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onsemi MC33375D-3.0R2
- Part No.:
- MC33375D-3.0R2
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC33375D-3.0R2.pdf
- Description:
- IC REG LINEAR 3V 300MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,490
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Product details
Overview
MC33375D-3.0R2 from onsemi is a 3.0 V fixed-output, 300 mA micropower low-dropout linear voltage regulator in SOIC-8 (Case 751) package, featuring logic-level ON/OFF control, 260 mV dropout at 300 mA, ±2% output tolerance over −40 °C to +125 °C, and internal thermal/current limiting - designed for battery-powered industrial and automotive systems requiring extended runtime.
For engineers reviewing the MC33375D-3.0R2 datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at full load, quiescent current in ON/OFF modes, stability with minimal 0.33 µF output capacitance, and AEC-Q100-compatibility of automotive-grade variants.
Technical Context
The MC33375D-3.0R2 uses a PNP pass transistor architecture enabling ultra-low dropout (25 mV at 10 mA; 260 mV at 300 mA) and micropower operation (125 µA quiescent current in ON mode, 0.3 µA in OFF mode). Its internal reference is trimmed to 1.23 V, and regulation is maintained across input voltages from 3.05 V to 13 V.
Thermal shutdown activates at 150 °C with no hysteresis, causing output oscillation until junction cooling occurs; current limit is fixed at 450 mA. The ON/OFF pin accepts TTL/CMOS-compatible logic levels (VCTRL ≥ 2.4 V for ON, ≤ 0.5 V for OFF), and the device remains stable with ceramic, tantalum, or aluminum electrolytic output capacitors ≥ 0.33 µF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.00 V ±2% (−40 °C to +125 °C), ensuring stable rail for 3.3 V I/O-tolerant microcontrollers and sensors |
| Max Output Current | 300 mA continuous, supporting moderate-power peripherals without external boost circuitry |
| Dropout Voltage | 260 mV at 300 mA, enabling operation from single-cell Li-ion (3.0 V min) or 3.3 V supply rails with margin |
| Quiescent Current | 125 µA (ON), 0.3 µA (OFF), extending battery life in sleep-mode IoT endpoints and automotive body controllers |
| Line/Load Regulation | ≤10 mV line change (Vin = VO+1 V to 12 V), ≤25 mV load change (0–250 mA), minimizing voltage drift under dynamic loads |
| Ripple Rejection | ≥65 dB at 120 Hz, suppressing noise from switching power supplies upstream of analog subsystems |
| Thermal Shutdown | 150 °C junction threshold, protecting against sustained overload or poor PCB heatsinking in enclosed enclosures |
Pinout & Package
MC33375D-3.0R2 is housed in an SOIC-8 NB (Case 751) package with exposed pad for thermal enhancement. Pin 1 is located at the top-left corner adjacent to the index mark.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input supply connection; must be bypassed with ≥0.33 µF capacitor near pin for transient stability |
| 2 | GND | Analog ground reference; connects to system ground plane with low-inductance path to minimize noise coupling |
| 3 | VOUT | Regulated 3.0 V output; requires ≥0.33 µF output capacitor mounted directly at pin for stability |
| 4 | GND | Second ground terminal; internally tied to Pin 2, used for enhanced thermal conduction and noise isolation |
| 5 | GND | Third ground terminal; provides additional low-impedance return path for high-frequency currents |
| 6 | ON/OFF | Active-low enable control; pulled high (≥2.4 V) for regulation, ≤0.5 V to disable output and reduce IQ to 0.3 µA |
| 7 | GND | Fourth ground terminal; improves thermal dissipation and reduces ground bounce in multi-GND layout |
| 8 | VIN | Secondary input connection; internally tied to Pin 1, used for improved current sharing and thermal distribution |
Key Features
| Feature | Design Value |
|---|---|
| Logic-Level ON/OFF Control | Direct interface with MCU GPIOs without level-shifting; enables system-level power sequencing and deep-sleep management |
| Stable with 0.33 µF Output Cap | Eliminates need for large bulk capacitors; supports compact designs in space-constrained automotive modules and wearables |
| Internal Thermal & Current Limiting | Self-protecting operation under short-circuit or overtemperature conditions; no external foldback circuitry required |
| Low Dropout at Full Load | 260 mV @ 300 mA allows use with input rails as low as 3.26 V - critical for brownout resilience in 3.3 V systems |
| Pb-Free & AEC-Q100 Qualified Variant | NCV33375D-3.0R2G meets automotive reliability standards; MC33375D-3.0R2G targets industrial applications |
Applications
| Automotive Body Control Module | Industrial Sensor Node |
|---|---|
Use Scenario: Powering CAN transceiver, EEPROM, and temperature/humidity sensor in door module with 12 V battery input. IC Role / Device Role / Timing Role: Primary 3.0 V LDO supplying regulated rail to mixed-signal ICs; ON/OFF pin synchronized with vehicle ignition state. Use Value: 0.3 µA shutdown current prevents battery drain during vehicle off-state; 260 mV dropout ensures operation down to 9 V cranking voltage. |
Use Scenario: Battery-powered wireless vibration sensor node operating in remote factory environments. IC Role / Device Role / Timing Role: Main power regulator for ultra-low-power MCU and MEMS accelerometer; enabled only during sampling bursts. Use Value: 125 µA ON-mode IQ minimizes active power draw; 0.33 µF output cap enables PCB area reduction vs. legacy LDOs requiring ≥10 µF. |
| Medical Portable Monitor | Smart Energy Meter |
Use Scenario: Regulating 3.0 V rail for ECG front-end amplifier and OLED display driver in handheld diagnostic device. IC Role / Device Role / Timing Role: Low-noise voltage source decoupled from noisy digital supply; ripple rejection >65 dB suppresses switching artifacts. Use Value: Output noise <160 µVrms (10 Hz–100 kHz) preserves signal integrity in analog measurement path. |
Use Scenario: Providing stable 3.0 V supply to metrology ADC and real-time clock in DIN-rail energy meter with wide ambient range. IC Role / Device Role / Timing Role: High-temperature-stable regulator operating continuously across −40 °C to +85 °C ambient. Use Value: ±2% output tolerance maintained over full temperature range ensures consistent ADC reference accuracy without calibration drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCP1117ST30T3G | Fixed 3.0 V, 1 A output, higher IQ (6 mA ON), TO-220/SOT-223 only, no ON/OFF pin | Suitable for higher-current, non-battery applications where enable control is unnecessary | Select when >300 mA load or TO-220 heatsink compatibility is required; avoid for micropower or logic-controlled systems |
| MCP1700T-3002E/MB | 3.0 V, 250 mA, 1.6 µA IQ (ON), SOT-23-5, no thermal shutdown, ±0.4% initial accuracy | Better for ultra-low-IQ always-on monitoring circuits but lacks current/thermal protection | Prefer for sub-250 mA, always-active sensor biasing; reject if short-circuit robustness or 300 mA capability is mandatory |
Compared with NCP1117ST30T3G and MCP1700T-3002E/MB, the MC33375D-3.0R2 uniquely balances 300 mA drive, 0.3 µA shutdown IQ, integrated ON/OFF control, and full thermal/current protection - making it optimal for automotive and industrial battery-backed systems demanding both efficiency and fault resilience.
Availability
MC33375D-3.0R2 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, portable medical devices, and smart energy meters requiring stable component supply with long-term lifecycle support.
Supply support for MC33375D-3.0R2 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 delivering energy-efficient, high-performance silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The MC33375 series was engineered specifically for battery-powered systems needing micropower operation, low dropout, and robust protection - targeting automotive body electronics, industrial controls, and portable instrumentation where reliability and efficiency are critical.
FAQ
What is the maximum input voltage rating for MC33375D-3.0R2?
The MC33375D-3.0R2 has an absolute maximum input voltage of 13 V DC. Operation above this level risks permanent damage. For reliable long-term use, design with Vin ≤ 12 V, especially under high-temperature conditions where thermal stress compounds electrical overstress.
Does MC33375D-3.0R2 require an external pull-up resistor on the ON/OFF pin?
Yes - the ON/OFF pin of MC33375D-3.0R2 must not be left floating. A pull-up resistor (typically 10–100 kΩ) to VIN or a logic-high supply is required to ensure reliable turn-on. Pulling the pin below 0.5 V disables regulation and reduces quiescent current to 0.3 µA.
Can MC33375D-3.0R2 operate stably with a 0.22 µF output capacitor?
No - MC33375D-3.0R2 requires ≥0.33 µF output capacitance for guaranteed stability per the datasheet. While 0.22 µF may work in some cases, it falls outside the validated range and risks oscillation, especially under load transients or temperature extremes. Always use ≥0.33 µF ceramic or tantalum.
Is MC33375D-3.0R2 pin-compatible with NCV33375D-3.0R2G?
Yes - MC33375D-3.0R2 and NCV33375D-3.0R2G share identical SOIC-8 pinout, electrical specifications, and thermal characteristics. The NCV variant adds AEC-Q100 qualification, PPAP capability, and automotive-specific process controls, but no physical or functional pinout differences exist.
What is the thermal resistance (RJA) of MC33375D-3.0R2 in standard SOIC-8 layout?
In a standard SOIC-8 footprint with minimal copper (JEDEC-standard 2-layer board), the MC33375D-3.0R2 exhibits RJA = 160 °C/W. With 1-inch² 2-oz copper pour under the exposed pad, RJA improves to ~60 °C/W - critical for sustaining 300 mA at elevated ambient temperatures.
MC33375D-3.0R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 13V
- Voltage - Output (Min/Fixed):
- 3V
- 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:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MC33375D-3.0R2 FAQ
1.How can I place an order for MC33375D-3.0R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33375D-3.0R2 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 MC33375D-3.0R2 reliable?
The price and inventory of MC33375D-3.0R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33375D-3.0R2 is usually 5 days.
3.What payment methods are accepted for MC33375D-3.0R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33375D-3.0R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33375D-3.0R2?
MC33375D-3.0R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33375D-3.0R2 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 MC33375D-3.0R2?
For technical support, including MC33375D-3.0R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33375D-3.0R2 requirements.
6.How does Aetrix verify that MC33375D-3.0R2 is sourced from the original manufacturer or authorized distributors?
All MC33375D-3.0R2 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 MC33375D-3.0R2 meets industry standards.
7.What is the process for return or replacement of MC33375D-3.0R2?
All MC33375D-3.0R2 units undergo pre-shipment inspection (PSI). If there is an issue with MC33375D-3.0R2, 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 MC33375D-3.0R2 part is unused and in its original packaging.
Return procedure for MC33375D-3.0R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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