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onsemi NCP663SQ33T1G
- Part No.:
- NCP663SQ33T1G
- Manufacturer:
- onsemi
- Package:
- SC-82A, SOT-343
- Datasheet:
-
NCP663SQ33T1G.pdf
- Description:
- IC REG LINEAR 3.3V 100MA SC82AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,925
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Product details
Overview
NCP663SQ33T1G from onsemi is a fixed-output, 3.3 V, 100 mA CMOS low-dropout linear regulator in SC-82AB package, featuring 2.5 µA typical quiescent current, ±2.0% output voltage accuracy, and 230 mV typical dropout at 100 mA - designed for battery-powered portable electronics requiring ultra-low standby power.
For engineers reviewing the NCP663SQ33T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at full load, thermal performance in micro-miniature SC-82AB layout, compatibility with 0.1 µF ceramic output capacitors, and absence of enable functionality compared to NCP662 variants.
Technical Context
The NCP663SQ33T1G implements a PMOS pass transistor architecture enabling low dropout and ultra-low quiescent current. It integrates internal voltage reference, error amplifier, current limit, and thermal shutdown protection - but omits an enable pin, distinguishing it from the NCP662 series.
It operates across −40 °C to +85 °C ambient temperature, supports input voltages up to 6.0 V, and maintains regulation with only 0.1 µF minimum ceramic output capacitance - eliminating ESR dependency and simplifying decoupling design in space-constrained applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±2.0% (ensures stable MCU core/logic rail under load and temperature variation) |
| Max Output Current | 100 mA (supports low-power sensors, RF modules, and microcontrollers) |
| Dropout Voltage | 230 mV typ. @ 100 mA (enables operation down to 3.53 V input for 3.3 V output) |
| Quiescent Current | 2.5 µA typ. (extends battery life in always-on monitoring systems) |
| Input Voltage Range | Up to 6.0 V (compatible with single-cell Li-ion, 2-cell alkaline, or regulated 5 V rails) |
| Thermal Shutdown | Activates at ~160 °C (protects device during sustained high-power dissipation) |
| Output Capacitor | Min. 0.1 µF ceramic (reduces BOM cost and PCB area vs. tantalum or larger ceramics) |
Pinout & Package
The NCP663SQ33T1G is housed in the SC-82AB (Case 419C) surface-mount package - a 4-pin, 2.2 mm × 1.35 mm × 0.95 mm micro-miniature outline with exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Power supply ground reference and primary thermal path to PCB |
| 2 | Vin | Unregulated input supply; must be decoupled with ≥1.0 µF capacitor near pin |
| 3 | Vout | Stable 3.3 V regulated output; requires ≥0.1 µF ceramic capacitor for stability |
| 4 | N/C | No internal connection - must remain unconnected (not grounded or tied) |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 2.5 µA typical enables >1-year battery life in 10 µA average-current IoT endpoints |
| SC-82AB micro-package | 2.2 mm × 1.35 mm footprint saves >60% board area vs. SOT-23 while maintaining thermal reliability |
| 0.1 µF ceramic stability | Eliminates need for ESR-tuned capacitors - reduces component count and layout sensitivity |
| Integrated thermal shutdown | Self-protecting operation prevents damage during transient overloads or poor heatsinking |
| ±2.0% output accuracy | Meets tight tolerance requirements for 3.3 V I/O and analog subsystems without external trimming |
Applications
| Wearable Health Monitor | Industrial Sensor Node |
|---|---|
Use Scenario: Continuous ECG/PPG sensing powered by coin cell or small LiPo battery. IC Role / Device Role / Timing Role: Primary 3.3 V supply for ultra-low-power MCU, analog front-end, and BLE radio. Use Value: 2.5 µA quiescent current extends battery runtime beyond 12 months; 0.1 µF output cap enables minimal PCB real estate usage. | Use Scenario: Wireless vibration/temperature node mounted on rotating machinery with intermittent wake-up. IC Role / Device Role / Timing Role: Stable 3.3 V rail for MEMS accelerometer, ADC, and sub-GHz transceiver during active measurement bursts. Use Value: 230 mV dropout allows operation down to 3.53 V input - critical for brown-out resilience as battery discharges. |
| Portable Barcode Scanner | Automotive Cabin Camera Module |
Use Scenario: Handheld scanner using pulsed laser and CMOS imager, powered by rechargeable Li-ion. IC Role / Device Role / Timing Role: Main 3.3 V regulator for image sensor interface, flash controller, and USB PHY. Use Value: SC-82AB package fits within tight mechanical envelope; ±2.0% accuracy ensures reliable USB enumeration and sensor timing. | Use Scenario: Low-profile interior camera module operating in vehicle cabin (−40 °C to +85 °C). IC Role / Device Role / Timing Role: Non-enable 3.3 V supply for image signal processor and MIPI interface. Use Value: AEC-Q100 qualified NCV663SQ33T1G variant exists; this NCP663SQ33T1G serves non-automotive versions with identical electrical specs and thermal robustness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3302E/MB | 250 mV dropout @ 250 mA, 1.6 µA IQ, SOT-23-5 package with enable pin | Supports higher load current and includes enable control - requires PCB layout change and additional pull-up resistor | Select when system requires ON/OFF sequencing or >100 mA output capability |
| AP2112K-3.3TRG1 | 300 mV dropout @ 600 mA, 60 µA IQ, SOT-23-5 with enable and thermal foldback | Higher IQ and larger package; better for medium-current apps but unsuitable for ultra-low-power battery designs | Select when load exceeds 100 mA or enable-controlled power gating is mandatory |
Compared with MCP1700T-3302E/MB and AP2112K-3.3TRG1, the NCP663SQ33T1G delivers the lowest quiescent current in the smallest footprint - making it optimal for space- and energy-constrained applications where enable functionality is unnecessary and load stays ≤100 mA.
Availability
NCP663SQ33T1G is available at Aetrix Electronics and suitable for wearable electronics, industrial wireless sensors, portable medical devices, and consumer handheld instruments requiring stable component supply and long-term manufacturability.
Supply support for NCP663SQ33T1G 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 supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and edge applications.
The NCP663 series belongs to onsemi's precision low-IQ LDO portfolio - engineered specifically for battery-powered portable equipment where extended runtime and minimal PCB area are critical design constraints.
FAQ
Does NCP663SQ33T1G have an enable pin?
No, the NCP663SQ33T1G does not include an enable pin. Pin 4 is marked N/C (no internal connection). This distinguishes it from the NCP662 series, which features an enable function on pin 4. For designs requiring ON/OFF control, the NCP662SQ33T1G or alternative LDOs with enable must be selected - the NCP663SQ33T1G remains active whenever Vin is within specification.
What is the minimum output capacitor required for stable operation of NCP663SQ33T1G?
The NCP663SQ33T1G requires a minimum 0.1 µF ceramic output capacitor for guaranteed stability across all operating conditions. Unlike many LDOs, it imposes no ESR requirement - enabling use of low-cost, low-profile X5R/X7R MLCCs without risk of oscillation. Larger values (e.g., 1.0 µF) improve load transient response but are not mandatory.
What is the maximum input voltage rating for NCP663SQ33T1G?
The absolute maximum input voltage for NCP663SQ33T1G is 6.0 V, as specified in the Maximum Ratings table. Operation above this level risks permanent damage. For reliable 3.3 V output, Vin must exceed Vout by at least the dropout voltage - e.g., ≥3.53 V at 100 mA load - while staying ≤6.0 V to ensure device integrity.
Is NCP663SQ33T1G suitable for automotive applications?
The NCP663SQ33T1G is rated for −40 °C to +85 °C ambient operation and is not AEC-Q100 qualified. For automotive infotainment or body electronics, the pin-compatible NCV663SQ33T1G variant should be used - it shares identical electrical specifications but adds automotive qualification, PPAP capability, and extended −40 °C to +125 °C temperature range.
What package type and dimensions does NCP663SQ33T1G use?
The NCP663SQ33T1G uses the SC-82AB (Case 419C-02) package: a 4-pin, micro-miniature surface-mount outline measuring 2.2 mm × 1.35 mm × 0.95 mm with 0.65 mm pin pitch. Its compact size and thermal pad (non-electrical) support high-density layouts and moderate power dissipation in portable designs.
NCP663SQ33T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.42V @ 100mA
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 1 µA
- Current - Supply (Max):
- 6 µA
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-82AB
NCP663SQ33T1G FAQ
1.How can I place an order for NCP663SQ33T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP663SQ33T1G 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 NCP663SQ33T1G reliable?
The price and inventory of NCP663SQ33T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP663SQ33T1G is usually 5 days.
3.What payment methods are accepted for NCP663SQ33T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP663SQ33T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP663SQ33T1G?
NCP663SQ33T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP663SQ33T1G 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 NCP663SQ33T1G?
For technical support, including NCP663SQ33T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP663SQ33T1G requirements.
6.How does Aetrix verify that NCP663SQ33T1G is sourced from the original manufacturer or authorized distributors?
All NCP663SQ33T1G 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 NCP663SQ33T1G meets industry standards.
7.What is the process for return or replacement of NCP663SQ33T1G?
All NCP663SQ33T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP663SQ33T1G, 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 NCP663SQ33T1G part is unused and in its original packaging.
Return procedure for NCP663SQ33T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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