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onsemi NCP612SQ18T1
- Part No.:
- NCP612SQ18T1
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP612SQ18T1.pdf
- Description:
- IC REG LINEAR 1.8V 100MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:5,423
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Product details
Overview
NCP612SQ18T1 from onsemi is a 1.8 V fixed-output CMOS low-dropout linear voltage regulator in SC70−5 package, delivering up to 100 mA output current with 40 µA typical quiescent current and 230 mV dropout at 100 mA. It integrates PMOS pass transistor, thermal shutdown, current limit, and enable control-designed for battery-powered portable electronics requiring stable low-power biasing.
For engineers reviewing the NCP612SQ18T1 datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low IQ, ±2.0% output accuracy over −40°C to +85°C, SC70−5 footprint compatibility, and enable-controlled standby mode for system-level power sequencing.
Technical Context
The NCP612SQ18T1 employs a PMOS pass transistor architecture enabling low dropout and near-zero gate-drive current, eliminating external bias requirements. Its internal error amplifier maintains regulation using a precision voltage reference and resistor-based feedback network integrated on-die.
Enable functionality is implemented as a logic-level input (VTH(HI) = 0.95 V, VTH(LO) = 0.3 V) that directly controls the PMOS gate via internal circuitry-no external pull-up needed when unused. Thermal protection activates at ~160°C junction temperature, forcing shutdown until cooldown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.8 V ±2.0% (ensures stable core/bias rail for 1.8 V logic or RF ICs) |
| Max Output Current | 100 mA (supports microcontrollers, sensors, or interface ICs in portable devices) |
| Quiescent Current | 40 µA typical (enables >1-year battery life in always-on sensor nodes) |
| Dropout Voltage | 230 mV at 100 mA (allows operation down to Vin = 2.03 V for 1.8 V output) |
| Operating Temp Range | −40°C to +85°C (qualified for commercial/industrial portable equipment) |
| Input Voltage Range | 0 to 6.0 V (compatible with single-cell Li-ion, 2×AA, or USB-supplied systems) |
| Enable Threshold | VEN(HI) = 0.95 V min; VEN(LO) = 0.3 V max (directly compatible with 1.8 V GPIO) |
Pinout & Package
Package: SC70−5 (Case 419A−02), 1.80 × 1.15 mm footprint, 0.65 mm lead pitch, surface-mount, Pb-free option available (NCP612SQ18T1G).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply-must be decoupled with ≥1.0 µF ceramic capacitor placed adjacent to pin |
| 2 | Gnd | Power ground reference-requires low-impedance PCB connection to minimize noise coupling |
| 3 | Enable | Active-high digital control-pull low to disable regulator (IQ drops to ≤0.03 µA); tie to Vin if unused |
| 4 | N/C | No internal connection-must remain unconnected; no routing or soldering required |
| 5 | Vout | Regulated 1.8 V output-requires ≥1.0 µF output capacitor; supports ceramic/tantalum with ESR 0–5 Ω |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical enables multi-year operation from coin cells in IoT endpoints |
| Low dropout with PMOS pass device | 230 mV @ 100 mA allows use with aging batteries or low-headroom supplies |
| Integrated protection | Thermal shutdown (~160°C) and current limiting prevent damage during fault conditions |
| Stable with low-ESR ceramics | No minimum ESR requirement simplifies BOM and reduces board space vs. older LDOs |
| Enable-controlled standby | Reduces total system IQ to <0.03 µA-critical for wake-on-event architectures |
Applications
| Wearable Health Sensors | Bluetooth LE Peripheral Modules |
|---|---|
Use Scenario: Continuous ECG/PPG monitoring in wrist-worn devices powered by CR2032 or rechargeable Li-ion. IC Role / Device Role / Timing Role: Primary 1.8 V supply for analog front-end, ADC, and BLE SoC core domain. Use Value: 40 µA IQ extends battery life beyond 12 months; SC70−5 footprint minimizes area in space-constrained wearables. |
Use Scenario: Compact BLE beacon or sensor node operating from two AA alkaline cells (3.0 V fresh, ~2.2 V end-of-life). IC Role / Device Role / Timing Role: Regulated 1.8 V rail for BLE radio transceiver and microcontroller I/O banks. Use Value: 230 mV dropout ensures regulation down to 2.03 V input-maximizing usable battery capacity. |
| Industrial Handheld Scanners | Smart Home Motion Detectors |
Use Scenario: Ruggedized barcode scanner with laser diode driver, imager, and MCU-all powered from 3.7 V Li-ion. IC Role / Device Role / Timing Role: Clean 1.8 V supply for image sensor interface and low-voltage logic. Use Value: ±2.0% output accuracy over −40°C to +85°C ensures consistent sensor performance across environmental extremes. |
Use Scenario: PIR-based occupancy sensor with ultra-low-power MCU and RF transceiver, running on CR123A primary cell. IC Role / Device Role / Timing Role: Always-on 1.8 V bias for PIR signal conditioning and wake-up controller. Use Value: Enable pin allows MCU to power-cycle the LDO during deep sleep-reducing system IQ to sub-µA levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-IQ LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1802E/MB | 2.0 µA IQ, 6 V max input, SOT-23-5 package (larger than SC70−5), 1.8 V ±1.0% accuracy | Better IQ but larger footprint and lower accuracy tolerance; lacks enable pin | Select when lowest possible quiescent current dominates over size and enable control |
| Torex XC6206P182MR-G | 1.0 µA IQ, 6.5 V max input, SOT-25 package, 1.8 V ±2.0% accuracy, no enable pin | Lower IQ and same accuracy, but no enable function and larger SOT-25 footprint | Choose when enable functionality is unnecessary and minimal IQ is critical for energy harvesting designs |
Compared with MCP1700T-1802E/MB and XC6206P182MR-G, the NCP612SQ18T1 uniquely balances ultra-low IQ, SC70−5 miniaturization, integrated enable, and robust thermal/current protection-making it optimal for space-constrained, battery-powered systems requiring active power management.
Availability
NCP612SQ18T1 is available at Aetrix Electronics and suitable for wearable health sensors, Bluetooth LE peripherals, industrial handheld scanners, and smart home motion detectors requiring stable component supply with guaranteed long-term sourcing.
Supply support for NCP612SQ18T1 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 NCP612SQ18T1 belongs to the NCP612 series of ultra-low-IQ LDO regulators designed specifically for battery-powered portable equipment where extended runtime and miniature packaging are essential.
FAQ
What is the maximum input voltage rating for the NCP612SQ18T1?
The NCP612SQ18T1 has an absolute maximum input voltage of 6.0 V. Operation above this level risks permanent damage. For reliable long-term use, the recommended operating input range is 2.03 V to 6.0 V-ensuring regulation at full 100 mA load while maintaining margin below the absolute maximum.
Does the NCP612SQ18T1 require an external pull-up resistor on the Enable pin?
No, the NCP612SQ18T1 does not require an external pull-up resistor on the Enable pin. When unused, the Enable pin must be connected directly to Vin to ensure normal operation. The internal circuitry provides sufficient drive without external components, simplifying layout and reducing BOM count.
Can the NCP612SQ18T1 operate with a 1.0 µF ceramic output capacitor?
Yes, the NCP612SQ18T1 is explicitly characterized and stabilized for use with 1.0 µF ceramic output capacitors, including X5R/X7R dielectrics. No minimum ESR is required, and higher capacitance values (e.g., 2.2 µF or 4.7 µF) further improve load transient response and noise rejection without compromising stability.
What is the output voltage accuracy specification for the NCP612SQ18T1 over temperature?
The NCP612SQ18T1 guarantees output voltage accuracy of ±2.0% over the full operating ambient temperature range of −40°C to +85°C at 10 mA load. At 100 mA load and same temperature range, accuracy remains within ±2.0% for the 1.8 V version, as confirmed in the Electrical Characteristics table on page 3 of the datasheet.
Is thermal shutdown protection included in the NCP612SQ18T1?
Yes, the NCP612SQ18T1 includes fully integrated thermal shutdown protection that activates at approximately 160°C junction temperature. When triggered, the device disables the output and remains off until the junction cools sufficiently-preventing irreversible damage during sustained overload or poor PCB thermal design.
NCP612SQ18T1 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):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.56V @ 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)
NCP612SQ18T1 FAQ
1.How can I place an order for NCP612SQ18T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP612SQ18T1 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 NCP612SQ18T1 reliable?
The price and inventory of NCP612SQ18T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP612SQ18T1 is usually 5 days.
3.What payment methods are accepted for NCP612SQ18T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP612SQ18T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP612SQ18T1?
NCP612SQ18T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP612SQ18T1 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 NCP612SQ18T1?
For technical support, including NCP612SQ18T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP612SQ18T1 requirements.
6.How does Aetrix verify that NCP612SQ18T1 is sourced from the original manufacturer or authorized distributors?
All NCP612SQ18T1 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 NCP612SQ18T1 meets industry standards.
7.What is the process for return or replacement of NCP612SQ18T1?
All NCP612SQ18T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP612SQ18T1, 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 NCP612SQ18T1 part is unused and in its original packaging.
Return procedure for NCP612SQ18T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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