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onsemi NCP512SQ22T2G
- Part No.:
- NCP512SQ22T2G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP512SQ22T2G.pdf
- Description:
- IC REG LINEAR 2.2V 80MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:2,952
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Product details
Overview
NCP512SQ22T2G from onsemi is a fixed-output CMOS low-quiescent-current linear voltage regulator delivering 2.2 V at up to 80 mA, featuring 40 µA typical quiescent current, 220 mV dropout at 80 mA, and ±2.0% output voltage accuracy - designed for battery-powered portable electronics requiring stable low-power regulation.
For engineers reviewing the NCP512SQ22T2G datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low IQ operation, SC-88A (SOT-353) package compatibility, enable-controlled standby mode, and ceramic-capacitor stability across −40 °C to +85 °C ambient range.
Technical Context
The NCP512SQ22T2G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and thermal/current-limit protection in a single die. Its enable input provides logic-level control (VTH(H) = 1.3 V, VTH(L) = 0.3 V), while internal circuitry ensures stable regulation with 1.0 µF input/output ceramic capacitors.
Dropout behavior is temperature- and load-dependent: at 80 mA and −40 °C to +85 °C, dropout remains ≤300 mV for 2.2 V output; ground current scales linearly from 40 µA (no load) to 90 µA (80 mA), enabling accurate power budgeting in always-on subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.2 V ±2.0% - tightly regulated rail for MCU cores or RF front-end biasing |
| Quiescent Current | 40 µA typical - enables multi-year battery life in IoT sensors and wearables |
| Dropout Voltage | 220 mV at 80 mA - supports operation down to Vin = 2.42 V while maintaining regulation |
| Operating Temp | −40 °C to +85 °C - qualified for industrial and consumer portable environments |
| Max Input Voltage | 6.0 V - compatible with single-cell Li-ion (4.2 V max) and dual-cell alkaline stacks |
| Ripple Rejection | 50 dB at 1 kHz - suppresses switching noise from upstream DC/DC converters |
| Output Noise | 180 µVRMS (100 Hz–100 kHz) - suitable for analog sensor signal chains |
Pinout & Package
The NCP512SQ22T2G is housed in the SC-88A (SOT-353) surface-mount package - a 5-pin, 2.1 mm × 1.25 mm micro-miniature outline with 0.65 mm pitch, optimized for space-constrained portable PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply - must be decoupled with ≥1.0 µF ceramic capacitor placed adjacent to pin |
| 2 | GND | Power ground reference - requires low-impedance connection to PCB ground plane |
| 3 | Enable | Active-high digital control - pulls device into <1 µA standby when driven <0.3 V |
| 4 | N/C | No internal connection - must remain unconnected; no routing or soldering required |
| 5 | Vout | Regulated 2.2 V output - requires ≥1.0 µF ceramic capacitor with ESR ≤5 Ω for stability |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical - reduces standby power loss by >90% vs. standard LDOs |
| Ceramic-capacitor stability | Stable with 1.0 µF X5R/X7R ceramics - eliminates need for costly tantalum or polymer caps |
| Enable-controlled shutdown | Logic-compatible input with 1.3 V turn-on threshold - simplifies integration with 1.8 V/3.3 V GPIO |
| Pb-free SC-88A package | RoHS-compliant 2.1 × 1.25 mm outline - supports high-density automated assembly |
| Thermal shutdown protection | Activates at ~160 °C junction - prevents catastrophic failure during sustained overload |
Applications
| Wearable Health Monitor | Bluetooth LE Sensor Node |
|---|---|
Use Scenario: Continuous ECG/PPG sensing powered by coin-cell battery. IC Role / Device Role / Timing Role: Provides clean, low-noise 2.2 V bias for analog front-end and ADC reference. Use Value: 40 µA quiescent current extends battery life beyond 2 years; 180 µVRMS noise avoids signal degradation in sub-mV biopotential measurements. | Use Scenario: Intermittent temperature/humidity logging with BLE radio wake-up. IC Role / Device Role / Timing Role: Supplies regulated 2.2 V to MCU and sensor ICs; Enable pin synchronizes power with radio transmit bursts. Use Value: Enables <1 µA system sleep current via controlled shutdown; 220 mV dropout allows full utilization of declining coin-cell voltage (down to 2.42 V). |
| Industrial Handheld Scanner | Smart Remote Control |
Use Scenario: Rugged barcode scanner operating from AA batteries in warehouse environments. IC Role / Device Role / Timing Role: Powers laser driver and image sensor interface at stable 2.2 V across −20 °C to +60 °C ambient. Use Value: −40 °C to +85 °C rating ensures reliability in cold storage or hot loading docks; 50 dB ripple rejection isolates imaging circuitry from motor-switching noise. | Use Scenario: IR/RF remote with motion-activated wake and long shelf life. IC Role / Device Role / Timing Role: Delivers precise 2.2 V to ultra-low-power MCU and accelerometer during wake cycles. Use Value: ±2.0% output accuracy maintains consistent wake-sensitivity thresholds; SC-88A footprint minimizes PCB area in slim form factor. |
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-2202E/MB | 250 mV dropout at 250 mA; 1.6 µA quiescent current; SOT-23-5 package | Higher output current capability but larger footprint and lower voltage accuracy (±2.5%) | Preferred when >80 mA load or deeper sleep current (<2 µA) is required; not pin-compatible |
| Torex XC6206P222MR-G | 150 mV dropout at 80 mA; 1 µA quiescent current; SOT-25 package | Lower dropout and IQ, but only 50 mA rated output and no enable pin | Best for ultra-low-power, fixed-on applications where enable control is unnecessary |
Compared with MCP1700T-2202E/MB and XC6206P222MR-G, the NCP512SQ22T2G uniquely balances 80 mA output, 40 µA IQ, integrated enable, and ±2.0% accuracy in the compact SC-88A package - making it optimal for space- and power-constrained portable systems requiring active power management.
Availability
NCP512SQ22T2G is available at Aetrix Electronics and suitable for wearable health monitors, Bluetooth LE sensor nodes, industrial handheld scanners, and smart remote controls requiring stable component supply with long-lifecycle support.
Supply support for NCP512SQ22T2G 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, delivering silicon solutions for automotive, industrial, cloud, and intelligent power systems.
The NCP512 series belongs to onsemi's low-power linear regulator product line, engineered specifically for battery-operated portable devices demanding ultra-low quiescent current, small footprint, and robust thermal performance.
FAQ
What is the maximum input voltage rating for the NCP512SQ22T2G?
The NCP512SQ22T2G has an absolute maximum input voltage of 6.0 V. Operation above this level risks permanent damage. For reliable 2.2 V output regulation, Vin must remain ≥2.42 V (2.2 V + 220 mV dropout) across all load and temperature conditions. The device includes internal protection against overvoltage stress on the Enable pin (−0.3 V to Vin + 0.3 V).
Does the NCP512SQ22T2G require external components to operate stably?
Yes - the NCP512SQ22T2G 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 transient response, and reduce noise. The regulator is optimized for low-ESR ceramics (X5R/X7R); tantalum capacitors are also acceptable, but electrolytics are not recommended due to higher ESR.
How does the Enable pin function on the NCP512SQ22T2G?
The Enable pin (Pin 3) is an active-high digital control input. When pulled ≥1.3 V (typical), the NCP512SQ22T2G regulates normally; when pulled ≤0.3 V (typical), it enters ultra-low-power shutdown (<1 µA). If unused, Enable must be tied directly to Vin - floating the pin may cause erratic operation or increased quiescent current. No external pull-up resistor is needed when connected to Vin.
What is the thermal performance limit of the NCP512SQ22T2G in SC-88A package?
In the SC-88A package, the NCP512SQ22T2G has a junction-to-ambient thermal resistance (RJA) of 400 °C/W. At 25 °C ambient, maximum continuous power dissipation is ~250 mW before reaching the 150 °C junction limit. Derating is required above 25 °C; for example, at 60 °C ambient, max safe dissipation drops to ~150 mW. Thermal relief via PCB copper pour under Pin 2 (GND) significantly improves performance.
Is the NCP512SQ22T2G still in active production or discontinued?
Per onsemi's January 2026 datasheet revision (Rev. 16), the NCP512SQ22T2G is marked as discontinued in the official ordering table (page 9). However, Aetrix Electronics maintains active inventory and supply chain support for this part, including lifecycle coordination and last-time-buy planning for legacy designs dependent on the NCP512SQ22T2G.
NCP512SQ22T2G 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):
- 2.2V
- 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)
NCP512SQ22T2G FAQ
1.How can I place an order for NCP512SQ22T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP512SQ22T2G 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 NCP512SQ22T2G reliable?
The price and inventory of NCP512SQ22T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP512SQ22T2G is usually 5 days.
3.What payment methods are accepted for NCP512SQ22T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP512SQ22T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP512SQ22T2G?
NCP512SQ22T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP512SQ22T2G 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 NCP512SQ22T2G?
For technical support, including NCP512SQ22T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP512SQ22T2G requirements.
6.How does Aetrix verify that NCP512SQ22T2G is sourced from the original manufacturer or authorized distributors?
All NCP512SQ22T2G 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 NCP512SQ22T2G meets industry standards.
7.What is the process for return or replacement of NCP512SQ22T2G?
All NCP512SQ22T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP512SQ22T2G, 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 NCP512SQ22T2G part is unused and in its original packaging.
Return procedure for NCP512SQ22T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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