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onsemi NCP612SQ31T1
- Part No.:
- NCP612SQ31T1
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP612SQ31T1.pdf
- Description:
- IC REG LINEAR 3.1V 100MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:3,597
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Product details
Overview
NCP612SQ31T1 from onsemi is a 3.1 V fixed-output CMOS low-quiescent-current linear regulator in SC70−5 package, featuring 40 µA typical quiescent current, 210 mV dropout at 100 mA, and ±2.0% output voltage accuracy over −40°C to +85°C - designed for battery-powered portable electronics requiring stable low-power voltage regulation.
For engineers reviewing the NCP612SQ31T1 datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low IQ, SC70−5 footprint compatibility, enable-controlled standby mode, and ceramic-capacitor stability without ESR constraints.
Technical Context
The NCP612SQ31T1 integrates a PMOS pass transistor with internal voltage reference, error amplifier, and protection circuitry (current limit and thermal shutdown). It operates as a single-stage LDO with no external feedback network required due to fixed 3.1 V output.
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. Input voltage range is 0–6.0 V, supporting common Li-ion and multi-cell battery rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.1 V ±2.0% (ensures stable rail for 3.3 V-tolerant microcontrollers and sensors) |
| Quiescent Current | 40 µA typical (enables >1-year battery life in always-on IoT endpoints) |
| Dropout Voltage | 210 mV at 100 mA (allows regulation down to ~3.31 V input for 3.1 V output) |
| Operating Temp | −40°C to +85°C (supports consumer and industrial ambient conditions) |
| Max Input Voltage | 6.0 V (compatible with 2-cell alkaline, LiFePO4, or regulated 5 V supplies) |
| Ground Current | 40 µA at 1 mA load (low IQ maintained across light-load operation) |
| Output Noise | 100 µVRMS (100 Hz–100 kHz; suitable for noise-sensitive analog/RF circuits) |
Pinout & Package
Package: SC70−5 (SOT−353 / Case 419A−02), 1.9 mm × 1.3 mm × 0.9 mm, surface-mount, Pb-free option available.
| 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 PCB ground plane |
| 3 | Enable | Active-high digital control - pulls device into <1 µA standby when low; tie to Vin if unused |
| 4 | N/C | No internal connection - leave unconnected or float; not bonded internally |
| 5 | Vout | Regulated 3.1 V output - supports 100 mA continuous load with ceramic or tantalum output capacitors ≥1.0 µF |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical enables multi-year battery operation in always-on sensor nodes |
| Low-dropout PMOS architecture | 210 mV dropout at full 100 mA load preserves headroom in tight-voltage systems |
| Ceramic-capacitor compatible | No minimum ESR requirement allows use of small, low-cost X5R/X7R MLCCs |
| Integrated protection | Thermal shutdown (160°C typical) and current limiting prevent damage during fault conditions |
| Enable-controlled shutdown | Logic-compatible enable pin reduces system standby power without external FETs |
Applications
| Wearable Health Monitor | Industrial Wireless Sensor Node |
|---|---|
Use Scenario: Continuous ECG/PPG signal acquisition powered by coin cell or rechargeable Li-ion. IC Role / Device Role / Timing Role: Primary 3.1 V supply for ultra-low-power MCU, analog front-end, and BLE radio. Use Value: 40 µA IQ extends battery life beyond 2 years; SC70−5 footprint minimizes board area in compact wearable form factor. | Use Scenario: Battery-operated temperature/humidity node transmitting via LoRaWAN every 15 minutes. IC Role / Device Role / Timing Role: Regulated 3.1 V rail for microcontroller, sensor interface, and RF transceiver during active transmit bursts. Use Value: 210 mV dropout ensures regulation even as battery discharges to 3.3 V; enable pin synchronizes power with transmission cycle. |
| Portable Barcode Scanner | Smart Home Motion Detector |
Use Scenario: Handheld scanner using intermittent laser/LED illumination and CMOS image sensor. IC Role / Device Role / Timing Role: Stable 3.1 V supply for image sensor bias, ADC reference, and decoding MCU. Use Value: 100 µVRMS output noise prevents corruption of high-resolution image data; ceramic-capacitor compatibility simplifies BOM. | Use Scenario: PIR-based occupancy detector with wake-on-motion and BLE reporting. IC Role / Device Role / Timing Role: Always-on 3.1 V supply for PIR signal conditioning, ultra-low-power MCU, and BLE SoC in deep-sleep mode. Use Value: ±2.0% output accuracy maintains consistent sensor biasing across temperature; −40°C to +85°C rating ensures outdoor wall-mount reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3102E/MB | 3.1 V output, 1.6 µA IQ, SOT-23-5 package, 600 mV dropout at 250 mA | Lower IQ but higher dropout and larger footprint; no enable pin | Select when lowest possible standby current is critical and board space allows SOT-23-5 |
| AP2112K-3.1TRG1 | 3.1 V output, 60 µA IQ, SOT-23-5 package, 300 mV dropout at 600 mA | Higher current capability and IQ, same pin count but different pinout; no thermal shutdown | Select when >100 mA load or higher transient current is required, and thermal protection is handled externally |
Compared with MCP1700T-3102E/MB and AP2112K-3.1TRG1, the NCP612SQ31T1 offers optimal balance of ultra-low IQ, compact SC70−5 size, integrated enable, and thermal protection - making it ideal for space-constrained, battery-critical portable designs where 100 mA output suffices.
Availability
NCP612SQ31T1 is available at Aetrix Electronics and suitable for wearable health monitors, industrial wireless sensor nodes, portable barcode scanners, smart home motion detectors, and handheld instrumentation requiring stable component supply with long-term manufacturability.
Supply support for NCP612SQ31T1 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP612 series belongs to onsemi's precision low-power linear regulator product line, engineered specifically for battery-powered portable electronics demanding minimal quiescent current, small footprint, and robust performance across temperature.
FAQ
What is the maximum input voltage rating for the NCP612SQ31T1?
The NCP612SQ31T1 has a maximum input voltage rating of 6.0 V, as specified in its Absolute Maximum Ratings table. This allows safe operation from common battery sources including two-cell alkaline (up to ~3.2 V), LiFePO4 (up to ~3.6 V), or regulated 5 V supplies. Exceeding 6.0 V may cause permanent damage.
Does the NCP612SQ31T1 require an external resistor divider for output voltage setting?
No, the NCP612SQ31T1 does not require an external resistor divider. It is a fixed-output regulator with factory-trimmed 3.1 V output; all feedback and voltage-setting resistors are integrated internally. No external components are needed to set the output voltage.
Can the NCP612SQ31T1 operate with ceramic output capacitors?
Yes, the NCP612SQ31T1 is fully stable with ceramic output capacitors ranging from 1.0 µF upward and exhibiting ESR from a few milliohms up to 5.0 Ω. Its design eliminates minimum ESR requirements, enabling use of low-cost, small-footprint X5R/X7R MLCCs without risk of oscillation.
What is the function of Pin 4 (N/C) on the NCP612SQ31T1 SC70−5 package?
Pin 4 of the NCP612SQ31T1 is marked N/C (No Connection) and has no internal bond wire or circuit connection. It must be left unconnected or floated - neither grounded nor tied to any voltage. Routing traces or solder pads to this pin provides no functional benefit and may risk mechanical interference.
How does the enable pin of the NCP612SQ31T1 behave during power-up?
The NCP612SQ31T1 enable pin is active-high with threshold voltages of 0.95 V (turn-on) and 0.3 V (turn-off). During power-up, the device remains disabled until Vin reaches sufficient level and Enable rises above 0.95 V. If Enable is tied to Vin, turn-on occurs concurrently with input supply stabilization - ensuring controlled power sequencing without external timing circuitry.
NCP612SQ31T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 3.1V
- 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)
NCP612SQ31T1 FAQ
1.How can I place an order for NCP612SQ31T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP612SQ31T1 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 NCP612SQ31T1 reliable?
The price and inventory of NCP612SQ31T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP612SQ31T1 is usually 5 days.
3.What payment methods are accepted for NCP612SQ31T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP612SQ31T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP612SQ31T1?
NCP612SQ31T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP612SQ31T1 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 NCP612SQ31T1?
For technical support, including NCP612SQ31T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP612SQ31T1 requirements.
6.How does Aetrix verify that NCP612SQ31T1 is sourced from the original manufacturer or authorized distributors?
All NCP612SQ31T1 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 NCP612SQ31T1 meets industry standards.
7.What is the process for return or replacement of NCP612SQ31T1?
All NCP612SQ31T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP612SQ31T1, 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 NCP612SQ31T1 part is unused and in its original packaging.
Return procedure for NCP612SQ31T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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