AD5204BRZ10 Design Guide for SPI-Controlled Gain and Offset Calibration
Design AD5204BRZ10 digital potentiometer calibration loops with bounded trim span, safe wiper current, clean SPI routing, and reliable startup codes.
Jun 30, 2026
Why Buy from FindMyChip
About EXAR
EXAR is a leading electronic component manufacturer. FindMyChip sources EXAR ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
More from EXAR
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.9940 | $0.99 |
| 113+ | $0.2982 | $33.70 |
| 1342+ | $0.1988 | $266.79 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”