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onsemi NCP500SQL30T1G
- Part No.:
- NCP500SQL30T1G
- Manufacturer:
- onsemi
- Package:
- 6-VDFN Exposed Pad
- Datasheet:
-
NCP500SQL30T1G.pdf
- Description:
- IC REG LINEAR 3V 150MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,989
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Product details
Overview
NCP500SQL30T1G from onsemi is a fixed-output, low-noise, low-dropout linear regulator delivering 150 mA with 3.0 V output, ultra-low dropout of 170 mV at full load, and 50 µVRMS noise (10 Hz–100 kHz) without bypass capacitor - designed for RF stages, VCOs, and portable battery-powered instrumentation.
For engineers reviewing the NCP500SQL30T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 150 mA, enable logic compatibility down to 1.0 V, thermal shutdown behavior, RMS noise performance, and DFN 2×2.2 mm package footprint constraints.
Technical Context
The NCP500SQL30T1G uses a PMOS pass transistor architecture enabling ultra-low dropout and fast 20 µs enable turn-on time. Its internal voltage reference, error amplifier, and protection circuits (current limit, thermal shutdown) operate across 1.8–6.0 V input range while maintaining ±2.5% output accuracy over −40°C to +85°C.
No external noise bypass capacitor is required due to integrated low-noise design; output stability is guaranteed with ≥1.0 µF ceramic capacitor. Enable threshold is asymmetric (0.9 V turn-on, 0.15 V turn-off), supporting direct interfacing with 1.0 V logic systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±2.5% (2.925–3.075 V) across −40°C to +85°C and 1–150 mA load |
| Dropout Voltage | 170 mV at 150 mA (measured at VOUT −2.0%), enabling operation with Vin as low as 3.17 V |
| Noise Performance | 50 µVRMS (10 Hz–100 kHz), no external bypass capacitor required for noise suppression |
| Enable Threshold | 0.9 V (logic high turn-on), 0.15 V (logic low turn-off); compatible with 1.0 V CMOS logic |
| Quiescent Current | 185 µA at 150 mA load and 3.3 V input; drops to 0.01 µA in shutdown mode |
| Ripple Rejection | 62 dB at 1 kHz, critical for post-regulation of switching power supplies |
| Operating Input Range | 1.8 V to 6.0 V - supports single-cell Li-ion (up to 4.4 V max for 3.0 V output) |
Pinout & Package
Package: DFN 2×2.2 mm, 6-pin, exposed thermal pad (Case 506BA). Pin 6 is GND and shares thermal pad connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply; must be decoupled with ≥1.0 µF ceramic capacitor near pin |
| 2 | GND | Power ground; connects to thermal pad - critical for thermal performance and noise control |
| 3 | Enable | Active-high logic input; pull to Vin if unused; slew rate >10 mV/s required for reliable switching |
| 4 | Vout | Regulated 3.0 V output; requires ≥1.0 µF ceramic output capacitor for stability |
| 5 | N/C | No internal connection - must remain unconnected or grounded per layout best practice |
| 6 | GND | Dedicated ground terminal tied to thermal pad; improves thermal resistance (RJA = 225°C/W) |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 170 mV @ 150 mA enables use in tight input-margin applications like Li-ion battery discharge tails |
| Low-noise operation | 50 µVRMS without bypass cap simplifies BOM and PCB layout for RF/analog signal chains |
| Fast enable response | 20 µs turn-on time supports dynamic power sequencing in portable instrumentation |
| 1.0 V logic-compatible enable | Direct interface with ultra-low-voltage microcontrollers eliminates level-shifting circuitry |
| Thermal & current protection | Internal shutdown at ~160°C and current limit (~540 mA typical) prevent damage during fault conditions |
Applications
| RF Power Amplifier Biasing | VCO Supply Regulation |
|---|---|
Use Scenario: Providing clean, stable bias voltage to GaAs FET amplifiers in 5G front-end modules where supply ripple directly impacts EVM. IC Role / Device Role / Timing Role: Low-noise LDO supplying 3.0 V to PA drain, rejecting switching noise from adjacent DC-DC converters. Use Value: 62 dB ripple rejection at 1 kHz and 50 µVRMS noise preserve signal integrity and minimize phase noise degradation. | Use Scenario: Powering voltage-controlled oscillators in wireless transceivers where supply noise modulates output frequency. IC Role / Device Role / Timing Role: Ultra-low-noise 3.0 V regulator for VCO core, placed adjacent to oscillator IC on RF section of PCB. Use Value: No external bypass capacitor needed - avoids parasitic resonance and saves board space in compact RF layouts. |
| Portable Medical Sensor Node | Industrial Handheld Meter |
Use Scenario: Regulating power for low-power ADCs and analog front-ends in battery-operated ECG monitors. IC Role / Device Role / Timing Role: Primary 3.0 V rail generator from 3.6 V Li-ion cell, enabling precision measurement during deep discharge (down to 3.17 V Vin). Use Value: 170 mV dropout extends usable battery life by >15% compared to standard 300 mV LDOs at end-of-discharge. | Use Scenario: Supplying microcontroller, display driver, and touch controller in rugged handheld multimeters. IC Role / Device Role / Timing Role: Main system LDO with enable control synchronized to button press for zero-quiescent power-down. Use Value: 0.01 µA shutdown current and 1.0 V logic-compatible enable reduce standby power to <1 µW. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3002E/MB | 250 mV dropout @ 150 mA; 30 µVRMS noise; SOT-23-5 package; no enable pin | Lacks enable control and thermal shutdown; lower max input (6 V vs. 6 V same), but smaller footprint | Select when enable functionality is unnecessary and board space is constrained; verify thermal margin at 150 mA |
| Torex XC6206P302MR-G | 200 mV dropout @ 150 mA; 40 µVRMS noise; SOT-25 package; enable pin with 0.7 V threshold | Lower noise than NCP500SQL30T1G but higher dropout; not AEC-Q100 qualified | Prefer for ultra-low-noise consumer audio; avoid in automotive or industrial environments requiring PPAP support |
Compared with MCP1700-3002E/MB and XC6206P302MR-G, the NCP500SQL30T1G uniquely combines 170 mV dropout, 1.0 V enable compatibility, and AEC-Q100 qualification - making it optimal for space-constrained, battery-sensitive RF and portable instrumentation designs requiring robust enable control and automotive-grade reliability.
Availability
NCP500SQL30T1G is available at Aetrix Electronics and suitable for RF front-end biasing, portable medical sensor nodes, industrial handheld meters, and other applications requiring stable component supply with low-noise, low-dropout regulation.
Supply support for NCP500SQL30T1G 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 is part of onsemi's precision analog portfolio, engineered specifically for noise-sensitive portable electronics where ultra-low dropout, fast enable response, and minimal external components are critical design requirements.
FAQ
What is the minimum input voltage required for NCP500SQL30T1G to maintain 3.0 V regulation at 150 mA load?
The NCP500SQL30T1G requires a minimum input voltage of 3.17 V to sustain regulation at 150 mA, based on its 170 mV dropout specification (3.0 V + 0.17 V). Below this, output voltage collapses nonlinearly. This allows operation down to the final discharge voltage of a single-cell Li-ion battery, extending usable runtime in portable devices using the NCP500SQL30T1G.
Does NCP500SQL30T1G require an external noise bypass capacitor?
No, the NCP500SQL30T1G does not require an external noise bypass capacitor. Its integrated low-noise architecture achieves 50 µVRMS output noise (10 Hz–100 kHz) without one - unlike conventional LDOs. Adding a bypass capacitor may even degrade startup time or stability. The NCP500SQL30T1G only requires ≥1.0 µF ceramic input and output capacitors for basic operation and transient response.
Can NCP500SQL30T1G be used with 1.0 V logic-level microcontrollers?
Yes, the NCP500SQL30T1G's enable input accepts logic-high signals as low as 0.9 V and logic-low as high as 0.15 V, making it fully compatible with 1.0 V CMOS logic outputs. This eliminates need for level shifters in ultra-low-voltage systems. When inactive, the NCP500SQL30T1G draws only 0.01 µA, supporting aggressive power gating strategies in battery-powered applications using the NCP500SQL30T1G.
What thermal considerations apply to NCP500SQL30T1G in DFN 2×2.2 mm package?
The NCP500SQL30T1G in DFN 2×2.2 mm has RJA = 225°C/W. At 150 mA and 3.3 V input, power dissipation is ~45 mW - resulting in ~10°C junction rise above ambient. However, under worst-case (6.0 V input, 150 mA), dissipation reaches ~450 mW, demanding adequate copper pour on the thermal pad and surrounding GND plane. The NCP500SQL30T1G includes thermal shutdown at ~160°C to prevent permanent damage.
Is NCP500SQL30T1G suitable for automotive applications?
The NCP500SQL30T1G is not automotive-qualified; only the NCV500 variant (e.g., NCV500SQL30T1G) carries AEC-Q100 qualification and PPAP capability. While the NCP500SQL30T1G shares identical electrical specs, it lacks the extended temperature screening, traceability, and change-control processes required for automotive use. For industrial or consumer applications, the NCP500SQL30T1G is fully appropriate - but automotive designs must specify the NCV prefix version.
NCP500SQL30T1G 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):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.24V @ 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)
NCP500SQL30T1G FAQ
1.How can I place an order for NCP500SQL30T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP500SQL30T1G 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 NCP500SQL30T1G reliable?
The price and inventory of NCP500SQL30T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP500SQL30T1G is usually 5 days.
3.What payment methods are accepted for NCP500SQL30T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP500SQL30T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP500SQL30T1G?
NCP500SQL30T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP500SQL30T1G 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 NCP500SQL30T1G?
For technical support, including NCP500SQL30T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP500SQL30T1G requirements.
6.How does Aetrix verify that NCP500SQL30T1G is sourced from the original manufacturer or authorized distributors?
All NCP500SQL30T1G 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 NCP500SQL30T1G meets industry standards.
7.What is the process for return or replacement of NCP500SQL30T1G?
All NCP500SQL30T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP500SQL30T1G, 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 NCP500SQL30T1G part is unused and in its original packaging.
Return procedure for NCP500SQL30T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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