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onsemi NCP500SQL25T1G
- Part No.:
- NCP500SQL25T1G
- Manufacturer:
- onsemi
- Package:
- 6-VDFN Exposed Pad
- Datasheet:
-
NCP500SQL25T1G.pdf
- Description:
- IC REG LINEAR 2.5V 150MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,582
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Product details
Overview
NCP500SQL25T1G from onsemi is a fixed-output, low-noise, low-dropout linear regulator (LDO) designed for noise-sensitive portable applications. It delivers 2.5 V ±2.5% output at up to 150 mA, achieves 170 mV dropout at full load, operates from 1.8–6.0 V input, and requires no external bypass capacitor-enabling clean power for RF stages and VCOs.
For engineers reviewing the NCP500SQL25T1G datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low RMS noise (50 µV, 10 Hz–100 kHz), fast 20 µs enable turn-on, 1.0 V logic-compatible enable threshold, DFN 2×2.2 mm package footprint, and AEC-Q100 qualification for automotive use cases.
Technical Context
The NCP500SQL25T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and protection circuitry (current limit, thermal shutdown) in a single monolithic IC. Its architecture eliminates need for external noise-bypass capacitors by embedding low-noise design directly into the regulation loop.
It supports stable operation with 1.0 µF ceramic output capacitance, exhibits excellent line/load regulation (<10 mV / <45 mV), and maintains output accuracy across −40°C to +85°C ambient while enabling direct interface with 1.0 V logic systems via its sub-1 V enable threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±2.5% (1.8 V to 6.0 V input range; validated over −40°C to +85°C) |
| Max Output Current | 150 mA continuous (with internal current limit protecting up to 700 mA short-circuit) |
| Dropout Voltage | 170 mV at 150 mA (measured at Vout −2.0%; enables efficient operation with small Vin–Vout margin) |
| RMS Output Noise | 50 µV (10 Hz–100 kHz bandwidth; achieved without external bypass capacitor) |
| Enable Threshold | 0.9 V (logic-high turn-on; supports direct connection to 1.0 V I/O domains) |
| Quiescent Current | 180 µA at 150 mA load (low ground current improves battery life in always-on subsystems) |
| Thermal Protection | Internal shutdown at ~160°C junction temperature (prevents damage during overload or poor PCB thermal design) |
Pinout & Package
Package: DFN 2×2.2 mm, 6-pin, Pb-free, moisture-sensitive level 1 (MSL1). Exposed thermal pad enhances thermal performance in compact layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Enable | Active-high digital control input; pulled to Vin if unused; enables fast 20 µs startup |
| 2 | GND | Power ground reference; shared return path for input, output, and enable circuits |
| 3 | Vin | Unregulated input supply (1.8–6.0 V); requires 1.0 µF local ceramic decoupling |
| 4 | Vout | Stable 2.5 V regulated output; supports 1.0 µF minimum ceramic output capacitor |
| 5 | N/C | No internal connection; must be left floating or grounded per layout best practice |
| 6 | GND | Second ground terminal; connects to exposed thermal pad for improved heat dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 170 mV @ 150 mA enables use with single-cell Li-ion (3.0–4.2 V) powering 2.5 V rails |
| No external bypass capacitor | 50 µV RMS noise achieved internally-reduces BOM count, board area, and startup delay |
| 1.0 V logic-compatible enable | Turns on reliably with 0.9 V threshold, supporting modern low-voltage microcontrollers and FPGAs |
| DFN 2×2.2 mm package | 0.75 mm profile and thermal pad support high-density portable designs with minimal thermal resistance (225°C/W) |
| AEC-Q100 qualified | Qualified for automotive applications (NCP500SQL25T1G is NCV-grade variant per marking and ordering info) |
Applications
| RF Power Amplifier Biasing | VCO/PLL Clean Supply |
|---|---|
Use Scenario: Providing ultra-low-noise bias voltage to GaAs or SiGe RF power amplifiers in cellular handsets and IoT transceivers. IC Role / Device Role / Timing Role: Low-dropout linear regulator delivering stable 2.5 V rail with minimal phase noise coupling. Use Value: 50 µV RMS noise prevents AM-to-PM conversion and adjacent-channel interference in sensitive RF front-ends. |
Use Scenario: Supplying core voltage to voltage-controlled oscillators and PLL charge-pump circuits in wireless baseband processors. IC Role / Device Role / Timing Role: Precision LDO acting as dedicated low-noise analog supply for oscillator tuning elements. Use Value: Eliminates need for external bypass capacitor, preserving fast 20 µs power-up timing critical for frequency agility. |
| Automotive Camera Module | Portable Medical Sensor |
Use Scenario: Powering CMOS image sensor and ISP in ADAS rear-view or surround-view camera modules operating in vehicle cabin environments. IC Role / Device Role / Timing Role: AEC-Q100-qualified LDO providing 2.5 V to analog pixel array and ADC front-end. Use Value: Thermal shutdown and current limiting ensure robustness against ESD events and cable fault conditions per ISO 10605. |
Use Scenario: Regulating power for low-power biosignal acquisition ICs (ECG, pulse oximetry) in handheld diagnostic devices. IC Role / Device Role / Timing Role: Battery-efficient LDO supplying precision analog signal chain with minimal quiescent current (180 µA). Use Value: 170 mV dropout extends usable battery life by maintaining regulation down to 2.67 V input (e.g., 2× alkaline cells). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-2502E/TO | 350 mV dropout @ 250 mA; 115 µV RMS noise; SOT-23-5 package; no enable pin | Lacks enable control and higher noise limits suitability for RF/VCO use | Select when enable functionality is unnecessary and board space permits larger dropout margin |
| Torex XC6206P252MR-G | 250 mV dropout @ 150 mA; 40 µV RMS noise; SOT-25 package; 0.8 V enable threshold | Slightly lower noise but higher dropout; smaller package lacks thermal pad for high-temp operation | Prefer for ultra-low-noise priority in space-constrained consumer wearables where thermal load is light |
Compared with MCP1700-2502E/TO and XC6206P252MR-G, the NCP500SQL25T1G uniquely combines 170 mV dropout, 50 µV noise, 1.0 V logic enable, and AEC-Q100 qualification in a thermally enhanced DFN-making it optimal for automotive and portable RF systems demanding simultaneous low noise, low voltage headroom, and functional safety readiness.
Availability
NCP500SQL25T1G is available at Aetrix Electronics and suitable for automotive camera modules, portable medical sensors, RF power amplifier biasing, and VCO/PLL clean supply applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for NCP500SQL25T1G 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 NCP500 series was engineered specifically for portable and automotive systems needing ultra-low-noise, low-dropout regulation without external bypass components-targeting RF, imaging, and precision analog subsystems.
FAQ
What is the maximum input voltage rating for the NCP500SQL25T1G?
The NCP500SQL25T1G supports an absolute maximum input voltage of 6.0 V. Operation beyond this rating risks permanent damage. For inputs exceeding 6.0 V, a pre-regulator stage (e.g., resistive divider or upstream buck converter) must be used before the NCP500SQL25T1G input pin. The device's internal protection does not cover overvoltage conditions above 6.0 V.
Does the NCP500SQL25T1G require an external bypass capacitor for noise reduction?
No, the NCP500SQL25T1G does not require an external bypass capacitor. Its internal low-noise architecture achieves 50 µV RMS output noise (10 Hz–100 kHz) without one-unlike conventional LDOs. This eliminates associated BOM cost, board area, and potential startup delays caused by bypass capacitor charging.
Can the NCP500SQL25T1G be used in automotive applications?
Yes, the NCP500SQL25T1G is an NCV-grade part-specifically qualified to AEC-Q100 Grade 1 (−40°C to +125°C junction) and PPAP-capable. Its marking suffix "SQL" and packaging (DFN 2×2.2 mm) align with onsemi's automotive-qualified NCV500 family, making it suitable for ADAS cameras, infotainment power rails, and body control modules.
What is the typical enable turn-on time for the NCP500SQL25T1G?
The NCP500SQL25T1G has a typical enable turn-on time of 20 µs, measured from enable pin rising to 90% of final Vout. This fast response supports dynamic power sequencing in multi-rail systems and enables rapid wake-up in battery-powered devices. Turn-off time is similarly fast and load-dependent.
What output capacitor value is required for stable operation of the NCP500SQL25T1G?
The NCP500SQL25T1G requires a minimum 1.0 µF ceramic output capacitor for stability across all operating conditions. Larger values (e.g., 10 µF) improve load transient response and ripple rejection but are not mandatory. The regulator is stable with zero ESR and does not require tantalum or polymer capacitors.
NCP500SQL25T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 6-VDFN Exposed Pad
- 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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.27V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 1 µA
- Current - Supply (Max):
- 300 µA
- PSRR:
- 62dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (2x2.2)
NCP500SQL25T1G FAQ
1.How can I place an order for NCP500SQL25T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP500SQL25T1G 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 NCP500SQL25T1G reliable?
The price and inventory of NCP500SQL25T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP500SQL25T1G is usually 5 days.
3.What payment methods are accepted for NCP500SQL25T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP500SQL25T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP500SQL25T1G?
NCP500SQL25T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP500SQL25T1G 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 NCP500SQL25T1G?
For technical support, including NCP500SQL25T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP500SQL25T1G requirements.
6.How does Aetrix verify that NCP500SQL25T1G is sourced from the original manufacturer or authorized distributors?
All NCP500SQL25T1G 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 NCP500SQL25T1G meets industry standards.
7.What is the process for return or replacement of NCP500SQL25T1G?
All NCP500SQL25T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP500SQL25T1G, 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 NCP500SQL25T1G part is unused and in its original packaging.
Return procedure for NCP500SQL25T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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