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onsemi MC33263NW-47R2
- Part No.:
- MC33263NW-47R2
- Manufacturer:
- onsemi
- Package:
- -
- Datasheet:
-
MC33263NW-47R2.pdf
- Description:
- IC REG LINEAR FIXED LDO REG
- Quantity:
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Inventory:4,000
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Product details
Overview
MC33263NW-47R2 from onsemi is a 4.75 V fixed-output, low-noise, low-dropout linear regulator in SOT-23L package delivering up to 150 mA with typical dropout of 137 mV at 100 mA and 25 µVRMS output noise (100 Hz–100 kHz, 10 nF bypass). It features logic-level ON/OFF control, thermal shutdown, short-circuit protection, and ESR-insensitive stability-ideal for battery-powered portable systems requiring clean, fast-switching power.
For engineers reviewing the MC33263NW-47R2 datasheet, pinout, applications, or equivalent options, key selection criteria include its 4.75 V output accuracy (±1.5% over –40°C to +85°C), ultra-low quiescent current (170 µA ON, 100 nA OFF), <1.0 mV line transient response, and compatibility with zero-ESR ceramic output capacitors.
Technical Context
The MC33263NW-47R2 employs a bandgap-referenced error amplifier with antisaturation and current-limit circuitry to maintain regulation under dynamic load and input transients. Its internal architecture enables stable operation without minimum ESR constraints, supporting ceramic, tantalum, or polymer capacitors from 1.0 µF to >10 µF.
It integrates thermal shutdown (trip at 150°C) and foldback current limiting (min 175 mA), with dedicated ON/OFF pin (TTL/CMOS-compatible) enabling precise system-level power sequencing. The bypass pin allows external 10 nF capacitor to reduce output noise to 25 µVRMS, while omitting it yields faster 20 µs startup at higher 65 µVRMS noise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.75 V ±1.5% (2.7 V ≤ VIN ≤ 12 V, –40°C to +85°C, 1–150 mA load) |
| Dropout Voltage | 137 mV typical at 100 mA (enables high-efficiency operation with small VIN–VOUT margin) |
| Output Noise | 25 µVRMS (100 Hz–100 kHz, 10 nF bypass); 65 µVRMS (no bypass) |
| Quiescent Current | 170 µA (ON, no load); 100 nA (OFF, no load) - extends battery life in standby |
| Ripple Rejection | –70 dB @ 1.0 kHz (suppresses switching noise from upstream DC/DC converters) |
| Line Transient Response | 1.0 mV overshoot/undershoot (VIN step from VOUT+1.0 V to VOUT+4.0 V, 15 mV/µs slew) |
| Load Regulation | 20 mV max (1–150 mA load change at VIN = VOUT + 1.0 V) |
Pinout & Package
Housed in SOT-23L (Case 318J), the MC33263NW-47R2 uses a 6-pin surface-mount package with exposed thermal pad (not electrically connected). Pin 1 is ON/OFF; Pin 2 is GND; Pin 3 is VIN; Pin 4 is VOUT; Pin 5 is GND; Pin 6 is BYPASS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (ON/OFF) | Enable control input | TTL/CMOS-compatible logic input; <0.3 V = OFF, >2.2 V = ON; draws ≤2.5 µA |
| 2 (GND) | Analog ground reference | Primary ground return for regulator core; must be low-impedance connection to PCB ground plane |
| 3 (VIN) | Input power supply | Accepts 2.7 V to 12 V; requires 1.0 µF decoupling capacitor placed adjacent to pin |
| 4 (VOUT) | Regulated output | Delivers 4.75 V at up to 150 mA; supports zero-ESR ceramic capacitors ≥1.0 µF |
| 5 (GND) | Power ground | Secondary ground path for output stage; ties to same ground net as Pin 2 for optimal PSRR |
| 6 (BYPASS) | Noise reduction node | Connects to 10 nF capacitor to reduce output noise to 25 µVRMS; optional for faster wake-up |
Key Features
| Feature | Design Value |
|---|---|
| ESR-insensitive stability | Supports output capacitors with ESR from 0 mΩ to 3.0 Ω - eliminates need for tantalum or specific ESR ranges |
| Ultra-low noise architecture | 25 µVRMS broadband noise with 10 nF bypass - suitable for RF, audio, and precision analog circuits |
| Fast enable/disable response | 20 µs startup (no bypass); 1.1 ms with 10 nF bypass - enables rapid power cycling in portable devices |
| Robust protection suite | Thermal shutdown (150°C), short-circuit current limit (≥175 mA), and antisaturation design prevent latch-up or damage |
| High PSRR across frequency | –90 dB DC line regulation; –70 dB @ 1 kHz - maintains output integrity amid noisy DC/DC ripple |
Applications
| Cellular Handsets | Wireless Headsets |
|---|---|
Use Scenario: Powering RF front-end ICs and baseband processors in compact, battery-constrained mobile handsets. IC Role / Device Role / Timing Role: Primary LDO supplying 4.75 V to voltage-sensitive RF synthesizers and ADCs. Use Value: 25 µVRMS noise prevents phase noise degradation in local oscillators; 137 mV dropout maximizes usable battery range. |
Use Scenario: Providing clean bias to Bluetooth audio codecs and MEMS microphones in ultra-low-power wearables. IC Role / Device Role / Timing Role: Low-quiescent LDO delivering regulated 4.75 V during active audio streaming and deep-sleep modes. Use Value: 100 nA OFF-state current minimizes battery drain during idle; ESR-insensitive design allows tiny 1.0 µF ceramic caps for space savings. |
| Medical Pulse Oximeters | Industrial Sensor Nodes |
Use Scenario: Supplying photodiode amplifiers and analog signal chains in battery-operated clinical-grade oximeters. IC Role / Device Role / Timing Role: Precision LDO powering low-noise instrumentation amplifiers and 24-bit sigma-delta ADCs. Use Value: <1.0 mV line transient response ensures stable reference during LED pulsing; tight load regulation (20 mV) maintains accuracy across varying sensor loads. |
Use Scenario: Regulating power for wireless sensor transceivers (e.g., LoRa, NB-IoT) in remote industrial monitoring nodes. IC Role / Device Role / Timing Role: Enable-controlled LDO providing 4.75 V to RF ICs and microcontrollers during periodic wake-up bursts. Use Value: Logic-level ON/OFF pin synchronizes with MCU GPIO for zero-power sleep; thermal shutdown protects against enclosure overheating in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV707475DBVR | Lower IQ (25 µA ON), lower dropout (210 mV @ 150 mA), but higher noise (45 µVRMS) and requires ≥1 µF output cap with ≥15 mΩ ESR | Lacks bypass pin; less suitable for ultra-low-noise RF/analog designs where MC33263NW-47R2's 25 µVRMS is critical | Prefer when ultra-low quiescent current dominates over noise performance and ESR flexibility |
| NCP1117ST4.75T3G | Higher dropout (1.1 V @ 800 mA), higher IQ (6 mA), no ON/OFF control, TO-220/SOT-223 only - not pin-compatible | Designed for higher-current, non-portable applications; lacks enable and low-noise capability | Consider only for cost-sensitive, non-battery, high-current legacy designs where size and noise are secondary |
Compared with TLV707475DBVR and NCP1117ST4.75T3G, the MC33263NW-47R2 uniquely combines sub-150 mV dropout, 25 µVRMS noise with bypass, 100 nA OFF current, and zero-ESR stability - making it irreplaceable in space-constrained, noise-sensitive portable systems requiring fast enable response.
Availability
MC33263NW-47R2 is available at Aetrix Electronics and suitable for cellular handsets, wireless headsets, and medical pulse oximeters requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MC33263NW-47R2 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 (Nasdaq: ON) is a global semiconductor leader focused on energy-efficient innovation for automotive, industrial, cloud, medical, and IoT applications.
The MC33263NW-47R2 belongs to onsemi's precision analog LDO portfolio, engineered specifically for portable, battery-powered systems demanding ultra-low noise, fast enable response, and ESR-flexible stability without sacrificing efficiency or ruggedness.
FAQ
What is the output voltage tolerance of the MC33263NW-47R2 over temperature and load?
The MC33263NW-47R2 delivers 4.75 V with ±1.5% tolerance across –40°C to +85°C ambient temperature and 1.0 mA to 150 mA load current, as specified in the Electrical Characteristics table (page 414 of datasheet Rev. 5). This includes line regulation of ≤10 mV and load regulation of ≤20 mV under defined test conditions, ensuring consistent performance in portable battery systems.
Does the MC33263NW-47R2 require an external bypass capacitor to meet its 25 µVRMS noise specification?
Yes - the 25 µVRMS noise figure (100 Hz–100 kHz) for the MC33263NW-47R2 is achieved only when a 10 nF capacitor is connected to the BYPASS pin (Pin 6). Without it, output noise rises to 65 µVRMS. The bypass capacitor also increases startup time from 20 µs to 1.1 ms, so designers must trade noise vs. wake-up speed based on application needs.
Can the MC33263NW-47R2 operate with ceramic output capacitors having zero ESR?
Yes - the MC33263NW-47R2 is explicitly designed for ESR-insensitive stability and supports ceramic output capacitors with ESR ranging from 0 mΩ to 3.0 Ω. This eliminates the need for tantalum or aluminum electrolytic capacitors and allows use of compact, high-reliability 1.0 µF ceramic caps - a key advantage over conventional LDOs requiring minimum ESR for loop stability.
What protection features are integrated into the MC33263NW-47R2?
The MC33263NW-47R2 integrates thermal shutdown (trips at 150°C), short-circuit current limiting (≥175 mA), and antisaturation circuitry. These protections operate autonomously without external components and restore normal operation once fault conditions clear - ensuring robustness in handheld, wearable, and industrial sensor applications where overtemperature or output faults may occur.
Is the MC33263NW-47R2 pin-compatible with other regulators in its family or from competing manufacturers?
The MC33263NW-47R2 is functionally and pin-compatible with the TK112xxA/B series per the datasheet (page 412), sharing identical SOT-23L pinout (ON/OFF, GND, VIN, VOUT, GND, BYPASS). However, it is not pin-compatible with standard 5-pin LDOs (e.g., TLV707, MCP1700) due to its 6-pin configuration and dedicated BYPASS terminal.
MC33263NW-47R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- -
- Output Type:
- -
- Number of Regulators:
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- -
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MC33263NW-47R2 FAQ
1.How can I place an order for MC33263NW-47R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33263NW-47R2 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 MC33263NW-47R2 reliable?
The price and inventory of MC33263NW-47R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33263NW-47R2 is usually 5 days.
3.What payment methods are accepted for MC33263NW-47R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33263NW-47R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33263NW-47R2?
MC33263NW-47R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33263NW-47R2 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 MC33263NW-47R2?
For technical support, including MC33263NW-47R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33263NW-47R2 requirements.
6.How does Aetrix verify that MC33263NW-47R2 is sourced from the original manufacturer or authorized distributors?
All MC33263NW-47R2 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 MC33263NW-47R2 meets industry standards.
7.What is the process for return or replacement of MC33263NW-47R2?
All MC33263NW-47R2 units undergo pre-shipment inspection (PSI). If there is an issue with MC33263NW-47R2, 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 MC33263NW-47R2 part is unused and in its original packaging.
Return procedure for MC33263NW-47R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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