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onsemi NCP552SQ28T1
- Part No.:
- NCP552SQ28T1
- Manufacturer:
- onsemi
- Package:
- SC-82A, SOT-343
- Datasheet:
-
NCP552SQ28T1.pdf
- Description:
- IC REG LINEAR 2.8V 80MA SC82AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,510
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Product details
Overview
NCP552SQ28T1 from onsemi is a fixed-output 2.8 V, 80 mA CMOS low-IQ NOCAP linear regulator with enable control, designed for battery-powered portable electronics requiring ultra-low quiescent current (2.8 µA typical), ±2.0% output voltage accuracy, and operation without an output capacitor. It serves as a primary power rail for low-power microcontrollers and sensors in handheld instruments.
For engineers reviewing the NCP552SQ28T1 datasheet, pinout, applications, or equivalent options, key selection criteria include its SC82-AB (SC70-4) package, 730 mV dropout at 80 mA, −40°C to +85°C operating range, and enable-input logic interface for system-level power sequencing.
Technical Context
The NCP552SQ28T1 integrates a PMOS pass transistor, precision voltage reference, error amplifier, and thermal/overcurrent protection circuits. Its NOCAP architecture eliminates mandatory output capacitance, enabling stable regulation with only input decoupling (1 µF ceramic).
Enable functionality is implemented via a dedicated logic-controlled input with 1.3 V turn-on threshold and 0.3 V turn-off threshold; unused Enable must be tied to Vin. Dropout voltage is specified at 730 mV (typical) and 1200 mV (max) at 80 mA and −40°C to +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±2.0% at 10 mA, ensuring stable MCU core supply under load and temperature variation. |
| Quiescent Current | 2.8 µA typical (Enable = Vin), enabling multi-year battery life in always-on sensor nodes. |
| Dropout Voltage | 730 mV typical at 80 mA, allowing 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, suitable for consumer and industrial portable equipment without derating. |
| Input Voltage Range | Up to 12 V, supporting wide-input battery systems including 9 V PP3 and boosted rails. |
| Output Noise | 90 µVRMS (20 Hz–100 kHz), low enough for analog sensor front-ends and RF subsystems. |
| Enable Threshold | 1.3 V (turn-on), 0.3 V (turn-off), compatible with 1.8 V and 3.3 V GPIO without level-shifting. |
Pinout & Package
The NCP552SQ28T1 is housed in the SC82-AB (SC70-4) surface-mount package - a 1.8 mm × 1.15 mm × 0.8 mm micro-miniature leadless package with 4 terminals, optimized for space-constrained portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Power supply ground reference; must be low-impedance connection to minimize noise coupling and thermal resistance. |
| 2 | Vin | Positive input supply; accepts up to 12 V; requires local 1 µF ceramic decoupling per layout guidelines. |
| 3 | Vout | Regulated 2.8 V output; capable of delivering 80 mA continuously without external capacitor (NOCAP mode). |
| 4 | Enable | Active-high digital control input; pulls device into ultra-low-IQ standby (<0.1 µA) when driven ≤0.3 V. |
Key Features
| Feature | Design Value |
|---|---|
| NOCAP operation | Stable regulation with zero output capacitance-reduces BOM count, board area, and cost in space-limited designs. |
| Ultra-low IQ | 2.8 µA typical quiescent current enables >10-year shelf life in coin-cell–powered IoT endpoints. |
| Enable control | Dedicated logic-compatible pin allows precise system-level power gating and wake-up sequencing without external MOSFETs. |
| ±2.0% output accuracy | Tight initial tolerance ensures reliable operation of 2.8 V–biased ADC references and low-voltage logic without post-regulation trimming. |
| Thermal shutdown | Internal protection activates at ~160°C junction temperature, preventing damage during transient overloads or poor heatsinking. |
Applications
| Handheld Medical Sensors | Wireless Remote Controls |
|---|---|
Use Scenario: Battery-powered pulse oximeter with Bluetooth LE connectivity and continuous 24/7 monitoring. IC Role / Device Role / Timing Role: Primary 2.8 V supply for analog front-end (AFE), MCU, and BLE radio transceiver. Use Value: Ultra-low 2.8 µA quiescent current extends CR2032 battery life beyond 2 years; NOCAP operation eliminates capacitor footprint in tight sensor module. | Use Scenario: Sub-GHz RF remote with motion-triggered wake-up and multi-button UI. IC Role / Device Role / Timing Role: Always-on 2.8 V rail for accelerometer, MCU sleep domain, and RF receiver LNA biasing. Use Value: Enable pin synchronizes power to motion detection event, reducing average system current to <1 µA in standby. |
| Portable Barcode Scanners | Smart Wearable Trackers |
Use Scenario: Pocket-sized laser scanner powered by single 3.7 V Li-ion cell with intermittent high-current laser pulses. IC Role / Device Role / Timing Role: Stable 2.8 V supply for CMOS image sensor, laser driver control logic, and USB interface PHY. Use Value: 730 mV dropout enables full 2.8 V regulation down to 3.53 V battery voltage, maximizing usable cell capacity. | Use Scenario: Fitness band with optical heart-rate monitor, accelerometer, and OLED display. IC Role / Device Role / Timing Role: Main 2.8 V rail for sensor hub MCU, photodiode signal chain, and display controller. Use Value: 90 µVRMS output noise prevents interference in low-amplitude PPG signal acquisition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-IQ linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2802E/TT | 2.8 V fixed, 250 nA IQ, no enable pin, SOT-23-3 package. | Lacks ON/OFF control; requires external switch for deep-sleep gating. | Select when lowest possible IQ is critical and enable functionality is handled externally. |
| Torex XC6206P282MR-G | 2.8 V fixed, 1 µA IQ, no enable, SOT-23-3, 300 mA output capability. | Higher output current but no enable; larger package than SC70-4. | Select when higher load current (>80 mA) is needed and board space permits SOT-23-3. |
Compared with MCP1700T-2802E/TT and XC6206P282MR-G, the NCP552SQ28T1 uniquely combines ultra-low IQ, integrated enable, NOCAP operation, and SC70-4 footprint-making it optimal for compact, battery-gated portable systems where both standby efficiency and board area are constrained.
Availability
NCP552SQ28T1 is available at Aetrix Electronics and suitable for handheld medical sensors, wireless remote controls, and portable barcode scanners requiring stable component supply across long production cycles and evolving regulatory requirements.
Supply support for NCP552SQ28T1 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 NCP552SQ28T1 belongs to onsemi's NOCAP low-IQ linear regulator product line, engineered specifically for ultra-long-life battery-powered portable devices where minimal board area and maximum runtime are design priorities.
FAQ
What is the maximum input voltage rating for the NCP552SQ28T1?
The NCP552SQ28T1 has an absolute maximum input voltage rating of 12 V, as specified in the Maximum Ratings table. Operation above this voltage risks permanent damage. For reliable long-term use, design with a 10–20% margin-e.g., limit Vin to ≤9.6 V in 12 V nominal systems with transient suppression.
Does the NCP552SQ28T1 require an output capacitor to operate stably?
No, the NCP552SQ28T1 is a NOCAP regulator and operates stably without any output capacitor. This is confirmed in the datasheet's Applications Information section and Figure 1 schematic. An output capacitor may be added to improve load transient response or reduce noise, but it is not required for stability.
What is the dropout voltage of the NCP552SQ28T1 at 80 mA and room temperature?
The typical dropout voltage of the NCP552SQ28T1 at 80 mA and 25°C is 730 mV, with a maximum of 1200 mV across the full −40°C to +125°C junction temperature range. This value is measured when Vout drops 3.0% below nominal (to 2.716 V), per the Electrical Characteristics table.
How does the Enable pin function on the NCP552SQ28T1?
The Enable pin on the NCP552SQ28T1 is active-high: the device regulates when Enable ≥1.3 V (typical), and enters ultra-low-IQ standby (<0.1 µA) when Enable ≤0.3 V (typical). If unused, Enable must be tied directly to Vin-floating or high-impedance connections are not permitted per datasheet guidance.
What package type and dimensions does the NCP552SQ28T1 use?
The NCP552SQ28T1 uses the SC82-AB (also labeled SC70-4) package: a 4-terminal, leadless surface-mount package measuring 1.8 mm × 1.15 mm × 0.8 mm. Pin 1 is GND (bottom-left corner when marking side faces up), with standard SC70 pinout orientation confirmed in the Pin Connections diagram on page 6 of the datasheet.
NCP552SQ28T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- NOCAP™
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 12V
- Voltage - Output (Min/Fixed):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.2V @ 80mA
- Current - Output:
- 80mA
- 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
NCP552SQ28T1 FAQ
1.How can I place an order for NCP552SQ28T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP552SQ28T1 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 NCP552SQ28T1 reliable?
The price and inventory of NCP552SQ28T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP552SQ28T1 is usually 5 days.
3.What payment methods are accepted for NCP552SQ28T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP552SQ28T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP552SQ28T1?
NCP552SQ28T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP552SQ28T1 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 NCP552SQ28T1?
For technical support, including NCP552SQ28T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP552SQ28T1 requirements.
6.How does Aetrix verify that NCP552SQ28T1 is sourced from the original manufacturer or authorized distributors?
All NCP552SQ28T1 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 NCP552SQ28T1 meets industry standards.
7.What is the process for return or replacement of NCP552SQ28T1?
All NCP552SQ28T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP552SQ28T1, 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 NCP552SQ28T1 part is unused and in its original packaging.
Return procedure for NCP552SQ28T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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