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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

onsemi NCP502SQ15T2G

Name: NCP502SQ15T2G
Brand: onsemi
SKU: NCP502SQ15T2G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NCP502SQ15T2G

Manufacturer:: onsemi

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: 5-TSSOP, SC-70-5, SOT-353

Datasheet:: NCP502SQ15T2G.pdf

Description:: IC REG LINEAR 1.5V 80MA SC88A

Quantity:: RFQ Add To RFQ list

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Product details

Overview

NCP502SQ15T2G from onsemi is a fixed-output, low-quiescent-current CMOS linear voltage regulator delivering 1.5 V at up to 80 mA output current in SC70-5 package. It features 40 µA typical quiescent current, ±2.0% output voltage accuracy over temperature, and 1.5 V nominal output optimized for battery-powered portable electronics requiring ultra-low standby power.

For engineers reviewing the NCP502SQ15T2G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 80 mA (max 1500 mV), enable threshold compatibility (1.3 V high / 0.3 V low), thermal performance in SC70-5 (R_JA = 400 °C/W), and ceramic capacitor stability with 1.0 µF input/output.

Technical Context

The NCP502SQ15T2G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and protection circuitry (current limit, thermal shutdown) in a single die. Its ultra-low I_Q enables operation in always-on subsystems where battery life is critical.

It operates across −40 °C to +85 °C ambient, supports input voltages up to 12 V, and maintains regulation down to 1.5 V output with dropout as low as 1500 mV at full 80 mA load and elevated temperature - consistent with its 1.5 V fixed-output variant specification.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	1.5 V ±2.0% (ensures stable core logic or sensor bias under load and temperature variation)
Max Output Current	80 mA (supports low-power microcontrollers, RF modules, and analog sensors)
Quiescent Current	40 µA typical (enables >1-year battery life in coin-cell–powered devices at 10 µA average system load)
Dropout Voltage	1500 mV max at 80 mA, −40 °C to +85 °C (defines minimum headroom needed between battery and regulated rail)
Line Regulation	0.4 mV/V typical (limits output drift during battery discharge or supply ripple)
Ripple Rejection	55 dB at 1 kHz (attenuates switching noise from upstream DC/DC converters)
Thermal Resistance	400 °C/W (Junction-to-Ambient, SC70-5 package; requires minimal PCB copper for <125 °C junction temp at 250 mW dissipation)

Pinout & Package

Package: SC70-5 (Case 419A), Pb-free, micro-miniature surface-mount package measuring 2.0 mm × 2.1 mm × 0.95 mm.

Pin/Terminal	Circuit Role	Design Meaning
1	Vin	Positive input supply connection; accepts 1.5 V to 12 V; must be decoupled with ≥1.0 µF ceramic capacitor near pin
2	GND	Power ground reference; low-impedance return path essential for noise immunity and thermal conduction
3	Enable	Logic-controlled ON/OFF input; active-high with 1.3 V turn-on threshold; connect to Vin if unused
4	N/C	No internal connection; PCB trace may be routed but must remain unconnected to avoid parasitic coupling
5	Vout	Regulated 1.5 V output; requires ≥1.0 µF ceramic capacitor directly at pin for stability and transient response

Key Features

Feature	Design Value
Ultra-low quiescent current	40 µA typical enables multi-year operation from CR2032 batteries in IoT endpoint sensors
Ceramic capacitor compatible	Stable with 1.0 µF output capacitance (no ESR requirement) simplifies BOM and reduces board space
Integrated protection	Current limiting and thermal shutdown prevent damage during overload or poor heatsinking
Precision output accuracy	±2.0% over −40 °C to +85 °C ensures reliable operation of 1.5 V logic and analog interfaces
Low-noise regulation	180 µV_rms output noise (100 Hz–100 kHz) supports noise-sensitive ADCs and RF receivers

Applications

Wearable Health Monitor	Bluetooth LE Sensor Node
Use Scenario: Continuous ECG signal acquisition powered by a 3.0 V coin cell with 10-year target lifetime. IC Role / Device Role / Timing Role: Provides clean, low-noise 1.5 V supply to analog front-end and ultra-low-power MCU core. Use Value: 40 µA I_Q minimizes standby drain; ±2.0% accuracy ensures consistent ADC reference scaling across temperature.	Use Scenario: Battery-operated environmental sensor transmitting data every 5 minutes via BLE. IC Role / Device Role / Timing Role: Regulates 1.5 V rail for BLE SoC I/O and sensor interface while enabling deep-sleep mode. Use Value: Enable pin allows full system shutdown (I_Q drops to <0.1 µA); SC70-5 footprint saves space in compact PCB layout.
Industrial Handheld Scanner	Smart Home Motion Detector
Use Scenario: Ruggedized barcode scanner using alkaline AA batteries in −20 °C to +60 °C environments. IC Role / Device Role / Timing Role: Supplies stable 1.5 V to laser driver and image sensor interface under varying battery voltage (3.2 V–1.8 V). Use Value: 1500 mV dropout at 80 mA allows operation down to ~3.0 V input; −40 °C to +85 °C rating covers extended industrial range.	Use Scenario: PIR-based occupancy detector powered by two AA cells, operating for >5 years without replacement. IC Role / Device Role / Timing Role: Powers 1.5 V microcontroller and RF transceiver only during motion-triggered wake-up bursts. Use Value: Fast enable response (<10 µs rise time per Figure 5) ensures immediate regulation upon wake-up; low noise avoids false triggers.

Wearable Health Monitor

Bluetooth LE Sensor Node

Use Scenario: Continuous ECG signal acquisition powered by a 3.0 V coin cell with 10-year target lifetime.

IC Role / Device Role / Timing Role: Provides clean, low-noise 1.5 V supply to analog front-end and ultra-low-power MCU core.

Use Value: 40 µA I_Q minimizes standby drain; ±2.0% accuracy ensures consistent ADC reference scaling across temperature.

Use Scenario: Battery-operated environmental sensor transmitting data every 5 minutes via BLE.

IC Role / Device Role / Timing Role: Regulates 1.5 V rail for BLE SoC I/O and sensor interface while enabling deep-sleep mode.

Use Value: Enable pin allows full system shutdown (I_Q drops to <0.1 µA); SC70-5 footprint saves space in compact PCB layout.

Industrial Handheld Scanner

Smart Home Motion Detector

Use Scenario: Ruggedized barcode scanner using alkaline AA batteries in −20 °C to +60 °C environments.

IC Role / Device Role / Timing Role: Supplies stable 1.5 V to laser driver and image sensor interface under varying battery voltage (3.2 V–1.8 V).

Use Value: 1500 mV dropout at 80 mA allows operation down to ~3.0 V input; −40 °C to +85 °C rating covers extended industrial range.

Use Scenario: PIR-based occupancy detector powered by two AA cells, operating for >5 years without replacement.

IC Role / Device Role / Timing Role: Powers 1.5 V microcontroller and RF transceiver only during motion-triggered wake-up bursts.

Use Value: Fast enable response (<10 µs rise time per Figure 5) ensures immediate regulation upon wake-up; low noise avoids false triggers.

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-dropout linear regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700T-1502E/TT	1.5 V fixed, 250 mA output, 1.6 µA I_Q, SOT-23-3 package (no enable pin)	Lacks enable control and thermal shutdown; higher output current but larger dropout at 80 mA (~250 mV)	Select when ultra-low I_Q dominates and enable functionality is unnecessary
TPS78015QDSERQ1	1.5 V fixed, 150 mA, 500 nA I_Q, automotive-grade (AEC-Q100), enable pin, 6-pin WSON	Higher cost, AEC-Q100 qualified, lower dropout (300 mV @ 100 mA), different package and pinout	Select for automotive or safety-critical designs requiring qualification and lower I_Q

Compared with MCP1700T-1502E/TT, NCP502SQ15T2G provides enable control and thermal protection at higher I_Q; compared with TPS78015QDSERQ1, it offers lower cost and smaller SC70-5 footprint but lacks automotive qualification and ultra-low nanoamp quiescent current.

Availability

NCP502SQ15T2G is available at Aetrix Electronics and suitable for wearable health monitors, Bluetooth LE sensor nodes, industrial handheld scanners, and smart home motion detectors requiring stable component supply with long-lifecycle support.

Supply support for NCP502SQ15T2G 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 for automotive, industrial, cloud, and IoT applications.

The NCP502 series belongs to onsemi's precision analog LDO portfolio, designed specifically for battery-powered portable equipment demanding ultra-low quiescent current and small-footprint regulation.

FAQ

What is the maximum input voltage rating for the NCP502SQ15T2G?

The NCP502SQ15T2G 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 input rails to stay within 1.5 V to 12 V, with sufficient margin above dropout - e.g., ≥3.0 V input for 1.5 V output at 80 mA load.

Does the NCP502SQ15T2G require an external capacitor on the Enable pin?

No, the NCP502SQ15T2G does not require an external capacitor on the Enable pin. The Enable input is CMOS-compatible with defined thresholds (1.3 V high, 0.3 V low) and exhibits negligible input current. If unused, it should be tied directly to Vin; adding capacitance may slow enable/disable transitions and is not recommended unless intentional filtering is needed for noisy environments.

Can the NCP502SQ15T2G operate with a 1.0 µF ceramic output capacitor only?

Yes, the NCP502SQ15T2G is explicitly designed to be stable with a 1.0 µF ceramic output capacitor - no minimum ESR requirement. This is confirmed in the Applications Information section and validated across all output voltages in the family. Larger values improve load transient response and noise rejection but are not required for basic stability.

Is the NCP502SQ15T2G still in active production or discontinued?

The NCP502SQ15T2G remains active and available per the latest onsemi documentation (Rev. 23, April 2026). While several other variants in the NCP502 family (e.g., NCP502SQ33T2G) are marked "DISCONTINUED" in the Ordering Information table, NCP502SQ15T2G is listed without discontinuation notation and ships in 3000-piece tape-and-reel packaging.

What is the thermal shutdown trigger temperature for the NCP502SQ15T2G?

The NCP502SQ15T2G incorporates internal thermal protection that activates at approximately 160 °C junction temperature, turning off the output to prevent damage. Recovery occurs automatically once the junction cools below the hysteresis threshold (~140 °C). This behavior is documented in the Definitions section and applies identically across all NCP502 variants, including NCP502SQ15T2G.

NCP502SQ15T2G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: 5-TSSOP, SC-70-5, SOT-353

Packaging:: Bulk

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):: 1.9V @ 80mA

Current - Output:: 80mA

Current - Quiescent (Iq):: 40 µA

Current - Supply (Max):: 90 µA

PSRR:: 55dB (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)

NCP502SQ15T2G FAQ

1.How can I place an order for NCP502SQ15T2G through Aetrix?

Please submit a Request for Quotation (RFQ) for NCP502SQ15T2G 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 NCP502SQ15T2G reliable?

The price and inventory of NCP502SQ15T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP502SQ15T2G is usually 5 days.

3.What payment methods are accepted for NCP502SQ15T2G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP502SQ15T2G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NCP502SQ15T2G?

NCP502SQ15T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NCP502SQ15T2G 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 NCP502SQ15T2G?

For technical support, including NCP502SQ15T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP502SQ15T2G requirements.

6.How does Aetrix verify that NCP502SQ15T2G is sourced from the original manufacturer or authorized distributors?

All NCP502SQ15T2G 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 NCP502SQ15T2G meets industry standards.

7.What is the process for return or replacement of NCP502SQ15T2G?

All NCP502SQ15T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP502SQ15T2G, 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 NCP502SQ15T2G part is unused and in its original packaging.

Return procedure for NCP502SQ15T2G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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