My Inquiry
My Account
onsemi MC33275DT-5.0RK
- Part No.:
- MC33275DT-5.0RK
- Manufacturer:
- onsemi
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
MC33275DT-5.0RK.pdf
- Description:
- IC REG LINEAR 5V 300MA DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:1,459
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MC33275DT-5.0RK from onsemi is a fixed-output 5.0 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/line regulation (<25 mV), and operates over −40°C to +125°C. It is used in battery-powered handheld instruments and camcorders to extend runtime while maintaining stable rail integrity under dynamic load.
For engineers reviewing the MC33275DT-5.0RK datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at full load, quiescent current (125 µA typ), thermal shutdown threshold (150°C), output stability with ≥0.22 µF ceramic capacitor, and DPAK thermal resistance (92°C/W junction-to-air).
Technical Context
The MC33275DT-5.0RK employs a PNP pass transistor architecture enabling low dropout operation without requiring external compensation. Its internal reference (1.23 V) feeds an error amplifier driving the pass element, with integrated current limiting (450 mA typ) and thermal shutdown activated at 150°C.
It achieves stability with minimal output capacitance (0.22 µF for 5.0 V output) due to inherent phase margin design and does not require ESR-tuned capacitors. The device draws only 125 µA quiescent current in normal operation but increases to 1500–2000 µA when the pass transistor saturates near dropout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.00 V ±2% over −40°C to +125°C - ensures reliable logic-level supply for microcontrollers and sensors across automotive-grade temperature range. |
| Max Output Current | 300 mA - supports moderate-power peripherals such as LCD drivers, RF modules, or sensor signal chains without external boost. |
| Dropout Voltage | 260 mV at 300 mA - enables operation from 5.26 V input, critical for single-cell Li-ion or 2-cell alkaline systems where headroom is constrained. |
| Quiescent Current | 125 µA typical at 0 mA load - minimizes standby power loss in always-on battery applications like remote controls or IoT edge nodes. |
| Ripple Rejection | 65 dB at 120 Hz - suppresses AC line ripple and switching noise from upstream DC/DC converters, preserving analog signal integrity. |
| Thermal Shutdown | 150°C activation - protects against sustained overload or poor PCB heatsinking; no hysteresis causes cycling until junction cools below threshold. |
| Stability Capacitor | 0.22 µF ceramic minimum - reduces BOM count and board space vs. traditional LDOs requiring >1 µF tantalum or aluminum electrolytic. |
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; designed for high thermal efficiency on standard FR-4 PCBs with ≥1.0 oz copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (Vin) | Main power input; accepts up to 13 V DC; requires local 0.33 µF bypass capacitor placed adjacent to pin for transient immunity. |
| 2 | Ground (GND) | Power ground reference; must be connected directly to low-impedance ground plane; ties internally to exposed thermal pad. |
| 3 | Output (Vout) | Regulated 5.0 V output; connects to load; output capacitor (≥0.22 µF ceramic) must be placed within 5 mm for stability. |
| 4 | Ground (GND) | Second ground terminal; electrically tied to Pin 2 internally; improves thermal conduction and reduces ground loop inductance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low Dropout | 25 mV at 10 mA load - enables regulation from inputs as low as 5.025 V, extending usable battery voltage range in portable devices. |
| Tight Load Regulation | ≤25 mV change from 0–250 mA - maintains consistent 5.0 V rail during processor wake/sleep transitions or display backlight modulation. |
| Internal Protection | Current limit (450 mA) + thermal shutdown (150°C) - eliminates need for external fuses or thermal sensors in cost-sensitive consumer designs. |
| Pb-Free & AEC-Q100 Capable | RoHS-compliant DPAK package; NCV variant qualified for automotive - supports industrial and automotive-grade reliability requirements without redesign. |
| Low-Noise Operation | 46 µVrms output noise (10 Hz–100 kHz, 200 µF Cout) - suitable for powering precision ADCs, op-amps, or RF front-ends without additional filtering. |
Applications
| Hand-Held Medical Meter | Industrial Data Logger |
|---|---|
|
Use Scenario: Portable blood glucose monitor powered by two AA alkaline cells (1.8–3.2 V per cell), requiring stable 5.0 V for MCU and analog front-end. IC Role / Device Role / Timing Role: Primary 5.0 V LDO regulator supplying power to 32-bit ARM Cortex-M microcontroller and 16-bit SAR ADC. Use Value: 260 mV dropout allows operation down to 5.26 V input - extends usable battery life by ~18% compared to 400 mV-dropout alternatives. |
Use Scenario: Ruggedized environmental sensor node deployed in remote locations, operating continuously on lithium-thionyl chloride primary battery. IC Role / Device Role / Timing Role: Low-quiescent-power 5.0 V regulator powering real-time clock, flash memory, and RS-485 transceiver during sleep/wake cycles. Use Value: 125 µA IQ enables >10-year battery life at 10-second wake intervals; thermal shutdown prevents field failure under enclosure overheating. |
| Camcorder Power Management | Automotive Cabin Camera Module |
|
Use Scenario: Consumer camcorder using single-cell Li-ion (2.7–4.2 V) with buck-boost pre-regulator feeding 5.0 V rail for image sensor and video encoder. IC Role / Device Role / Timing Role: Post-regulator LDO cleaning up switched-mode output noise before sensitive analog video circuitry. Use Value: 65 dB ripple rejection attenuates 100 kHz switching artifacts; 0.22 µF ceramic stability simplifies layout and avoids tantalum reliability concerns. |
Use Scenario: AEC-Q100-compliant rear-view camera module powered from vehicle 12 V bus via discrete step-down stage. IC Role / Device Role / Timing Role: Final-stage 5.0 V regulator delivering clean, fault-protected power to CMOS image sensor and ISP ASIC. Use Value: DPAK thermal performance (92°C/W) sustains 300 mA at 85°C ambient without heatsink; NCV33275ST-5.0T3G is direct automotive-grade alternative. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCP1117ST50T3G | Higher dropout (1.1 V at 1 A), higher IQ (6 mA), SO-8 package - less efficient at low VIN, larger thermal footprint. | Targeted at higher-current (up to 1 A), non-battery applications with ample input headroom. | Select when >300 mA load or lower-cost SO-8 assembly is prioritized over battery runtime and thermal density. |
| TPS7A2050PDBVR | Lower IQ (6.5 µA), smaller X2SON-5 package, but requires ≥0.1 µF ceramic and has 170 mV dropout at 300 mA - superior quiescent performance, tighter footprint. | Better suited for ultra-low-power wearables or space-constrained modules where <100 µA IQ is mandatory. | Choose when minimizing standby current dominates over legacy DPAK compatibility or existing thermal layout. |
Compared with NCP1117ST50T3G, MC33275DT-5.0RK offers 4.2× lower dropout and 48× lower quiescent current - critical for battery life extension. Versus TPS7A2050PDBVR, it trades 10 µA IQ for proven DPAK thermal robustness and broader industrial temperature support (−40°C to +125°C vs. −40°C to +125°C, but with higher thermal derating).
Availability
MC33275DT-5.0RK is available at Aetrix Electronics and suitable for battery-powered consumer electronics, handheld instrumentation, and industrial data loggers requiring stable component supply with long-term manufacturability and automotive-qualified alternatives.
Supply support for MC33275DT-5.0RK 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 was engineered for micropower, wide-temperature, low-dropout regulation in portable and harsh-environment applications - emphasizing battery longevity, thermal resilience, and simplified external component count.
FAQ
What is the minimum input voltage required for MC33275DT-5.0RK to maintain regulation?
The MC33275DT-5.0RK requires a minimum input voltage of 5.26 V to sustain 5.0 V output at 300 mA load, based on its 260 mV dropout specification. At lighter loads (e.g., 10 mA), input can drop to 5.025 V (25 mV dropout). Input below these thresholds causes output to collapse linearly with VIN.
Can MC33275DT-5.0RK operate with a 0.1 µF ceramic output capacitor?
No - MC33275DT-5.0RK requires a minimum of 0.22 µF ceramic output capacitance for stability at 5.0 V output. Using 0.1 µF risks oscillation or poor transient response. The datasheet explicitly specifies 0.22 µF as the lower bound for 5.0 V versions, unlike 2.5–3.3 V variants which require ≥0.33 µF.
Does MC33275DT-5.0RK have built-in reverse polarity protection?
No - MC33275DT-5.0RK lacks internal reverse-voltage protection. Applying reversed input voltage may damage the device. External protection (e.g., series Schottky diode or MOSFET-based ideal diode) is required if system-level reverse polarity exposure is possible.
How does thermal shutdown behave in MC33275DT-5.0RK during sustained overload?
When junction temperature reaches 150°C, MC33275DT-5.0RK disables output with no hysteresis. As temperature drops, output re-enables - causing visible output oscillation under constant overload. This cycling continues until ambient or PCB thermal design reduces power dissipation enough to sustain sub-threshold operation.
Is MC33275DT-5.0RK pin-compatible with other packages in the MC33275 family?
No - MC33275DT-5.0RK uses DPAK-3 (3-pin input/GND/Vout + auxiliary GND), while MC33275D-5.0R2G (SOIC-8) and MC33275ST-5.0T3G (SOT-223) have different pin counts, layouts, and terminal assignments. PCB redesign is required when changing packages; only electrical functionality is equivalent.
MC33275DT-5.0RK 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):
- 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:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
MC33275DT-5.0RK FAQ
1.How can I place an order for MC33275DT-5.0RK through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33275DT-5.0RK 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-5.0RK reliable?
The price and inventory of MC33275DT-5.0RK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33275DT-5.0RK is usually 5 days.
3.What payment methods are accepted for MC33275DT-5.0RK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33275DT-5.0RK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33275DT-5.0RK?
MC33275DT-5.0RK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33275DT-5.0RK 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-5.0RK?
For technical support, including MC33275DT-5.0RK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33275DT-5.0RK requirements.
6.How does Aetrix verify that MC33275DT-5.0RK is sourced from the original manufacturer or authorized distributors?
All MC33275DT-5.0RK 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-5.0RK meets industry standards.
7.What is the process for return or replacement of MC33275DT-5.0RK?
All MC33275DT-5.0RK units undergo pre-shipment inspection (PSI). If there is an issue with MC33275DT-5.0RK, 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-5.0RK part is unused and in its original packaging.
Return procedure for MC33275DT-5.0RK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC33275DT-5.0RK 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…
