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onsemi MC33275MN-5.0R2
- Part No.:
- MC33275MN-5.0R2
- Manufacturer:
- onsemi
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
MC33275MN-5.0R2.pdf
- Description:
- IC REG LINEAR 5V 300MA 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,682
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Product details
Overview
MC33275MN-5.0R2 from onsemi is a fixed-output 5.0 V, 300 mA micropower low-dropout (LDO) voltage regulator in a DFN-8 4×4 mm package. It delivers tight line/load regulation (≤10 mV), ultra-low dropout (260 mV at 300 mA), and stable operation with only 0.22 µF output capacitance - ideal for space-constrained battery-powered instrumentation requiring extended runtime.
For engineers reviewing the MC33275MN-5.0R2 datasheet, pinout, applications, or equivalent options, key selection criteria include thermal performance with exposed pad PCB layout, quiescent current behavior under dropout conditions, ripple rejection above 65 dB at 120 Hz, and compatibility with ceramic output capacitors down to 0.22 µF.
Technical Context
This LDO employs a PNP pass transistor architecture enabling low dropout voltage and high PSRR. Its internal thermal shutdown (150°C) and current limiting (450 mA typical) operate independently without hysteresis, ensuring robust fault protection in portable systems.
The device achieves stability with minimal external components: only a 0.22 µF ceramic capacitor required for 5.0 V output, and no ESR constraints. Ground pin current remains below 200 µA across input voltages from VO to 12 V and ambient temperatures from −40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.00 V ±2% over −40°C to +125°C - ensures reliable logic-level supply for microcontrollers and sensors in wide-temperature environments. |
| Max Output Current | 300 mA continuous - supports moderate-power peripherals like displays, ADCs, and RF modules without external boost circuitry. |
| Dropout Voltage | 260 mV at 300 mA - enables operation from single-cell Li-ion (3.0 V min) or two-cell alkaline (3.2 V min) with headroom for battery aging. |
| Quiescent Current | 125 µA typical at 0 mA load - extends battery life in always-on monitoring applications such as IoT edge nodes. |
| Ripple Rejection | 65 dB minimum at 120 Hz - suppresses switching noise from upstream DC/DC converters feeding sensitive analog circuits. |
| Thermal Shutdown | 150°C junction temperature - provides fail-safe protection during sustained overload or poor PCB heatsinking. |
| Stability Capacitance | 0.22 µF ceramic required for 5.0 V version - reduces BOM count and board area versus traditional LDOs needing ≥1 µF. |
Pinout & Package
MC33275MN-5.0R2 uses the DFN-8 4×4 mm package (Case 488AF) with an exposed thermal pad (Pin 5) for enhanced heat dissipation. The package features 0.8 mm pitch, coplanar terminals, and is Pb-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (Vin) | Main power input; accepts 5.5 V to 13 V - must be bypassed with ≥0.33 µF capacitor near pin for transient immunity. |
| 2 | Ground (GND) | Analog ground reference; connects to PCB ground plane - critical for noise-sensitive regulation and thermal conduction via exposed pad. |
| 3 | Output (Vout) | Regulated 5.0 V output; requires 0.22 µF ceramic capacitor placed adjacent to pin - determines loop stability and load transient response. |
| 4 | Ground (GND) | Second ground terminal; electrically tied internally to Pin 2 - improves current handling and reduces ground impedance in high-frequency operation. |
| 5 | Exposed Pad | Thermal and electrical ground; soldered to large copper area - lowers RJA to 93°C/W (1.0 oz Cu) and enables 183 mW max power dissipation at TA = 25°C. |
| 6–8 | No Connect (N/C) | Internally unconnected; must remain floating - no routing or soldering required; avoids unintended parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 25 mV at 10 mA load - preserves regulation even when input drops within 25 mV of output, maximizing usable battery capacity. |
| Tight load regulation | ≤25 mV change from 0 to 250 mA - maintains stable 5.0 V supply across dynamic load profiles in handheld instruments. |
| Low-noise operation | 46 µVRMS (10 Hz–100 kHz) with 200 µF output cap - suitable for powering precision ADCs and audio codecs without additional filtering. |
| Internal protection | Current limit (450 mA) + thermal shutdown (150°C) - eliminates need for external fuses or thermal sensors in compact designs. |
| Pb-free & AEC-Q100 capable | NCV33275 variant qualified for automotive - MC33275MN-5.0R2 shares identical die and package, enabling industrial reuse of qualified designs. |
Applications
| Portable Medical Sensors | Industrial Handheld Meters |
|---|---|
|
Use Scenario: Battery-powered pulse oximeter with optical front-end and BLE radio operating continuously for >24 hours on two AA cells. IC Role / Device Role / Timing Role: Primary 5.0 V rail regulator supplying analog sensor signal chain and digital subsystem. Use Value: 125 µA quiescent current and 260 mV dropout extend battery life by 30% vs. legacy LDOs; 0.22 µF stability simplifies layout in tight 2-layer PCB. |
Use Scenario: Ruggedized multimeter with LCD display, autoranging ADC, and isolated USB interface powered by rechargeable Li-ion. IC Role / Device Role / Timing Role: Clean 5.0 V supply for precision reference ICs and microcontroller I/O banks. Use Value: 65 dB ripple rejection prevents switching noise from DC/DC converter from corrupting 16-bit ADC measurements; DFN-8 footprint saves >40% board area vs. SOIC-8. |
| Wireless Sensor Nodes | Automotive Body Control Modules |
|
Use Scenario: Sub-GHz wireless node monitoring temperature/humidity in smart building HVAC ducts, powered by primary lithium thionyl chloride cell. IC Role / Device Role / Timing Role: Always-on 5.0 V regulator enabling ultra-low-power sleep mode and fast wake-up for periodic transmission. Use Value: 200 µA max IQ in saturation (Vin = VO − 0.5 V) ensures regulation remains active during deep battery discharge; −40°C to +125°C rating covers full industrial range. |
Use Scenario: Door module controlling window lift, mirror adjustment, and interior lighting in passenger vehicles. IC Role / Device Role / Timing Role: Secondary 5.0 V regulator for MCU and CAN transceiver, fed from vehicle 12 V rail. Use Value: Thermal shutdown and current limit protect against short-circuited actuators; NCV33275ST-5.0T3G qualification path validates design for automotive use without requalification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCP1117ST50T3G | SO-8 package, 1.2 V dropout at 1 A, higher IQ (6 mA), requires ≥10 µF output cap | Better for high-current, non-battery apps; unsuitable for ultra-low-power or space-constrained designs | Choose if >300 mA load or existing SO-8 footprint; avoid for battery life-critical or miniaturized systems |
| MCP1700T-5002E/MB | SOT-23-3, 250 mA, 1.8 µA IQ, but 600 mV dropout at 250 mA and 1% initial accuracy only | Optimized for micropower sleep modes, not continuous 300 mA operation | Prefer for <100 µA average current apps; MC33275MN-5.0R2 delivers 3× more current with 50× lower dropout |
Compared with NCP1117ST50T3G and MCP1700T-5002E/MB, MC33275MN-5.0R2 uniquely balances 300 mA capability, 260 mV dropout, and 125 µA quiescent current in a thermally efficient DFN-8 package - making it optimal for mid-power portable electronics where runtime, size, and thermal margin are co-constrained.
Availability
MC33275MN-5.0R2 is available at Aetrix Electronics and suitable for battery-powered consumer products, handheld instruments, and industrial sensor nodes requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MC33275MN-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, and sensing solutions for automotive, industrial, and cloud infrastructure markets.
The MC33275 series was designed specifically for micropower, low-dropout regulation in portable and battery-critical systems - emphasizing ultra-low IQ, minimal external components, and robust thermal/current protection without sacrificing output accuracy or transient response.
FAQ
What is the minimum input voltage required for MC33275MN-5.0R2 to maintain regulation?
The MC33275MN-5.0R2 requires an input voltage at least 260 mV above the nominal 5.0 V output to sustain 300 mA load - i.e., Vin ≥ 5.26 V. At lighter loads, dropout falls to 25 mV (Vin ≥ 5.025 V at 10 mA). Below these thresholds, output voltage drops linearly with input.
Can MC33275MN-5.0R2 operate with a 0.1 µF ceramic output capacitor?
No. The MC33275MN-5.0R2 requires a minimum of 0.22 µF ceramic output capacitance for 5.0 V operation to ensure stability across temperature and load. Using 0.1 µF risks oscillation and degraded transient response - confirmed in the datasheet's "External Capacitors" section.
Does MC33275MN-5.0R2 have built-in reverse polarity protection?
No. The MC33275MN-5.0R2 lacks reverse-voltage protection; applying negative voltage to Vin or Vout may damage the device. External protection - such as a series Schottky diode or MOSFET-based circuit - is required in systems prone to battery reversal or hot-swap events.
How does thermal performance of MC33275MN-5.0R2 compare between 1.0 oz and 1.8 oz copper PCB layouts?
With 1.0 oz copper, MC33275MN-5.0R2 has RJA = 93°C/W; with 1.8 oz copper and optimized pad layout, RJA improves to 9.0°C/W. This allows >2× higher power dissipation before thermal shutdown - critical for sustained 300 mA operation in enclosed enclosures.
Is MC33275MN-5.0R2 pin-compatible with other packages in the MC33275 family?
No. MC33275MN-5.0R2 (DFN-8) has a unique 8-pin layout with Pins 6–8 as N/C and Pin 5 as exposed pad. It is not pin-compatible with SOIC-8 (MC33275D-5.0R2G), SOT-223 (MC33275ST-5.0T3G), or DPAK (MC33275DT-5.0RKG) variants - each has distinct pin count, assignment, and thermal pad configuration.
MC33275MN-5.0R2 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-5.0R2 FAQ
1.How can I place an order for MC33275MN-5.0R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33275MN-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 MC33275MN-5.0R2 reliable?
The price and inventory of MC33275MN-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 MC33275MN-5.0R2 is usually 5 days.
3.What payment methods are accepted for MC33275MN-5.0R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33275MN-5.0R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33275MN-5.0R2?
MC33275MN-5.0R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33275MN-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 MC33275MN-5.0R2?
For technical support, including MC33275MN-5.0R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33275MN-5.0R2 requirements.
6.How does Aetrix verify that MC33275MN-5.0R2 is sourced from the original manufacturer or authorized distributors?
All MC33275MN-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 MC33275MN-5.0R2 meets industry standards.
7.What is the process for return or replacement of MC33275MN-5.0R2?
All MC33275MN-5.0R2 units undergo pre-shipment inspection (PSI). If there is an issue with MC33275MN-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 MC33275MN-5.0R2 part is unused and in its original packaging.
Return procedure for MC33275MN-5.0R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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