My Inquiry
My Account
onsemi MC33275DT-3.0RKG
- Part No.:
- MC33275DT-3.0RKG
- Manufacturer:
- onsemi
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
MC33275DT-3.0RKG.pdf
- Description:
- IC REG LINEAR 3V 300MA DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:2,169
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MC33275DT-3.0RKG from onsemi is a fixed-output 3.0 V, 300 mA micropower low-dropout (LDO) linear voltage regulator in DPAK-3 package. It delivers ultra-low dropout (260 mV at 300 mA), tight load regulation (±25 mV), and operates across −40°C to +125°C with internal thermal shutdown and current limiting. It is optimized for battery-powered handheld instruments and camcorders requiring extended runtime and stable low-noise supply.
For engineers reviewing the MC33275DT-3.0RKG datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at full load, quiescent current (125–200 µA), output stability with ≥0.33 µF ceramic capacitor, thermal resistance (92°C/W junction-to-air), and automotive-grade alternatives for AEC-Q100-compliant designs.
Technical Context
The MC33275DT-3.0RKG employs a PNP pass transistor architecture enabling low dropout operation without external bias rails. Its internal reference (1.23 V) and error amplifier deliver ±2% output tolerance over temperature (−40°C to +125°C) and line/load variations.
It integrates thermal shutdown (trip at 150°C, no hysteresis) and foldback current limiting (typ. 450 mA), with ground pin current rising only to ~6 mA at VIN = 12 V. Ripple rejection exceeds 65 dB at 120 Hz, and output noise is 46 µVrms (10 Hz–100 kHz, CL = 200 µF).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±2% over −40°C to +125°C - ensures stable MCU core or sensor rail under wide ambient and load variation. |
| Max Output Current | 300 mA continuous - supports moderate-power microcontrollers, displays, or analog front-ends without external boost. |
| Dropout Voltage | 260 mV at 300 mA - enables operation down to VIN = 3.26 V, critical for single-cell Li-ion or 3.3 V system brownout margin. |
| Quiescent Current | 125–200 µA (ON mode) - extends battery life in always-on or sleep-mode applications like portable medical devices. |
| Line Regulation | ≤10 mV (VIN = VO+1 V to 12 V) - maintains output accuracy despite input ripple or battery sag during pulse loads. |
| Load Regulation | ≤25 mV (0–250 mA) - minimizes voltage shift across dynamic load changes in audio codecs or RF transceivers. |
| Thermal Shutdown | 150°C junction trip - protects against sustained overload or poor PCB heatsinking without external circuitry. |
Pinout & Package
DPAK-3 (Case 369C) surface-mount package with exposed thermal pad; 6.10 × 6.54 × 2.28 mm footprint, 2.29 mm pitch; pins 1–3 are functional, pin 4 is collector/thermal tab (internally connected to GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (VIN) | Unregulated input supply; must be ≥3.26 V for full 300 mA output; bypass capacitor required within 2 cm. |
| 2 | Ground (GND) | Power and signal reference; connects internally to exposed thermal pad; requires low-impedance PCB copper pour. |
| 3 | Output (VOUT) | Regulated 3.0 V supply; stable with ≥0.33 µF ceramic capacitor placed adjacent to pin; ESR <1 Ω recommended. |
| 4 | Thermal Pad / Collector | Internally tied to GND; primary heat path to PCB; must be soldered to ≥1 cm² 2 oz copper area for RJA = 92°C/W rating. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 25 mV at 10 mA load - enables operation from near-dead batteries in emergency lighting or data loggers. |
| Stable with minimal capacitance | 0.33 µF ceramic output cap - reduces BOM count and board space vs. traditional LDOs requiring ≥10 µF tantalum. |
| Low-noise regulation | 46 µVrms output noise (10 Hz–100 kHz) - suitable for precision ADC references or low-phase-noise clock supplies. |
| Integrated protection | Current limit (450 mA typ.) + thermal shutdown (150°C) - eliminates need for external fuses or thermal sensors in cost-sensitive designs. |
| Pb-free & RoHS compliant | "G" suffix indicates lead-free DPAK package - meets global environmental compliance without derating or requalification. |
Applications
| Portable Medical Sensors | Industrial Handheld Scanners |
|---|---|
Use Scenario: Battery-powered pulse oximeter with analog front-end and BLE radio operating 24/7 on two AA cells. IC Role / Device Role / Timing Role: Primary 3.0 V supply for op-amps, ADC, and BLE SoC; regulates down from 3.0–3.6 V battery range. Use Value: 260 mV dropout preserves >15 min runtime below 3.3 V; 200 µA IQ extends shelf life beyond 2 years in standby. |
Use Scenario: Rugged barcode scanner used in warehouse environments with frequent drop impact and wide temperature swings. IC Role / Device Role / Timing Role: Main power rail for CMOS image sensor, laser driver, and ARM Cortex-M4 MCU. Use Value: −40°C to +125°C operation ensures reliability in unheated loading docks; thermal shutdown prevents field failure during extended scanning bursts. |
| Camcorder Image Stabilization | Automotive Cabin Camera Module |
Use Scenario: Consumer camcorder requiring silent, jitter-free power to gyroscopes and MEMS actuators during video capture. IC Role / Device Role / Timing Role: Low-noise 3.0 V source for motion sensor interface and image stabilization ASIC. Use Value: 46 µVrms noise avoids introducing visible banding in stabilized footage; 65 dB ripple rejection suppresses switching noise from main DC/DC. |
Use Scenario: AEC-Q100-compliant rearview camera module mounted near vehicle exhaust with ambient up to 105°C. IC Role / Device Role / Timing Role: Secondary 3.0 V rail for image signal processor and serializer ICs downstream of main 5 V supply. Use Value: NCV33275ST-3.0T3G is automotive-qualified alternative; MC33275DT-3.0RKG supports prototyping with same electrical specs and DPAK thermal performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV33275DT-3.0RKG | Automotive-grade variant; identical electrical specs but qualified to AEC-Q100 Grade 1 (−40°C to +125°C) and PPAP-capable. | Required for OEM automotive cabin modules, ADAS sensors, or infotainment peripherals needing traceable qualification. | Select when automotive qualification, change control, or site-specific manufacturing is mandated - same pinout, thermal profile, and layout. |
| MCP1700-3002E/MB | Microchip 3.0 V LDO; 250 mA max, 1.6 µA IQ, SOT-23 package; higher PSRR (70 dB @ 1 kHz) but lower current and no thermal shutdown. | Suitable for ultra-low-power IoT endpoints (e.g., wireless sensor nodes), not for 300 mA or thermally stressed environments. | Choose only for sub-100 µA systems where size and quiescent current outweigh robustness needs - not a direct replacement due to current and protection gaps. |
Compared with NCV33275DT-3.0RKG, the MC33275DT-3.0RKG lacks automotive qualification but matches all electrical and thermal specs for industrial prototypes; versus MCP1700-3002E/MB, it delivers 20% higher current and integrated thermal/current protection at the cost of higher IQ - critical for ruggedized portable equipment.
Availability
MC33275DT-3.0RKG is available at Aetrix Electronics and suitable for battery-powered consumer electronics, handheld instrumentation, and industrial imaging systems requiring stable component supply with consistent parametric performance and long-term manufacturability.
Supply support for MC33275DT-3.0RKG 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, with leadership in power management, analog, and sensing technologies.
The MC33275 series belongs to onsemi's precision linear regulator product line, designed specifically for micropower, low-dropout operation in space-constrained, battery-dependent applications across consumer, industrial, and automotive markets.
FAQ
What is the minimum input voltage required for MC33275DT-3.0RKG to maintain regulation at 300 mA?
The MC33275DT-3.0RKG requires a minimum input voltage of 3.26 V to sustain 3.0 V output at 300 mA load, based on its maximum dropout voltage of 260 mV. Below this, output voltage drops linearly; design margin should include worst-case temperature and tolerance - e.g., use VIN ≥ 3.35 V for reliable operation across −40°C to +125°C.
Can MC33275DT-3.0RKG operate with a 0.22 µF output capacitor?
No - MC33275DT-3.0RKG requires ≥0.33 µF for 3.0 V output stability per the datasheet. While 5.0 V versions accept 0.22 µF, the 3.0 V variant mandates 0.33 µF minimum (aluminum, tantalum, or multilayer ceramic). Using 0.22 µF risks oscillation or poor transient response, especially with loads >100 mA.
Is the thermal pad of MC33275DT-3.0RKG electrically isolated?
No - the exposed thermal pad (pin 4) of MC33275DT-3.0RKG is internally connected to GND. It must be soldered to a PCB copper pour tied to the system ground plane to achieve the specified 92°C/W junction-to-air thermal resistance. Floating or insulated mounting degrades thermal performance and risks thermal shutdown.
Does MC33275DT-3.0RKG support reverse polarity protection?
No - MC33275DT-3.0RKG has no built-in reverse-voltage protection. Applying negative voltage to VIN or VOUT can damage the device. External protection (e.g., series Schottky diode on input or MOSFET-based ideal diode) is required in systems prone to battery misinsertion or back-driving.
How does the thermal shutdown behavior of MC33275DT-3.0RKG affect system operation?
MC33275DT-3.0RKG thermal shutdown activates at ~150°C with no hysteresis, causing output to toggle on/off as junction temperature crosses threshold - appearing as output oscillation. This protects the die but may disrupt connected logic; proper heatsinking (≥1 cm² 2 oz copper) and load derating above 85°C ambient are essential to avoid cycling.
MC33275DT-3.0RKG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- 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:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
MC33275DT-3.0RKG FAQ
1.How can I place an order for MC33275DT-3.0RKG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33275DT-3.0RKG 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 MC33275DT-3.0RKG reliable?
The price and inventory of MC33275DT-3.0RKG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33275DT-3.0RKG is usually 5 days.
3.What payment methods are accepted for MC33275DT-3.0RKG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33275DT-3.0RKG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33275DT-3.0RKG?
MC33275DT-3.0RKG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33275DT-3.0RKG 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 MC33275DT-3.0RKG?
For technical support, including MC33275DT-3.0RKG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33275DT-3.0RKG requirements.
6.How does Aetrix verify that MC33275DT-3.0RKG is sourced from the original manufacturer or authorized distributors?
All MC33275DT-3.0RKG 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 MC33275DT-3.0RKG meets industry standards.
7.What is the process for return or replacement of MC33275DT-3.0RKG?
All MC33275DT-3.0RKG units undergo pre-shipment inspection (PSI). If there is an issue with MC33275DT-3.0RKG, 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 MC33275DT-3.0RKG part is unused and in its original packaging.
Return procedure for MC33275DT-3.0RKG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC33275DT-3.0RKG 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…
