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onsemi NCP512SQ28T2G
- Part No.:
- NCP512SQ28T2G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP512SQ28T2G.pdf
- Description:
- IC REG LINEAR 2.8V 80MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:2,957
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Product details
Overview
NCP512SQ28T2G from onsemi is a fixed-output CMOS low-quiescent-current linear voltage regulator delivering 2.8 V at up to 80 mA, featuring 40 µA typical quiescent current, 200 mV dropout at 80 mA, and ±2.0% output voltage accuracy - designed for battery-powered portable electronics requiring stable low-power rail generation.
For engineers reviewing the NCP512SQ28T2G datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low IQ, SC-88A (SOT-353) package compatibility, enable-controlled standby mode, and ceramic-capacitor stability in space-constrained handheld systems.
Technical Context
The NCP512SQ28T2G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and thermal/overcurrent protection - enabling low-dropout regulation without external compensation. Its enable input supports logic-level control with 0.3 V low-threshold and 1.3 V high-threshold, allowing direct interfacing with microcontrollers.
Designed for operation across −40 °C to +85 °C ambient, it maintains 2.8 V output within ±2.0% tolerance over load (1–80 mA), line (Vin = 3.8–6.0 V), and temperature, while rejecting 50 dB ripple at 1 kHz and generating only 180 µVRMS noise (100 Hz–100 kHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.8 V ±2.0% - tightly regulated supply rail for 2.8 V logic, sensors, or RF biasing. |
| Quiescent Current | 40 µA typical - enables multi-year battery life in always-on IoT endpoints. |
| Dropout Voltage | 200 mV at 80 mA - supports regulation from 3.0 V input, extending usable battery range. |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial and consumer portable environments. |
| Package | SC-88A (SOT-353), 5-pin surface-mount - 2.1 × 1.25 × 0.95 mm footprint for compact PCB layouts. |
| Ripple Rejection | 50 dB at 1 kHz - suppresses switching noise from upstream DC/DC converters. |
| Output Noise | 180 µVRMS (100 Hz–100 kHz) - suitable for noise-sensitive analog circuitry. |
Pinout & Package
SC-88A (SOT-353) 5-pin surface-mount package with 0.65 mm pitch; thermally enhanced pad design supports 400 °C/W junction-to-ambient thermal resistance under standard PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Input power supply connection; accepts 3.0–6.0 V unregulated source. |
| 2 | GND | Power ground reference; must be low-impedance path to minimize noise coupling. |
| 3 | Enable | Active-high digital control input; pulls device into <1 µA shutdown when low. |
| 4 | N/C | No internal connection; left floating or grounded per layout best practice. |
| 5 | Vout | Stable 2.8 V regulated output; requires ≥1.0 µF ceramic capacitor for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical - reduces standby power loss by >90% vs. legacy LDOs. |
| PMOS pass element | Enables true low-dropout operation without body diode conduction during reverse polarity. |
| Enable-controlled shutdown | Reduces total system current to <1 µA when disabled - critical for wake-on-event architectures. |
| Ceramic capacitor compatible | Stable with 1.0 µF X5R/X7R MLCCs - eliminates need for costly tantalum or aluminum electrolytics. |
| Pb-free and RoHS-compliant | Meets global environmental compliance requirements without derating or process change. |
Applications
| Wearable Health Monitor | Bluetooth LE Sensor Node |
|---|---|
|
Use Scenario: Continuous ECG/PPG signal acquisition powered by coin-cell battery. IC Role / Device Role / Timing Role: Primary 2.8 V analog front-end supply with enable-synchronized sleep/wake cycles. Use Value: 40 µA IQ extends battery life beyond 2 years; 200 mV dropout allows full utilization of CR2032 voltage range (3.0–2.0 V). |
Use Scenario: Ultra-low-power BLE beacon transmitting periodic temperature/humidity data. IC Role / Device Role / Timing Role: Regulated 2.8 V rail for BLE SoC and digital sensor interface during active transmission bursts. Use Value: 50 dB ripple rejection prevents RF interference from DC/DC converter noise; fast load transient response maintains voltage during 15 mA TX peaks. |
| Industrial Handheld Scanner | Smart Home Motion Detector |
|
Use Scenario: Ruggedized barcode scanner operating in warehouse environments (−20 °C to +60 °C). IC Role / Device Role / Timing Role: Main 2.8 V supply for laser driver, image sensor, and MCU core logic. Use Value: −40 °C to +85 °C rating ensures reliable startup and regulation across temperature extremes; ±2.0% accuracy guarantees consistent ADC reference performance. |
Use Scenario: Battery-powered PIR-based occupancy sensor with 10-year target lifetime. IC Role / Device Role / Timing Role: Always-on 2.8 V supply for PIR signal conditioning and ultra-low-power MCU in deep-sleep mode. Use Value: 180 µVRMS output noise avoids false triggers from analog signal corruption; N/C pin simplifies PCB routing in dense sensor modules. |
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-2802E/TT | 3.0 µA IQ, 6 V max Vin, 250 mV dropout at 250 mA - lower IQ but higher dropout and larger SOT-23-3 package. | Preferred for sub-µA standby systems where size is secondary to ultra-low leakage. | Select when <5 µA IQ outweighs 200 mV dropout advantage and SC-88A footprint constraints. |
| TNIV512SQ28T2G | Same SC-88A package and 2.8 V output, but 60 µA IQ and 250 mV dropout - non-onsemi second-source variant with relaxed specs. | Suitable for cost-sensitive designs where 20 µA IQ margin and 50 mV dropout penalty are acceptable. | Choose for dual-sourcing flexibility where minor performance trade-offs are permitted in volume production. |
Compared with MCP1700T-2802E/TT and TNIV512SQ28T2G, the NCP512SQ28T2G delivers optimal balance of ultra-low IQ, minimal dropout, and miniature SC-88A packaging - making it the preferred choice for space- and battery-life-critical portable designs requiring precise 2.8 V regulation.
Availability
NCP512SQ28T2G is available at Aetrix Electronics and suitable for wearable health monitors, Bluetooth LE sensor nodes, and industrial handheld scanners requiring stable component supply with long-term lifecycle assurance.
Supply support for NCP512SQ28T2G 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, delivering silicon solutions for automotive, industrial, cloud, and IoT applications.
The NCP512 series belongs to onsemi's precision low-power analog portfolio, engineered specifically for battery-operated portable devices demanding ultra-low quiescent current and miniature packaging without sacrificing regulation accuracy or transient performance.
FAQ
What is the maximum input voltage rating for the NCP512SQ28T2G?
The NCP512SQ28T2G has an absolute maximum input voltage of 6.0 V. Operation above this level risks permanent damage. For reliable 2.8 V output regulation, the recommended input range is 3.8 V to 6.0 V - ensuring sufficient headroom above dropout while maintaining thermal safety under 80 mA load.
Does the NCP512SQ28T2G require an external pull-up resistor on the Enable pin?
No, the NCP512SQ28T2G does not require an external pull-up on the Enable pin. When unused, the Enable pin must be directly connected to Vin to ensure continuous operation. The internal logic is designed for direct Vin tie-off, eliminating external components and reducing BOM count.
Can the NCP512SQ28T2G operate with a 1.0 µF ceramic output capacitor?
Yes, the NCP512SQ28T2G is explicitly characterized and stabilized with a 1.0 µF X5R or X7R ceramic capacitor (e.g., TDK C1608X5R1A105K). Unlike many LDOs, it imposes no minimum ESR requirement, enabling use of low-cost, small-footprint MLCCs without risk of oscillation.
What is the thermal shutdown threshold of the NCP512SQ28T2G?
The NCP512SQ28T2G incorporates thermal protection that activates at approximately 160 °C junction temperature. Once triggered, the device shuts down until junction temperature falls below the hysteresis threshold (~140 °C), preventing damage during sustained overload or poor PCB thermal design.
Is the NCP512SQ28T2G pin-compatible with other variants in the NCP512 family?
Yes, all NCP512 variants - including NCP512SQ28T2G, NCP512SQ30T2G, and NCP512SQ33T2G - share identical SC-88A (SOT-353) pinout and package dimensions. This allows drop-in replacement across output voltages without PCB redesign, provided input/output capacitor values remain appropriate for the new Vout.
NCP512SQ28T2G 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):
- 2.8V
- 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)
NCP512SQ28T2G FAQ
1.How can I place an order for NCP512SQ28T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP512SQ28T2G 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 NCP512SQ28T2G reliable?
The price and inventory of NCP512SQ28T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP512SQ28T2G is usually 5 days.
3.What payment methods are accepted for NCP512SQ28T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP512SQ28T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP512SQ28T2G?
NCP512SQ28T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP512SQ28T2G 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 NCP512SQ28T2G?
For technical support, including NCP512SQ28T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP512SQ28T2G requirements.
6.How does Aetrix verify that NCP512SQ28T2G is sourced from the original manufacturer or authorized distributors?
All NCP512SQ28T2G 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 NCP512SQ28T2G meets industry standards.
7.What is the process for return or replacement of NCP512SQ28T2G?
All NCP512SQ28T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP512SQ28T2G, 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 NCP512SQ28T2G part is unused and in its original packaging.
Return procedure for NCP512SQ28T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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