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onsemi NCP512SQ30T2G
- Part No.:
- NCP512SQ30T2G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP512SQ30T2G.pdf
- Description:
- IC REG LINEAR 3V 80MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:2,925
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Product details
Overview
NCP512SQ30T2G from onsemi is a fixed-output 3.0 V CMOS low-quiescent-current linear 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 handheld instruments requiring stable low-power voltage regulation.
For engineers reviewing the NCP512SQ30T2G datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low IQ operation, SC-88A footprint compatibility, enable-controlled standby mode, ceramic-capacitor stability, and industrial temperature range support.
Technical Context
The NCP512SQ30T2G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and thermal/overcurrent protection circuits. 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 across an input voltage range of 0–6.0 V and maintains regulation down to a 180 mV input-output differential at full 80 mA load. Output voltage drift is limited to ±100 ppm/°C over −40 °C to +85 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±2.0% at 10 mA, −40 °C to +85 °C - ensures stable MCU core or sensor rail under varying thermal and load conditions. |
| Quiescent Current | 40 µA typical (Enable = Vin), 0.1 µA max (Enable = 0 V) - enables multi-year battery life in always-on portable devices. |
| Dropout Voltage | 180 mV at 80 mA, 3.0 V output - allows operation from single-cell Li-ion (3.0–4.2 V) or two-cell alkaline (up to 3.2 V) without headroom loss. |
| Max Output Current | 80 mA continuous - sufficient for low-power microcontrollers, RF transceivers, and analog sensors in compact designs. |
| Input Voltage Range | 0 to 6.0 V - accommodates wide-input sources including USB, coin cells, and regulated intermediate rails. |
| Thermal Protection | Internal shutdown at ~160 °C junction - prevents catastrophic failure during transient overload or poor PCB thermal design. |
| 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, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply connection; must be decoupled with ≥1.0 µF ceramic capacitor placed adjacent to pin. |
| 2 | GND | Power ground reference; requires low-impedance PCB plane connection to minimize noise coupling and thermal resistance. |
| 3 | Enable | Active-high digital control input; pulls device into <1 µA standby when ≤0.3 V; connect to Vin if unused. |
| 4 | N/C | No internal connection; left unconnected per datasheet - no routing or soldering required. |
| 5 | Vout | Regulated 3.0 V output; requires ≥1.0 µF ceramic capacitor with ESR ≤5 Ω for stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical enables >10-year battery life in 10 µA average-load IoT endpoints. |
| Ceramic-capacitor compatible | Stable with 1.0 µF X5R/X7R ceramics - eliminates need for costly tantalum or high-ESR capacitors. |
| Enable-controlled shutdown | Reduces ground current to 0.1 µA, enabling system-level power gating without external MOSFETs. |
| Low dropout at full load | 180 mV dropout at 80 mA preserves usable battery capacity down to 3.18 V input for 3.0 V rail. |
| Industrial temperature range | −40 °C to +85 °C operation validated - suitable for automotive cabin, industrial handheld, and outdoor sensor nodes. |
Applications
| Portable Medical Sensors | Wireless Remote Controls |
|---|---|
|
Use Scenario: Powering low-power pulse oximeter or glucose meter ASICs from coin-cell batteries. IC Role / Device Role / Timing Role: Primary 3.0 V supply regulator for analog front-end and BLE SoC during intermittent measurement cycles. Use Value: 40 µA IQ extends CR2032 battery life beyond 3 years while maintaining ±2% output accuracy across body-temperature range. |
Use Scenario: Supplying 3.0 V rail to sub-GHz RF transceiver and tactile button controller in battery-operated remotes. IC Role / Device Role / Timing Role: Always-on LDO enabling instant wake-up from deep sleep via enable pin assertion. Use Value: Enable input reduces system standby current to <1 µA, meeting IEC 62368-1 energy efficiency requirements. |
| Handheld Test Meters | Smart Home Sensor Nodes |
|
Use Scenario: Providing clean 3.0 V bias for precision ADC and op-amp signal chain in multimeters. IC Role / Device Role / Timing Role: Low-noise voltage source with 180 µVRMS output noise (100 Hz–100 kHz) for 16-bit measurement accuracy. Use Value: 50 dB ripple rejection isolates sensitive analog circuitry from noisy DC-DC converter inputs. |
Use Scenario: Regulating power for Zigbee/Thread SoC, temperature/humidity sensor, and LED status indicator. IC Role / Device Role / Timing Role: Single-chip solution replacing discrete regulators and enable logic in space-constrained PCBs. Use Value: SC-88A package fits within 2.1 mm × 2.0 mm area - ideal for compact 2-layer sensor module layouts. |
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 | 3.0 V fixed, 1.6 µA IQ, 600 mV dropout at 250 mA, SOT-23-3 package - no enable pin, higher dropout, lower IQ. | Lacks enable control; unsuitable where system-level power gating is required. | Choose when minimal IQ dominates and enable functionality is unnecessary. |
| Torex XC6206P302MR-G | 3.0 V fixed, 1.0 µA IQ, 130 mV dropout at 100 mA, SOT-25 package - includes enable but requires external pull-up. | Higher max current (100 mA) but larger SOT-25 footprint and different pinout. | Prefer when >80 mA load or tighter dropout is needed, accepting larger board area. |
Compared with MCP1700T-3002E/MB and XC6206P302MR-G, the NCP512SQ30T2G uniquely balances 40 µA IQ, integrated enable, SC-88A size, and 180 mV dropout - making it optimal for space- and battery-life-constrained portable instrumentation.
Availability
NCP512SQ30T2G is available at Aetrix Electronics and suitable for portable medical sensors, wireless remote controls, and handheld test meters requiring stable component supply with long-lifecycle support.
Supply support for NCP512SQ30T2G 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, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP512SQ30T2G belongs to onsemi's ultra-low-IQ LDO family, engineered specifically for extended-battery-life portable electronics where standby current, small footprint, and ceramic-capacitor compatibility are critical.
FAQ
What is the maximum input voltage rating for the NCP512SQ30T2G?
The NCP512SQ30T2G has a maximum input voltage rating of 6.0 V, as specified in its Absolute Maximum Ratings table. Operation above this voltage risks permanent damage. For reliable 3.0 V output regulation, input should remain ≥3.18 V (3.0 V + 180 mV dropout) under 80 mA load, and derating is recommended above 85 °C ambient.
Does the NCP512SQ30T2G require external components to operate stably?
Yes, the NCP512SQ30T2G requires at least 1.0 µF ceramic capacitors on both input (Vin) and output (Vout) pins, placed as close as possible to the device. These capacitors ensure stability, improve line/load transient response, and reduce output noise. The datasheet confirms compatibility with low-ESR ceramics and specifies no minimum ESR requirement.
How does the enable pin function on the NCP512SQ30T2G?
The enable pin (Pin 3) of the NCP512SQ30T2G is active-high: pulling it ≥1.3 V turns the regulator on, while pulling it ≤0.3 V disables output and reduces ground current to 0.1 µA. If unused, it must be tied directly to Vin - floating the pin is not permitted and may cause erratic behavior or increased leakage.
Is the NCP512SQ30T2G still in active production?
No - according to the onsemi datasheet revision 16 (January 2026), the NCP512SQ30T2G is marked as discontinued. However, Aetrix Electronics maintains legacy inventory and offers lifecycle management support, including last-time-buy planning and cross-reference assistance for qualified replacements.
What is the thermal performance limit of the NCP512SQ30T2G in standard PCB layout?
In a standard 2-layer FR-4 PCB with 1-inch² copper pour under the SC-88A package, the NCP512SQ30T2G achieves a junction-to-ambient thermal resistance (RJA) of 400 °C/W. At 25 °C ambient, this limits continuous power dissipation to ~250 mW - corresponding to ~83 mA at 3.0 V output with 3.5 V input. Higher loads require enhanced thermal layout or derating.
NCP512SQ30T2G 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)
NCP512SQ30T2G FAQ
1.How can I place an order for NCP512SQ30T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP512SQ30T2G 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 NCP512SQ30T2G reliable?
The price and inventory of NCP512SQ30T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP512SQ30T2G is usually 5 days.
3.What payment methods are accepted for NCP512SQ30T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP512SQ30T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP512SQ30T2G?
NCP512SQ30T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP512SQ30T2G 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 NCP512SQ30T2G?
For technical support, including NCP512SQ30T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP512SQ30T2G requirements.
6.How does Aetrix verify that NCP512SQ30T2G is sourced from the original manufacturer or authorized distributors?
All NCP512SQ30T2G 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 NCP512SQ30T2G meets industry standards.
7.What is the process for return or replacement of NCP512SQ30T2G?
All NCP512SQ30T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP512SQ30T2G, 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 NCP512SQ30T2G part is unused and in its original packaging.
Return procedure for NCP512SQ30T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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