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onsemi NCP512SQ30T1G
- Part No.:
- NCP512SQ30T1G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP512SQ30T1G.pdf
- Description:
- IC REG LINEAR 3V 80MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:1,516
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Product details
Overview
NCP512SQ30T1G from onsemi is a fixed-output 3.0 V CMOS low-quiescent-current linear voltage 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 full load, ±2.0% output voltage accuracy, and operates across −40 °C to +85 °C ambient temperature - enabling long-life operation in handheld instruments and camcorders.
For engineers reviewing the NCP512SQ30T1G datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low IQ, SC-88A footprint compatibility, enable-controlled standby mode, ceramic-capacitor stability, and industrial-grade thermal performance without external biasing.
Technical Context
The NCP512SQ30T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and protection circuitry (current limit and thermal shutdown) in a single die. 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.
Designed for low-noise, low-power systems, it achieves 180 mV dropout at 80 mA and 3.0 V output, 50 dB ripple rejection at 1 kHz, and 180 µVRMS output noise (100 Hz–100 kHz), making it suitable for analog sensor rails and RF subsystems where supply integrity is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±2.0% over −40 °C to +85 °C ensures stable MCU core or sensor biasing without external feedback. |
| Quiescent Current | 40 µA typical (IQ) enables multi-year battery life in always-on IoT endpoints and remote sensors. |
| Dropout Voltage | 180 mV at 80 mA load allows operation from 3.18 V input - critical for single-cell Li-ion or alkaline systems near end-of-discharge. |
| Enable Threshold | 0.3 V logic-low disable threshold permits direct interface with 1.8 V/3.3 V GPIO without level-shifting. |
| Thermal Range | −40 °C to +85 °C operating ambient supports deployment in automotive cabin modules and industrial handhelds. |
| Noise Performance | 180 µVRMS (100 Hz–100 kHz) minimizes interference in precision ADC references and audio codec supplies. |
| Ripple Rejection | 50 dB at 1 kHz suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
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 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Vin | Positive input supply | Accepts 3.18 V to 6.0 V input; requires local 1.0 µF ceramic decoupling per layout guidelines. |
| 2 - GND | Power ground reference | Must connect to low-impedance ground plane; shared return path for input/output currents. |
| 3 - Enable | Logic-controlled ON/OFF input | Pull high to Vin to activate regulator; pull ≤0.3 V to disable and reduce IQ to <0.1 µA. |
| 4 - N/C | No internal connection | Not bonded; must remain unconnected - no routing or soldering required. |
| 5 - Vout | Regulated 3.0 V output | Supplies load up to 80 mA; requires 1.0 µF ceramic output capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical enables >10-year shelf life in coin-cell–powered devices like smart meters and wearables. |
| Ceramic-capacitor compatible | Stable with 1.0 µF X5R/X7R ceramics eliminates need for tantalum or electrolytic capacitors - reducing BOM cost and size. |
| Low dropout at full load | 180 mV dropout at 80 mA preserves headroom for 3.3 V rail generation from aging 3.6 V Li-ion cells. |
| Integrated protection | Current limit and thermal shutdown prevent damage during short-circuit or high-ambient conditions without external components. |
| Pb-free SC-88A package | RoHS-compliant 2.0 mm × 2.1 mm footprint supports high-density HDI layouts in smartphones and medical pens. |
Applications
| Portable Medical Sensors | IoT Edge Node Power |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) using ultra-low-power MCU and analog front-end. IC Role / Device Role / Timing Role: Primary 3.0 V supply for op-amps, ADC, and BLE SoC core logic. Use Value: 40 µA IQ extends disposable sensor patch battery life beyond 14 days; 180 mV dropout sustains regulation as battery discharges from 3.6 V to 3.18 V. |
Use Scenario: Battery-powered environmental sensor node transmitting temperature/humidity via LoRaWAN. IC Role / Device Role / Timing Role: Clean 3.0 V rail for microcontroller, radio transceiver, and precision reference. Use Value: 180 µVRMS noise prevents ADC quantization errors; enable pin allows deep-sleep current reduction to sub-µA system level. |
| Handheld Test Equipment | Digital Camcorder Audio Stage |
Use Scenario: Pocket-sized multimeter with LCD display and auto-ranging analog circuitry. IC Role / Device Role / Timing Role: Stable 3.0 V source for 16-bit SAR ADC and display driver IC. Use Value: ±2.0% output accuracy ensures measurement repeatability; SC-88A package fits within 12 mm × 18 mm PCB area constraint. |
Use Scenario: Consumer camcorder requiring low-noise microphone preamp and audio DAC supply. IC Role / Device Role / Timing Role: Dedicated 3.0 V LDO for analog audio signal chain. Use Value: 50 dB ripple rejection attenuates DC-DC switching noise at 1 MHz; ceramic-capacitor compatibility avoids ESR-related instability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-IQ LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3002E/MB | 300 mA output, 2.0 µA IQ, SOT-23-5 package (larger footprint, higher current) | Better suited for systems needing >80 mA or deeper sleep current; not SC-88A drop-in | Select when higher output current or lower IQ is prioritized over board space. |
| TN0120N30L | 300 mA output, 1.5 µA IQ, DFN-6 package (different pinout, no enable) | Lacks enable function; requires external logic for power sequencing | Choose only if enable control is unnecessary and DFN-6 layout is acceptable. |
Compared with MCP1700T-3002E/MB and TN0120N30L, the NCP512SQ30T1G offers optimal balance of ultra-small SC-88A footprint, integrated enable, and 40 µA IQ - uniquely fitting space- and battery-limited designs where both size and controlled shutdown matter.
Availability
NCP512SQ30T1G is available at Aetrix Electronics and suitable for portable medical sensors, IoT edge nodes, handheld test equipment, and digital camcorder audio stages requiring stable component supply with consistent lead times and full traceability.
Supply support for NCP512SQ30T1G 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 is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications - with emphasis on reliability, sustainability, and intelligent power management.
The NCP512 series belongs to onsemi's low-power linear regulator product line, engineered specifically for battery-operated portable electronics demanding ultra-low quiescent current, small footprint, and ceramic-capacitor compatibility.
FAQ
What is the maximum input voltage rating for the NCP512SQ30T1G?
The NCP512SQ30T1G has an absolute maximum input voltage (Vin) of 6.0 V. Exceeding this rating may cause permanent damage. For reliable operation at 3.0 V output, the recommended input range is 3.18 V to 6.0 V - ensuring sufficient headroom for the 180 mV dropout while maintaining thermal safety under 80 mA load.
Does the NCP512SQ30T1G require external compensation components?
No, the NCP512SQ30T1G is internally compensated and stable with 1.0 µF ceramic input and output capacitors. The datasheet confirms no minimum ESR requirement, eliminating the need for tantalum or aluminum electrolytic capacitors - simplifying design and reducing bill-of-materials cost.
Can the NCP512SQ30T1G be used without connecting the Enable pin?
Yes - if the Enable pin is unused, it must be tied directly to Vin to ensure the regulator remains active. Leaving Enable floating is not permitted; doing so risks unpredictable behavior due to noise coupling or partial turn-on, potentially increasing ground current or causing output instability.
What is the thermal shutdown trigger temperature for the NCP512SQ30T1G?
The NCP512SQ30T1G incorporates thermal protection that activates at approximately 160 °C junction temperature, disabling the output until the die cools. This safeguard prevents failure during sustained overload or poor PCB thermal design - and recovery occurs automatically once TJ falls below the hysteresis threshold.
Is the NCP512SQ30T1G pin-compatible with other variants in the NCP512 family?
Yes - all NCP512 variants including NCP512SQ28T1G, NCP512SQ30T1G, and NCP512SQ31T1G share identical SC-88A pinout, package dimensions, and terminal functions. Only the output voltage and marking code differ; no PCB redesign is needed when substituting between same-suffix variants.
NCP512SQ30T1G 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):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 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)
NCP512SQ30T1G FAQ
1.How can I place an order for NCP512SQ30T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP512SQ30T1G 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 NCP512SQ30T1G reliable?
The price and inventory of NCP512SQ30T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP512SQ30T1G is usually 5 days.
3.What payment methods are accepted for NCP512SQ30T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP512SQ30T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP512SQ30T1G?
NCP512SQ30T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP512SQ30T1G 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 NCP512SQ30T1G?
For technical support, including NCP512SQ30T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP512SQ30T1G requirements.
6.How does Aetrix verify that NCP512SQ30T1G is sourced from the original manufacturer or authorized distributors?
All NCP512SQ30T1G 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 NCP512SQ30T1G meets industry standards.
7.What is the process for return or replacement of NCP512SQ30T1G?
All NCP512SQ30T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP512SQ30T1G, 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 NCP512SQ30T1G part is unused and in its original packaging.
Return procedure for NCP512SQ30T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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