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onsemi NCP500SQL50T1
- Part No.:
- NCP500SQL50T1
- Manufacturer:
- onsemi
- Package:
- 6-VDFN Exposed Pad
- Datasheet:
-
NCP500SQL50T1.pdf
- Description:
- IC REG LINEAR 5V 150MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,474
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Product details
Overview
NCP500SQL50T1 from onsemi is a fixed-output, CMOS low-dropout linear regulator delivering 150 mA with 5.0 V output, ultra-low dropout (170 mV at 150 mA), 2.5% output accuracy, and 50 µVRMS noise (10 Hz–100 kHz, no bypass capacitor required). It operates from 1.8 V to 6.0 V input and supports fast 20 µs enable turn-on - ideal for noise-sensitive RF stages and portable instrumentation.
For engineers reviewing the NCP500SQL50T1 datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage under load, RMS noise performance without external bypass, enable logic compatibility down to 1.0 V, thermal shutdown behavior, and DFN 2×2.2 mm footprint constraints in space-constrained battery-powered designs.
Technical Context
The NCP500SQL50T1 uses a PMOS pass transistor architecture enabling ultra-low dropout and eliminating the need for an external noise-bypass capacitor. Its internal voltage reference, error amplifier, and protection circuits (current limit, thermal shutdown) are integrated into a single die optimized for low-quiescent-current operation across −40 °C to +85 °C ambient.
It achieves stable regulation with only 1.0 µF ceramic output capacitance and supports direct 1.0 V logic-level enable control. The device's 225 °C/W junction-to-ambient thermal resistance (DFN package) and 125 °C max junction temperature define its power handling limits under continuous 150 mA load at elevated ambient temperatures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2.5% (4.875–5.125 V over −40 °C to +85 °C, 1–150 mA load) |
| Max Output Current | 150 mA continuous; short-circuit current limited to 200–700 mA |
| Dropout Voltage | 170 mV at 150 mA (measured at VOUT −2.0%), enabling operation with Vin as low as 5.17 V |
| Output Noise | 50 µVRMS (10 Hz–100 kHz, no bypass capacitor required) |
| Enable Threshold | Turn-on at ≥0.9 V, turn-off at ≤0.15 V - compatible with 1.0 V logic systems |
| Quiescent Current | 185–210 µA (at 150 mA load, Vin = 3.3–5.5 V), rising to 300 µA max under full load |
| Ripple Rejection | 62 dB at 1 kHz (Vin = VOUT +1.0 V +0.5 VPP, IOUT = 60 mA) |
Pinout & Package
Package: DFN 2×2.2 mm, 6-pin, exposed thermal pad (Case 506BA). Pin 6 is GND and shares thermal connection with the die paddle.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Enable | Active-high digital control input; connect to Vin if unused; drives internal PMOS gate |
| 2 | GND | Power ground reference for regulator core and feedback network |
| 3 | VIN | Unregulated input supply (1.8–6.0 V); requires 1.0 µF decoupling capacitor |
| 4 | VOUT | Stable 5.0 V regulated output; minimum 1.0 µF ceramic capacitor required |
| 5 | N/C | No internal connection; must remain unconnected or grounded per layout guidelines |
| 6 | GND | Secondary ground terminal tied to thermal pad; improves thermal dissipation and EMI performance |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 170 mV at full 150 mA load enables use with single-cell Li-ion (≥5.17 V min input) or 5 V rail post-regulation |
| No external noise bypass | 50 µVRMS noise achieved via internal architecture - eliminates BOM cost, board area, and startup delay from bypass caps |
| 1.0 V logic-compatible enable | Valid high threshold at 0.9 V allows direct interfacing with low-voltage microcontrollers and ASICs without level-shifting |
| Thermal & current protection | Internal shutdown at ~160 °C and foldback current limiting prevent damage during overload or poor heatsinking |
| DFN 2×2.2 mm footprint | Compact, thermally enhanced package reduces PCB area by >50% vs. TSOP-5 while improving thermal resistance (225 vs. 250 °C/W) |
Applications
| RF Power Amplifier Biasing | VCO/PLL Reference Supply |
|---|---|
|
Use Scenario: Providing clean, stable bias to GaAs or SiGe RF power amplifiers in 5G front-end modules. IC Role / Device Role / Timing Role: Low-noise LDO supplying 5.0 V bias rail with minimal phase noise contribution. Use Value: 50 µVRMS noise ensures <1 dB degradation in adjacent-channel power ratio (ACPR) versus higher-noise alternatives. |
Use Scenario: Powering voltage-controlled oscillators and PLL charge-pump circuits in wireless transceivers. IC Role / Device Role / Timing Role: Ultra-stable 5.0 V reference supply minimizing VCO tuning sensitivity to supply ripple. Use Value: 62 dB ripple rejection at 1 kHz suppresses switching noise from upstream SMPS, reducing close-in phase jitter. |
| Portable Medical Sensors | Industrial Handheld Scanners |
|
Use Scenario: Regulating power for low-power analog front-ends in wearable ECG or pulse oximetry devices. IC Role / Device Role / Timing Role: Primary 5.0 V supply for precision ADCs and op-amps operating from coin-cell or Li-ion sources. Use Value: 170 mV dropout extends usable battery life by enabling regulation down to 5.17 V input - critical for single-cell operation. |
Use Scenario: Powering image sensor interfaces and decode engines in rugged barcode scanners. IC Role / Device Role / Timing Role: Enable-controlled 5.0 V rail for rapid power cycling of optical subsystems during idle periods. Use Value: 20 µs enable turn-on time supports sub-millisecond wake-up from deep sleep, meeting MIL-STD-810G power-response requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-5002E/TO | 300 mA rated, but 250 mV dropout at 250 mA; 30 µVRMS noise; SOT-23-5 package | Larger dropout and lower max current reduce suitability for Li-ion 5 V rail post-regulation under heavy load | Prefer for cost-sensitive, lower-current (<100 mA), space-constrained designs where 250 mV dropout is acceptable |
| TLS850F5BXTMA1 | Automotive-grade (AEC-Q100), 500 mA, 180 mV dropout at 500 mA, 40 µVRMS; PG-TSDSO-8 package | Higher current, automotive qualification, and larger footprint - over-specified for consumer portable use | Choose only when AEC-Q100 compliance, extended temperature range (−40 °C to +150 °C), or >150 mA headroom is mandatory |
Compared with MCP1700-5002E/TO and TLS850F5BXTMA1, the NCP500SQL50T1 delivers optimal balance of ultra-low dropout (170 mV), industry-leading 50 µVRMS noise without bypass, and compact DFN packaging - making it uniquely suited for battery-powered RF and precision analog systems where every millivolt and microwatt matters.
Availability
NCP500SQL50T1 is available at Aetrix Electronics and suitable for RF front-end biasing, portable medical sensor power, and industrial handheld scanner designs requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for NCP500SQL50T1 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 focused on energy-efficient innovation, delivering silicon solutions for automotive, industrial, cloud, and IoT applications with emphasis on reliability and sustainability.
The NCP500 series was designed specifically for portable battery-powered systems demanding low noise, fast enable response, and minimal dropout - targeting RF, medical, and imaging applications where supply integrity directly impacts signal fidelity.
FAQ
What is the maximum input voltage rating for the NCP500SQL50T1?
The NCP500SQL50T1 has an absolute maximum input voltage of 6.0 V. Operation above this level risks permanent damage. For reliable 5.0 V output, the minimum recommended input is 5.17 V (accounting for 170 mV dropout at 150 mA), and typical operating range is 5.17–6.0 V. Exceeding 6.0 V violates Absolute Maximum Ratings per the onsemi datasheet.
Does the NCP500SQL50T1 require an external bypass capacitor for low-noise operation?
No, the NCP500SQL50T1 does not require an external bypass capacitor. Its internal architecture achieves 50 µVRMS output noise (10 Hz–100 kHz) without one - a key differentiator from conventional LDOs. Adding a bypass capacitor may degrade startup time and offers no noise improvement per the datasheet characterization.
Can the NCP500SQL50T1 be used with a 1.0 V microcontroller GPIO to control enable?
Yes. The NCP500SQL50T1 enable input turns on at ≥0.9 V and turns off at ≤0.15 V, making it fully compatible with 1.0 V logic systems. No level-shifter is needed - direct connection to a 1.0 V GPIO satisfies both threshold and bias current (≤100 nA) requirements per the datasheet.
What is the thermal resistance (RJA) of the NCP500SQL50T1 in its DFN package?
The NCP500SQL50T1 in the DFN 2×2.2 mm package (Case 506BA) has a junction-to-ambient thermal resistance (RJA) of 225 °C/W, as specified in the Maximum Ratings table. This value assumes standard JEDEC PCB mounting conditions; actual performance improves with enhanced copper pour and thermal vias under the exposed pad.
Is the NCP500SQL50T1 pin-compatible with other NCP500 variants in the same package?
Yes - all NCP500 variants in the DFN 2×2.2 mm (SQL) package share identical pinout: Pin 1 = Enable, Pin 2 = GND, Pin 3 = VIN, Pin 4 = VOUT, Pin 5 = N/C, Pin 6 = GND. Output voltage is set internally; swapping NCP500SQL50T1 with NCP500SQL33T1 requires no PCB changes, only firmware or system-level validation of voltage tolerance.
NCP500SQL50T1 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):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.18V @ 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)
NCP500SQL50T1 FAQ
1.How can I place an order for NCP500SQL50T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP500SQL50T1 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 NCP500SQL50T1 reliable?
The price and inventory of NCP500SQL50T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP500SQL50T1 is usually 5 days.
3.What payment methods are accepted for NCP500SQL50T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP500SQL50T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP500SQL50T1?
NCP500SQL50T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP500SQL50T1 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 NCP500SQL50T1?
For technical support, including NCP500SQL50T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP500SQL50T1 requirements.
6.How does Aetrix verify that NCP500SQL50T1 is sourced from the original manufacturer or authorized distributors?
All NCP500SQL50T1 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 NCP500SQL50T1 meets industry standards.
7.What is the process for return or replacement of NCP500SQL50T1?
All NCP500SQL50T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP500SQL50T1, 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 NCP500SQL50T1 part is unused and in its original packaging.
Return procedure for NCP500SQL50T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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