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onsemi NCP512SQ27T1G
- Part No.:
- NCP512SQ27T1G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP512SQ27T1G.pdf
- Description:
- IC REG LINEAR 2.7V 80MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:2,463
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Product details
Overview
NCP512SQ27T1G from onsemi is a fixed-output CMOS low-quiescent-current linear voltage regulator delivering 2.7 V at up to 80 mA, featuring 40 µA typical quiescent current, 200 mV typical dropout at 80 mA, and ±2.0% output voltage accuracy - designed for battery-powered portable electronics requiring ultra-low standby power.
For engineers reviewing the NCP512SQ27T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its SC-88A (SOT-353) 5-pin package, enable-controlled shutdown, −40 °C to +85 °C industrial temperature range, and compatibility with low-ESR ceramic output capacitors down to 1.0 µF.
Technical Context
The NCP512SQ27T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and thermal/current-limit protection. Its enable input provides logic-level control (VTH(en) = 1.3 V typ. high, 0.3 V max. low), and it operates with no minimum load requirement.
Designed for stability with 1.0 µF ceramic output capacitors, the device achieves 50 dB ripple rejection at 1 kHz and 180 µVRMS output noise (100 Hz–100 kHz), supporting clean power delivery in noise-sensitive analog and RF subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.7 V ±2.0% - tightly regulated rail for MCU cores or sensors requiring stable low-voltage supply |
| Max Output Current | 80 mA - sufficient for Bluetooth LE modules, PMIC sub-regulators, or sensor signal chains |
| Quiescent Current | 40 µA typical - enables multi-year battery life in always-on IoT endpoints |
| Dropout Voltage | 200 mV typical at 80 mA - allows operation from single-cell Li-ion (3.0 V min.) or two-cell alkaline (3.2 V min.) |
| Operating Temp | −40 °C to +85 °C - qualified for industrial and automotive cabin applications |
| Input Voltage Range | 0 V to 6.0 V - supports wide-input battery and adapter sources without external pre-regulation |
| Enable Threshold | 1.3 V (turn-on), ≤0.3 V (turn-off) - compatible with 1.8 V/3.3 V GPIO without level-shifting |
Pinout & Package
The NCP512SQ27T1G is housed in the SC-88A (SOT-353) 5-pin surface-mount package - a micro-miniature 2.0 mm × 2.1 mm footprint with 0.65 mm pitch, 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 be low-impedance connection to minimize noise coupling |
| 3 | Enable | Active-high digital control - pull to Vin for always-on; pull ≤0.3 V to disable output and reduce IQ to 0.1 µA |
| 4 | N/C | No internal connection - left floating or grounded per layout best practice; no electrical function |
| 5 | Vout | Regulated 2.7 V output - requires 1.0 µF ceramic capacitor (X5R/X7R) placed adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical - extends battery runtime in sleep-mode wearable devices |
| Low-dropout architecture | 200 mV @ 80 mA - maintains regulation as battery discharges below 3.0 V |
| Pb-free SC-88A package | RoHS-compliant 2.0 mm × 2.1 mm footprint - meets IPC/JEDEC standards for reflow and reliability |
| Stable with ceramic capacitors | Works with 1.0 µF X5R/X7R MLCCs - eliminates need for costly tantalum or polymer caps |
| Integrated protection | Thermal shutdown and current limiting - prevents damage during short-circuit or overtemperature events |
Applications
| Wearable Health Monitor | Bluetooth Low Energy Module |
|---|---|
Use Scenario: Continuous ECG sensing powered by coin-cell battery with multi-week operational life. IC Role / Device Role / Timing Role: Primary 2.7 V supply for analog front-end and ultra-low-power MCU. Use Value: 40 µA quiescent current enables >2-year battery life at 1 µA average system current. | Use Scenario: Compact BLE beacon transmitting sensor data every 5 seconds using CR2032 battery. IC Role / Device Role / Timing Role: Regulated 2.7 V rail for Nordic nRF52832 SoC and onboard sensors. Use Value: 200 mV dropout ensures full functionality down to 2.9 V battery voltage, maximizing usable capacity. |
| Industrial Handheld Scanner | Smart Home Sensor Node |
Use Scenario: Rugged barcode scanner operating across −20 °C to +70 °C ambient with AA battery pack. IC Role / Device Role / Timing Role: Main LDO supplying image sensor, laser driver, and ARM Cortex-M0+ processor. Use Value: −40 °C to +85 °C rating and 2.0% output accuracy ensure consistent performance across temperature extremes. | Use Scenario: Battery-powered Zigbee temperature/humidity node deployed in attic or garage environments. IC Role / Device Role / Timing Role: Power source for Si7021 sensor and EFR32MG21 SoC in intermittent wake-sleep cycles. Use Value: Enable pin allows full system shutdown between readings, reducing average current to <1 µA. |
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 at 250 mA; 1.6 µA quiescent current; SOT-23-5 package | Higher output current capability but larger footprint; lower IQ ideal for deep-sleep systems | Select when >80 mA load or sub-µA standby is required; verify PCB layout change for SOT-23-5 |
| TNIV27000000000 | 200 mV dropout at 150 mA; 50 µA IQ; same SC-88A package; ±1.5% accuracy | Near-identical form, fit, and function; tighter voltage tolerance | Drop-in alternative if tighter initial accuracy is needed; confirm enable logic compatibility |
Compared with MCP1700T-2702E/TT and TNIV27000000000, the NCP512SQ27T1G offers optimal balance of ultra-low IQ, compact SC-88A packaging, and proven industrial temperature performance - making it preferred for space- and battery-limited portable designs where 80 mA output suffices.
Availability
NCP512SQ27T1G is available at Aetrix Electronics and suitable for wearable health monitors, Bluetooth LE modules, and industrial handheld scanners requiring stable component supply with long-term lifecycle support.
Supply support for NCP512SQ27T1G 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 is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications - focused on enabling sustainable technology.
The NCP512 series belongs to onsemi's low-power linear regulator product line, engineered specifically for battery-operated portable electronics demanding minimal quiescent current and high light-load efficiency.
FAQ
What is the maximum input voltage rating for the NCP512SQ27T1G?
The NCP512SQ27T1G has an absolute maximum input voltage of 6.0 V. Exceeding this value may cause permanent damage. For reliable operation, the recommended input range is 2.9 V to 6.0 V - ensuring ≥200 mV headroom above the 2.7 V output to maintain regulation under load and temperature variation. The device includes internal protection against transient overvoltage, but sustained operation beyond 6.0 V is not supported.
Does the NCP512SQ27T1G require an external resistor network to set output voltage?
No, the NCP512SQ27T1G does not require external resistors. It is a fixed-output regulator with factory-trimmed 2.7 V output achieved via internal resistor divider and voltage reference. The output voltage is permanently set and cannot be adjusted - simplifying design, reducing BOM count, and improving accuracy versus adjustable LDOs with external feedback networks.
Can the NCP512SQ27T1G operate without an output capacitor?
No, the NCP512SQ27T1G requires a minimum 1.0 µF ceramic output capacitor (X5R or X7R dielectric) for stability and transient response. Omitting Cout risks oscillation, poor load regulation, and excessive output voltage deviation during step-load changes. The datasheet confirms stability with 1.0 µF–10 µF ceramic capacitors and explicitly states no minimum ESR requirement - enabling use of low-cost, high-reliability MLCCs.
What is the thermal shutdown threshold of the NCP512SQ27T1G?
The NCP512SQ27T1G incorporates thermal protection that activates at approximately 160 °C junction temperature, disabling the output until the die cools to a safe operating range. This feature prevents catastrophic failure during sustained overload or poor PCB thermal design. The device resumes normal operation automatically once TJ falls below the hysteresis threshold (~145 °C), and the shutdown behavior is fully characterized in the datasheet's "Thermal Protection" definition section.
Is the NCP512SQ27T1G pin-compatible with other variants in the NCP512 family?
Yes, all NCP512 variants - including NCP512SQ25T1G, NCP512SQ27T1G, and NCP512SQ33T1G - share identical SC-88A (SOT-353) pinout and package dimensions. Pin 1 is Vin, Pin 2 is GND, Pin 3 is Enable, Pin 4 is N/C, and Pin 5 is Vout across the entire series. This allows direct substitution between voltage options without PCB redesign, provided the application can accommodate the different output voltage.
NCP512SQ27T1G 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):
- 0.3V @ 80mA
- Current - Output:
- 80mA
- Current - Quiescent (Iq):
- 1 µA
- Current - Supply (Max):
- 90 µA
- PSRR:
- 50dB (1kHz)
- 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)
NCP512SQ27T1G FAQ
1.How can I place an order for NCP512SQ27T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP512SQ27T1G 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 NCP512SQ27T1G reliable?
The price and inventory of NCP512SQ27T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP512SQ27T1G is usually 5 days.
3.What payment methods are accepted for NCP512SQ27T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP512SQ27T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP512SQ27T1G?
NCP512SQ27T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP512SQ27T1G 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 NCP512SQ27T1G?
For technical support, including NCP512SQ27T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP512SQ27T1G requirements.
6.How does Aetrix verify that NCP512SQ27T1G is sourced from the original manufacturer or authorized distributors?
All NCP512SQ27T1G 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 NCP512SQ27T1G meets industry standards.
7.What is the process for return or replacement of NCP512SQ27T1G?
All NCP512SQ27T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP512SQ27T1G, 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 NCP512SQ27T1G part is unused and in its original packaging.
Return procedure for NCP512SQ27T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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