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onsemi MC33375D-5.0G
- Part No.:
- MC33375D-5.0G
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC33375D-5.0G.pdf
- Description:
- IC REG LINEAR 5V 300MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:116
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Product details
Overview
MC33375D-5.0G from onsemi is a fixed-output 5.0 V, 300 mA micropower low-dropout linear voltage regulator in SOIC-8 package with logic-level ON/OFF control, 260 mV dropout at full load, ±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-5.0G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 300 mA, quiescent current in ON/OFF modes, stability with minimal 0.22 µF output capacitance, and SOIC-8 thermal performance under continuous 125 °C ambient operation.
Technical Context
The MC33375D-5.0G employs a PNP pass transistor architecture enabling ultra-low dropout (25 mV at 10 mA; 260 mV at 300 mA) and sub-1 µA shutdown current. Its internal reference is trimmed to 1.23 V, and regulation is maintained via feedback from the output to an error amplifier driving the pass element.
Thermal protection activates at 150 °C junction temperature without hysteresis, causing output oscillation until cooling occurs; current limiting caps output at 450 mA. The ON/OFF pin accepts TTL/CMOS-compatible logic levels (VCTRL ≥ 2.4 V for ON; ≤ 0.5 V for OFF), with no floating-pin tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.00 V ±2% over −40 °C to +125 °C - ensures stable MCU core supply across automotive-grade temperature range |
| Max Output Current | 300 mA - sufficient to power microcontrollers, ADCs, and RF transceivers without external boost stages |
| Dropout Voltage | 260 mV at 300 mA - enables operation from single Li-ion (3.0–3.6 V) or two alkaline cells (up to 3.2 V) with regulated 5.0 V output |
| Quiescent Current | 125 µA (ON), 0.3 µA (OFF) - extends battery life in always-on sensor nodes and sleep-mode IoT endpoints |
| Line Regulation | 10 mV max (Vin = VO+1 V to 12 V) - maintains tight output under varying input conditions such as unregulated wall adapters |
| Load Regulation | 25 mV max (0–250 mA) - prevents voltage sag during burst-mode wireless transmission or motor startup |
| Ripple Rejection | 65 dB @ 120 Hz - suppresses AC line noise and switching regulator ripple in mixed-signal systems |
| Stability Capacitance | 0.22 µF min (ceramic/tantalum) - allows compact layout with low-ESR capacitors; no external compensation required |
Pinout & Package
MC33375D-5.0G is housed in SOIC-8 (Case 751, Pb-free), with exposed pad not electrically connected. Thermal resistance is RJA = 160 °C/W (no PCB copper), improving to 25 °C/W with 1.27 mm² 2-oz copper pour per Figure 26.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (Vin) | Main DC input supply connection; requires local 0.33 µF bypass capacitor for transient immunity |
| 2 | Ground (GND) | Analog ground reference; must be low-impedance star point shared with output capacitor negative terminal |
| 3 | Output (Vout) | Regulated 5.0 V output; connects directly to load and output capacitor (min 0.22 µF) |
| 4 | ON/OFF Control | Active-high logic input; ≥2.4 V enables regulation, ≤0.5 V disables output and reduces IQ to 0.3 µA |
| 5 | Ground (GND) | Second ground terminal - internally tied to Pin 2; improves thermal conduction and reduces ground bounce |
| 6 | Ground (GND) | Third ground terminal - internally tied to Pins 2 and 5; enhances thermal dissipation in high-current operation |
| 7 | Ground (GND) | Fourth ground terminal - internally tied to Pins 2/5/6; provides lowest possible ground impedance path |
| 8 | No Connect (N/C) | Not bonded; left unconnected - no routing or pull-up/pull-down required |
Key Features
| Feature | Design Value |
|---|---|
| Logic-Level ON/OFF Control | Direct interface with 3.3 V or 5 V microcontrollers - no level-shifting circuitry needed |
| Ultra-Low Dropout | 25 mV at 10 mA enables use in energy-harvesting systems where input voltage may dip below 5.025 V |
| Internal Thermal Shutdown | 150 °C trip point protects against sustained overload or poor heatsinking without external circuitry |
| Tight Load Regulation | 5 mV typical variation across 0–250 mA load - eliminates need for post-regulation LDO in precision analog chains |
| Pb-Free SOIC-8 Package | RoHS-compliant, JEDEC-standard footprint - drop-in replacement for legacy 5 V regulators in existing PCB designs |
| Stable with Low-ESR Capacitors | Validated with 0.22 µF ceramic - supports miniaturized layouts using 0402/0603 MLCCs without instability risk |
Applications
| Industrial Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data every 30 seconds via BLE. IC Role / Device Role / Timing Role: Primary 5.0 V supply for MCU, BLE SoC, and analog front-end; enabled only during active measurement/transmit cycles. Use Value: 0.3 µA shutdown current extends 2×AA battery life beyond 5 years; 260 mV dropout preserves regulation down to 4.74 V input. | Use Scenario: Handheld ECG device operating from rechargeable Li-poly battery with sleep mode between readings. IC Role / Device Role / Timing Role: Clean 5.0 V rail for op-amp signal conditioning and ADC reference; disabled during standby to minimize leakage. Use Value: 65 dB ripple rejection isolates analog signal path from noisy digital domains; ±2% tolerance meets IEC 60601 accuracy requirements. |
| Automotive Body Controller | Smart Home Hub Power Rail |
Use Scenario: Door module controlling window lift, mirror fold, and interior lighting in 12 V vehicle system. IC Role / Device Role / Timing Role: Secondary 5.0 V regulator for microcontroller and CAN transceiver; ON/OFF synchronized with ignition state. Use Value: −40 °C to +125 °C operation survives engine bay thermal cycling; internal current limit prevents latch-up during short-circuit faults. | Use Scenario: Wi-Fi/Zigbee hub powered by 9 V wall adapter, supporting always-on voice assistant and peripheral USB ports. IC Role / Device Role / Timing Role: Local 5.0 V source for USB 2.0 PHY and audio codec; decouples digital noise from sensitive analog audio paths. Use Value: 10 mV line regulation rejects ripple from unregulated wall adapter; 0.22 µF stability enables cost-effective BOM with standard MLCCs. |
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 |
|---|---|---|---|
| NCV33375D-5.0R2G | AEC-Q100 qualified, automotive-grade variant with same electrical specs and SOIC-8 package | Required for automotive body electronics subject to PPAP and zero-defect reliability requirements | Select NCV33375D-5.0R2G when automotive qualification, extended temperature validation, or change-controlled manufacturing is mandatory |
| MCP1703T-5002E/MB | Microchip 500 mA LDO with 600 mV dropout at full load; 2.5 µA quiescent current in ON mode | Higher current capability but less suitable for ultra-low-power battery applications due to higher IQ | Choose MCP1703T-5002E/MB only if >300 mA load current or lower-cost SOIC-8 sourcing is prioritized over micropower efficiency |
Compared with MC33375D-5.0G, the NCV33375D-5.0R2G adds automotive qualification without trade-offs in performance or footprint, while the MCP1703T-5002E/MB trades 0.3 µA shutdown current and 260 mV dropout for higher output current - making MC33375D-5.0G optimal for long-life battery systems where <300 mA suffices.
Availability
MC33375D-5.0G is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, and automotive body controllers requiring stable component supply with guaranteed long-term availability and traceable Pb-free sourcing.
Supply support for MC33375D-5.0G 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 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 micropower, low-dropout regulation in battery-constrained environments - emphasizing ultra-low quiescent current, wide temperature operation, and robust internal protection without external components.
FAQ
What is the maximum input voltage rating for MC33375D-5.0G?
The MC33375D-5.0G has an absolute maximum input voltage of 13 VDC. Operation above this level risks permanent damage due to internal junction breakdown. For reliable 5.0 V output, Vin should remain within VO + 1 V (6.0 V) to 12 V per datasheet test conditions - ensuring stable regulation and thermal margin under full 300 mA load.
Does MC33375D-5.0G require an external output capacitor, and what value is recommended?
Yes, MC33375D-5.0G requires an external output capacitor for stability. For the 5.0 V version, a minimum of 0.22 µF ceramic or tantalum capacitor is specified. Larger values (e.g., 1.0 µF) improve transient response and reduce output noise, but are not required for basic stability. Mounting must be within 2 cm of the IC pins to maintain phase margin.
Can MC33375D-5.0G be used in automotive applications?
The standard MC33375D-5.0G is not AEC-Q100 qualified. For automotive use, the pin- and function-compatible NCV33375D-5.0R2G variant is specified - it undergoes additional stress testing, lot traceability, and PPAP documentation. Both share identical electrical characteristics, but only the NCV prefix part meets automotive reliability standards.
What happens when the ON/OFF pin of MC33375D-5.0G is left floating?
The ON/OFF pin of MC33375D-5.0G must never be left floating. An undefined logic state may cause erratic enable/disable behavior, increased quiescent current, or output oscillation. The datasheet mandates pulling the pin high (≥2.4 V) via resistor or microcontroller GPIO to ensure regulation, or low (≤0.5 V) to guarantee shutdown and 0.3 µA IQ.
How does thermal shutdown behave in MC33375D-5.0G during sustained overload?
MC33375D-5.0G 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 to prevent permanent damage. Proper PCB copper area (per Figure 26) and derating above 85 °C ambient are essential to avoid repeated cycling.
MC33375D-5.0G 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:
- 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-5.0G FAQ
1.How can I place an order for MC33375D-5.0G through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33375D-5.0G 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-5.0G reliable?
The price and inventory of MC33375D-5.0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33375D-5.0G is usually 5 days.
3.What payment methods are accepted for MC33375D-5.0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33375D-5.0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33375D-5.0G?
MC33375D-5.0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33375D-5.0G 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-5.0G?
For technical support, including MC33375D-5.0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33375D-5.0G requirements.
6.How does Aetrix verify that MC33375D-5.0G is sourced from the original manufacturer or authorized distributors?
All MC33375D-5.0G 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-5.0G meets industry standards.
7.What is the process for return or replacement of MC33375D-5.0G?
All MC33375D-5.0G units undergo pre-shipment inspection (PSI). If there is an issue with MC33375D-5.0G, 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-5.0G part is unused and in its original packaging.
Return procedure for MC33375D-5.0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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