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onsemi NCP512SQ15T1
- Part No.:
- NCP512SQ15T1
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP512SQ15T1.pdf
- Description:
- IC REG LINEAR 1.5V 80MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:4,232
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Product details
Overview
NCP512SQ15T1 from onsemi is a fixed-output 1.5 V CMOS low-quiescent-current linear voltage regulator in SC-88A (SOT-353) package, delivering up to 80 mA output current with 40 µA typical quiescent current, 180 mV dropout at 80 mA, and ±2.0% output voltage accuracy - designed for battery-powered portable electronics requiring stable low-power supply regulation.
For engineers reviewing the NCP512SQ15T1 datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low IQ for extended battery life, SC-88A footprint compatibility, enable-controlled standby mode, ceramic capacitor stability, and industrial temperature range support (-40°C to +85°C).
Technical Context
The NCP512SQ15T1 integrates a PMOS pass transistor, precision voltage reference, error amplifier, and thermal/current-limit protection circuits. Its architecture enables stable operation with 1.0 µF ceramic input/output capacitors and supports logic-level enable control with 0.3 V (low) / 1.3 V (high) thresholds.
It operates across 1.8 V to 6.0 V input range while maintaining regulation down to 180 mV dropout at full 80 mA load. Ground current remains ≤90 µA over full load and temperature range, and output noise is 180 µVRMS (100 Hz–100 kHz), supporting noise-sensitive analog and RF subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±2.0% at 10 mA, stable across -40°C to +85°C ambient |
| Quiescent Current | 40 µA typical (enabled, no load); enables multi-week battery life in always-on sensors |
| Dropout Voltage | 180 mV at 80 mA output; allows operation from single Li-ion cell (3.0 V min) down to ~1.68 V input |
| Max Output Current | 80 mA continuous; sufficient for microcontrollers, RF transceivers, and sensor signal chains |
| Input Voltage Range | 0 to 6.0 V; compatible with coin cells, Li-ion, and regulated intermediate rails |
| Ripple Rejection | 50 dB at 1 kHz; suppresses switching noise from upstream DC/DC converters |
| Thermal Shutdown | Activates at ~160°C junction; protects against PCB layout or overload-induced failure |
Pinout & Package
Package: SC-88A (SOT-353), 5-pin surface-mount, 2.2 mm × 1.35 mm × 1.1 mm profile, Pb-free option available (NCP512SQ15T1G).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply; accepts 0–6.0 V; requires local 1.0 µF ceramic decoupling |
| 2 | Gnd | Power ground reference; must be low-impedance connection to minimize noise coupling |
| 3 | Enable | Active-high digital control; <0.3 V disables regulator (IQ <0.1 µA), >1.3 V enables |
| 4 | N/C | No internal connection; left floating or grounded per layout best practice |
| 5 | Vout | Regulated 1.5 V output; stable with 1.0 µF ceramic capacitor; supports load transients up to 60 mA/µs |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical enables >1-year runtime on CR2032 in low-duty-cycle IoT sensors |
| Low-dropout PMOS architecture | 180 mV dropout at 80 mA avoids headroom loss in space-constrained battery systems |
| Ceramic-capacitor compatible | Stable with 1.0 µF X5R/X7R ceramics; eliminates need for higher-ESR tantalum or electrolytic caps |
| Enable-controlled shutdown | Reduces IQ to <0.1 µA when disabled; supports host MCU power-gating strategies |
| Industrial temperature range | -40°C to +85°C operation validated; suitable for automotive cabin, industrial handhelds, and outdoor edge devices |
Applications
| Wearable Health Monitor | Bluetooth LE Sensor Node |
|---|---|
Use Scenario: Continuous ECG/PPG sensing with intermittent BLE transmission in wrist-worn device. IC Role / Device Role / Timing Role: Primary 1.5 V supply for analog front-end and BLE SoC I/O domain. Use Value: 40 µA quiescent current extends CR2032 battery life beyond 6 months; 180 mV dropout maintains regulation as battery discharges to 2.0 V. |
Use Scenario: Battery-powered environmental sensor (temp/humidity/pressure) transmitting data every 5 minutes via Bluetooth Low Energy. IC Role / Device Role / Timing Role: Regulated 1.5 V rail for sensor interface and BLE radio digital core. Use Value: Enable pin synchronizes power with transmission bursts, cutting system IQ by >95% during sleep; ceramic cap compatibility simplifies layout. |
| Handheld Barcode Scanner | Industrial Wireless Transmitter |
Use Scenario: Portable laser barcode scanner powered by single-cell Li-ion, operating intermittently for 8-hour shifts. IC Role / Device Role / Timing Role: Stable 1.5 V supply for CMOS image sensor and decode ASIC. Use Value: ±2.0% output accuracy ensures consistent ADC reference; thermal shutdown prevents overheating during rapid scan sequences. |
Use Scenario: DIN-rail mounted wireless transmitter in factory automation, converting 4–20 mA signals to LoRaWAN. IC Role / Device Role / Timing Role: Local 1.5 V bias for signal conditioning op-amps and microcontroller peripherals. Use Value: -40°C to +85°C rating supports uncontrolled cabinet environments; 50 dB ripple rejection isolates analog section from SMPS noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-IQ LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1502E/MB | 3.0 µA IQ (lower), 250 mA output (higher), SOT-23-3 package (no enable) | Lacks enable pin and thermal shutdown; unsuitable where host-controlled power gating is required | Prefer when minimal IQ dominates design and enable/shutdown is handled externally |
| Torex XC6206P152MR-G | 1.0 µA IQ, 80 mA output, SOT-23-5 (enable pin present), but only 45 dB PSRR at 1 kHz | Lower noise immunity; not recommended for mixed-signal systems near switching regulators | Choose only if ultra-low IQ is critical and system has clean input rail |
Compared with MCP1700T-1502E/MB and XC6206P152MR-G, the NCP512SQ15T1 uniquely balances ultra-low IQ (40 µA), integrated enable, thermal protection, and 50 dB ripple rejection - making it optimal for battery-powered systems requiring both efficiency and robustness.
Availability
NCP512SQ15T1 is available at Aetrix Electronics and suitable for wearable health monitors, Bluetooth LE sensor nodes, handheld barcode scanners, industrial wireless transmitters, and portable instrumentation requiring stable component supply with long-term lifecycle assurance.
Supply support for NCP512SQ15T1 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, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The NCP512SQ15T1 belongs to onsemi's NCP512 series of ultra-low-IQ CMOS LDO regulators, engineered specifically for portable battery-powered equipment where extended runtime and small footprint are critical design constraints.
FAQ
What is the maximum input voltage rating for the NCP512SQ15T1?
The NCP512SQ15T1 has an absolute maximum input voltage of 6.0 V. Exceeding this may damage the device. For reliable operation, the recommended input range is 1.8 V to 6.0 V, ensuring proper regulation and dropout margin across the full 1.5 V output load profile.
Does the NCP512SQ15T1 require external components to operate stably?
Yes - the NCP512SQ15T1 requires a minimum 1.0 µF ceramic capacitor on both input (Vin) and output (Vout) pins, placed as close as possible to the device. These capacitors ensure stability, improve transient response, and reduce noise; no ESR constraints apply, enabling use of low-cost X5R/X7R types.
How does the enable pin function on the NCP512SQ15T1?
The enable pin (Pin 3) is active-high: pulling it ≥1.3 V enables regulation, while pulling it ≤0.3 V disables the output and reduces quiescent current to <0.1 µA. If unused, it must be tied to Vin. This feature allows precise host-controlled power sequencing in multi-rail systems using the NCP512SQ15T1.
What is the thermal shutdown threshold of the NCP512SQ15T1?
The NCP512SQ15T1 incorporates internal thermal protection that activates at approximately 160°C junction temperature, turning off the output until the die cools. This safeguard prevents permanent damage during sustained overload or poor PCB thermal design - a critical reliability feature absent in many competing ultra-low-IQ LDOs like the NCP512SQ15T1.
Is the NCP512SQ15T1 compatible with lead-free reflow soldering processes?
Yes - the NCP512SQ15T1 is offered in both standard and Pb-free versions (e.g., NCP512SQ15T1G). The SC-88A package supports standard lead-free reflow profiles per J-STD-020, with peak temperatures up to 260°C. Always refer to the official onsemi packaging specification BRD8011/D for detailed thermal profile guidance for the NCP512SQ15T1.
NCP512SQ15T1 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)
NCP512SQ15T1 FAQ
1.How can I place an order for NCP512SQ15T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP512SQ15T1 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 NCP512SQ15T1 reliable?
The price and inventory of NCP512SQ15T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP512SQ15T1 is usually 5 days.
3.What payment methods are accepted for NCP512SQ15T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP512SQ15T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP512SQ15T1?
NCP512SQ15T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP512SQ15T1 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 NCP512SQ15T1?
For technical support, including NCP512SQ15T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP512SQ15T1 requirements.
6.How does Aetrix verify that NCP512SQ15T1 is sourced from the original manufacturer or authorized distributors?
All NCP512SQ15T1 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 NCP512SQ15T1 meets industry standards.
7.What is the process for return or replacement of NCP512SQ15T1?
All NCP512SQ15T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP512SQ15T1, 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 NCP512SQ15T1 part is unused and in its original packaging.
Return procedure for NCP512SQ15T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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