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onsemi MC78L05ABPRM
- Part No.:
- MC78L05ABPRM
- Manufacturer:
- onsemi
- Package:
- TO-226-3, TO-92-3 Long Body, Formed Leads
- Datasheet:
-
MC78L05ABPRM.pdf
- Description:
- IC REG LINEAR 5V 100MA TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,223
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Product details
Overview
MC78L05ABPRM from onsemi is a 100 mA, fixed +5.0 V positive linear voltage regulator in TO-92 package with internal short-circuit current limiting and thermal shutdown. It operates across −40°C to +125°C, delivers ±2% output voltage accuracy at 25°C, and requires no external components for basic regulation in low-power embedded systems, sensor interfaces, and microcontroller supply rails.
For engineers reviewing the MC78L05ABPRM datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage (1.7 V), load regulation (≤30 mV over 1–40 mA), ripple rejection (41–49 dB at 120 Hz), thermal resistance (200°C/W in TO-92), and automotive-grade qualification (NCV variant available).
Technical Context
The MC78L05ABPRM uses a monolithic bipolar design with built-in thermal overload protection and foldback current limiting. Its architecture ensures stable regulation without external compensation capacitors under typical loads, though input bypassing (≥0.33 µF) is recommended for long trace runs or high transient loads.
It maintains regulation with input voltages as low as 7.0 V (VI ≥ VO + 2.0 V minimum), supports up to 100 mA continuous output, and exhibits low quiescent current (3.8–6.0 mA) across temperature. Output noise is specified at 40 µV RMS (10 Hz–100 kHz), and line regulation is ≤150 mV over 7–20 V input range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2% at 25°C - ensures stable logic-level supply for 5 V microcontrollers and peripherals |
| Max Output Current | 100 mA - sufficient for low-power MCU cores, sensors, and I/O buffers without heatsinking |
| Dropout Voltage | 1.7 V typical - allows operation from 7 V input while maintaining 5 V output under full load |
| Ripple Rejection | 41–49 dB at 120 Hz - suppresses AC ripple from unregulated wall adapters or DC/DC pre-regulators |
| Thermal Resistance | 200°C/W (Junction-to-Ambient, TO-92) - limits max power dissipation to 625 mW at 25°C ambient |
| Operating Temp | −40°C to +125°C - qualified for industrial and automotive under-hood environments |
| Quiescent Current | 3.8–6.0 mA - enables predictable bias consumption in battery-backed or always-on circuits |
Pinout & Package
MC78L05ABPRM is housed in a Pb-free TO-92 package (Case 029), with leads formed for tape-and-reel automated assembly. The package has three terminals: Pin 1 = Output, Pin 2 = Ground, Pin 3 = Input.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Output) | Regulated 5.0 V supply rail | Delivers stable voltage to load; must be decoupled locally with 0.1 µF ceramic capacitor |
| 2 (Ground) | Common reference node | Shared return path for input and output; requires low-impedance PCB connection to minimize ground bounce |
| 3 (Input) | Unregulated DC input | Accepts 7–30 V DC; requires ≥0.33 µF bypass capacitor near pin for stability under dynamic loads |
Key Features
| Feature | Design Value |
|---|---|
| Internal Short-Circuit Protection | Automatically limits output current during fault conditions, preventing damage without external fusing |
| Thermal Shutdown | Disables output when junction temperature exceeds ~150°C, enabling safe recovery after cooling |
| No External Components Required | Operates stably with only input/output bypass caps-reduces BOM count and layout area |
| Pb-Free TO-92 Packaging | Complies with RoHS; compatible with standard through-hole reflow and wave soldering processes |
| AEC-Q100 Qualified Variant Available | NCV78L05A version meets automotive stress testing requirements for under-hood use |
Applications
| Industrial Sensor Node | Automotive Body Control Module |
|---|---|
Use Scenario: Powering analog temperature/humidity sensors and low-speed UART transceivers in factory-floor wireless nodes. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying MCU core, ADC reference, and signal conditioning circuitry. Use Value: Stable 5 V rail ensures <±0.5% ADC reference accuracy and eliminates need for external voltage trimming. | Use Scenario: Regulating 5 V supply for door lock actuators, interior lighting drivers, and CAN transceiver logic in 12 V vehicle systems. IC Role / Device Role / Timing Role: Secondary post-regulator downstream of buck converter, providing clean logic voltage for microcontroller peripherals. Use Value: 49 dB ripple rejection suppresses switching noise from upstream DC/DC, reducing EMI-induced communication errors. |
| Medical Portable Monitor | Consumer IoT Hub |
Use Scenario: Supplying 5 V to low-power ARM Cortex-M0+ MCU and OLED display controller in battery-operated vital sign monitors. IC Role / Device Role / Timing Role: Main system regulator converting boosted battery voltage (7–9 V) to precise 5 V logic rail. Use Value: −40°C to +125°C rating supports operation in cold storage or warm clinical environments without derating. | Use Scenario: Providing regulated 5 V to Wi-Fi SoC, USB interface ICs, and LED status indicators in smart home hubs. IC Role / Device Role / Timing Role: Local point-of-load regulator isolating noise-sensitive RF sections from noisy digital supplies. Use Value: 40 µV RMS output noise prevents spurious clock jitter in 2.4 GHz RF synthesizers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM78L05ACZ | Same 5 V output, but rated for 0°C to +70°C only; higher quiescent current (5.5 mA typ) | Limited to commercial-grade indoor electronics; not suitable for automotive or extended-temp industrial use | Select when cost sensitivity outweighs temperature range and automotive compliance needs |
| NCV78L05ABPRAG | Identical electrical specs and TO-92 package; AEC-Q100 qualified, −40°C to +125°C guaranteed | Designed for automotive body electronics requiring PPAP documentation and zero-defect reliability | Choose for automotive OEM or Tier-1 designs where qualification and traceability are mandatory |
Compared with LM78L05ACZ, MC78L05ABPRM offers wider temperature range and lower quiescent current; compared with NCV78L05ABPRAG, it lacks AEC-Q100 certification but shares identical performance and footprint-making it ideal for industrial applications needing extended temp support without automotive overhead.
Availability
MC78L05ABPRM is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body control modules, and portable medical monitors requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for MC78L05ABPRM includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
onsemi (formerly ON Semiconductor) is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The MC78L00A series was designed as a cost-effective, rugged fixed-output linear regulator family targeting low-current power management in space-constrained and thermally demanding environments.
FAQ
What is the maximum input voltage for MC78L05ABPRM?
The absolute maximum input voltage for MC78L05ABPRM is 30 V DC for 5 V output variants. However, for reliable operation within thermal limits and dropout margin, the recommended maximum is 20 V. Exceeding 30 V risks permanent damage due to internal junction breakdown, as confirmed in the Absolute Maximum Ratings table of the official datasheet.
Does MC78L05ABPRM require input and output capacitors?
MC78L05ABPRM does not require external capacitors for basic stability, but input bypassing (≥0.33 µF tantalum or ceramic) is strongly recommended when traces exceed 2 inches or load transients exceed 10 mA/µs. An output capacitor (≥0.1 µF ceramic) improves transient response and reduces output noise-both values are validated in Figure 2 and Applications Information section of the MC78L00A datasheet.
Is MC78L05ABPRM pin-compatible with older 78L05 variants?
Yes, MC78L05ABPRM uses the standard TO-92 pinout: Pin 1 = Output, Pin 2 = Ground, Pin 3 = Input-identical to legacy 78L05 devices including LM78L05 and UA78L05. This allows direct replacement in existing designs without PCB modification, provided thermal and voltage margin requirements are verified per the updated datasheet.
What is the dropout voltage specification for MC78L05ABPRM?
The dropout voltage for MC78L05ABPRM is specified as 1.7 V typical at TJ = +25°C and IO = 40 mA. This means the input must remain ≥6.7 V to sustain 5.0 V output under that load. Dropout increases slightly with temperature and current-Figure 3 in the datasheet shows it remains ≤2.0 V up to 100 mA and 125°C junction temperature.
Can MC78L05ABPRM be used in automotive applications?
MC78L05ABPRM itself is not AEC-Q100 qualified, but its automotive-grade counterpart NCV78L05ABPRAG shares identical electrical specs, TO-92 package, and pinout. For production automotive use, NCV78L05ABPRAG is required to meet PPAP and stress-test requirements; MC78L05ABPRM is suitable for prototyping, industrial, or non-safety-critical automotive subsystems where qualification is not mandated.
MC78L05ABPRM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 Long Body, Formed Leads
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 30V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 6 mA
- Current - Supply (Max):
- -
- PSRR:
- 49dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92 (TO-226)
MC78L05ABPRM FAQ
1.How can I place an order for MC78L05ABPRM through Aetrix?
Please submit a Request for Quotation (RFQ) for MC78L05ABPRM on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC78L05ABPRM reliable?
The price and inventory of MC78L05ABPRM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC78L05ABPRM is usually 5 days.
3.What payment methods are accepted for MC78L05ABPRM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC78L05ABPRM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC78L05ABPRM?
MC78L05ABPRM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC78L05ABPRM order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC78L05ABPRM?
For technical support, including MC78L05ABPRM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC78L05ABPRM requirements.
6.How does Aetrix verify that MC78L05ABPRM is sourced from the original manufacturer or authorized distributors?
All MC78L05ABPRM products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC78L05ABPRM meets industry standards.
7.What is the process for return or replacement of MC78L05ABPRM?
All MC78L05ABPRM units undergo pre-shipment inspection (PSI). If there is an issue with MC78L05ABPRM, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC78L05ABPRM part is unused and in its original packaging.
Return procedure for MC78L05ABPRM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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