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onsemi NCP512SQ30T1
- Part No.:
- NCP512SQ30T1
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP512SQ30T1.pdf
- Description:
- IC REG LDO LQC 80MA 3.0V SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:30,282
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Product details
Overview
NCP512SQ30T1 from onsemi is a fixed-output 3.0 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 full load, ±2.0% output voltage accuracy, and operates across −40 °C to +85 °C ambient temperature - enabling long runtime in handheld instruments and camcorders.
For engineers reviewing the NCP512SQ30T1 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 NCP512SQ30T1 integrates a PMOS pass transistor, precision voltage reference, error amplifier, and internal protection circuits including current limit and thermal shutdown. Its architecture enables stable regulation with 1.0 µF ceramic input/output capacitors and supports logic-level enable control with 0.3 V low-threshold turn-off.
Dropout behavior is characterized at 3.0 V output: 180 mV typical at 80 mA and −40 °C to +85 °C, rising to 300 mV maximum under worst-case conditions. Ground current remains ≤90 µA across 1–80 mA load range, and ripple rejection reaches 50 dB at 1 kHz with 60 mA load.
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 rail without external feedback. |
| Quiescent Current | 40 µA typical (IQ) with enable high enables multi-year battery life in always-on IoT sensors. |
| Dropout Voltage | 180 mV typical at 80 mA load allows operation from 3.18 V input - critical for single-cell Li-ion or alkaline systems. |
| Max Output Current | 80 mA continuous output supports low-power microcontrollers, RF transceivers, and analog front-ends. |
| Enable Threshold | 0.3 V max logic-low threshold guarantees reliable disable under weak pull-down or open-drain control. |
| Thermal Protection | Internal shutdown activates at ~160 °C junction temperature, preventing damage during sustained overload or poor PCB heatsinking. |
| Ripple Rejection | 50 dB at 1 kHz enables clean power delivery to noise-sensitive ADCs or PLLs despite noisy DC-DC sources. |
Pinout & Package
Package: SC-88A (SOT-353), 5-pin surface-mount, 2.0 mm × 2.1 mm footprint, Pb-free, rated for −40 °C to +85 °C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply: accepts 0–6.0 V; must be decoupled with ≥1.0 µF ceramic capacitor near pin. |
| 2 | GND | Power ground reference: requires low-impedance PCB connection to minimize noise coupling and thermal resistance. |
| 3 | Enable | Active-high digital control: pulls low (<0.3 V) to disable regulator and reduce IQ to ≤0.1 µA; tie to Vin if unused. |
| 4 | N/C | No internal connection: left floating or grounded per layout best practice; no electrical function. |
| 5 | Vout | Regulated 3.0 V output: drives load up to 80 mA; requires ≥1.0 µF ceramic capacitor with ESR ≤5 Ω for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical enables >10-year battery life in coin-cell-powered remote sensors. |
| Low-dropout PMOS architecture | 180 mV dropout at 80 mA allows direct regulation from aging 3.2 V LiFePO₄ cells. |
| Ceramic-capacitor compatible | Stable with 1.0 µF X5R/X7R ceramics eliminates need for costly tantalum or electrolytic capacitors. |
| Enable-controlled standby | Logic-compatible enable pin reduces total system IQ to sub-µA levels during sleep modes. |
| Industrial temperature range | −40 °C to +85 °C operation supports deployment in automotive cabins and outdoor instrumentation. |
Applications
| Portable Medical Sensors | Wireless Remote Controls |
|---|---|
|
Use Scenario: Continuous glucose monitor using coin-cell battery and ultra-low-power MCU. IC Role / Device Role / Timing Role: Primary 3.0 V power rail regulator for analog front-end and BLE SoC. Use Value: 40 µA IQ extends battery life beyond 3 years while maintaining ±2% output accuracy across body temperature range. |
Use Scenario: IR-based universal remote with motion-activated wake-up and Bluetooth LE pairing. IC Role / Device Role / Timing Role: Always-on LDO supplying real-time clock and accelerometer during deep-sleep state. Use Value: Enable pin allows full shutdown of downstream circuitry, reducing system standby current to <1 µA. |
| Handheld Test Meters | Digital Camcorders |
|
Use Scenario: Battery-powered multimeter with LCD display and precision ADC. IC Role / Device Role / Timing Role: Clean 3.0 V supply for 24-bit sigma-delta ADC reference and microcontroller core. Use Value: 50 dB ripple rejection suppresses switching noise from boost converter powering display backlight. |
Use Scenario: Compact HD camcorder using single-cell Li-ion battery and image signal processor. IC Role / Device Role / Timing Role: Secondary regulated rail for memory interface and audio codec. Use Value: 180 mV dropout enables >92% efficiency at 3.0 V output from 3.4–4.2 V battery range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3002E/MB | 300 mA output, 1.6 µA IQ, SOT-23-5 package - higher current but larger footprint and lower accuracy (±2.5%). | Suitable for higher-load applications like GPS modules where 80 mA is insufficient. | Select when >100 mA output or sub-µA IQ is required; verify PCB layout change for SOT-23-5 pad dimensions. |
| TCS2117-3.0 | 80 mA output, 50 µA IQ, same SC-88A package, but no enable pin and ±2.0% accuracy. | Fits space-constrained designs needing basic regulation without active control. | Choose when enable functionality is unnecessary and cost sensitivity outweighs 10 µA IQ penalty. |
Compared with MCP1700T-3002E/MB and TCS2117-3.0, the NCP512SQ30T1 uniquely balances ultra-low IQ, enable control, SC-88A footprint, and ±2.0% accuracy - making it optimal for compact, battery-critical systems requiring programmable power sequencing.
Availability
NCP512SQ30T1 is available at Aetrix Electronics and suitable for portable medical sensors, wireless remote controls, handheld test meters, digital camcorders, and battery-powered instrumentation requiring stable component supply with long-lifecycle support.
Supply support for NCP512SQ30T1 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 NCP512 series belongs to onsemi's low-power linear regulator product line, engineered specifically for extended battery life in space-constrained portable electronics through ultra-low quiescent current and minimal external component count.
FAQ
What is the maximum input voltage rating for the NCP512SQ30T1?
The NCP512SQ30T1 has an absolute maximum input voltage of 6.0 V. Operation above this level risks permanent damage. For reliable 3.0 V output regulation, input should remain within 3.18 V (3.0 V + 180 mV dropout) to 6.0 V - especially critical when powering from single-cell Li-ion batteries with full-charge voltage up to 4.2 V.
Does the NCP512SQ30T1 require an external resistor network to set output voltage?
No, the NCP512SQ30T1 is a fixed-output regulator with internally trimmed 3.0 V reference. It contains integrated resistors for voltage setting and requires no external feedback components - simplifying design and reducing bill-of-materials cost compared to adjustable LDOs.
Can the NCP512SQ30T1 operate with ceramic output capacitors?
Yes, the NCP512SQ30T1 is explicitly designed for stability with 1.0 µF ceramic capacitors (X5R/X7R dielectrics). Unlike older LDOs, it does not require minimum ESR or specific capacitor chemistry - enabling smaller, cheaper, and more reliable decoupling than tantalum alternatives.
What happens to the NCP512SQ30T1 output when the Enable pin is left unconnected?
If the Enable pin is left floating, the NCP512SQ30T1 may behave unpredictably due to noise susceptibility. The datasheet specifies that unused Enable pins must be tied to Vin to ensure reliable turn-on. Leaving it unconnected risks intermittent regulation or complete failure to power up.
Is the NCP512SQ30T1 RoHS-compliant and lead-free?
Yes, the NCP512SQ30T1 is a Pb-free device per the "G" suffix and marking diagram in the datasheet. It complies with RoHS Directive 2011/65/EU and is manufactured using lead-free solderable terminations and halogen-free molding compound.
NCP512SQ30T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- -
- Output Type:
- -
- Number of Regulators:
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- -
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-88A (SC-70-5/SOT-353)
NCP512SQ30T1 FAQ
1.How can I place an order for NCP512SQ30T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP512SQ30T1 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 NCP512SQ30T1 reliable?
The price and inventory of NCP512SQ30T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP512SQ30T1 is usually 5 days.
3.What payment methods are accepted for NCP512SQ30T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP512SQ30T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP512SQ30T1?
NCP512SQ30T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP512SQ30T1 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 NCP512SQ30T1?
For technical support, including NCP512SQ30T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP512SQ30T1 requirements.
6.How does Aetrix verify that NCP512SQ30T1 is sourced from the original manufacturer or authorized distributors?
All NCP512SQ30T1 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 NCP512SQ30T1 meets industry standards.
7.What is the process for return or replacement of NCP512SQ30T1?
All NCP512SQ30T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP512SQ30T1, 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 NCP512SQ30T1 part is unused and in its original packaging.
Return procedure for NCP512SQ30T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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