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onsemi MC33275D-5.0
- Part No.:
- MC33275D-5.0
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC33275D-5.0.pdf
- Description:
- IC REG LINEAR 5V 300MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,404
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Product details
Overview
MC33275D-5.0 from onsemi is a fixed-output 5.0 V, 300 mA micropower low dropout (LDO) voltage regulator in SOIC-8 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 battery-powered handheld instruments requiring extended runtime and low-noise supply.
For engineers reviewing the MC33275D-5.0 datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage vs. load current, thermal shutdown threshold (150°C), quiescent current (125–200 µA), and compatibility with low-ESR ceramic capacitors in space-constrained layouts.
Technical Context
The MC33275D-5.0 employs a PNP pass transistor architecture enabling sub-260 mV dropout at full 300 mA load while maintaining stability with minimal 0.22 µF output capacitance. Its internal thermal shutdown (150°C) and current limit (~450 mA) operate independently to protect against sustained overload or ambient overheating.
Line regulation is specified at ≤10 mV over input range (6.0 V to 12 V), and load regulation remains ≤25 mV from 0 to 250 mA. Ripple rejection exceeds 65 dB at 120 Hz, and output noise is 46 µVRMS (10 Hz–100 kHz) with 200 µF capacitor - confirming suitability for noise-sensitive analog and mixed-signal circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.00 V ±1% at TA = 25°C; ±2% over −40°C to +125°C - ensures stable MCU core/peripheral rail under wide temperature and aging conditions. |
| Max Output Current | 300 mA continuous - supports moderate-power microcontrollers, sensors, and interface ICs without external boost circuitry. |
| Dropout Voltage | 260 mV at 300 mA - enables operation down to VIN = 5.26 V, critical for single-cell Li-ion or dual-cell alkaline systems. |
| Quiescent Current | 125–200 µA (ON mode) - extends battery life in always-on or low-duty-cycle portable devices. |
| Thermal Shutdown | 150°C junction temperature - provides fail-safe protection during PCB layout thermal bottlenecks or high ambient operation. |
| Ripple Rejection | ≥65 dB at 120 Hz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Stability Capacitance | 0.22 µF ceramic (min) - allows use of small, low-profile MLCCs; no tantalum required, reducing BOM cost and footprint. |
Pinout & Package
MC33275D-5.0 uses the SOIC-8 (Case 751) surface-mount package with exposed pad for thermal enhancement. Pin 1 is marked by notch or dot; pins 4 and 5 are not connected (N/C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Vin) | Input voltage supply | Accepts 5.26–13 V DC; requires local 0.33 µF bypass capacitor placed adjacent to pin for transient immunity. |
| 2 (GND) | Ground reference | Primary ground return path; must be tied directly to low-impedance PCB ground plane near regulator and output cap. |
| 3 (Vout) | Regulated output | Delivers stable 5.0 V; output capacitor (≥0.22 µF) must be placed within 2 mm of this pin for stability. |
| 4 (N/C) | No connection | Internally unconnected; must remain floating - no routing or soldering allowed. |
| 5 (N/C) | No connection | Internally unconnected; must remain floating - no routing or soldering allowed. |
| 6 (GND) | Secondary ground terminal | Provides additional low-inductance ground path; must be connected to same ground plane as Pin 2. |
| 7 (GND) | Secondary ground terminal | Provides additional low-inductance ground path; must be connected to same ground plane as Pin 2. |
| 8 (GND) | Secondary ground terminal | Provides additional low-inductance ground path; must be connected to same ground plane as Pin 2. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 25 mV at 10 mA load - enables regulation from near-dead batteries in backup power applications. |
| Tight output tolerance | ±1% at 25°C, ±2% over full temperature range - eliminates need for post-regulation trimming in precision analog subsystems. |
| Low-noise operation | 46 µVRMS (10 Hz–100 kHz) with 200 µF output cap - suitable for ADC references and RF front-end bias rails. |
| Internal protection | Current limit (~450 mA) + thermal shutdown (150°C) - prevents damage during short-circuit or poor heatsinking without external components. |
| Pb-free & RoHS compliant | Meets J-STD-609 Class 2 moisture sensitivity; compatible with standard lead-free reflow profiles (peak 260°C). |
Applications
| Hand-Held Instruments | Camcorders & Digital Cameras |
|---|---|
Use Scenario: Portable multimeters and oscilloscope probes powered by two AA cells (3.0 V nominal) with boost converter feeding MC33275D-5.0. IC Role / Device Role / Timing Role: Primary 5.0 V system rail regulator for microcontroller, display driver, and analog front-end. Use Value: 260 mV dropout allows >90% battery utilization; 125 µA quiescent current extends standby time beyond 1 year. |
Use Scenario: Image sensor and ISP power domain in compact camcorders where board space limits heat sink area. IC Role / Device Role / Timing Role: Clean 5.0 V supply for CMOS image sensor bias and video processing ASIC. Use Value: 65 dB ripple rejection suppresses switching noise from DC/DC converter, preventing image banding artifacts. |
| Battery-Powered Consumer Products | Industrial Data Loggers |
Use Scenario: Smart remote controls using CR2032 coin cell (3.0 V) with charge pump generating ~6.5 V input to MC33275D-5.0. IC Role / Device Role / Timing Role: Regulated 5.0 V rail for BLE SoC, touch controller, and LED backlight driver. Use Value: 0.22 µF stability requirement enables 0402-size ceramic capacitor, saving >1.5 mm² PCB area per unit. |
Use Scenario: Remote environmental sensor node operating at −40°C to +85°C with long-term field deployment. IC Role / Device Role / Timing Role: Main 5.0 V supply for low-power MCU, SD card interface, and RS-485 transceiver. Use Value: ±2% output tolerance over full temperature range ensures reliable SD card initialization and communication integrity. |
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 quiescent current; SOT-23-5 package; 350 mV dropout at 250 mA. | Better for ultra-low-power sleep modes; lower current capacity limits use with higher-drive peripherals. | Select when <100 µA IQ dominates design priority and load stays below 250 mA. |
| NCP1117ST50T3G | 1 A output; 6 mA quiescent current; TO-220/SOT-223; 1.2 V dropout at 800 mA; no thermal foldback. | Higher power and thermal robustness; unsuitable for battery life-critical designs due to 6 mA IQ. | Select when >300 mA load or industrial-grade thermal margin is required, and efficiency is secondary. |
Compared with MCP1700T-5002E/MB, MC33275D-5.0 delivers 20% higher current and tighter output tolerance but consumes ~100× more quiescent current; versus NCP1117ST50T3G, it offers 5× lower IQ and smaller SOIC-8 footprint but sacrifices current headroom and thermal resilience.
Availability
MC33275D-5.0 is available at Aetrix Electronics and suitable for battery-powered consumer products, handheld instruments, and industrial data loggers requiring stable component supply across automotive-grade temperature ranges and long production lifecycles.
Supply support for MC33275D-5.0 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, delivering silicon solutions for automotive, industrial, cloud, and IoT applications.
The MC33275 series belongs to onsemi's precision analog LDO portfolio, designed specifically for battery-operated equipment where ultra-low dropout, micropower operation, and wide-temperature reliability are mandatory.
FAQ
What is the minimum input voltage required for MC33275D-5.0 to maintain regulation?
The MC33275D-5.0 maintains regulation as long as input voltage exceeds output voltage by its dropout voltage. At 300 mA load, dropout is 260 mV - so minimum VIN = 5.0 V + 0.26 V = 5.26 V. At lighter loads (e.g., 10 mA), dropout drops to 25 mV, allowing VIN as low as 5.025 V. This behavior is confirmed in Figure 7 of the datasheet.
Can MC33275D-5.0 be used with ceramic output capacitors smaller than 1 µF?
Yes - the MC33275D-5.0 is stable with as little as 0.22 µF ceramic output capacitance for the 5.0 V version, per Section "EXTERNAL CAPACITORS" on page 8 of the datasheet. This is significantly lower than typical LDO requirements and enables use of compact 0402/0603 MLCCs without compromising stability.
Does MC33275D-5.0 include reverse polarity or overvoltage protection?
No - the MC33275D-5.0 does not integrate reverse-polarity or input overvoltage protection. It relies on external circuitry (e.g., series diode or TVS) for such protection. The device includes only internal current limiting and thermal shutdown, as stated in the Applications Information section (page 8) and Maximum Ratings table (page 2).
How does thermal shutdown behave during sustained overload on MC33275D-5.0?
When junction temperature reaches ~150°C, MC33275D-5.0 disables output with no hysteresis. As temperature falls below threshold, output resumes - causing visible oscillation in output voltage under constant overload. This behavior is explicitly documented in the Thermal Protection section (page 8) and is not a fault condition but an intended safety response.
Is MC33275D-5.0 pin-compatible with other variants in the MC33275 family?
Yes - all MC33275 variants (e.g., MC33275D-3.3R2G, MC33275D-2.5R2G) share identical SOIC-8 pinout and footprint (Case 751). Voltage-setting is internal; no external resistors are needed. This allows drop-in replacement across output voltages without PCB redesign, as confirmed in the Ordering Information table (page 10) and Pin Connections diagram (page 2).
MC33275D-5.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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-5.0 FAQ
1.How can I place an order for MC33275D-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33275D-5.0 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-5.0 reliable?
The price and inventory of MC33275D-5.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33275D-5.0 is usually 5 days.
3.What payment methods are accepted for MC33275D-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33275D-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33275D-5.0?
MC33275D-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33275D-5.0 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-5.0?
For technical support, including MC33275D-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33275D-5.0 requirements.
6.How does Aetrix verify that MC33275D-5.0 is sourced from the original manufacturer or authorized distributors?
All MC33275D-5.0 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-5.0 meets industry standards.
7.What is the process for return or replacement of MC33275D-5.0?
All MC33275D-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with MC33275D-5.0, 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-5.0 part is unused and in its original packaging.
Return procedure for MC33275D-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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