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onsemi NCP612SQ27T1G
- Part No.:
- NCP612SQ27T1G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP612SQ27T1G.pdf
- Description:
- IC REG LINEAR 2.7V 100MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:3,542
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Product details
Overview
NCP612SQ27T1G 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 and 230 mV dropout at full load - designed for battery-powered portable electronics requiring stable, ultra-low-power regulation.
For engineers reviewing the NCP612SQ27T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its SC70-5 package footprint, enable-controlled standby mode, ±2.0% output accuracy over −40 °C to +85 °C, and compatibility with low-ESR ceramic capacitors without stability compensation.
Technical Context
The NCP612SQ27T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and thermal/overcurrent protection - enabling low-noise, high-PSRR regulation without external compensation. Its enable input provides logic-level control of output state, with threshold voltages of 0.95 V (turn-on) and 0.3 V (turn-off).
Designed for handheld and portable systems, it operates across 0–6.0 V input while maintaining regulation down to 2.7 V output, with line regulation of ≤3.0 mV/V and load regulation of ≤0.8 mV/mA - supporting dynamic load transients in compact, thermally constrained layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.7 V ±2.0% over −40 °C to +85 °C - ensures stable core/peripheral rail for low-voltage microcontrollers and sensors. |
| Max Output Current | 100 mA continuous - sufficient for single-rail MCU subsystems, RF front-ends, or sensor signal chains. |
| Dropout Voltage | 230 mV at 100 mA - enables operation from 2.93 V input, extending battery runtime in single-cell Li-ion or alkaline systems. |
| Quiescent Current | 40 µA typical - minimizes standby power loss, critical for always-on wake-up circuits and IoT edge nodes. |
| Enable Threshold | 0.95 V (rising), 0.3 V (falling) - compatible with 1.8 V and 3.3 V GPIOs without level-shifting. |
| Noise Density | 100 µVRMS (100 Hz–100 kHz) - supports noise-sensitive analog sections like ADC references or audio codecs. |
| Package | SC70-5 (SOT-353) - 2.0 × 1.25 × 0.9 mm footprint ideal for space-constrained portable PCBs. |
Pinout & Package
SC70-5 surface-mount package (Case 419A), 1.25 mm pitch, 2.0 mm × 1.25 mm body size, 0.9 mm max height - optimized for automated placement and high-density routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply - accepts 0–6.0 V; requires local 1.0 µF decoupling capacitor per layout guidelines. |
| 2 | Gnd | Power ground reference - must be connected to low-impedance PCB ground plane to ensure noise immunity and thermal performance. |
| 3 | Enable | Active-high digital control - pulls low to disable output and reduce IQ to <1 µA; connect to Vin if unused. |
| 4 | N/C | No internal connection - left floating; no PCB trace or pad required. |
| 5 | Vout | Regulated 2.7 V output - drives load directly; requires ≥1.0 µF ceramic output capacitor for transient stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical - extends battery life in sleep-mode applications such as wearable health monitors and remote sensors. |
| Low dropout with PMOS pass device | 230 mV @ 100 mA - eliminates need for higher-input-voltage rails, simplifying power architecture in single-cell designs. |
| Stable with ceramic capacitors | No ESR requirement - allows use of small, low-cost 0402/0603 X5R/X7R MLCCs without phase-margin risk. |
| Integrated protection | Thermal shutdown (160 °C) and current limit (≥150 mA) - prevents damage during overload or poor heatsinking conditions. |
| Pb-free and RoHS-compliant | SC70-5 package with "G" suffix - meets global environmental compliance requirements for consumer and industrial shipments. |
Applications
| Cellular Phone Power Management | Portable Medical Sensor Module |
|---|---|
|
Use Scenario: Supplying 2.7 V bias to baseband processor I/O banks and RF transceiver LNA stages in slim smartphone designs. IC Role / Device Role / Timing Role: Low-noise, enable-controlled LDO providing clean, sequenced power to mixed-signal subsystems. Use Value: 40 µA IQ and 230 mV dropout extend usable battery range by >12% versus legacy regulators in 3.7 V Li-ion discharge profiles. |
Use Scenario: Powering ultra-low-power biosensor ASICs (e.g., ECG/PPG front-ends) in disposable patch monitors. IC Role / Device Role / Timing Role: Primary regulated rail for analog signal chain and BLE SoC, activated only during measurement bursts. Use Value: Enable pin reduces system standby current to sub-µA levels, enabling multi-week operation on coin-cell batteries. |
| Handheld Test Instrument | Digital Camera Image Sensor Bias |
|
Use Scenario: Generating stable 2.7 V reference for precision ADCs and DACs in portable multimeters and oscilloscope probes. IC Role / Device Role / Timing Role: Low-noise voltage source minimizing code spread and offset drift in 16-bit data converters. Use Value: 100 µVRMS output noise and ±2.0% accuracy maintain ENOB >14.5 bits across temperature and line/load variations. |
Use Scenario: Supplying 2.7 V to CMOS image sensor analog blocks (pixel array bias, column amplifiers) in compact action cameras. IC Role / Device Role / Timing Role: Fast-transient LDO responding to frame-rate load steps without droop or overshoot. Use Value: Load transient response <50 mV deviation at 60 mA step (10–90%) enables artifact-free image capture at 60 fps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2702E/TT | 250 mV dropout @ 250 mA, 1.6 µA IQ (shutdown), SC-70-5 package - higher current but lower IQ in shutdown. | Optimized for intermittent duty-cycle loads; lacks enable threshold compatibility with 1.8 V logic. | Select when >100 mA peak current or sub-µA shutdown is required; verify enable interface voltage compatibility. |
| TCS2117-2.7 | 200 mV dropout @ 150 mA, 50 µA IQ, SOT-23-5 package - lower dropout but larger footprint and higher quiescent current. | Suitable for higher-current sensor hubs; not SC70-5 compatible - requires PCB redesign. | Choose for improved thermal margin in sustained 120 mA loads; avoid if board area or 0.95 V enable threshold is critical. |
Compared with MCP1700T-2702E/TT and TCS2117-2.7, the NCP612SQ27T1G offers the tightest combination of SC70-5 footprint, 0.95 V enable threshold, and 40 µA operating IQ - making it optimal for space- and battery-life-constrained portable designs where precise logic-level control and minimal board real estate are mandatory.
Availability
NCP612SQ27T1G is available at Aetrix Electronics and suitable for cellular phones, portable medical sensors, and handheld test instruments requiring stable component supply, long-lifecycle support, and Pb-free compliance.
Supply support for NCP612SQ27T1G 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 specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The NCP612SQ27T1G belongs to the NCP612 series of ultra-low-IQ LDOs engineered specifically for battery-powered portable electronics - prioritizing minimal standby consumption, small form factor, and robust transient performance in thermally limited enclosures.
FAQ
What is the maximum input voltage rating for the NCP612SQ27T1G?
The NCP612SQ27T1G supports an absolute maximum input voltage of 6.0 V, as specified in the Maximum Ratings table. Operation above this level risks permanent damage. For reliable 2.7 V output regulation, minimum input is 2.93 V (2.7 V + 230 mV dropout), and recommended operating range is 3.0–5.5 V to balance efficiency and headroom.
Does the NCP612SQ27T1G require external compensation components?
No, the NCP612SQ27T1G is internally compensated and stable with 1.0 µF ceramic output capacitors - no ESR requirements or external resistors/capacitors needed. This simplifies design and reduces BOM count, confirmed by Figure 1's typical application circuit and Section 8's capacitor recommendations.
What is the thermal shutdown threshold for the NCP612SQ27T1G?
The NCP612SQ27T1G features integrated thermal protection that activates at approximately 160 °C junction temperature, disabling the output until cooldown. This safeguard prevents failure under sustained overload or inadequate PCB copper pour, as documented in the Definitions section (page 7) and Electrical Characteristics tables.
Can the NCP612SQ27T1G be used with a 1.8 V GPIO to control the Enable pin?
Yes - the NCP612SQ27T1G's enable threshold is 0.95 V (rising) and 0.3 V (falling), making it fully compatible with 1.8 V logic outputs. A 1.8 V GPIO pulled high will reliably turn on the regulator; pulled low (≤0.3 V) ensures full disable, verified in the PIN FUNCTION DESCRIPTION (page 2) and Electrical Characteristics (page 4).
Is the NCP612SQ27T1G still in active production or discontinued?
The NCP612SQ27T1G remains active and available - unlike several variants marked "DISCONTINUED" in the Ordering Information table (page 9), this specific part number (NCP612SQ27T1G) is not listed among discontinued devices and is supported with current datasheet revision 5 (November 2025).
NCP612SQ27T1G 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)
NCP612SQ27T1G FAQ
1.How can I place an order for NCP612SQ27T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP612SQ27T1G 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 NCP612SQ27T1G reliable?
The price and inventory of NCP612SQ27T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP612SQ27T1G is usually 5 days.
3.What payment methods are accepted for NCP612SQ27T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP612SQ27T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP612SQ27T1G?
NCP612SQ27T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP612SQ27T1G 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 NCP612SQ27T1G?
For technical support, including NCP612SQ27T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP612SQ27T1G requirements.
6.How does Aetrix verify that NCP612SQ27T1G is sourced from the original manufacturer or authorized distributors?
All NCP612SQ27T1G 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 NCP612SQ27T1G meets industry standards.
7.What is the process for return or replacement of NCP612SQ27T1G?
All NCP612SQ27T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP612SQ27T1G, 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 NCP612SQ27T1G part is unused and in its original packaging.
Return procedure for NCP612SQ27T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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