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onsemi MC33375D-3.0R2G
- Part No.:
- MC33375D-3.0R2G
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC33375D-3.0R2G.pdf
- Description:
- IC REG LINEAR 3V 300MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,363
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Product details
Overview
MC33375D-3.0R2G from onsemi is a 3.0 V fixed-output, 300 mA micropower low dropout (LDO) linear voltage regulator in SOIC-8 package with logic-level ON/OFF control, 260 mV dropout at 300 mA, ±2% output tolerance over −40 °C to +125 °C, and internal thermal/current limiting-designed for battery-powered industrial sensors and portable instrumentation.
For engineers reviewing the MC33375D-3.0R2G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at full load, quiescent current in ON/OFF modes, stability with minimal 0.33 µF output capacitance, and AEC-Q100-comparable thermal shutdown behavior at 150 °C.
Technical Context
The MC33375D-3.0R2G employs a PNP pass transistor architecture enabling ultra-low dropout (25 mV at 10 mA) and micropower operation. Its ON/OFF control pin accepts TTL/CMOS-compatible logic levels (VCTRL ≤ 0.5 V for OFF, ≥ 2.4 V for ON), directly disabling the output without external circuitry.
It integrates thermal shutdown (no hysteresis, activates at 150 °C) and current limiting (~450 mA), with ground current rising only modestly under load-enabling predictable power budgeting in thermally constrained PCB layouts using SOIC-8 with exposed pad thermal design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.00 V ±2% over −40 °C to +125 °C - ensures stable MCU core supply across automotive-grade temperature range |
| Max Output Current | 300 mA - sufficient for powering microcontrollers, ADCs, and RF transceivers in compact embedded systems |
| Dropout Voltage | 260 mV at 300 mA - enables regulation from 3.26 V input, critical for single-cell Li-ion or 3.3 V rail margining |
| Quiescent Current | 125 µA (ON), 0.3 µA (OFF) - extends battery life in always-on sensor nodes with periodic wake-up cycles |
| Line Regulation | 2.0 mV (typ.) - maintains tight output under varying input conditions, e.g., decaying battery voltage |
| Load Regulation | 5.0 mV (typ.) - minimizes output shift during dynamic load transitions like radio transmit bursts |
| Ripple Rejection | 65 dB (120 Hz) - suppresses switching noise from upstream DC/DC converters feeding the LDO input |
Pinout & Package
MC33375D-3.0R2G uses SOIC-8 (Case 751) package with standard pinout per onsemi datasheet Figure 1 and PIN CONNECTIONS table. Pin 1 is VIN, Pin 2 is GND, Pin 3 is VOUT, Pin 4 is ON/OFF, Pins 5–8 are GND (multiple ground connections for low-impedance return paths).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input supply connection; must be bypassed with ≥0.33 µF capacitor near pin for stability |
| 2, 5, 6, 7, 8 | GND | Common ground reference; multiple pins reduce ground impedance and improve PSRR |
| 3 | VOUT | Regulated 3.0 V output; requires ≥0.33 µF ceramic or tantalum capacitor to ground for stability |
| 4 | ON/OFF | Active-low enable control; pulled high internally via ~54 kΩ resistor; must not float |
Key Features
| Feature | Design Value |
|---|---|
| Logic-level ON/OFF control | Direct TTL/CMOS interface with no external pull-up required; enables system-level power sequencing |
| Stable with 0.33 µF output cap | Reduces BOM count and board space vs. typical LDOs requiring ≥10 µF ceramics |
| Internal thermal shutdown | 150 °C activation with no hysteresis-provides fail-safe protection during overload or poor heatsinking |
| Low dropout at light loads | 25 mV at 10 mA enables operation from weak or aging batteries while maintaining regulation |
| Pb-free SOIC-8 package | RoHS-compliant, industry-standard footprint compatible with automated SMT assembly and reflow profiles |
Applications
| Industrial Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data every 5 minutes via BLE. IC Role / Device Role / Timing Role: Primary 3.0 V supply for MCU, sensor IC, and BLE radio; ON/OFF pin synchronized with sleep/wake cycle. Use Value: 0.3 µA OFF-mode current extends 2× AA battery life beyond 2 years; 260 mV dropout allows operation down to 3.26 V input. | Use Scenario: Handheld ECG device with real-time analog front-end and display, powered by rechargeable Li-ion. IC Role / Device Role / Timing Role: Clean 3.0 V rail for precision ADC and op-amps; ON/OFF controlled by host processor during standby. Use Value: 65 dB ripple rejection prevents switching noise from DC/DC converter from corrupting µV-level ECG signals. |
| Automotive Body Control Module | Smart Meter Data Logger |
Use Scenario: Low-power door module monitoring switch status and controlling LEDs, operating across −40 °C to +105 °C ambient. IC Role / Device Role / Timing Role: Regulated 3.0 V supply for microcontroller and CAN transceiver; thermal shutdown protects against enclosure overheating. Use Value: ±2% output tolerance over full temperature range ensures reliable CAN communication timing margins. | Use Scenario: Utility meter logging consumption data hourly, powered by primary lithium thionyl chloride cell. IC Role / Device Role / Timing Role: Always-on 3.0 V regulator for RTC and memory backup; ON/OFF disabled permanently (pulled high). Use Value: 125 µA quiescent current minimizes annual self-discharge, preserving >95% battery capacity after 10 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCP1117ST30T3G | 800 mA output, 1.2 V dropout at 800 mA, TO-220/SOT-223 only - no SOIC-8 option | Higher current capability but larger thermal footprint; lacks ON/OFF control pin | Choose when >300 mA load or TO-220 heatsinking is required; avoid if board space or enable control is critical |
| MCP1700T-3002E/MB | 250 mA max, 6 µA quiescent current (ON), SOT-23-5 - smaller package, lower IQ, no thermal shutdown | Better for ultra-low-power coin-cell apps; no internal current/thermal protection | Prefer for sub-100 µA average current designs where external protection is acceptable |
Compared with NCP1117ST30T3G and MCP1700T-3002E/MB, MC33375D-3.0R2G uniquely balances 300 mA drive, SOIC-8 manufacturability, integrated ON/OFF control, and dual current/thermal protection-making it optimal for industrial and automotive modules needing robust, pin-controllable regulation.
Availability
MC33375D-3.0R2G is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, and automotive body control modules requiring stable component supply with long-term lifecycle support.
Supply support for MC33375D-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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MC33375 series was designed specifically for battery-powered and thermally constrained systems requiring micropower operation, low dropout, and integrated protection-targeting industrial automation, automotive sub-systems, and portable instrumentation.
FAQ
What is the maximum input voltage rating for MC33375D-3.0R2G?
The absolute maximum input voltage for MC33375D-3.0R2G is 13 Vdc, as specified in the Maximum Ratings table. Operation above this level risks permanent damage. For reliable 3.0 V output regulation, input should remain ≥3.26 V (3.0 V + 260 mV dropout) up to 12 V, with derating advised above 10 V due to thermal dissipation limits in SOIC-8 packaging.
Does MC33375D-3.0R2G require an external pull-up resistor on the ON/OFF pin?
No, MC33375D-3.0R2G includes an internal ~54 kΩ pull-up resistor on the ON/OFF pin, so it defaults to enabled when left unconnected. However, the datasheet explicitly warns against leaving the pin floating; it must be actively driven low (≤0.5 V) to disable or tied high (≥2.4 V) for guaranteed ON-state operation-especially in noisy environments.
Can MC33375D-3.0R2G operate stably with a 0.22 µF output capacitor?
No-MC33375D-3.0R2G requires a minimum 0.33 µF output capacitor for stability with 3.0 V output, as confirmed in the Applications Information section. While 5.0 V versions accept 0.22 µF, using undersized capacitance risks oscillation or poor transient response. A 1.0 µF X7R ceramic placed within 5 mm of pins 2/3/4 is recommended for optimal performance.
Is MC33375D-3.0R2G still in active production despite discontinuation notices in the datasheet?
Yes-MC33375D-3.0R2G remains orderable and supported per the official onsemi website and distributor stock records (Digi-Key, Mouser). Although the July 2025 datasheet revision notes "discontinued" status for several variants, MC33375D-3.0R2G is explicitly listed in the Ordering Information table with active 2500/reel packaging and no discontinuation flag.
What thermal resistance values apply to MC33375D-3.0R2G in SOIC-8 package?
Per the datasheet Maximum Ratings table, MC33375D-3.0R2G (SOIC-8, D suffix) has a thermal resistance of RJA = 160 °C/W and RJC = 25 °C/W at TA = 25 °C. These values assume standard JEDEC 2-layer board layout; actual performance improves with added copper area-e.g., 100 mm² of 2 oz. copper reduces RJA to ~90 °C/W per Figure 26.
MC33375D-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:
- 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-3.0R2G FAQ
1.How can I place an order for MC33375D-3.0R2G through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33375D-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 MC33375D-3.0R2G reliable?
The price and inventory of MC33375D-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 MC33375D-3.0R2G is usually 5 days.
3.What payment methods are accepted for MC33375D-3.0R2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33375D-3.0R2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33375D-3.0R2G?
MC33375D-3.0R2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33375D-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 MC33375D-3.0R2G?
For technical support, including MC33375D-3.0R2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33375D-3.0R2G requirements.
6.How does Aetrix verify that MC33375D-3.0R2G is sourced from the original manufacturer or authorized distributors?
All MC33375D-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 MC33375D-3.0R2G meets industry standards.
7.What is the process for return or replacement of MC33375D-3.0R2G?
All MC33375D-3.0R2G units undergo pre-shipment inspection (PSI). If there is an issue with MC33375D-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 MC33375D-3.0R2G part is unused and in its original packaging.
Return procedure for MC33375D-3.0R2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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