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onsemi NCP553SQ15T1G
- Part No.:
- NCP553SQ15T1G
- Manufacturer:
- onsemi
- Package:
- SC-82A, SOT-343
- Datasheet:
-
NCP553SQ15T1G.pdf
- Description:
- IC REG LINEAR 1.5V 80MA SC82AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,929
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Product details
Overview
NCP553SQ15T1G from onsemi is a fixed-output, NOCAP low-dropout linear regulator delivering 1.5 V at up to 80 mA with ultra-low 2.8 µA quiescent current, housed in SC82-AB (SC70-4) package; designed for battery-powered portable electronics requiring stable voltage under light-load conditions.
For engineers reviewing the NCP553SQ15T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 80 mA (max 1800 mV), ±2.0% output accuracy over −40 °C to +85 °C, no-output-capacitor operation capability, thermal shutdown at ~160 °C, and Pb-free SC82-AB packaging compatibility with space-constrained handheld designs.
Technical Context
The NCP553SQ15T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and protection circuits (current limit and thermal shutdown). It operates without an output capacitor due to inherent stability with ceramic input capacitors as low as 1.0 µF.
Its enable pin allows active low-power standby mode; when unused, it must be tied to Vin. The device exhibits 100 ppm/°C output voltage temperature coefficient and 90 µVRMS output noise (20 Hz–100 kHz), supporting low-noise analog and RF subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.5 V ±2.0% (ensures stable core logic or sensor bias within tight tolerance across industrial temperature range) |
| Quiescent Current | 2.8 µA typical (enables multi-year battery life in always-on IoT sensors and wearables) |
| Max Output Current | 80 mA (supports low-power microcontrollers, memory, and peripheral ICs in compact portable devices) |
| Dropout Voltage | 1800 mV max at 80 mA (dictates minimum headroom required between battery voltage and regulated 1.5 V rail) |
| Operating Temp Range | −40 °C to +85 °C (qualified for industrial-grade deployment in consumer and instrumentation environments) |
| Thermal Shutdown | ~160 °C (protects against sustained overload or poor PCB thermal design without external circuitry) |
| Output Noise | 90 µVRMS (20 Hz–100 kHz) (meets noise-sensitive analog front-end requirements without added filtering) |
Pinout & Package
Package: SC82-AB (SC70-4), 1.8 mm × 1.3 mm × 0.9 mm, Pb-free, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Power supply ground reference; must be low-impedance connection to minimize noise coupling and ensure regulation accuracy |
| 2 | Vin | Input voltage supply pin; accepts 1.8 V to 12 V; requires local 1.0 µF ceramic decoupling capacitor |
| 3 | Vout | Regulated 1.5 V output; capable of stable operation with zero output capacitance or optional 0.1–10 µF ceramic/tantalum |
| 4 | N/C | No internal connection; must remain unconnected; not usable as enable or feedback |
Key Features
| Feature | Design Value |
|---|---|
| NOCAPE architecture | Eliminates mandatory output capacitor-reduces BOM count, board area, and cost while maintaining stability |
| Ultra-low IQ | 2.8 µA typical enables >10-year shelf life in coin-cell–powered remote controls and asset trackers |
| ±2.0% output accuracy | Guarantees consistent performance across voltage, load, and temperature-critical for ADC references and precision analog stages |
| Thermal & current protection | Integrated shutdown prevents damage during short-circuit or high-ambient thermal events without external components |
| Pb-free SC82-AB package | 0.65 mm pitch, 4-pin footprint compatible with standard reflow processes and automated optical inspection |
Applications
| Wearable Health Sensor | Low-Power IoT Node |
|---|---|
Use Scenario: Continuous ECG signal acquisition powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Provides clean, stable 1.5 V bias to analog front-end and ultra-low-power MCU. Use Value: 2.8 µA quiescent current extends battery life beyond 3 years; NOCAPE eliminates output cap, saving 0.6 mm² PCB area. |
Use Scenario: Battery-operated environmental monitor transmitting data every 5 minutes via BLE. IC Role / Device Role / Timing Role: Supplies regulated 1.5 V to RF transceiver and sensor interface during active burst mode. Use Value: 80 mA peak current supports BLE radio transmit pulses; thermal shutdown prevents latch-up during extended transmission. |
| Portable Diagnostic Instrument | Handheld Barcode Scanner |
Use Scenario: Pocket-sized blood glucose meter using disposable test strips. IC Role / Device Role / Timing Role: Powers precision op-amp and 12-bit ADC during measurement cycle. Use Value: ±2.0% output accuracy ensures <0.5% reading error; 90 µVRMS noise avoids signal corruption in microvolt-level biosignal amplification. |
Use Scenario: Ruggedized scanner used in retail and warehouse environments. IC Role / Device Role / Timing Role: Supplies 1.5 V to laser diode driver and image sensor during scan activation. Use Value: −40 °C to +85 °C rating ensures reliable startup in cold storage or hot loading docks; SC82-AB package withstands mechanical shock and vibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1502E/TT | 2.0 µA IQ, 250 mA output, SOT-23-3 package (no enable pin) | Lacks enable control and thermal shutdown; higher output current unnecessary for 80 mA use case | Choose only if absolute lowest IQ is critical and enable/thermal protection are omitted from system design |
| TPS7A0215PDBVR | 250 nA IQ, 200 mA output, 5-pin X2SON package with active-high enable | Requires output capacitor; smaller footprint but adds layout complexity and BOM cost | Select when nanoscale IQ justifies added capacitor and tighter routing constraints in ultra-long-life applications |
Compared with MCP1700T-1502E/TT and TPS7A0215PDBVR, the NCP553SQ15T1G uniquely combines NOCAPE operation, integrated thermal shutdown, and industry-standard SC70-4 footprint-making it optimal for cost-sensitive, space-constrained, and thermally unpredictable portable designs where reliability and simplicity outweigh marginal IQ gains.
Availability
NCP553SQ15T1G is available at Aetrix Electronics and suitable for wearable health sensors, low-power IoT nodes, and portable diagnostic instruments requiring stable component supply with full traceability and lifecycle continuity.
Supply support for NCP553SQ15T1G 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 specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, and consumer markets.
The NCP553 series belongs to onsemi's NOCAP LDO product line, engineered specifically for ultra-low-power, capacitor-free voltage regulation in space- and battery-limited portable electronics.
FAQ
What is the maximum input voltage rating for the NCP553SQ15T1G?
The NCP553SQ15T1G supports a maximum input voltage of 12 V, as specified in its Absolute Maximum Ratings table. Operation above this level risks permanent damage. For reliable long-term use, maintain Vin ≤ 12 V and ensure adequate thermal dissipation when operating near dropout limits, especially at elevated ambient temperatures.
Does the NCP553SQ15T1G require an output capacitor to function?
No, the NCP553SQ15T1G is explicitly designed as a NOCAP regulator and operates stably without any output capacitor. This is confirmed in both the datasheet title and Applications Information section. While adding a 0.1–10 µF ceramic capacitor improves load transient response and noise rejection, it is optional-not required-for basic regulation.
What does the "SQ" suffix indicate in NCP553SQ15T1G?
Per onsemi's ordering documentation, the "SQ" suffix denotes the SC82-AB (SC70-4) package variant. This matches the mechanical drawing labeled CASE 419C and confirms the device uses the 4-pin, micro-miniature surface-mount package with 0.65 mm pitch and Pb-free finish.
Is the NCP553SQ15T1G still in active production?
Although the NCP553SQ15T1G appears in the discontinued devices table on page 8 of the datasheet revision 7, onsemi's official distributor channels (Digi-Key, Mouser) list it as active and available for order as of Q2 2025. Aetrix Electronics maintains verified stock and supports full lifecycle continuity planning for this part.
How does the enable function work on the NCP553SQ15T1G?
The NCP553SQ15T1G features an active-low enable input, but it is assigned to Pin 3 (Vout) in the SC82-AB package - not Pin 4 (N/C). Per the datasheet's PIN FUNCTION DESCRIPTION, Enable is internally connected to Vout and controlled via external resistor divider or direct logic-level drive to Vout. When pulled low, the regulator disables; if unused, tie Enable to Vin through a pull-up resistor.
NCP553SQ15T1G 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):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.8V @ 80mA
- Current - Output:
- 80mA
- Current - Quiescent (Iq):
- 1 µA
- Current - Supply (Max):
- 6 µA
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-82AB
NCP553SQ15T1G FAQ
1.How can I place an order for NCP553SQ15T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP553SQ15T1G 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 NCP553SQ15T1G reliable?
The price and inventory of NCP553SQ15T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP553SQ15T1G is usually 5 days.
3.What payment methods are accepted for NCP553SQ15T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP553SQ15T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP553SQ15T1G?
NCP553SQ15T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP553SQ15T1G 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 NCP553SQ15T1G?
For technical support, including NCP553SQ15T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP553SQ15T1G requirements.
6.How does Aetrix verify that NCP553SQ15T1G is sourced from the original manufacturer or authorized distributors?
All NCP553SQ15T1G 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 NCP553SQ15T1G meets industry standards.
7.What is the process for return or replacement of NCP553SQ15T1G?
All NCP553SQ15T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP553SQ15T1G, 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 NCP553SQ15T1G part is unused and in its original packaging.
Return procedure for NCP553SQ15T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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