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onsemi NCP612SQ33T2G
- Part No.:
- NCP612SQ33T2G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP612SQ33T2G.pdf
- Description:
- IC REG LINEAR 3.3V 100MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:4,955
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Product details
Overview
NCP612SQ33T2G from onsemi is a fixed-output CMOS low-dropout linear voltage regulator delivering 3.3 V at up to 100 mA, featuring 40 µA typical quiescent current, 230 mV dropout at 100 mA, and ±2.0% output voltage accuracy - designed for battery-powered portable electronics requiring stable low-power rail generation.
For engineers reviewing the NCP612SQ33T2G datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low IQ, SC70-5 footprint compatibility, enable-controlled standby mode, and operation across −40 °C to +85 °C ambient temperature.
Technical Context
The NCP612SQ33T2G integrates a PMOS pass transistor with internal voltage reference, error amplifier, and thermal/overcurrent protection - enabling stable regulation without external compensation. Its architecture supports ceramic output capacitors ≥1.0 µF and tolerates input voltages from 0 V to 6.0 V.
Enable functionality provides logic-level control (VTH(HI) = 0.95 V, VTH(LO) = 0.3 V) for system power sequencing; unused Enable must be tied to Vin. The device exhibits 100 ppm/°C output voltage drift and 70 dB ripple rejection at 100 Hz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±2.0% - ensures reliable 3.3 V logic rail compliance for microcontrollers and sensors |
| Max Output Current | 100 mA - sufficient for low-power peripherals including BLE radios and display drivers |
| Quiescent Current | 40 µA typical - extends battery life in always-on sensor nodes and standby modes |
| Dropout Voltage | 230 mV at 100 mA - enables regulation from 3.53 V input, supporting single-cell Li-ion or two-cell alkaline sources |
| Operating Temp | −40 °C to +85 °C - qualified for industrial and consumer handheld environments |
| Input Voltage Range | 0 V to 6.0 V - accommodates wide-input battery and adapter supplies with margin |
| Thermal Protection | Internal shutdown at ~160 °C - prevents damage during sustained overload or poor PCB thermal design |
Pinout & Package
Package: SC70-5 (Case 419A), micro-miniature surface-mount package measuring 2.0 mm × 2.1 mm × 0.9 mm - optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply - accepts 0–6.0 V; requires local 1.0 µF decoupling capacitor |
| 2 | Gnd | Power ground reference - must connect to low-impedance ground plane to minimize noise |
| 3 | Enable | Active-high digital control - pulls low to disable regulator (IQ drops to 0.03 µA); tie to Vin if unused |
| 4 | N/C | No internal connection - left floating; no PCB trace required |
| 5 | Vout | Regulated 3.3 V output - drives load and 1.0 µF+ ceramic output capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical - reduces standby power loss in battery-critical applications like wearables |
| Low dropout architecture | 230 mV @ 100 mA - maintains regulation under weak battery conditions |
| Stable with ceramic capacitors | Supports 1.0 µF minimum output capacitance - eliminates need for costly tantalum or high-ESR caps |
| Integrated protection | Thermal shutdown and current limiting - avoids external fault-handling circuitry |
| Pb-free SC70-5 package | RoHS-compliant, halogen-free construction - meets global environmental compliance requirements |
Applications
| Smart Wearables | IoT Sensor Nodes |
|---|---|
Use Scenario: Compact fitness tracker with accelerometer, Bluetooth LE, and OLED display operating from coin cell or thin Li-poly battery. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying MCU, radio, and sensors - enabled only during active measurement cycles. Use Value: 40 µA IQ extends shelf life and operational runtime; SC70-5 footprint saves board area in <100 mm² form factor. | Use Scenario: Battery-powered environmental sensor node (temp/humidity/pressure) transmitting data hourly via sub-GHz RF. IC Role / Device Role / Timing Role: Always-on 3.3 V rail for real-time clock and wake-up controller; powers main MCU only during transmission bursts. Use Value: Low dropout allows full utilization of battery voltage down to 3.53 V; ±2% accuracy ensures ADC reference stability. |
| Portable Medical Devices | Handheld Test Instruments |
Use Scenario: Pocket-sized pulse oximeter using red/IR LEDs, analog front-end, and low-power MCU. IC Role / Device Role / Timing Role: Clean 3.3 V supply for analog signal chain and digital logic - critical for SNR preservation in optical measurements. Use Value: 100 ppm/°C tempco and 100 µVRMS output noise prevent measurement drift and baseline instability. | Use Scenario: Field-deployable multimeter with LCD, touch interface, and precision ADC - powered by AA batteries. IC Role / Device Role / Timing Role: Main system regulator providing 3.3 V to processor, display driver, and communication interface. Use Value: 70 dB ripple rejection suppresses switching noise from boost converters; SC70-5 enables compact, ruggedized enclosure design. |
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 at 250 mA, 1.6 µA IQ, SOT-23-5 package | Higher max current but larger footprint; lower IQ ideal for multi-year battery life | Select when >100 mA load or ultra-low IQ dominates over size constraints |
| AP2112K-3.3TRG1 | 300 mV dropout at 600 mA, 60 µA IQ, SOT-23-5 package | Higher current capability and thermal robustness, but higher quiescent draw | Select when driving higher-current peripherals (e.g., Wi-Fi modules) and board space permits SOT-23 |
Compared with MCP1700T-3302E/MB and AP2112K-3.3TRG1, the NCP612SQ33T2G offers optimal balance of ultra-small SC70-5 footprint, 100 mA capability, and 40 µA quiescent current - making it preferred for space- and battery-limited portable designs where moderate current suffices.
Availability
NCP612SQ33T2G is available at Aetrix Electronics and suitable for smart wearables, IoT sensor nodes, and portable medical devices requiring stable component supply with consistent lead times and lifecycle management.
Supply support for NCP612SQ33T2G 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, delivering silicon solutions for automotive, industrial, cloud, and intelligent edge applications.
The NCP612 series belongs to onsemi's low-power linear regulator product line - engineered specifically for battery-operated portable equipment demanding minimal quiescent current, small footprint, and high reliability in constrained thermal environments.
FAQ
What is the maximum input voltage rating for the NCP612SQ33T2G?
The NCP612SQ33T2G supports an absolute maximum input voltage of 6.0 V. Exceeding this limit risks permanent damage per the Absolute Maximum Ratings table. For reliable operation, maintain Vin ≤ 6.0 V while ensuring sufficient headroom above Vout (≥230 mV) to sustain regulation at full 100 mA load. The NCP612SQ33T2G datasheet specifies this rating under all operating conditions including transient events.
Does the NCP612SQ33T2G require external capacitors, and what values are recommended?
Yes, the NCP612SQ33T2G requires both input (Cin) and output (Cout) capacitors. The datasheet specifies 1.0 µF ceramic capacitors for both positions - placed as close as possible to the IC pins. Larger values improve transient response and noise rejection; ESR between a few mΩ and 5.0 Ω is acceptable. TDK part numbers C2012X5R1C105K and C1608X5R1A105K are explicitly recommended for Cout in the Applications Information section of the NCP612SQ33T2G datasheet.
How does the Enable pin function on the NCP612SQ33T2G, and what happens when it's not used?
The Enable pin on the NCP612SQ33T2G is active-high: pulling it ≥0.95 V enables regulation, while pulling it ≤0.3 V disables the output and reduces quiescent current to 0.03 µA. If unused, the pin must be connected directly to Vin - floating the pin may cause erratic behavior or increased leakage. This requirement is explicitly stated in the Pin Function Description and Applications Information sections of the NCP612SQ33T2G datasheet.
Is the NCP612SQ33T2G suitable for automotive applications?
No - the NCP612SQ33T2G is rated for −40 °C to +85 °C ambient operation and is not AEC-Q100 qualified. For automotive use, select the NCV612SQ33T2G variant (marked with NCV prefix), which extends temperature range to −40 °C to +125 °C and includes PPAP capability and automotive-specific process controls. The NCP612SQ33T2G datasheet clearly distinguishes these variants in the Features and Ordering Information tables.
What is the output voltage accuracy specification for the NCP612SQ33T2G across temperature and load?
The NCP612SQ33T2G guarantees ±2.0% output voltage accuracy at 25 °C and 10 mA load. Over the full −40 °C to +85 °C range and 10 mA load, accuracy remains within ±3.0% (1.5 V to 3.7 V versions). At 100 mA load and same temperature range, deviation widens to ±4.0% - all values confirmed in the Electrical Characteristics table of the NCP612SQ33T2G datasheet, Rev. 5.
NCP612SQ33T2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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):
- 0.38V @ 100mA
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 90 µA
- Current - Supply (Max):
- 90 µA
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-88A (SC-70-5/SOT-353)
NCP612SQ33T2G FAQ
1.How can I place an order for NCP612SQ33T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP612SQ33T2G 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 NCP612SQ33T2G reliable?
The price and inventory of NCP612SQ33T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP612SQ33T2G is usually 5 days.
3.What payment methods are accepted for NCP612SQ33T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP612SQ33T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP612SQ33T2G?
NCP612SQ33T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP612SQ33T2G 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 NCP612SQ33T2G?
For technical support, including NCP612SQ33T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP612SQ33T2G requirements.
6.How does Aetrix verify that NCP612SQ33T2G is sourced from the original manufacturer or authorized distributors?
All NCP612SQ33T2G 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 NCP612SQ33T2G meets industry standards.
7.What is the process for return or replacement of NCP612SQ33T2G?
All NCP612SQ33T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP612SQ33T2G, 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 NCP612SQ33T2G part is unused and in its original packaging.
Return procedure for NCP612SQ33T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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