My Inquiry
My Account
onsemi MC33375ST-3.0T3G
- Part No.:
- MC33375ST-3.0T3G
- Manufacturer:
- onsemi
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
MC33375ST-3.0T3G.pdf
- Description:
- IC REG LINEAR 3V 300MA SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:2,484
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MC33375ST-3.0T3G 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 SOT-223 package. It features logic-level ON/OFF control, 260 mV dropout at full load, 125 µA quiescent current in active mode, and internal thermal/current limiting-ideal for battery-powered industrial sensors and portable instrumentation requiring stable 3.0 V rail with extended runtime.
For engineers reviewing the MC33375ST-3.0T3G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 300 mA, ON/OFF control threshold compatibility, thermal shutdown behavior at 150 °C, and minimum 0.33 µF output capacitance stability requirement for 3.0 V operation.
Technical Context
The MC33375ST-3.0T3G employs a PNP pass transistor architecture enabling ultra-low dropout (25 mV at 10 mA; 260 mV at 300 mA) and tight line/load regulation (≤10 mV and ≤25 mV respectively). Its ON/OFF control pin accepts TTL/CMOS-compatible logic levels (VCTRL ≥ 2.4 V for ON; ≤ 0.5 V for OFF), directly disabling the output without external circuitry.
Thermal protection activates at 150 °C junction temperature with no hysteresis, causing output oscillation until cooling occurs. Current limiting caps output at ~450 mA, independent of input voltage, and operates alongside thermal shutdown to prevent device damage under overload or high ambient conditions.
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 supply across automotive/industrial temperature range. |
| Max Output Current | 300 mA - sufficient to power microcontrollers, ADCs, and RF transceivers in compact embedded systems. |
| Dropout Voltage | 260 mV at 300 mA - enables operation 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 monitoring devices and enables deep-sleep modes. |
| Line Regulation | ≤10 mV (Vin = VO+1 V to 12 V) - maintains output accuracy despite input ripple or battery sag during discharge. |
| Load Regulation | ≤25 mV (0–250 mA) - prevents voltage droop during dynamic load steps in mixed-signal circuits. |
| Ripple Rejection | ≥65 dB at 120 Hz - suppresses AC noise from switching supplies or rectified mains inputs. |
Pinout & Package
SOT-223 (Case 318E), surface-mount package with exposed thermal pad (Pin 2) for enhanced heat dissipation. Thermal resistance RJA = 245 °C/W (standard PCB), reduced to <100 °C/W with ≥10 mm² copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (Vin) | Unregulated input supply; must be ≥ VO + dropout voltage (≥3.26 V for 300 mA load). |
| 2 | Ground (GND) | Power ground reference; connects to thermal pad for optimal thermal performance. |
| 3 | Output (Vout) | Regulated 3.0 V output; requires ≥0.33 µF ceramic or tantalum capacitor to ground for stability. |
| 4 | ON/OFF Control | Active-high logic input; ≥2.4 V enables regulator, ≤0.5 V disables output (0.3 V max for 1.8 V variant). |
Key Features
| Feature | Design Value |
|---|---|
| Logic-Level ON/OFF Control | Direct interface with 3.3 V or 5 V microcontrollers-no level-shifting required to enable/disable power rail. |
| Stable with 0.33 µF Output Cap | Reduces BOM cost and board space vs. LDOs requiring ≥10 µF; compatible with small-case ceramic capacitors. |
| Internal Thermal Shutdown | Self-protects against sustained overload or poor heatsinking-output cycles on/off at 150 °C without latch-up. |
| Low Dropout at Full Load | 260 mV @ 300 mA enables use with marginal input sources (e.g., aging batteries or post-LDO rails). |
| Pb-Free & AEC-Q100 Capable | Meets automotive qualification requirements (NCV variants); ST suffix indicates SOT-223 Pb-free packaging. |
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 regulator for MCU, sensor IC, and RF transceiver. Use Value: 0.3 µA shutdown current extends 2xAA alkaline battery life beyond 5 years in sleep mode. | Use Scenario: Handheld ECG device with OLED display and analog front-end operating from two AAA cells. IC Role / Device Role / Timing Role: Main 3.0 V supply for signal chain and display driver, enabled only during measurement. Use Value: 260 mV dropout allows full 300 mA burst current during display update even as battery drops to 3.26 V. |
| Automotive Body Control Module | Smart Home Hub Controller |
Use Scenario: Low-power door module monitoring switch status and controlling LED indicators. IC Role / Device Role / Timing Role: Secondary regulated supply derived from 5 V vehicle bus, powering MCU and I/O drivers. Use Value: AEC-Q100-capable thermal shutdown (150 °C) ensures reliability in enclosed cabin environments up to 85 °C ambient. | Use Scenario: Wi-Fi-connected thermostat using standby power for real-time clock and wake-on-LAN. IC Role / Device Role / Timing Role: Always-on 3.0 V rail for RTC, memory backup, and low-power radio wake circuitry. Use Value: Tight 2% output tolerance over −40 °C to +125 °C guarantees accurate timing and sensor biasing across seasonal extremes. |
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 | Higher dropout (1.2 V typical at 800 mA), higher IQ (6 mA), SO-8/SOT-223 dual package option | Requires ≥4.2 V input for 300 mA load; less suitable for single-cell Li-ion systems | Select when higher output current (800 mA) is needed and input headroom permits. |
| MCP1700T-3002E/MB | Lower IQ (1.6 µA), lower current (250 mA), SOT-23 package; no ON/OFF pin | Lacks enable control-requires external FET for power gating; limited thermal capability | Choose for ultra-low-power, space-constrained designs where enable functionality is not required. |
Compared with NCP1117ST30T3G and MCP1700T-3002E/MB, the MC33375ST-3.0T3G uniquely balances 300 mA output, 260 mV dropout, 125 µA quiescent current, and integrated ON/OFF control in SOT-223-making it optimal for battery-powered systems needing both efficiency and controllability.
Availability
MC33375ST-3.0T3G is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, automotive body control modules, and smart home hub controllers requiring stable component supply with long-term lifecycle support.
Supply support for MC33375ST-3.0T3G 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, sensing, and connectivity solutions for automotive, industrial, and cloud power applications.
The MC33375 series was designed specifically for battery-powered and thermally constrained applications demanding micropower operation, low dropout, and robust protection-targeting industrial automation, automotive sub-systems, and portable electronics.
FAQ
What is the minimum input voltage required for MC33375ST-3.0T3G to maintain regulation at 300 mA?
The MC33375ST-3.0T3G requires a minimum input voltage of 3.26 V to maintain 3.0 V output regulation at 300 mA load, based on its maximum dropout voltage of 260 mV specified in the datasheet. Below this, output voltage collapses linearly with input reduction. Input must also remain within absolute maximum rating of 13 V.
Does MC33375ST-3.0T3G require an external pull-up resistor on the ON/OFF pin?
Yes, the ON/OFF pin of MC33375ST-3.0T3G must not be left floating. A pull-up resistor (typically 10–100 kΩ) to Vin or system VDD is required to ensure reliable turn-on. The pin draws negligible current (<1 µA), so resistor value has minimal impact on power consumption.
Can MC33375ST-3.0T3G operate stably with a 0.22 µF output capacitor?
No-MC33375ST-3.0T3G requires ≥0.33 µF output capacitance for guaranteed stability per the datasheet. While 0.22 µF may work in some cases, it falls outside the validated range and risks oscillation, especially under load transients or temperature extremes. Use 0.33 µF or larger ceramic/tantalum capacitor.
What happens to the output of MC33375ST-3.0T3G during thermal shutdown?
During thermal shutdown, the MC33375ST-3.0T3G output disables completely (drops near 0 V) when junction temperature reaches ~150 °C. As the die cools, the output re-enables-causing visible oscillation if overload persists. This cycling continues until thermal equilibrium is reached below the threshold, with no hysteresis or latch behavior.
Is MC33375ST-3.0T3G pin-compatible with other SOT-223 LDOs like MIC5205-3.0YM5?
No-MC33375ST-3.0T3G uses Pin 1=Vin, Pin 2=GND, Pin 3=Vout, Pin 4=ON/OFF, whereas MIC5205-3.0YM5 uses Pin 1=GND, Pin 2=Vin, Pin 3=Vout, Pin 4=EN. Pin assignments differ; direct replacement requires PCB redesign. Always verify pinout before substitution.
MC33375ST-3.0T3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- 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:
- SOT-223 (TO-261)
MC33375ST-3.0T3G FAQ
1.How can I place an order for MC33375ST-3.0T3G through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33375ST-3.0T3G 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 MC33375ST-3.0T3G reliable?
The price and inventory of MC33375ST-3.0T3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33375ST-3.0T3G is usually 5 days.
3.What payment methods are accepted for MC33375ST-3.0T3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33375ST-3.0T3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33375ST-3.0T3G?
MC33375ST-3.0T3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33375ST-3.0T3G 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 MC33375ST-3.0T3G?
For technical support, including MC33375ST-3.0T3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33375ST-3.0T3G requirements.
6.How does Aetrix verify that MC33375ST-3.0T3G is sourced from the original manufacturer or authorized distributors?
All MC33375ST-3.0T3G 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 MC33375ST-3.0T3G meets industry standards.
7.What is the process for return or replacement of MC33375ST-3.0T3G?
All MC33375ST-3.0T3G units undergo pre-shipment inspection (PSI). If there is an issue with MC33375ST-3.0T3G, 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 MC33375ST-3.0T3G part is unused and in its original packaging.
Return procedure for MC33375ST-3.0T3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC33375ST-3.0T3G Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
