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onsemi MC33375D-3.0G
- Part No.:
- MC33375D-3.0G
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC33375D-3.0G.pdf
- Description:
- IC REG LINEAR 3V 300MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,427
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Product details
Overview
MC33375D-3.0G from onsemi is a micropower, low-dropout linear voltage regulator delivering a fixed 3.0 V output at up to 300 mA, housed in an SOIC-8 (Case 751) package with Pb-free finish. It features logic-level ON/OFF control, 260 mV dropout at full load, internal thermal and current limiting, and stable operation with only 0.33 µF output capacitance - ideal for battery-powered industrial sensors and portable instrumentation.
For engineers reviewing the MC33375D-3.0G datasheet, pinout, applications, or equivalent options, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, confirmed alternatives, and supply-chain support tailored for embedded power management selection.
Technical Context
The MC33375D-3.0G uses a PNP pass transistor architecture enabling ultra-low quiescent current (125 µA in ON mode, 0.3 µA in OFF mode) and tight line/load regulation (≤10 mV and ≤25 mV respectively). Its control pin accepts TTL/CMOS-compatible logic levels (≥2.4 V for ON, ≤0.5 V for OFF), directly disabling the output without external circuitry.
Thermal shutdown activates at 150 °C with no hysteresis, causing output oscillation until junction temperature falls below threshold. Internal current limit is fixed at 450 mA, independent of ambient conditions, and operates alongside thermal protection to prevent device damage under sustained overload.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.00 V ±2% over −40 °C to +125 °C - ensures stable MCU core or analog sensor biasing across automotive and industrial temperature ranges. |
| Max Output Current | 300 mA - sufficient to power microcontrollers, RF transceivers, or multi-sensor nodes without external boost stages. |
| Dropout Voltage | 260 mV at 300 mA - enables regulation from 3.26 V input, critical for single-cell Li-ion or two-cell alkaline systems. |
| Quiescent Current | 125 µA (ON), 0.3 µA (OFF) - extends battery life in always-on monitoring devices by minimizing standby drain. |
| Ripple Rejection | 65 dB at 120 Hz - suppresses AC ripple from switching pre-regulators or noisy DC sources before sensitive analog circuits. |
| Stability Capacitance | 0.33 µF minimum ceramic/tantalum - reduces BOM count and PCB area versus legacy LDOs requiring ≥10 µF. |
| Thermal Shutdown | 150 °C junction - protects against solder reflow damage and continuous overcurrent in enclosed enclosures. |
Pinout & Package
MC33375D-3.0G is packaged in SOIC-8 (Case 751), with exposed pad not electrically connected. Thermal resistance is 160 °C/W (junction-to-ambient) at TA = 25 °C on standard FR-4 board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (Vin) | Unregulated DC input; must be ≥3.26 V for full 300 mA output; requires local 0.33 µF bypass capacitor. |
| 2 | Ground (GND) | Power ground reference; connects to common return path for load and input capacitor. |
| 3 | Ground (GND) | Second GND terminal - improves thermal dissipation and reduces ground impedance in high-current paths. |
| 4 | ON/OFF Control | Active-low enable; pulled high internally; <0.5 V disables regulator, reducing IQ to 0.3 µA. |
| 5 | Ground (GND) | Third GND terminal - enhances noise immunity and current sharing across package leads. |
| 6 | Ground (GND) | Fourth GND terminal - supports low-impedance return for output current and improves thermal conduction. |
| 7 | Output (Vout) | Regulated 3.0 V output; connects directly to load; requires 0.33 µF ceramic capacitor within 5 mm. |
| 8 | Ground (GND) | Fifth GND terminal - completes symmetrical grounding scheme for EMI reduction and thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Logic-level ON/OFF control | Direct interface with 3.3 V or 5 V microcontrollers without level-shifting; eliminates external MOSFET gate drivers. |
| Low dropout at full load | 260 mV @ 300 mA enables use with marginal input sources like aging batteries or post-dropper supplies. |
| Ultra-low quiescent current | 125 µA active / 0.3 µA shutdown minimizes battery depletion in wake-on-event sensor nodes. |
| Internal protection | Auto-recovering thermal shutdown and 450 mA current limit eliminate need for external fuses or thermal sensors. |
| Minimal external components | Stable with 0.33 µF output cap - reduces cost, footprint, and failure points versus LDOs needing ≥10 µF tantalum. |
Applications
| Industrial Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data via BLE every 5 seconds. IC Role / Device Role / Timing Role: Primary 3.0 V power rail for MCU, sensor IC, and RF transceiver; enabled only during active measurement/transmit cycles. Use Value: 0.3 µA shutdown current extends 2×AA battery life beyond 2 years; 260 mV dropout allows operation down to 3.26 V input as cells deplete. | Use Scenario: Handheld pulse oximeter with OLED display and analog front-end operating from two AAA cells. IC Role / Device Role / Timing Role: Fixed 3.0 V supply for ADC, op-amps, and display driver; ON/OFF controlled by system sleep controller. Use Value: 125 µA quiescent current preserves battery during standby; 65 dB ripple rejection prevents switching noise from affecting SpO₂ accuracy. |
| Automotive Body Controller | Smart Home Hub Power Rail |
Use Scenario: Low-power door module monitoring switch status and controlling LED indicators in 12 V vehicle system. IC Role / Device Role / Timing Role: Secondary 3.0 V rail derived from 5 V pre-regulator; ON/OFF synchronized with CAN bus activity. Use Value: −40 °C to +125 °C operation meets AEC-Q100 ambient requirements; internal thermal shutdown prevents latch-up during hot-cranking events. | Use Scenario: Always-on Zigbee coordinator with Wi-Fi backup, powered by USB-C PD (5 V) with deep-sleep capability. IC Role / Device Role / Timing Role: Standby power domain regulator; disabled during network idle periods to minimize system leakage. Use Value: Logic-level enable allows direct GPIO control from ESP32; 0.33 µF stability enables compact 2-layer PCB layout without large electrolytics. |
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), SOT-223 package, no ON/OFF pin | Higher current capacity but lacks enable control; unsuitable for duty-cycled battery systems | Select when >300 mA load or TO-223 mounting is required; avoid where ultra-low IQ or logic control is critical |
| MCP1700T-3002E/MB | 3.0 V, 250 mA, 1.6 µA IQ (ON), SOT-23-5, no thermal shutdown | Lower IQ but no overtemperature protection; limited to <250 mA loads and benign thermal environments | Select for ultra-long-life coin-cell applications with light loads; avoid in enclosed or high-ambient designs |
Compared with NCP1117ST30T3G and MCP1700T-3002E/MB, MC33375D-3.0G uniquely balances 300 mA drive, 0.3 µA shutdown, integrated thermal/current protection, and logic-enable - making it optimal for thermally constrained, battery-sensitive industrial nodes where reliability and power-state control are co-prioritized.
Availability
MC33375D-3.0G is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, automotive body controllers, and smart home hub power rails requiring stable component supply with long-term lifecycle assurance.
Supply support for MC33375D-3.0G 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, serving automotive, industrial, cloud, and IoT markets with discrete, analog, and power management solutions.
The MC33375 series was designed specifically for micropower, low-dropout regulation in battery-constrained and thermally demanding applications - emphasizing ultra-low IQ, robust protection, and minimal external component count.
FAQ
What is the maximum input voltage rating for MC33375D-3.0G?
The MC33375D-3.0G has an absolute maximum input voltage of 13 V DC. Exceeding this may cause permanent damage. For reliable operation, input should remain within 3.26 V to 12 V to maintain regulation and stay within safe power dissipation limits given its 160 °C/W thermal resistance in SOIC-8.
Does MC33375D-3.0G require an external pull-up resistor on the ON/OFF pin?
No - the MC33375D-3.0G includes an internal pull-up on the ON/OFF pin. The pin is active-low and defaults to regulator enable when left unconnected. A pull-down resistor (<10 kΩ) is only needed if driving from an open-drain source or to ensure defined state during MCU reset.
Can MC33375D-3.0G operate with a 0.22 µF output capacitor?
No - MC33375D-3.0G requires a minimum of 0.33 µF output capacitance for stability per the datasheet. While 0.22 µF is specified only for 5.0 V versions, using smaller values risks oscillation or poor transient response. Ceramic or tantalum capacitors meeting ESR requirements (≤1 Ω at 100 kHz) are recommended.
Is MC33375D-3.0G qualified for automotive applications?
MC33375D-3.0G is not AEC-Q100 qualified. For automotive use, select the NCV33375D-3.0R2G variant, which carries the NCV prefix, undergoes automotive-grade qualification, and supports PPAP documentation. The D-suffix part is intended for industrial and consumer applications.
What happens to the output during thermal shutdown of MC33375D-3.0G?
During thermal shutdown, the MC33375D-3.0G output disables completely with no hysteresis. As junction temperature drops below ~150 °C, the output re-enables - potentially causing visible oscillation in output voltage if thermal stress persists. This behavior is intentional and documented; proper heatsinking or derating is required to avoid repeated cycling.
MC33375D-3.0G 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-3.0G FAQ
1.How can I place an order for MC33375D-3.0G through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33375D-3.0G 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-3.0G reliable?
The price and inventory of MC33375D-3.0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33375D-3.0G is usually 5 days.
3.What payment methods are accepted for MC33375D-3.0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33375D-3.0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33375D-3.0G?
MC33375D-3.0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33375D-3.0G 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-3.0G?
For technical support, including MC33375D-3.0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33375D-3.0G requirements.
6.How does Aetrix verify that MC33375D-3.0G is sourced from the original manufacturer or authorized distributors?
All MC33375D-3.0G 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-3.0G meets industry standards.
7.What is the process for return or replacement of MC33375D-3.0G?
All MC33375D-3.0G units undergo pre-shipment inspection (PSI). If there is an issue with MC33375D-3.0G, 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-3.0G part is unused and in its original packaging.
Return procedure for MC33375D-3.0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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