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onsemi MC33275D-3.0R2G
- Part No.:
- MC33275D-3.0R2G
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC33275D-3.0R2G.pdf
- Description:
- IC REG LINEAR 3V 300MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,490
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Product details
Overview
MC33275D-3.0R2G from onsemi is a fixed-output 3.0 V, 300 mA micropower low dropout (LDO) linear voltage regulator in SOIC-8 package. It delivers ultra-low dropout voltage (25 mV at 10 mA, 260 mV at 300 mA), tight line/load regulation (<10 mV), and operates across −40°C to +125°C. It is used in battery-powered handheld instruments requiring extended runtime and stable low-noise supply.
For engineers reviewing the MC33275D-3.0R2G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout performance at full load, quiescent current (125 µA typ), thermal shutdown threshold (150°C), output stability with minimal capacitance (0.33 µF), and automotive-grade alternatives for harsh environments.
Technical Context
The MC33275D-3.0R2G employs a PNP pass transistor architecture enabling low dropout operation independent of input voltage headroom constraints typical of NMOS-based LDOs. Its internal reference is trimmed to ±2% over −40°C to +125°C, and regulation is maintained with only 0.33 µF output capacitance for 3.0 V output.
Thermal protection activates at 150°C junction temperature without hysteresis, causing output cycling until cooling occurs. Current limiting is internally set to 450 mA, complementing thermal shutdown to prevent damage under sustained overload or high ambient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.00 V ±2% over −40°C to +125°C - ensures stable logic supply for microcontrollers and sensors in wide-temperature industrial deployments. |
| Max Output Current | 300 mA - sufficient to power mid-complexity embedded subsystems (e.g., MCU + RF transceiver + sensor interface) from a single LDO. |
| Dropout Voltage | 260 mV at 300 mA - enables operation down to VIN = 3.26 V, critical for single-cell Li-ion (3.0–3.6 V) or two-cell alkaline (2.4–3.2 V) systems. |
| Quiescent Current | 125 µA typical - extends battery life in always-on monitoring devices (e.g., IoT edge nodes) by minimizing standby power loss. |
| Ripple Rejection | 65 dB at 120 Hz - suppresses AC ripple from switching pre-regulators or noisy DC sources, preserving analog signal integrity. |
| Thermal Shutdown | 150°C junction - provides fail-safe protection during transient overloads or inadequate PCB copper area, preventing permanent silicon damage. |
| Stability Capacitance | 0.33 µF ceramic - eliminates need for large electrolytic capacitors, reducing board space and cost while supporting compact portable designs. |
Pinout & Package
MC33275D-3.0R2G uses the SOIC-8 (Case 751) surface-mount package with exposed pad thermal enhancement. Pin 1 is marked via notch or beveled corner; pins are numbered counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Vin) | Input voltage supply | Accepts up to 13 V DC input; requires local 0.33 µF bypass capacitor placed adjacent to pin for transient immunity. |
| 2 (GND) | Ground reference | Primary ground return for regulator control circuitry; must connect directly to low-impedance system ground plane. |
| 3 (GND) | Ground reference | Dual GND pins reduce ground path impedance and improve PSRR; both must be soldered to PCB ground pour. |
| 4 (GND) | Ground reference | Third GND terminal enhances thermal conduction to PCB copper; tied internally to exposed pad for heatsinking. |
| 5 (N/C) | No connection | Internally unconnected; must remain floating - no routing or soldering permitted. |
| 6 (N/C) | No connection | Internally unconnected; must remain floating - no routing or soldering permitted. |
| 7 (Vout) | Regulated output | Delivers stable 3.0 V to load; output capacitor (≥0.33 µF) must be placed within 5 mm of this pin and pin 2/3/4. |
| 8 (GND) | Ground reference | Fourth GND terminal; completes low-inductance return path and improves thermal dissipation via exposed pad contact. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 25 mV at 10 mA load - enables regulation from near-dead batteries (e.g., 3.025 V input sustains 3.0 V output), maximizing usable cell energy. |
| Tight load regulation | ≤25 mV variation from 0 to 250 mA - maintains consistent voltage for precision ADC references and clock buffers across dynamic load changes. |
| Low-noise output | 46 µVrms (10 Hz–100 kHz, 200 µF Cout) - minimizes supply-induced jitter in timing-critical circuits like PLLs and high-speed serial interfaces. |
| Internal protection | Current limit (450 mA) + thermal shutdown (150°C) - eliminates need for external foldback or thermal sensors in space-constrained designs. |
| Pb-free & RoHS compliant | Meets JEDEC J-STD-020 moisture sensitivity level 3 - supports lead-free reflow assembly without popcorn cracking risk. |
Applications
| Battery-Powered Handheld Instruments | Industrial Sensor Nodes |
|---|---|
|
Use Scenario: Portable multimeters, thermal imagers, and gas detectors operating from two AA/AAA cells or single Li-ion. IC Role / Device Role / Timing Role: Primary 3.0 V power rail for MCU, display driver, and analog front-end; supplies clean bias for precision op-amps and ADCs. Use Value: 125 µA quiescent current extends battery life beyond 1 year in sleep mode; 0.33 µF stability enables use of small 0402 ceramic caps. |
Use Scenario: Wireless vibration or temperature sensors mounted on motors, pumps, or HVAC ducts in factory settings. IC Role / Device Role / Timing Role: Local 3.0 V regulator for low-power MCU, MEMS accelerometer, and sub-GHz RF transceiver (e.g., Si4463). Use Value: −40°C to +125°C operation ensures reliability inside enclosures exposed to ambient extremes; 260 mV dropout allows uninterrupted function as battery depletes. |
| Camcorders & Digital Cameras | Automotive Body Control Modules |
|
Use Scenario: Compact camcorders using rechargeable Li-ion packs where size and runtime are critical. IC Role / Device Role / Timing Role: Supplies 3.0 V to image sensor interface, SD card controller, and video encoder ASIC. Use Value: 65 dB ripple rejection prevents switching noise from DC-DC converters from corrupting analog video signals or causing pixel artifacts. |
Use Scenario: Non-safety-critical BCM functions (power window control, mirror adjustment, interior lighting) in passenger vehicles. IC Role / Device Role / Timing Role: Secondary 3.0 V rail derived from 12 V battery; powers CAN transceiver logic, EEPROM, and microcontroller I/O. Use Value: NCV33275ST-3.0T3G is AEC-Q100 qualified; MC33275D-3.0R2G serves as cost-optimized alternative where qualification is not mandated. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV33275ST-3.0T3G | AEC-Q100 qualified SOT-223 variant; same electrical specs but automotive-graded process and test flow. | Required for automotive body electronics subject to PPAP; wider temp range (−40°C to +150°C junction). | Select when automotive qualification, extended junction temperature, or smaller SOT-223 footprint is needed. |
| MCP1700T-3002E/MB | 150 mA max output, 2.3 µA IQ, SOT-23-3 package; lower current but ultra-low quiescent current. | Suitable for ultra-low-power wake-on-event sensors; insufficient for 300 mA loads like displays or RF power amps. | Select when <100 µA IQ is mandatory and load current ≤150 mA - trades output capability for extreme battery longevity. |
Compared with NCV33275ST-3.0T3G, MC33275D-3.0R2G offers identical regulation performance in a larger SOIC-8 package with better thermal dissipation on standard PCBs, while MCP1700T-3002E/MB sacrifices output current and dropout voltage to achieve sub-µA quiescent operation for intermittent-sensing applications.
Availability
MC33275D-3.0R2G is available at Aetrix Electronics and suitable for battery-powered consumer products, handheld instrumentation, and industrial sensor nodes requiring stable component supply with long-term manufacturability.
Supply support for MC33275D-3.0R2G 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 focused on energy-efficient electronics, with leadership in power management, analog, and sensing technologies.
The MC33275 series belongs to onsemi's precision linear regulator product line, designed specifically for battery-operated and thermally constrained applications demanding low dropout, low IQ, and robust protection features.
FAQ
What is the minimum input voltage required for MC33275D-3.0R2G to maintain regulation at 300 mA load?
The MC33275D-3.0R2G requires a minimum input voltage of 3.26 V to sustain 3.0 V output at 300 mA, based on its maximum dropout voltage of 260 mV. Below this, output voltage drops linearly with input; operation below 3.26 V is permissible but results in unregulated output. The absolute maximum input is 13 V.
Can MC33275D-3.0R2G operate with a 0.22 µF output capacitor?
No - MC33275D-3.0R2G requires ≥0.33 µF output capacitance for guaranteed stability at 3.0 V output. While 5.0 V versions accept 0.22 µF, the 3.0 V variant's internal compensation mandates 0.33 µF minimum. Using smaller values risks oscillation or poor transient response.
Does MC33275D-3.0R2G include reverse polarity protection?
No - MC33275D-3.0R2G lacks integrated reverse-voltage protection. Applying reversed input voltage may damage the IC. External protection (e.g., series Schottky diode or MOSFET-based ideal diode) is required if reverse input is possible in the system.
How does thermal shutdown behave in MC33275D-3.0R2G during sustained overload?
MC33275D-3.0R2G thermal shutdown activates at ~150°C junction temperature with no hysteresis. During sustained overload, the output cycles on/off as temperature crosses the threshold - appearing as output oscillation. This is intentional behavior to prevent permanent damage; proper PCB copper area or heatsinking is required to avoid repeated cycling.
Is MC33275D-3.0R2G pin-compatible with other SOIC-8 LDOs like MIC5205-3.0YM?
No - MC33275D-3.0R2G has a unique 4-GND, 2-N/C pinout (pins 2,3,4,8 = GND; pins 5,6 = N/C) incompatible with standard SOIC-8 LDO footprints. Substituting requires PCB redesign. Always verify pin mapping against the official onsemi MC33275D-3.0R2G datasheet before layout.
MC33275D-3.0R2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MC33275D-3.0R2G FAQ
1.How can I place an order for MC33275D-3.0R2G through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33275D-3.0R2G 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-3.0R2G reliable?
The price and inventory of MC33275D-3.0R2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33275D-3.0R2G is usually 5 days.
3.What payment methods are accepted for MC33275D-3.0R2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33275D-3.0R2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33275D-3.0R2G?
MC33275D-3.0R2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33275D-3.0R2G 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-3.0R2G?
For technical support, including MC33275D-3.0R2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33275D-3.0R2G requirements.
6.How does Aetrix verify that MC33275D-3.0R2G is sourced from the original manufacturer or authorized distributors?
All MC33275D-3.0R2G 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-3.0R2G meets industry standards.
7.What is the process for return or replacement of MC33275D-3.0R2G?
All MC33275D-3.0R2G units undergo pre-shipment inspection (PSI). If there is an issue with MC33275D-3.0R2G, 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-3.0R2G part is unused and in its original packaging.
Return procedure for MC33275D-3.0R2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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