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onsemi NCP612SQ27T2G
- Part No.:
- NCP612SQ27T2G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP612SQ27T2G.pdf
- Description:
- IC REG LINEAR 2.7V 100MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:4,249
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Product details
Overview
NCP612SQ27T2G from onsemi is a fixed-output CMOS low-dropout linear voltage regulator delivering 2.7 V at up to 100 mA, featuring 40 µA typical quiescent current, 270 mV dropout at 100 mA, and ±2.0% output voltage accuracy - designed for battery-powered portable electronics requiring ultra-low power consumption and stable low-voltage rail generation.
For engineers reviewing the NCP612SQ27T2G datasheet, pinout, applications, or equivalent options, key selection criteria include SC70-5 package compatibility, enable-controlled standby mode, ceramic capacitor stability, thermal shutdown protection, and −40 °C to +85 °C industrial operating range.
Technical Context
The NCP612SQ27T2G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and internal current/temperature limit protection. It operates with no minimum load requirement and supports stable regulation using low-ESR ceramic output capacitors as small as 1.0 µF.
Its enable input provides logic-level control (VTH(HI) = 0.95 V, VTH(LO) = 0.3 V), allowing full shutdown with <1 µA disable current. The device uses internal resistor feedback to fix the 2.7 V output - no external resistors required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.7 V ±2.0% over −40 °C to +85 °C and 1–100 mA load |
| Max Output Current | 100 mA continuous; supports transient loads up to 200 mA per spec limit |
| Quiescent Current | 40 µA typical at 10 mA load; drops to <1 µA when disabled via EN pin |
| Dropout Voltage | 270 mV typical at 100 mA and 2.7 V output - enables operation from 3.0 V input |
| Line Regulation | ≤3.0 mV/V - ensures <±3 mV output shift across full 1.5–6.0 V input range |
| Load Regulation | 0.8 mV/mA - maintains tight regulation during dynamic load steps |
| Thermal Shutdown | Activates at ~160 °C junction temperature; auto-recovers after cooldown |
Pinout & Package
Housed in the micro-miniature SC70-5 (SOT-353) surface-mount package (Case 419A), the NCP612SQ27T2G measures 2.0 × 1.25 × 0.95 mm and features gull-wing leads compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Main input supply connection; accepts 0–6.0 V; requires local 1.0 µF decoupling |
| 2 | Gnd | Power ground reference; must be low-impedance path to system ground plane |
| 3 | Enable | Active-high digital control; pulls low to disable regulator and reduce IQ to <1 µA |
| 4 | N/C | No internal connection - leave unconnected or float; not tied to any circuit node |
| 5 | Vout | Regulated 2.7 V output; requires 1.0 µF ceramic capacitor placed adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical enables >1-year battery life in always-on sensor nodes |
| SC70-5 footprint | 2.0 mm × 1.25 mm area saves PCB space vs. SOT-23 in compact wearables |
| Ceramic capacitor compatible | Stable with 1.0 µF X5R/X7R ceramics - eliminates need for tantalum or high-ESR caps |
| Integrated thermal protection | Auto-shutdown at ~160 °C prevents damage during overload or poor heatsinking |
| Enable-controlled shutdown | Reduces system standby power by disabling LDO without removing input voltage |
Applications
| Wearable Health Monitor | Bluetooth LE Sensor Node |
|---|---|
Use Scenario: Continuous ECG signal acquisition powered by coin-cell battery. IC Role / Device Role / Timing Role: Provides clean, low-noise 2.7 V supply to analog front-end and ADC. Use Value: 40 µA quiescent current extends battery life beyond 18 months; SC70-5 footprint fits constrained flex PCB layout. | Use Scenario: Intermittent environmental sensing (temp/humidity) with BLE radio wake-up. IC Role / Device Role / Timing Role: Powers MCU and sensors only during active measurement cycles. Use Value: Enable pin allows full shutdown between readings, reducing average system IQ to sub-µA level. |
| Industrial Handheld Scanner | Portable Medical Glucometer |
Use Scenario: Battery-operated barcode scanner with laser diode and imager. IC Role / Device Role / Timing Role: Supplies regulated 2.7 V to image sensor and interface logic. Use Value: 270 mV dropout enables use of partially depleted 3.0 V Li-ion cells without brownout risk. | Use Scenario: Single-use disposable glucose test strip reader with LCD display. IC Role / Device Role / Timing Role: Delivers precise 2.7 V to electrochemical sensor bias and analog signal chain. Use Value: ±2.0% output accuracy ensures consistent sensor excitation voltage across temperature and battery voltage range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-IQ LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2702E/MB | Same 2.7 V output, 250 mV dropout at 100 mA, but 1.6 µA typical IQ; SC70-5 package | Better for ultra-long-life applications; lower max IOUT (250 mA vs. 100 mA) | Choose MCP1700T-2702E/MB if sub-µA quiescent current is critical and load stays ≤250 mA |
| TPS70627DBVR | 2.7 V output, 220 mV dropout at 100 mA, 1.3 µA IQ, but SOT-23-5 package (larger than SC70-5) | Higher thermal performance due to larger copper pad; not footprint-compatible | Choose TPS70627DBVR if board space allows SOT-23-5 and lowest possible dropout is required |
Compared with NCP612SQ27T2G, the MCP1700T-2702E/MB offers significantly lower quiescent current but reduced output current capability, while the TPS70627DBVR delivers lower dropout and better thermal handling in a larger package - neither is pin-compatible, requiring layout revision.
Availability
NCP612SQ27T2G is available at Aetrix Electronics and suitable for wearable health monitors, Bluetooth LE sensor nodes, and industrial handheld scanners requiring stable component supply with guaranteed long-term sourcing.
Supply support for NCP612SQ27T2G 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 sensor technologies.
The NCP612 series belongs to onsemi's low-power linear regulator product line, engineered specifically for battery-constrained portable devices needing minimal quiescent current and robust thermal protection in ultra-small packages.
FAQ
What is the maximum input voltage rating for the NCP612SQ27T2G?
The NCP612SQ27T2G supports an absolute maximum input voltage of 6.0 V. Operation above this level risks permanent damage. For reliable 2.7 V output regulation, Vin must remain ≥ (Vout + dropout), i.e., ≥2.97 V under full 100 mA load per datasheet dropout specs.
Does the NCP612SQ27T2G require an external pull-up on the Enable pin?
No - the NCP612SQ27T2G does not require an external pull-up on the Enable pin. If unused, the datasheet specifies connecting Enable directly to Vin to ensure default enabled operation. Leaving it floating is not recommended due to potential noise-induced toggling.
Can the NCP612SQ27T2G operate with a 1.0 µF ceramic output capacitor?
Yes - the NCP612SQ27T2G is explicitly designed for stability with 1.0 µF ceramic capacitors (X5R/X7R dielectrics). No minimum ESR is required, and larger values improve load transient response and noise rejection without compromising stability.
Is the NCP612SQ27T2G still in active production?
No - per the November 2025 Rev. 5 datasheet, NCP612SQ27T2G is marked as discontinued in the official ordering table (page 9). However, Aetrix Electronics maintains legacy inventory and offers lifecycle support including cross-reference assistance and last-time-buy planning for this part.
What is the thermal resistance (RJA) of the NCP612SQ27T2G in its SC70-5 package?
The NCP612SQ27T2G has a specified junction-to-ambient thermal resistance (RJA) of 300 °C/W under standard JEDEC test conditions. Actual RJA depends heavily on PCB copper area and layer stack-up; doubling the thermal pad copper can reduce RJA by ~30–40%.
NCP612SQ27T2G 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):
- 2.7V
- 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)
NCP612SQ27T2G FAQ
1.How can I place an order for NCP612SQ27T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP612SQ27T2G 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 NCP612SQ27T2G reliable?
The price and inventory of NCP612SQ27T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP612SQ27T2G is usually 5 days.
3.What payment methods are accepted for NCP612SQ27T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP612SQ27T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP612SQ27T2G?
NCP612SQ27T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP612SQ27T2G 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 NCP612SQ27T2G?
For technical support, including NCP612SQ27T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP612SQ27T2G requirements.
6.How does Aetrix verify that NCP612SQ27T2G is sourced from the original manufacturer or authorized distributors?
All NCP612SQ27T2G 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 NCP612SQ27T2G meets industry standards.
7.What is the process for return or replacement of NCP612SQ27T2G?
All NCP612SQ27T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP612SQ27T2G, 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 NCP612SQ27T2G part is unused and in its original packaging.
Return procedure for NCP612SQ27T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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