L78L33ABUTR
Brand: ST
L78L33ABUTR is a linear voltage regulator from STMicroelectronics, designed for drone power distribution boards, BEC circuits, and battery voltage regulation. Superb Automation supplies genuine L78L33ABUTR with full traceability, competitive pricing, and fast global delivery — supporting prototype to production volumes for drone, robotics, and industrial customers worldwide.
Product Specifications
L78L33ABUTR — Voltage Regulator by STMicroelectronics
The L78L33ABUTR is an STMicroelectronics voltage regulator in SOT-89(SOT-89-3) for reliable power management in embedded and industrial applications.
Part Number Decoded — Field by Field
| Field | Value | Meaning |
|---|---|---|
| L78L33ABUTR | Full Part Number | STMicroelectronics Voltage Regulator |
Quick Specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Part Number | L78L33ABUTR |
| Package | SOT-89(SOT-89-3) |
| Type | Fixed/Adjustable Voltage Regulator |
| Qualification | Industrial (-40°C to +125°C) |
Product Overview
The L78L33ABUTR is an STMicroelectronics voltage regulator in SOT-89(SOT-89-3) package, providing reliable, stable output voltage for embedded systems, IoT devices, and industrial applications.
Key Features & Benefits
Stable Output with Built-in Protection
Features internal thermal shutdown, current limiting, and safe operating area (SOA) protection — ensuring reliable output regulation even under fault conditions, short circuits, and high ambient temperatures typical in enclosed electronics.
Wide Compatibility & Minimal External Components
Requires only input and output capacitors for stable operation, minimizing BOM count and PCB area. Compatible with ceramic, tantalum, and electrolytic output capacitors for design flexibility.
Industrial Temperature Range
Rated for −40°C to +125°C junction temperature, suitable for outdoor drone applications, automotive under-hood electronics, and industrial control systems exposed to wide thermal swings.
Target Applications
Drone & Embedded System Power Rails
Provides regulated voltage for MCU core/IO supplies, sensor analog references, and communication module power in drone flight controllers, IoT nodes, and portable electronics.
Industrial & Automotive Electronics
Widely used in PLCs, sensor transmitters, motor control boards, and automotive ECUs where a robust, well-protected voltage regulator is essential for system reliability.
General-Purpose Point-of-Load Regulation
Serves as a simple, cost-effective point-of-load regulator for powering individual ICs, analog circuits, and mixed-signal subsystems from higher-voltage system rails.
Frequently Asked Questions
What is the output voltage of the L78L33ABUTR?
Check the specific variant. The L78L33ABUTR is available in multiple fixed output voltages (typically 3.3V, 5V, 12V) or as an adjustable version. Refer to the datasheet for exact specifications.
What capacitors are needed for stability?
Typically 0.33µF on input and 0.1µF on output minimum. For optimal transient response, 10µF output capacitance is recommended. Refer to the datasheet for ESR stability requirements if using ceramic capacitors.
What is the minimum order quantity (MOQ)?
Contact SUPERB Automation for a tailored quote. We support quantities from prototype to full production volumes with competitive lead times.
Request a Quote
SUPERB Automation supplies genuine STMicroelectronics L78L33ABUTR with full traceability. Contact us with your target quantity — we'll respond with a quotation within 24 hours.