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onsemi NCP612SQ25T2G
- Part No.:
- NCP612SQ25T2G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP612SQ25T2G.pdf
- Description:
- IC REG LINEAR 2.5V 100MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:2,785
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Product details
Overview
NCP612SQ25T2G from onsemi is a fixed-output CMOS low-dropout linear voltage regulator delivering 2.5 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 NCP612SQ25T2G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout performance at 100 mA load, thermal behavior in SC70-5 package, enable functionality for system-level power sequencing, and compatibility with 1.0 µF ceramic output capacitors without ESR constraints.
Technical Context
The NCP612SQ25T2G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and internal protection circuits (current limit and thermal shutdown). Its architecture enables stable regulation with minimal external components and no minimum load requirement.
It operates across −40 °C to +85 °C ambient temperature, supports input voltages from 0 V to 6.0 V, and features an active-high Enable pin with 0.95 V turn-on threshold and 0.3 V turn-off threshold - enabling precise control of output activation without external logic level translation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±2.0% over −40 °C to +85 °C and 1–100 mA load - ensures stable core/peripheral rail for low-power microcontrollers and sensors. |
| Max Output Current | 100 mA continuous - sufficient for powering single-core MCUs, RF transceivers, or sensor signal chains in compact portable devices. |
| Quiescent Current | 40 µA typical (Enable = Vin) - minimizes battery drain during standby, extending operational life in always-on wearable applications. |
| Dropout Voltage | 270 mV typical at 100 mA and 2.5 V output - allows operation from single-cell Li-ion (3.0 V min) or two-cell alkaline (3.2 V min) with margin. |
| Line Regulation | 1.0–3.0 mV/V - maintains tight output stability despite battery voltage sag or supply ripple in mobile systems. |
| Load Regulation | 0.3–0.8 mV/mA - limits output deviation during dynamic current steps (e.g., BLE radio transmit bursts), reducing need for large bulk capacitance. |
| Thermal Shutdown | Activates at ~160 °C junction temperature - protects device during sustained overload or poor PCB thermal design without external circuitry. |
Pinout & Package
Housed in the SC70-5 (SOT-353) surface-mount package - 2.0 mm × 2.1 mm footprint with 0.65 mm pitch - optimized for space-constrained portable designs and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply connection; accepts 0–6.0 V; must be decoupled with ≥1.0 µF ceramic capacitor near pin. |
| 2 | Gnd | Power ground reference; requires low-impedance PCB trace to minimize noise coupling and ensure regulation accuracy. |
| 3 | Enable | Active-high digital control input; pulls device into low-power shutdown when <0.3 V; connect to Vin if unused. |
| 4 | N/C | No internal connection; left floating or tied to Gnd - no electrical function or thermal benefit. |
| 5 | Vout | Regulated 2.5 V output; stable with 1.0 µF ceramic capacitor; supports ESR from milliohms to 5 Ω. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical enables >1-year battery life in coin-cell–powered IoT sensors with 10 µA average system current. |
| Low dropout with PMOS pass element | 270 mV at 100 mA eliminates need for boost converters in single-cell battery systems targeting 2.5 V rails. |
| No minimum load requirement | Operates stably down to 0 mA output - ideal for intermittent-load applications like wake-on-event sensor nodes. |
| Internal thermal and current protection | Self-limiting behavior under fault conditions avoids external foldback circuitry or fusing in space-limited modules. |
| Pb-free SC70-5 package | RoHS-compliant 2.0 × 2.1 mm outline supports high-density layout and automated assembly without lead-free reflow concerns. |
Applications
| Wearable Health Monitor | Bluetooth LE Sensor Node |
|---|---|
Use Scenario: Continuous ECG/PPG sensing with intermittent BLE transmission in wrist-worn form factor. IC Role / Device Role / Timing Role: Provides clean, low-noise 2.5 V supply to analog front-end and BLE SoC during active and sleep states. Use Value: 40 µA quiescent current extends CR2032 battery life beyond 12 months; SC70-5 footprint saves >1.5 mm² PCB area vs. SOT-23 alternatives. | Use Scenario: Battery-powered environmental sensor (temp/humidity/pressure) transmitting data every 5 seconds via Bluetooth Low Energy. IC Role / Device Role / Timing Role: Powers MCU and sensor ICs from single 3.0 V lithium coin cell; Enable pin synchronized with MCU wake cycle. Use Value: 270 mV dropout allows full utilization of battery voltage down to 2.75 V; no external bias resistors needed for enable control. |
| Portable Medical Diagnostic Tool | Industrial Handheld Scanner |
Use Scenario: Pocket-sized point-of-care device performing optical spectroscopy with pulsed LED drivers and ADC. IC Role / Device Role / Timing Role: Supplies precision 2.5 V reference rail to 16-bit SAR ADC and low-noise op-amps in analog signal chain. Use Value: ±2.0% output accuracy and <100 µVrms noise (100 Hz–100 kHz) preserve measurement integrity without post-calibration trimming. | Use Scenario: Ruggedized barcode scanner operating from rechargeable Li-ion pack with frequent deep discharge cycles. IC Role / Device Role / Timing Role: Generates stable 2.5 V for image sensor interface and FPGA configuration logic during variable load transients. Use Value: Load regulation of 0.3–0.8 mV/mA suppresses output droop during 50 mA laser diode pulses, preventing frame corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2502E/MB | 350 mV dropout at 250 mA; 1.8 µA quiescent current; SOT-23-5 package. | Lower IQ but higher dropout; larger footprint; rated for 250 mA - over-specified for 100 mA use cases. | Select if system requires sub-2 µA sleep current and can accommodate SOT-23 size and higher dropout margin. |
| TPS7A0525PDBVR | 170 mV dropout at 200 mA; 25 µA IQ; 1.5 V to 6.0 V input; 5-pin SOT-23 package. | Superior dropout and lower IQ, but requires external 1 µF input/output caps and lacks N/C pin - different pinout and layout. | Choose for higher efficiency in 2.5 V systems where board space permits SOT-23 and tighter dropout is critical. |
Compared with MCP1700T-2502E/MB and TPS7A0525PDBVR, the NCP612SQ25T2G offers the smallest footprint (SC70-5), guaranteed 2.5 V accuracy over industrial temperature range, and integrated N/C pin simplifying layout - making it optimal for ultra-compact, cost-sensitive, battery-life–focused designs where 100 mA output suffices.
Availability
NCP612SQ25T2G is available at Aetrix Electronics and suitable for wearable health monitors, Bluetooth LE sensor nodes, and portable medical diagnostic tools requiring stable component supply, long-term lifecycle support, and RoHS-compliant micro-packages.
Supply support for NCP612SQ25T2G 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 ultra-low-IQ linear regulator product line, engineered specifically for battery-powered portable equipment where extended runtime and minimal PCB area are primary design constraints.
FAQ
What is the maximum input voltage rating for the NCP612SQ25T2G?
The NCP612SQ25T2G 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 2.5 V output, the recommended minimum input is 2.77 V (2.5 V + 270 mV dropout), allowing use with single-cell Li-ion batteries down to end-of-discharge voltage.
Does the NCP612SQ25T2G require an external pull-up resistor on the Enable pin?
No - the NCP612SQ25T2G does not require an external pull-up resistor on the Enable pin. If unused, the datasheet explicitly states that Enable should be connected directly to Vin. The internal structure supports direct tie-to-rail operation, eliminating BOM cost and board space for discrete biasing components.
Can the NCP612SQ25T2G operate with a 1.0 µF ceramic output capacitor?
Yes - the NCP612SQ25T2G is explicitly characterized and stabilized for use with 1.0 µF ceramic capacitors (X5R/X7R dielectrics), as confirmed in both the Typical Application Diagram and Applications Information section. It imposes no minimum ESR requirement, enabling use of low-ESR MLCCs without risk of oscillation.
What is the thermal shutdown threshold of the NCP612SQ25T2G?
The NCP612SQ25T2G activates internal thermal shutdown at approximately 160 °C junction temperature, as defined in the Definitions section. This protection is non-latching - the device resumes regulation once junction temperature falls below the hysteresis threshold (~140 °C), providing robust fault recovery without manual reset.
Is the NCP612SQ25T2G suitable for automotive applications?
No - the NCP612SQ25T2G is rated for −40 °C to +85 °C ambient operation and is not AEC-Q100 qualified. For automotive use, the pin-compatible NCV612SQ25T2G variant (with NCV prefix) is specified for −40 °C to +125 °C and PPAP-capable, meeting automotive quality and reliability requirements.
NCP612SQ25T2G 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):
- 2.5V
- 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)
NCP612SQ25T2G FAQ
1.How can I place an order for NCP612SQ25T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP612SQ25T2G 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 NCP612SQ25T2G reliable?
The price and inventory of NCP612SQ25T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP612SQ25T2G is usually 5 days.
3.What payment methods are accepted for NCP612SQ25T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP612SQ25T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP612SQ25T2G?
NCP612SQ25T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP612SQ25T2G 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 NCP612SQ25T2G?
For technical support, including NCP612SQ25T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP612SQ25T2G requirements.
6.How does Aetrix verify that NCP612SQ25T2G is sourced from the original manufacturer or authorized distributors?
All NCP612SQ25T2G 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 NCP612SQ25T2G meets industry standards.
7.What is the process for return or replacement of NCP612SQ25T2G?
All NCP612SQ25T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP612SQ25T2G, 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 NCP612SQ25T2G part is unused and in its original packaging.
Return procedure for NCP612SQ25T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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