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onsemi MC33275MN-5.0R2G
- Part No.:
- MC33275MN-5.0R2G
- Manufacturer:
- onsemi
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
MC33275MN-5.0R2G.pdf
- Description:
- IC REG LINEAR 5V 300MA 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,666
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Product details
Overview
MC33275MN-5.0R2G from onsemi is a fixed-output 5.0 V, 300 mA micropower low dropout (LDO) voltage regulator in an 8-pin DFN 4×4 mm package. It delivers ultra-low dropout of 25 mV at 10 mA and 260 mV at 300 mA, features ±2% output voltage tolerance over −40°C to +125°C, and operates with input voltages up to 13 V. It is optimized for battery-powered portable instrumentation requiring extended runtime and stable regulation under light-to-full load.
For engineers reviewing the MC33275MN-5.0R2G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout performance at 300 mA, thermal shutdown at 150°C, stability with only 0.22 µF output capacitance, and Pb-free DFN-8 packaging suitable for space-constrained industrial and consumer designs.
Technical Context
The MC33275MN-5.0R2G employs a PNP pass transistor architecture enabling low dropout operation across its full 300 mA load range. Its internal reference is trimmed to 1.23 V, and feedback network sets nominal 5.0 V output with tight line regulation (≤10 mV) and load regulation (≤25 mV).
It integrates thermal shutdown (150°C activation, no hysteresis) and current limiting (450 mA typical), with quiescent current as low as 125 µA in normal operation and 1.5 mA in saturation mode - critical for battery longevity in always-on systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2% over −40°C to +125°C - ensures stable logic supply for microcontrollers and sensors across automotive-grade temperature range. |
| Max Output Current | 300 mA continuous - sufficient to power multiple ICs (e.g., MCU + interface + sensor) from single LDO rail. |
| Dropout Voltage | 260 mV at 300 mA - enables regulation down to VIN = 5.26 V, extending usable battery life in 2-cell Li-ion or 4-cell alkaline systems. |
| Quiescent Current | 125 µA typical at 0 mA load - minimizes standby power loss in battery-backed real-time clocks or IoT edge nodes. |
| Stability Capacitance | 0.22 µF ceramic output capacitor - reduces BOM count and PCB area vs. legacy LDOs requiring ≥1 µF. |
| Ripple Rejection | 65 dB at 120 Hz - suppresses switching noise from upstream DC/DC converters feeding sensitive analog circuitry. |
| Thermal Shutdown | 150°C junction threshold - protects against sustained overload or poor heatsinking without external circuitry. |
Pinout & Package
MC33275MN-5.0R2G uses the DFN-8 (4×4 mm, case 488AF) package with exposed thermal pad. Pin 1 is marked by a dot or notch; pins are numbered counter-clockwise from top-left when viewed top-side with marking visible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input supply connection; accepts up to 13 V DC; requires local 0.33 µF bypass capacitor. |
| 2 | GND | Analog ground reference; must be connected to PCB ground plane beneath exposed pad for thermal and noise performance. |
| 3 | GND | Second ground terminal - improves current handling and reduces ground impedance in high-noise environments. |
| 4 | GND | Third ground terminal - enhances thermal conduction from die to PCB via exposed pad soldering. |
| 5 | N/C | No internal connection - left unconnected; not used for bias or configuration. |
| 6 | VOUT | Regulated 5.0 V output; connects directly to load; requires 0.22 µF ceramic capacitor to GND within 5 mm. |
| 7 | N/C | No internal connection - electrically isolated; no routing or stitching required. |
| 8 | GND | Fourth ground terminal - completes low-inductance return path and supports thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 25 mV at 10 mA load - enables operation with minimal headroom, e.g., powering 5 V logic from partially discharged 2S Li-ion (7.2 V → 5.025 V viable). |
| Micropower quiescent current | 125 µA typical - extends shelf life and operational runtime in coin-cell–powered devices like smoke detectors or asset trackers. |
| Minimal external capacitance | 0.22 µF ceramic output cap - eliminates need for large tantalum or electrolytic capacitors, reducing cost and footprint. |
| Integrated protection | Current limit (450 mA) + thermal shutdown (150°C) - removes requirement for discrete foldback or thermal sensors in compact designs. |
| Pb-free DFN-8 package | 4×4 mm body with exposed thermal pad - supports high-density layouts and provides 9.0°C/W junction-to-air thermal resistance with 1.8 oz copper. |
Applications
| Portable Medical Sensors | Industrial Handheld Meters |
|---|---|
Use Scenario: Powering low-power analog front-end (AFE), ADC, and BLE radio in disposable glucose monitors or pulse oximeters. IC Role / Device Role: Primary 5.0 V LDO supplying regulated rail to mixed-signal SoC and precision sensor interfaces. Use Value: 260 mV dropout at 300 mA allows uninterrupted operation until battery reaches ~5.26 V, maximizing single-charge usability. |
Use Scenario: Regulating 5 V supply for microcontroller, LCD driver, and RS-485 transceiver in battery-operated multimeters or clamp meters. IC Role / Device Role: Main system regulator delivering clean, stable voltage despite varying load transients during measurement cycles. Use Value: 65 dB ripple rejection attenuates noise from internal DC/DC converter, preserving ADC accuracy and display clarity. |
| Automotive Body Control Modules | Smart Home Sensor Hubs |
Use Scenario: Providing 5.0 V bias to LIN transceivers, door lock actuators, and ambient light sensors in non-safety-critical vehicle subsystems. IC Role / Device Role: Secondary LDO in AEC-Q100–qualified NCV33275 family derivatives; MC33275MN-5.0R2G serves identical function in industrial variants. Use Value: −40°C to +125°C operating range and 2% output tolerance ensure reliable startup and operation across extreme under-hood temperatures. |
Use Scenario: Powering Zigbee/Thread SoCs, environmental sensors (temp/humidity/CO₂), and LED indicators in battery- or USB-powered smart home hubs. IC Role / Device Role: Low-noise, low-quiescent-current regulator for always-on sensing and wireless connectivity subsystems. Use Value: 125 µA IQ enables >1-year battery life on two AA cells while maintaining fast wake-up response from deep sleep states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-5002E/MB | 250 mA max output, 1.6 µA IQ, SOT-23-3 package - lower current, ultra-low IQ, but no thermal shutdown or current limit. | Suitable for <100 mA always-on sensors; lacks protection for motor-driven or transient-heavy loads. | Select when IQ < 2 µA is mandatory and load never exceeds 250 mA; verify external protection if driving actuators. |
| NCP1117ST50T3G | 1 A output, 6 mV/mA load regulation, TO-220/SOT-223 - higher current, higher dropout (~1.1 V), no micropower mode. | Better for high-current, non-battery applications (e.g., wall-powered gate drivers); unsuitable for long-life portable use. | Choose when >300 mA is needed and input headroom >1.2 V is available; avoid where battery runtime or space is constrained. |
Compared with MCP1700T-5002E/MB, MC33275MN-5.0R2G offers 20% higher current and integrated protection at modest IQ penalty; versus NCP1117ST50T3G, it trades 700 mV higher dropout for 60% smaller footprint and 5× lower quiescent current - ideal for compact, battery-sensitive designs.
Availability
MC33275MN-5.0R2G is available at Aetrix Electronics and suitable for portable medical sensors, industrial handheld meters, and smart home sensor hubs requiring stable component supply, RoHS-compliant packaging, and guaranteed long-term availability.
Supply support for MC33275MN-5.0R2G 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 specializing in energy-efficient silicon solutions for automotive, industrial, cloud, and IoT applications.
The MC33275 series belongs to onsemi's precision analog LDO portfolio, designed specifically for battery-powered equipment where ultra-low dropout, micropower operation, and robust thermal/current protection are essential.
FAQ
What is the minimum input voltage required for MC33275MN-5.0R2G to maintain regulation at full 300 mA load?
The MC33275MN-5.0R2G requires a minimum input voltage of 5.26 V to maintain 5.0 V regulation at 300 mA, based on its maximum dropout voltage of 260 mV. Below this, output voltage drops linearly with input; operation below 5.0 V input is not supported. This headroom enables use with aging alkaline or partially discharged Li-ion batteries.
Can MC33275MN-5.0R2G operate with a 0.1 µF ceramic output capacitor?
No - MC33275MN-5.0R2G requires a minimum of 0.22 µF ceramic output capacitance for stability per the datasheet. Using 0.1 µF risks oscillation or poor transient response. The device is optimized for 0.22–10 µF X7R/X5R ceramics; larger values improve noise suppression but do not harm stability.
Does MC33275MN-5.0R2G include reverse polarity or reverse current protection?
No - MC33275MN-5.0R2G does not integrate reverse polarity or reverse current protection. If input can be reversed (e.g., during hot-swap or battery insertion), an external series Schottky diode or ideal diode controller is required to prevent damage or backfeed.
How does thermal shutdown behave in MC33275MN-5.0R2G during sustained overload?
MC33275MN-5.0R2G thermal shutdown activates at ~150°C junction temperature with no hysteresis. During sustained overload, the output toggles on/off as temperature crosses the threshold - appearing as oscillation. This is intentional behavior; proper PCB copper area and airflow must be designed to avoid repeated cycling, as it degrades long-term reliability.
Is MC33275MN-5.0R2G pin-compatible with other MC33275 package variants like SOIC-8 or SOT-223?
No - MC33275MN-5.0R2G (DFN-8) has a unique 8-pin layout incompatible with MC33275D (SOIC-8) or MC33275ST (SOT-223). Pin functions differ: DFN-8 uses four GND pins and two N/C terminals, while SOIC-8 has standard 4-pin linear regulator pinout (VIN, GND, VOUT, N/C). PCB redesign is required for package substitution.
MC33275MN-5.0R2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- 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-DFN (4x4)
MC33275MN-5.0R2G FAQ
1.How can I place an order for MC33275MN-5.0R2G through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33275MN-5.0R2G 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 MC33275MN-5.0R2G reliable?
The price and inventory of MC33275MN-5.0R2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33275MN-5.0R2G is usually 5 days.
3.What payment methods are accepted for MC33275MN-5.0R2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33275MN-5.0R2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33275MN-5.0R2G?
MC33275MN-5.0R2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33275MN-5.0R2G 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 MC33275MN-5.0R2G?
For technical support, including MC33275MN-5.0R2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33275MN-5.0R2G requirements.
6.How does Aetrix verify that MC33275MN-5.0R2G is sourced from the original manufacturer or authorized distributors?
All MC33275MN-5.0R2G 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 MC33275MN-5.0R2G meets industry standards.
7.What is the process for return or replacement of MC33275MN-5.0R2G?
All MC33275MN-5.0R2G units undergo pre-shipment inspection (PSI). If there is an issue with MC33275MN-5.0R2G, 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 MC33275MN-5.0R2G part is unused and in its original packaging.
Return procedure for MC33275MN-5.0R2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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