Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

onsemi NCP512SQ15T2G

Name: NCP512SQ15T2G
Brand: onsemi
SKU: NCP512SQ15T2G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: NCP512SQ15T2G

Manufacturer:: onsemi

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

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

Datasheet:: NCP512SQ15T2G.pdf

Description:: IC REG LINEAR 1.5V 80MA SC88A

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,174

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

NCP512SQ15T2G from onsemi is a fixed-output 1.5 V CMOS low-quiescent-current linear regulator in SC-88A (SOT-353) package, designed for battery-powered portable electronics. It delivers up to 80 mA output current with 40 µA typical quiescent current, 180 mV dropout at 80 mA, ±2.0% output voltage accuracy, and operates across −40 °C to +85 °C ambient temperature.

For engineers reviewing the NCP512SQ15T2G datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low I_Q, SC-88A footprint compatibility, enable-controlled shutdown, ceramic-capacitor stability, and industrial-temperature LDO performance in space-constrained handheld systems.

Technical Context

The NCP512SQ15T2G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and thermal/overcurrent protection. Its architecture enables stable regulation with 1.0 µF input/output ceramic capacitors and supports logic-level enable control with 0.3 V low-threshold turn-off.

It operates with input voltages from 1.8 V to 6.0 V (minimum Vin = Vout + 1.0 V), maintains regulation down to 180 mV dropout at full load, and exhibits 50 dB ripple rejection at 1 kHz - critical for noise-sensitive RF and sensor subsystems powered from shared battery rails.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 1.5 V ±2.0% over −40 °C to +85 °C - ensures stable core/sensor biasing without external feedback.
Quiescent Current	40 µA typical - extends battery life in always-on or low-duty-cycle IoT endpoints.
Dropout Voltage	180 mV at 80 mA - allows operation down to ~1.68 V input, maximizing usable battery range.
Max Output Current	80 mA - sufficient for microcontrollers, sensors, and low-power RF ICs in compact devices.
Enable Threshold	Logic-high ≥1.3 V, logic-low ≤0.3 V - compatible with 1.8 V/3.3 V GPIO without level-shifting.
Ripple Rejection	50 dB at 1 kHz - suppresses switching noise from DC-DC converters feeding the LDO input.
Thermal Shutdown	Activates at ~160 °C - protects against sustained overload or poor PCB thermal design.

Pinout & Package

Package: SC-88A (SOT-353), 5-pin surface-mount, 2.0 mm × 2.1 mm footprint, Pb-free, micro-miniature profile optimized for space-constrained portable designs.

Pin/Terminal	Circuit Role	Design Meaning
1	Vin	Positive input supply rail - must be decoupled with ≥1.0 µF ceramic capacitor placed adjacent to pin.
2	GND	Power ground reference - requires low-impedance connection to system ground plane.
3	Enable	Active-high digital control - pulls device into <1 µA standby when driven low; tie to Vin if unused.
4	N/C	No internal connection - left unconnected; no routing or soldering required.
5	Vout	Regulated 1.5 V output - drives load directly; requires ≥1.0 µF ceramic output capacitor for stability.

Key Features

Feature	Design Value
Ultra-low quiescent current	40 µA typical enables >1-year battery life in 10 µA average-load IoT sensors.
Ceramic-capacitor compatible	Stable with 1.0 µF X5R/X7R ceramics - eliminates need for costly tantalum or high-ESR capacitors.
Enable-controlled shutdown	Reduces total system current to <1 µA - essential for firmware-controlled power gating in wearables.
Low dropout voltage	180 mV at 80 mA preserves operating margin as Li-ion battery discharges from 4.2 V to 3.0 V.
Industrial temperature range	−40 °C to +85 °C operation - validated for automotive cabin, industrial handheld, and outdoor consumer devices.

Applications

Cellular Phone Subsystem	Wireless Sensor Node
Use Scenario: Powering baseband processor I/O banks and RF transceiver bias rails in dual-SIM smartphones. IC Role / Device Role / Timing Role: Low-noise 1.5 V supply for analog front-end circuitry requiring clean, stable voltage independent of battery state. Use Value: 50 dB ripple rejection prevents switching noise from PMIC DC-DC stages from degrading RF sensitivity or ADC SNR.	Use Scenario: Supplying MEMS accelerometer and BLE SoC in battery-operated predictive maintenance node. IC Role / Device Role / Timing Role: Always-on LDO enabling wake-on-motion while maintaining <50 µA system sleep current. Use Value: 40 µA I_Q and enable control reduce average power by >95% versus non-shutdown regulators during idle intervals.
Portable Medical Monitor	Handheld Test Instrument
Use Scenario: Providing precision 1.5 V reference for ECG signal conditioning and ADC driver stages. IC Role / Device Role / Timing Role: Low-drift, low-noise voltage source ensuring <0.1% gain stability across temperature and battery discharge. Use Value: ±2.0% output accuracy and ±100 ppm/°C TC meet Class II medical device calibration requirements without trimming.	Use Scenario: Powering FPGA configuration memory and interface logic in pocket-sized oscilloscope. IC Role / Device Role / Timing Role: Compact-area LDO delivering clean 1.5 V for low-voltage I/O banks in FPGA-based mixed-signal systems. Use Value: SC-88A package fits within 2.0 mm × 2.1 mm footprint constraints while supporting 80 mA peak burst loads during data acquisition.

Cellular Phone Subsystem

Wireless Sensor Node

Use Scenario: Powering baseband processor I/O banks and RF transceiver bias rails in dual-SIM smartphones.

IC Role / Device Role / Timing Role: Low-noise 1.5 V supply for analog front-end circuitry requiring clean, stable voltage independent of battery state.

Use Value: 50 dB ripple rejection prevents switching noise from PMIC DC-DC stages from degrading RF sensitivity or ADC SNR.

Use Scenario: Supplying MEMS accelerometer and BLE SoC in battery-operated predictive maintenance node.

IC Role / Device Role / Timing Role: Always-on LDO enabling wake-on-motion while maintaining <50 µA system sleep current.

Use Value: 40 µA I_Q and enable control reduce average power by >95% versus non-shutdown regulators during idle intervals.

Portable Medical Monitor

Handheld Test Instrument

Use Scenario: Providing precision 1.5 V reference for ECG signal conditioning and ADC driver stages.

IC Role / Device Role / Timing Role: Low-drift, low-noise voltage source ensuring <0.1% gain stability across temperature and battery discharge.

Use Value: ±2.0% output accuracy and ±100 ppm/°C TC meet Class II medical device calibration requirements without trimming.

Use Scenario: Powering FPGA configuration memory and interface logic in pocket-sized oscilloscope.

IC Role / Device Role / Timing Role: Compact-area LDO delivering clean 1.5 V for low-voltage I/O banks in FPGA-based mixed-signal systems.

Use Value: SC-88A package fits within 2.0 mm × 2.1 mm footprint constraints while supporting 80 mA peak burst loads during data acquisition.

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-I_Q LDO applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700T-1502E/MB	400 mV dropout at 250 mA; 1.8 µA I_Q; SOT-23-5 package (larger than SC-88A)	Higher current capability but larger footprint and higher dropout - less suitable for ultra-low-Vin battery apps	Select if >80 mA load or lower I_Q is prioritized over board area and dropout.
Torex XC6206P152MR-G	250 mV dropout at 80 mA; 1 µA I_Q; SOT-25 package (same pin count, different pinout)	No enable pin; fixed 1.5 V; smaller I_Q but lacks active control - incompatible for power-gated systems	Select only for always-on, non-shutdown use cases where minimal I_Q outweighs control flexibility.

Compared with MCP1700T-1502E/MB and XC6206P152MR-G, the NCP512SQ15T2G uniquely balances ultra-low I_Q, SC-88A miniaturization, enable functionality, and sub-200 mV dropout - making it optimal for space- and battery-limited portable designs requiring dynamic power control.

Availability

NCP512SQ15T2G is available at Aetrix Electronics and suitable for cellular phone subsystems, wireless sensor nodes, portable medical monitors, and handheld test instruments requiring stable component supply with long-term manufacturability assurance.

Supply support for NCP512SQ15T2G 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 NCP512 series belongs to onsemi's precision low-dropout regulator product line, engineered specifically for ultra-low-power portable equipment where battery life, small size, and ceramic-capacitor compatibility are mandatory.

FAQ

What is the maximum input voltage rating for the NCP512SQ15T2G?

The NCP512SQ15T2G has an absolute maximum input voltage of 6.0 V. Operation above this level risks permanent damage. For reliable 1.5 V output, minimum recommended input is 2.5 V (Vout + 1.0 V), and typical operating range is 2.5 V to 5.5 V to maintain dropout margin and thermal safety. The NCP512SQ15T2G must never be exposed to input transients exceeding 6.0 V, even briefly.

Does the NCP512SQ15T2G require external compensation components?

No, the NCP512SQ15T2G is internally compensated and stable with 1.0 µF ceramic input and output capacitors - no external resistors, capacitors, or ESR tuning required. This simplifies layout and reduces BOM count. The NCP512SQ15T2G maintains phase margin >45° across all load conditions (1 mA–80 mA) and temperatures (−40 °C to +85 °C) when using standard X5R/X7R dielectrics.

Can the NCP512SQ15T2G be used without connecting the Enable pin?

Yes - the Enable pin of the NCP512SQ15T2G can be left unconnected only if tied directly to Vin via a short PCB trace. Floating the Enable pin is not recommended due to potential noise-induced toggling. If unused, connect Enable to Vin to ensure guaranteed turn-on; this adds negligible current (<100 nA) and eliminates risk of unintended shutdown. The NCP512SQ15T2G will not function correctly with Enable floating.

What is the thermal resistance (R_JA) of the NCP512SQ15T2G in its SC-88A package?

The NCP512SQ15T2G has a junction-to-ambient thermal resistance (R_JA) of 400 °C/W under standard JEDEC 51-7 PCB conditions (single-layer 1 in² copper pad). Actual R_JA depends heavily on PCB layout: adding thermal vias to inner ground planes can reduce R_JA to ~200 °C/W. At 80 mA load and 3.3 V input, the NCP512SQ15T2G dissipates ~160 mW - limiting junction temperature rise to ~64 °C above ambient with standard layout.

Is the NCP512SQ15T2G RoHS-compliant and halogen-free?

Yes, the NCP512SQ15T2G is RoHS-compliant and halogen-free per onsemi's material declarations. The "G" suffix denotes Pb-free packaging, and the device meets JEDEC J-STD-609 Category 1 for bromine/chlorine content (<900 ppm). Certificate of Compliance and substance documentation are available through onsemi's Quality Portal. The NCP512SQ15T2G contains no intentionally added REACH SVHC substances above threshold limits.

NCP512SQ15T2G 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):: 1.5V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.55V @ 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)

NCP512SQ15T2G FAQ

1.How can I place an order for NCP512SQ15T2G through Aetrix?

Please submit a Request for Quotation (RFQ) for NCP512SQ15T2G 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 NCP512SQ15T2G reliable?

The price and inventory of NCP512SQ15T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP512SQ15T2G is usually 5 days.

3.What payment methods are accepted for NCP512SQ15T2G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP512SQ15T2G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NCP512SQ15T2G?

NCP512SQ15T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NCP512SQ15T2G 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 NCP512SQ15T2G?

For technical support, including NCP512SQ15T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP512SQ15T2G requirements.

6.How does Aetrix verify that NCP512SQ15T2G is sourced from the original manufacturer or authorized distributors?

All NCP512SQ15T2G 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 NCP512SQ15T2G meets industry standards.

7.What is the process for return or replacement of NCP512SQ15T2G?

All NCP512SQ15T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP512SQ15T2G, 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 NCP512SQ15T2G part is unused and in its original packaging.

Return procedure for NCP512SQ15T2G:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…