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onsemi MC33269DR2-5.0
- Part No.:
- MC33269DR2-5.0
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC33269DR2-5.0.pdf
- Description:
- IC REG LINEAR 5V 800MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,968
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Product details
Overview
MC33269DR2-5.0 from onsemi is a fixed-output, low-dropout linear voltage regulator delivering 5.0 V at up to 800 mA with 1.0 V dropout at 500 mA, ±1.0% output tolerance, and integrated thermal/short-circuit protection. It operates across −40°C to +125°C and targets power-sensitive embedded systems requiring stable 5 V rail generation from low-input-voltage sources.
For engineers reviewing the MC33269DR2-5.0 datasheet, pinout, applications, or equivalent options, this page delivers verified specifications, SO-8 package details, real-world use cases, and validated alternative parts for automotive, industrial, and consumer power management designs.
Technical Context
The MC33269DR2-5.0 uses a composite PNP–NPN pass transistor architecture enabling 1.0 V dropout while maintaining regulation under load currents up to 800 mA. Its internal reference is trimmed to 1.25 V with ±1.0% output accuracy over line, load, and temperature (−40°C to +125°C).
It integrates current limiting and thermal shutdown without external components, requires only a 10 µF output capacitor for stability, and supports input voltages up to 20 V. Ripple rejection is 55 dB at 120 Hz, and quiescent current is 8.0 mA at 5 V output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±1.0% at 10 mA, 4.90–5.10 V over full load/temperature range |
| Dropout Voltage | 1.0 V typical at 500 mA; 1.25 V max at 800 mA - enables operation with Vin as low as 6.25 V |
| Max Output Current | 800 mA continuous - sufficient for microcontroller cores, sensors, and logic rails |
| Ripple Rejection | 55 dB at 120 Hz - suppresses AC ripple from unregulated DC/DC or rectified supplies |
| Thermal Shutdown | Activates at ~170°C junction temperature - protects against sustained overload or poor heatsinking |
| Quiescent Current | 8.0 mA at 5 V output - balances low-noise regulation with standby power efficiency |
| Input Voltage Range | Up to 20 V - accommodates 12 V nominal inputs with margin for transients |
Pinout & Package
MC33269DR2-5.0 is housed in an SO-8 (Case 751) surface-mount package with exposed pad thermal enhancement. Pin 2 (Vout) connects internally to the heatsink surface (terminal 4 per case outline), enabling direct PCB copper pour attachment for improved thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND / Adj | Ground reference for fixed-output version; unused (tied to GND) - not adjustable |
| 2 | Vout | Regulated 5.0 V output; electrically connected to heatsink surface for thermal conduction |
| 3 | Vin | Unregulated input supply; must be ≥6.25 V for full 800 mA operation due to dropout |
| 4–8 | NC / Exposed Pad | No-connect pins; exposed pad (terminal 4) is thermally tied to Pin 2 - must be soldered to large copper area |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Architecture | 1.0 V typical dropout enables efficient 5 V regulation from 6–12 V inputs, reducing heat dissipation vs. standard linear regulators |
| ±1.0% Output Tolerance | Tight initial accuracy ensures reliable operation of 5 V-tolerant peripherals without post-regulation trimming |
| Integrated Protection | Current limit (800 mA) and thermal shutdown prevent damage during fault conditions - no external circuitry required |
| Pb-Free SO-8 Package | RoHS-compliant D suffix package with 2500-unit tape-and-reel shipping - compatible with standard SMT reflow profiles |
| Wide Temperature Range | Specified from −40°C to +125°C ambient - suitable for under-hood automotive and industrial environments |
Applications
| Automotive Body Control Module | Industrial PLC I/O Power Rail |
|---|---|
Use Scenario: Supplies 5 V to microcontroller, CAN transceiver, and sensor interface circuitry in door module or lighting control unit. IC Role / Device Role / Timing Role: Primary 5 V LDO regulator providing clean, stable power independent of battery voltage fluctuations (9–16 V). Use Value: 1.0 V dropout allows regulation down to 6 V battery - maintains operation during cold-crank events without brownout. |
Use Scenario: Powers digital isolators, ADC front-ends, and optocoupler drivers in modular I/O expansion cards. IC Role / Device Role / Timing Role: Local point-of-load regulator converting 12 V backplane supply to noise-sensitive 5 V logic rail. Use Value: 55 dB ripple rejection suppresses switching noise from upstream DC/DC converters, ensuring ADC accuracy. |
| Consumer Set-Top Box USB Hub | Medical Patient Monitor Sensor Interface |
Use Scenario: Provides regulated 5 V to downstream USB 2.0 ports and HDMI CEC circuitry in media gateway devices. IC Role / Device Role / Timing Role: Secondary LDO after primary 12 V DC/DC, decoupling USB load transients from main system rail. Use Value: 800 mA output supports three high-power USB peripherals simultaneously without voltage sag. |
Use Scenario: Powers analog front-end ICs and low-noise op-amps in ECG/SpO₂ signal conditioning paths. IC Role / Device Role / Timing Role: Ultra-stable 5 V bias source for precision instrumentation amplifiers and reference buffers. Use Value: ±1.0% output tolerance and low thermal drift ensure consistent gain calibration across operating temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1117-50CDR | 3.0 V dropout min; 800 mA output; SO-8; 1% tolerance; 55 dB RR at 120 Hz | Higher dropout limits usable input range; lower thermal resistance (65°C/W) improves power handling | Prefer when board space allows larger copper area and input voltage ≥8 V is guaranteed |
| NCV33269DT-5.0G | Same core design; DPAK-3 package; AEC-Q100 qualified; identical electrical specs | Designed for automotive under-hood use; requires different thermal layout (DPAK heatsink pad) | Select for automotive production where PPAP compliance and extended temperature validation are mandatory |
Compared with TLV1117-50CDR, MC33269DR2-5.0 offers lower dropout for marginal input conditions; compared with NCV33269DT-5.0G, it trades automotive qualification for cost-effective SO-8 packaging in non-automotive industrial designs.
Availability
MC33269DR2-5.0 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC power rails, and medical sensor interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MC33269DR2-5.0 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 specializing in energy-efficient power management, analog, and sensing solutions for automotive, industrial, and cloud infrastructure markets.
The MC33269 series was engineered for low-input-voltage, medium-current linear regulation in space-constrained applications - prioritizing dropout voltage, thermal robustness, and automotive-grade reliability.
FAQ
What is the minimum input voltage required for MC33269DR2-5.0 to deliver full 800 mA output?
The MC33269DR2-5.0 requires a minimum input voltage of 6.25 V to sustain 800 mA output, based on its maximum dropout voltage of 1.25 V at that load. Below this, current limit or thermal shutdown may activate. The device remains functional down to 5.0 V input but cannot maintain regulation or full current capability.
Does MC33269DR2-5.0 require an input bypass capacitor?
While not mandatory for stability, MC33269DR2-5.0 benefits from a 0.33 µF or larger low-ESR input capacitor placed directly across Vin and GND. This improves transient response and reduces sensitivity to high-frequency input impedance - especially critical when using long traces or shared supply rails.
Can MC33269DR2-5.0 be used in adjustable-output configurations?
No. MC33269DR2-5.0 is a fixed 5.0 V output variant. The "DR2" suffix denotes SO-8 packaging and the "-5.0" suffix confirms factory-trimmed 5 V output. Adjustable versions (e.g., MC33269DR2G) use separate part numbers and require external resistors on the Adj pin.
What thermal considerations apply to MC33269DR2-5.0 in SO-8 package?
MC33269DR2-5.0's SO-8 package has a junction-to-ambient thermal resistance of 160°C/W (free air) but drops to ~90°C/W with 25 mm² 2-oz copper pad. For 800 mA at 5 V output with 12 V input, power dissipation reaches ~5.6 W - requiring substantial copper area or forced airflow to keep junction temperature below 150°C.
Is MC33269DR2-5.0 compliant with automotive qualification standards?
MC33269DR2-5.0 is not AEC-Q100 qualified. For automotive applications, use the NCV33269DT-5.0G (DPAK) or NCV33269DR2G (SO-8) variants, which carry the NCV prefix, undergo automotive-specific testing, and support PPAP documentation - all while sharing identical electrical characteristics with MC33269DR2-5.0.
MC33269DR2-5.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.35V @ 800mA
- Current - Output:
- 800mA
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- 55dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MC33269DR2-5.0 FAQ
1.How can I place an order for MC33269DR2-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33269DR2-5.0 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 MC33269DR2-5.0 reliable?
The price and inventory of MC33269DR2-5.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33269DR2-5.0 is usually 5 days.
3.What payment methods are accepted for MC33269DR2-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33269DR2-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33269DR2-5.0?
MC33269DR2-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33269DR2-5.0 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 MC33269DR2-5.0?
For technical support, including MC33269DR2-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33269DR2-5.0 requirements.
6.How does Aetrix verify that MC33269DR2-5.0 is sourced from the original manufacturer or authorized distributors?
All MC33269DR2-5.0 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 MC33269DR2-5.0 meets industry standards.
7.What is the process for return or replacement of MC33269DR2-5.0?
All MC33269DR2-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with MC33269DR2-5.0, 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 MC33269DR2-5.0 part is unused and in its original packaging.
Return procedure for MC33269DR2-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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