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onsemi NCP662SQ27T1G
- Part No.:
- NCP662SQ27T1G
- Manufacturer:
- onsemi
- Package:
- SC-82A, SOT-343
- Datasheet:
-
NCP662SQ27T1G.pdf
- Description:
- IC REG LINEAR 2.7V 100MA SC82AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,596
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Product details
Overview
NCP662SQ27T1G from onsemi is a fixed-output, CMOS-based low-dropout linear regulator delivering 2.7 V at up to 100 mA with ultra-low quiescent current (2.5 µA typical), integrated enable control, and ±2.0% output voltage accuracy over −40 °C to +85 °C. It serves as a primary power supply for low-power microcontrollers and sensors in portable instrumentation.
For engineers reviewing the NCP662SQ27T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 100 mA (280 mV max), thermal shutdown protection, SC-82AB package compatibility, and enable logic threshold (1.3 V high / 0.5 V low) for battery-aware system control.
Technical Context
The NCP662SQ27T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and enable-input logic circuitry - enabling ON/OFF control without external components. Its architecture supports stable operation with ceramic output capacitors as low as 0.1 µF and tolerates input voltages up to 6.0 V.
It features internal current limit (150–600 mA depending on VOUT), thermal shutdown activation at ~160 °C, and output voltage temperature coefficient of 100 ppm/°C. Line regulation is ≤20 mV across 1.5–4.4 V input range, and load regulation remains ≤40 mV from 10 mA to 100 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.7 V ±2.0% (ensures stable bias for 2.7 V I/O domains and low-voltage MCUs) |
| Max Output Current | 100 mA (supports single-core microcontrollers, sensor interfaces, and RF front-end biasing) |
| Quiescent Current | 2.5 µA typical (enables >1-year battery life in always-on sensor nodes with 200 mAh coin cell) |
| Dropout Voltage | 280 mV max at 100 mA (allows operation down to 2.98 V input when VOUT = 2.7 V) |
| Enable Threshold | VTH(HI) = 1.3 V, VTH(LO) = 0.5 V (compatible with 1.8 V and 3.3 V GPIO control without level shifters) |
| Operating Temp | −40 °C to +85 °C (suitable for industrial handhelds and consumer-grade automotive cabin modules) |
| Thermal Shutdown | ~160 °C (prevents permanent damage during sustained overload or poor PCB thermal design) |
Pinout & Package
The NCP662SQ27T1G is housed in the SC-82AB (Case 419C) surface-mount package - a 4-pin, 2.0 × 1.25 mm micro-miniature outline with 0.65 mm pitch and exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Power ground reference; must be low-impedance connection to minimize noise coupling and ensure regulation stability |
| 2 | Vin | Input supply pin; accepts 2.98–6.0 V; requires local 1.0 µF ceramic decoupling capacitor |
| 3 | Vout | Regulated 2.7 V output; supports 0.1–1.0 µF ceramic output capacitor for transient response and noise filtering |
| 4 | Enable | Digital control input; pulls high to enable regulator, low to disable (IQ drops to 0.1 µA); unused pin must tie to Vin |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 2.5 µA typical enables multi-year operation in energy-harvesting and battery-backed IoT endpoints |
| Enable pin integration | Eliminates need for external MOSFET or logic-level shutoff circuit in sleep-mode power sequencing |
| Ceramic capacitor compatibility | Stable with 0.1 µF minimum COUT, reducing BOM cost and board area vs. tantalum or electrolytic alternatives |
| ±2.0% output accuracy | Meets tight tolerance requirements for ADC reference rails and analog sensor signal chains |
| Internal thermal & current protection | Self-protecting under short-circuit or thermal overload - no external foldback or shutdown circuitry required |
Applications
| Portable Medical Sensors | Industrial Handheld Meters |
|---|---|
Use Scenario: Continuous glucose monitor with Bluetooth LE radio and electrochemical sensor front-end. IC Role / Device Role / Timing Role: Primary 2.7 V supply for MCU, BLE SoC, and analog front-end amplifier. Use Value: 2.5 µA quiescent current extends disposable sensor patch lifetime beyond 7 days on a 120 mAh Li-SOCl₂ cell. |
Use Scenario: Ruggedized multimeter with LCD display, isolated UART, and precision ADC. IC Role / Device Role / Timing Role: Clean 2.7 V rail for 16-bit SAR ADC reference and low-noise op-amp biasing. Use Value: ±2.0% output accuracy and 100 ppm/°C drift maintain <0.1% measurement linearity across −10 °C to +50 °C operating range. |
| Automotive Cabin Infotainment | Wireless Sensor Nodes |
Use Scenario: Touchscreen controller module in center console with ambient light sensing and haptic feedback. IC Role / Device Role / Timing Role: Secondary regulated supply for capacitive touch IC and optical sensor interface. Use Value: Enable pin allows synchronized power-down during vehicle sleep mode, reducing parasitic drain below 1 µA. |
Use Scenario: Zigbee-enabled temperature/humidity node powered by AA batteries. IC Role / Device Role / Timing Role: Standby power source for MCU and RF transceiver during deep-sleep intervals. Use Value: 280 mV dropout enables usable runtime down to 2.98 V battery voltage, extending operational window by ~15% vs. higher-dropout alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV662SQ27T1G | Same electrical specs but AEC-Q100 qualified, −40 °C to +125 °C operating range, automotive PPAP capable | Required for under-hood or infotainment head-unit designs needing automotive qualification | Select NCV662SQ27T1G only if AEC-Q100 compliance and extended temperature grade are mandatory |
| MCP1700T-2702E/MB | 250 mV dropout at 250 mA, 1.6 µA IQ, SOT-23-5 package, no enable pin | Lacks enable control; requires external FET for ON/OFF sequencing; higher max current but larger footprint | Choose MCP1700T-2702E/MB only when enable functionality is unnecessary and 250 mA output is required |
Compared with NCP662SQ27T1G, NCV662SQ27T1G adds automotive qualification at identical electrical performance, while MCP1700T-2702E/MB trades enable capability for lower IQ and higher current - making NCP662SQ27T1G optimal for space-constrained, enable-driven portable systems requiring guaranteed 2.7 V ±2% regulation.
Availability
NCP662SQ27T1G is available at Aetrix Electronics and suitable for portable medical sensors, industrial handheld meters, automotive cabin infotainment modules, and wireless sensor nodes requiring stable component supply, long-lifecycle support, and Pb-free compliance.
Supply support for NCP662SQ27T1G 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 NCP662SQ27T1G belongs to onsemi's NCP662/NCP663 family of ultra-low-IQ LDOs designed specifically for battery-powered portable instrumentation and handheld communication equipment where standby current and small footprint are critical.
FAQ
What is the maximum input voltage rating for the NCP662SQ27T1G?
The NCP662SQ27T1G has an absolute maximum input voltage (VIN) of 6.0 V. Exceeding this rating may cause permanent damage. For reliable operation, VIN should remain within 2.98 V (VOUT + dropout) to 6.0 V, with recommended derating above 5.5 V in high-temperature environments. The NCP662SQ27T1G datasheet specifies this limit in the Maximum Ratings table on page 2.
Does the NCP662SQ27T1G require an external pull-up resistor on the Enable pin?
No - the NCP662SQ27T1G does not require an external pull-up resistor on the Enable pin. When unused, the Enable pin must be directly connected to VIN to ensure the device remains enabled. Internal circuitry provides no weak pull-up; leaving Enable floating risks unpredictable behavior or unintended shutdown. This requirement is explicitly stated in the PIN FUNCTION DESCRIPTION section of the NCP662SQ27T1G datasheet.
Can the NCP662SQ27T1G operate with a 0.1 µF ceramic output capacitor?
Yes - the NCP662SQ27T1G is fully stable with a minimum 0.1 µF ceramic output capacitor, as confirmed in the datasheet's "This series has been designed to be used with low cost ceramic capacitors and requires a minimum output capacitor of 0.1 µF." Larger values (e.g., 1.0 µF) improve load transient response and noise rejection, but 0.1 µF meets all stability requirements for standard applications.
What is the dropout voltage of the NCP662SQ27T1G at 100 mA load?
The dropout voltage of the NCP662SQ27T1G is specified as 280 mV maximum at 100 mA output current and −40 °C to +85 °C ambient temperature, measured when VOUT drops 3.0% below nominal (i.e., to 2.619 V). This value appears in the ELECTRICAL CHARACTERISTICS table on page 3 of the NCP662SQ27T1G datasheet under "Vin-Vout" for the 2.7 V variant.
Is the NCP662SQ27T1G pin-compatible with other variants in the NCP662 series?
Yes - all NCP662 variants (e.g., NCP662SQ15T1G, NCP662SQ33T1G) share identical SC-82AB package pinout and terminal functions (GND, Vin, Vout, Enable). Only the output voltage and marking code differ. This allows drop-in replacement across the series when adjusting supply rails, provided thermal and layout constraints remain unchanged for the new VOUT.
NCP662SQ27T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 0.5V @ 100mA
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 1 µA
- Current - Supply (Max):
- 6 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-82AB
NCP662SQ27T1G FAQ
1.How can I place an order for NCP662SQ27T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP662SQ27T1G 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 NCP662SQ27T1G reliable?
The price and inventory of NCP662SQ27T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP662SQ27T1G is usually 5 days.
3.What payment methods are accepted for NCP662SQ27T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP662SQ27T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP662SQ27T1G?
NCP662SQ27T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP662SQ27T1G 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 NCP662SQ27T1G?
For technical support, including NCP662SQ27T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP662SQ27T1G requirements.
6.How does Aetrix verify that NCP662SQ27T1G is sourced from the original manufacturer or authorized distributors?
All NCP662SQ27T1G 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 NCP662SQ27T1G meets industry standards.
7.What is the process for return or replacement of NCP662SQ27T1G?
All NCP662SQ27T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP662SQ27T1G, 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 NCP662SQ27T1G part is unused and in its original packaging.
Return procedure for NCP662SQ27T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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