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onsemi MC33275D-5.0R2
- Part No.:
- MC33275D-5.0R2
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC33275D-5.0R2.pdf
- Description:
- IC REG LINEAR 5V 300MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,764
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Product details
Overview
MC33275D-5.0R2 from onsemi is a fixed-output 5.0 V, 300 mA low-dropout (LDO) linear voltage regulator in SOIC-8 package, featuring 260 mV dropout at full load, ±2% output voltage tolerance over −40°C to +125°C, and internal thermal shutdown and current limiting. It delivers stable power to microcontrollers, sensors, and analog circuitry in battery-powered handheld instruments and industrial control modules.
For engineers reviewing the MC33275D-5.0R2 datasheet, pinout, applications, or equivalent options, key selection criteria include dropout performance at 300 mA, quiescent current under 200 µA, stability with ≤0.22 µF output capacitance, and SOIC-8 thermal resistance (RJA = 160°C/W).
Technical Context
The MC33275D-5.0R2 employs a PNP pass transistor architecture enabling ultra-low dropout-25 mV at 10 mA and 260 mV at 300 mA-while maintaining tight line regulation (≤10 mV) and load regulation (≤25 mV). Its internal reference is trimmed to 1.23 V, and feedback network sets nominal 5.0 V output with 2% total tolerance across temperature and load.
Thermal protection activates at 150°C junction temperature without hysteresis, causing output oscillation until cooling occurs; current limiting caps output at 450 mA typical. The device operates from 5.5 V to 13 V input and remains stable with ceramic, tantalum, or aluminum electrolytic output capacitors ≥0.22 µF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2% (−40°C to +125°C), enabling direct supply for 5 V logic and analog rails without external resistors. |
| Max Output Current | 300 mA continuous, sufficient to power multiple low-power ICs (e.g., MCU + sensor + transceiver) from single LDO. |
| Dropout Voltage | 260 mV at 300 mA, allowing operation from 5.26 V input-critical for extending battery life in 2-cell Li-ion or 4-cell alkaline systems. |
| Quiescent Current | 125–200 µA (typ–max), minimizing standby power loss in always-on monitoring circuits. |
| Line Regulation | ≤10 mV over 6–12 V input range, ensuring stable output despite battery voltage sag or supply ripple. |
| Load Regulation | ≤25 mV from 0–250 mA load step, preserving ADC reference accuracy and sensor signal integrity. |
| Ripple Rejection | ≥65 dB at 120 Hz, suppressing switching noise from upstream DC/DC converters feeding the LDO input. |
Pinout & Package
MC33275D-5.0R2 uses SOIC-8 (Case 751, D suffix), 4.9 mm × 3.9 mm × 1.5 mm body, with exposed pad not electrically connected. Thermal resistance: RJA = 160°C/W, RJC = 25°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Vin) | Input Supply | Accepts 5.5–13 V DC; requires ≥0.33 µF bypass capacitor placed adjacent to pin for transient immunity. |
| 2 (GND) | Ground Reference | Primary ground return for regulator core; must connect to low-impedance system ground plane. |
| 3 (Vout) | Regulated Output | Delivers 5.0 V ±2%; stable with ≥0.22 µF ceramic output capacitor mounted within 5 mm of pin. |
| 4 (GND) | Ground Reference | Second ground terminal-bonded internally to pin 2; improves thermal conduction and reduces ground loop inductance. |
| 5 (N/C) | No Connect | Internally unconnected; must remain floating-no routing or soldering permitted. |
| 6 (N/C) | No Connect | Internally unconnected; must remain floating-no routing or soldering permitted. |
| 7 (GND) | Ground Reference | Third ground terminal-bonded internally to pins 2 and 4; enhances thermal dissipation and EMI suppression. |
| 8 (GND) | Ground Reference | Fourth ground terminal-bonded internally; provides lowest-inductance path for high-frequency ground return. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low Dropout | 25 mV @ 10 mA enables operation from near-regulated input-ideal for post-regulation in multi-rail systems. |
| Low Quiescent Current | 125 µA typ preserves battery capacity in sleep-mode applications such as remote sensors and wearables. |
| Minimal Output Capacitance | Stable with only 0.22 µF ceramic capacitor-reduces BOM count and PCB area vs. traditional LDOs requiring ≥10 µF. |
| Integrated Protection | Current limit (450 mA typ) and thermal shutdown (150°C) eliminate need for external fault-handling circuitry. |
| Pb-Free & AEC-Q100 Capable | RoHS-compliant SOIC-8 package; NCV variant qualified for automotive use-MC33275D-5.0R2 shares same die and process. |
Applications
| Hand-Held Test Equipment | Industrial Sensor Nodes |
|---|---|
|
Use Scenario: Portable multimeter with LCD display, microcontroller, and precision ADC operating from two AA batteries. IC Role / Device Role / Timing Role: Primary 5 V power rail regulator supplying MCU core, analog front-end, and display driver. Use Value: 260 mV dropout extends usable battery life by >15% compared to standard 350 mV LDOs, enabling operation down to 5.26 V input. |
Use Scenario: Wireless temperature/humidity node with LoRaWAN radio, powered by 3.6 V Li-SOCl₂ primary cell with boost converter. IC Role / Device Role / Timing Role: Post-regulator cleaning boosted 5.5 V output to clean, low-noise 5.0 V for sensor excitation and ADC reference. Use Value: 65 dB ripple rejection suppresses boost converter switching noise, improving ADC ENOB by ≥1.5 bits. |
| Medical Vital Sign Monitors | Automotive Body Control Modules |
|
Use Scenario: Battery-backed pulse oximeter with optical sensor, analog signal chain, and Bluetooth LE radio. IC Role / Device Role / Timing Role: Low-noise 5 V supply for op-amp instrumentation amplifiers and photodiode transimpedance stages. Use Value: 160 µVRMS output noise (10 Hz–100 kHz) prevents signal corruption in sub-mV physiological measurements. |
Use Scenario: Dashboard cluster module requiring 5 V for microcontroller, CAN transceiver, and backlight LED driver. IC Role / Device Role / Timing Role: Secondary 5 V regulator fed from vehicle 12 V rail via pre-regulator, supporting AEC-Q100 functional safety requirements. Use Value: Internal thermal shutdown prevents latch-up during sustained overloads-validated per ISO 16750-2 pulse testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCP1117ST50T3G | Higher dropout (1.2 V @ 800 mA), SO-8 package, 1.1 A rating, but 800 µA quiescent current. | Better for high-current, non-battery apps; unsuitable for <100 µA standby systems. | Choose when output current >500 mA required and quiescent current is not critical. |
| MCP1703T-5002E/MB | Lower quiescent current (1.8 µA), SOT-23-5, 250 mA rating, 600 mV dropout @ 250 mA. | Superior for ultra-low-power IoT nodes; limited thermal capability due to small package. | Prefer for coin-cell or energy-harvesting designs where <5 µA IQ is mandatory and current ≤250 mA. |
Compared with NCP1117ST50T3G and MCP1703T-5002E/MB, MC33275D-5.0R2 uniquely balances 300 mA output, 260 mV dropout, and 200 µA max IQ in a thermally robust SOIC-8-making it optimal for mid-power portable industrial and medical devices needing both efficiency and reliability.
Availability
MC33275D-5.0R2 is available at Aetrix Electronics and suitable for battery-powered consumer products, hand-held instruments, and industrial sensor nodes requiring stable component supply with long-term manufacturability and RoHS compliance.
Supply support for MC33275D-5.0R2 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, sensing, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The MC33275 series belongs to onsemi's micropower LDO portfolio, engineered specifically for extended battery life in portable and remote equipment-emphasizing ultra-low dropout, minimal external components, and robust thermal/current protection.
FAQ
What is the minimum input voltage required for MC33275D-5.0R2 to maintain regulation at 300 mA load?
The MC33275D-5.0R2 requires a minimum input voltage of 5.26 V to sustain 5.0 V output at 300 mA, based on its maximum dropout voltage of 260 mV. Below this, output voltage drops linearly with input; operation below 5.26 V is permissible only in dropout mode with reduced output.
Can MC33275D-5.0R2 be used with ceramic output capacitors smaller than 1 µF?
Yes-MC33275D-5.0R2 is stable with as little as 0.22 µF ceramic output capacitance for the 5.0 V version, per datasheet Section 8. This eliminates need for large bulk capacitors and supports compact, cost-effective designs without compromising stability.
Does MC33275D-5.0R2 include reverse polarity or reverse current protection?
No-MC33275D-5.0R2 lacks built-in reverse polarity or reverse current protection. If input can be reversed or if back-driving from output is possible, an external series Schottky diode or ideal diode controller must be added to prevent damage.
How does thermal shutdown behave in MC33275D-5.0R2 under sustained overload?
MC33275D-5.0R2 thermal shutdown activates at ~150°C junction temperature with no hysteresis. Under sustained overload, the output toggles on/off as temperature cycles across threshold-appearing as oscillation. Proper heatsinking or derating is required to avoid this mode.
Is MC33275D-5.0R2 pin-compatible with other regulators in the MC33275 family?
Yes-MC33275D-5.0R2 shares identical SOIC-8 pinout and footprint with all MC33275D-x.xR2 variants (e.g., MC33275D-3.3R2G), enabling drop-in replacement across output voltages without PCB redesign.
MC33275D-5.0R2 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):
- 13V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 200 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MC33275D-5.0R2 FAQ
1.How can I place an order for MC33275D-5.0R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33275D-5.0R2 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 MC33275D-5.0R2 reliable?
The price and inventory of MC33275D-5.0R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33275D-5.0R2 is usually 5 days.
3.What payment methods are accepted for MC33275D-5.0R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33275D-5.0R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33275D-5.0R2?
MC33275D-5.0R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33275D-5.0R2 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 MC33275D-5.0R2?
For technical support, including MC33275D-5.0R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33275D-5.0R2 requirements.
6.How does Aetrix verify that MC33275D-5.0R2 is sourced from the original manufacturer or authorized distributors?
All MC33275D-5.0R2 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 MC33275D-5.0R2 meets industry standards.
7.What is the process for return or replacement of MC33275D-5.0R2?
All MC33275D-5.0R2 units undergo pre-shipment inspection (PSI). If there is an issue with MC33275D-5.0R2, 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 MC33275D-5.0R2 part is unused and in its original packaging.
Return procedure for MC33275D-5.0R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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