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onsemi NCP500SN50T1
- Part No.:
- NCP500SN50T1
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP500SN50T1.pdf
- Description:
- IC REG LINEAR 5V 150MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,445
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Product details
Overview
NCP500SN50T1 from onsemi is a fixed-output, low-noise, 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 no external bypass capacitor required - ideal for noise-sensitive RF stages and portable instrumentation.
For engineers reviewing the NCP500SN50T1 datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at full load, enable logic compatibility down to 1.0 V, RMS noise performance (50 µV, 10 Hz–100 kHz), thermal shutdown behavior, and DFN 2×2.2 mm package footprint constraints.
Technical Context
The NCP500SN50T1 employs a PMOS pass transistor architecture enabling ultra-low dropout and fast 20 µs enable turn-on response. Its internal voltage reference, error amplifier, and protection circuits (current limit, thermal shutdown) operate without external compensation components.
Designed for ceramic-capacitor stability, it requires only 1.0 µF input and output capacitance. The enable input accepts 1.0 V logic-high threshold and draws ≤100 nA bias current, supporting direct interfacing with low-voltage microcontrollers.
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 ≥5.17 V |
| Noise Performance | 50 µV RMS (10 Hz–100 kHz, no bypass capacitor required) |
| Enable Threshold | Logic-high turn-on at ≥0.9 V; logic-low turn-off at ≤0.15 V - compatible with 1.0 V I/O systems |
| Quiescent Current | 175–210 µA (load-dependent); drops to 0.01 µA in shutdown mode |
| Operating Input Range | 1.8 V to 6.0 V - supports single-cell Li-ion (up to 4.4 V max for 5 V output) and regulated 5 V rails |
Pinout & Package
The NCP500SN50T1 is housed in a lead-free DFN 2×2.2 mm package (Case 506BA) with 6 terminals, optimized for space-constrained portable designs. Thermal pad exposed on bottom enhances power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply (1.8–6.0 V); requires 1.0 µF decoupling capacitor placed adjacent to pin |
| 2, 5 | GND | Power ground return; dual GND pins reduce impedance and improve PSRR |
| 3 | Enable | Active-high digital control; pulled to Vin if unused; slew rate >10 mV/s required for reliable switching |
| 4 | Vout | Regulated 5.0 V output; stable with 1.0 µF ceramic capacitor; no ESR minimum required |
| 6 | N/C | No internal connection; must remain unconnected or grounded per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 170 mV @ 150 mA enables use with input as low as 5.17 V for 5.0 V output - critical for battery end-of-life operation |
| Low-noise regulation | 50 µV RMS noise (10 Hz–100 kHz) without bypass capacitor - eliminates BOM cost and PCB area for noise filtering |
| Fast enable response | 20 µs typical turn-on time supports dynamic power sequencing in multi-rail systems |
| 1.0 V logic-compatible enable | 0.9 V turn-on threshold allows direct drive from 1.0 V FPGA I/O or ultra-low-power MCUs |
| Thermal & current protection | Internal thermal shutdown (160°C) and current limit (200–700 mA) prevent damage during fault conditions |
Applications
| RF Power Amplifier Bias Supply | VCO/PLL Reference Rail |
|---|---|
Use Scenario: Providing clean, stable 5.0 V bias to GaAs or SiGe RF power amplifiers in cellular handsets and IoT transceivers. IC Role / Device Role / Timing Role: Low-noise LDO supplying critical analog bias voltage; replaces noisier switching regulators or higher-dropout alternatives. Use Value: 50 µV RMS noise prevents AM-to-PM conversion and phase noise degradation in transmit chains. | Use Scenario: Delivering ultra-stable 5.0 V to voltage-controlled oscillators and PLL charge-pump circuits in wireless baseband subsystems. IC Role / Device Role / Timing Role: Precision voltage reference rail minimizing supply-induced jitter in frequency synthesis blocks. Use Value: 2.5% output accuracy and <10 mV load regulation ensure consistent VCO tuning slope and low close-in phase noise. |
| Portable Medical Sensor Front-End | Industrial Hand-Held Data Logger |
Use Scenario: Powering high-resolution ADCs, op-amps, and analog sensor signal conditioning in battery-powered ECG or pulse oximetry modules. IC Role / Device Role / Timing Role: Primary analog supply rail ensuring minimal power-supply-rejection-ratio (PSRR) impact on measurement integrity. Use Value: 62 dB ripple rejection at 1 kHz and low quiescent current extend battery life while preserving µV-level signal fidelity. | Use Scenario: Regulating 5.0 V for microcontroller, display, and SD card interfaces in ruggedized field data recorders operating from 3.7 V Li-ion batteries. IC Role / Device Role / Timing Role: Main system LDO enabling deep-sleep modes via enable pin control and maintaining regulation down to 5.17 V input. Use Value: 20 µs enable response synchronizes power-up with MCU wake events; DFN 2×2.2 mm saves board space in compact enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-5002E/MB | 250 mV dropout at 250 mA; 15 µA quiescent current; SOT-23-5 package | Lower IQ suits ultra-low-power sleep modes; higher dropout limits usable input range | Select when battery runtime dominates over input voltage headroom |
| TLS850B2TE/V33 | Automotive-grade AEC-Q100; 300 mV dropout at 500 mA; integrated watchdog and reset | Includes safety features for automotive body electronics; larger HTSOPI-8 package | Select for automotive infotainment or ADAS subsystems requiring functional safety compliance |
Compared with MCP1700T-5002E/MB and TLS850B2TE/V33, the NCP500SN50T1 delivers superior noise performance (50 µV vs. 110 µV) and lower dropout in a smaller DFN footprint, making it optimal for space- and noise-constrained portable RF and medical applications.
Availability
NCP500SN50T1 is available at Aetrix Electronics and suitable for RF front-end biasing, precision analog sensor powering, and portable instrumentation requiring stable component supply across production volumes and long-lifecycle programs.
Supply support for NCP500SN50T1 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 leader focused on energy-efficient innovation for automotive, industrial, cloud, medical, and IoT applications.
The NCP500 series is part of onsemi's precision analog portfolio, engineered specifically for battery-powered portable electronics demanding low noise, low dropout, and minimal external component count.
FAQ
What is the minimum input voltage required for NCP500SN50T1 to maintain 5.0 V regulation at 150 mA load?
The NCP500SN50T1 requires a minimum input voltage of 5.17 V to sustain 5.0 V output under 150 mA load, based on its 170 mV dropout specification measured at Vout −2.0%. This ensures stable operation near end-of-life for single-cell Li-ion batteries (nominal 3.7 V, max 4.2 V), so external pre-regulation is needed for direct battery connection.
Does NCP500SN50T1 require an external noise bypass capacitor?
No, the NCP500SN50T1 does not require an external noise bypass capacitor. Its internal low-noise architecture achieves 50 µV RMS output noise (10 Hz–100 kHz) without one - confirmed in the datasheet's "Typical Applications" and "Noise Decoupling" sections. Adding a bypass capacitor may degrade startup time and is unnecessary for specified noise performance.
Can NCP500SN50T1 be used with 1.0 V logic-level microcontrollers?
Yes, the NCP500SN50T1 enable input is fully compatible with 1.0 V logic systems: it turns on at ≥0.9 V and turns off at ≤0.15 V, with bias current ≤100 nA. This allows direct connection to 1.0 V GPIO outputs without level-shifting, simplifying interface design in ultra-low-voltage SoC-based devices.
What package type and dimensions does NCP500SN50T1 use?
The NCP500SN50T1 uses the DFN 2×2.2 mm package (Case 506BA) with 6 terminals and an exposed thermal pad. Pin 1 = Vin, Pins 2 & 5 = GND, Pin 3 = Enable, Pin 4 = Vout, Pin 6 = N/C. This compact, lead-free package supports high-density layouts and standard Type 3/4 solder paste reflow profiles.
How does thermal shutdown operate in NCP500SN50T1?
The NCP500SN50T1 incorporates internal thermal shutdown that activates at approximately 160°C junction temperature, turning off the output until the die cools by ~20°C. This protects against sustained overload or poor PCB thermal design. Recovery is automatic and does not require cycling the enable pin or input supply.
NCP500SN50T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- 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:
- 5-TSOP
NCP500SN50T1 FAQ
1.How can I place an order for NCP500SN50T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP500SN50T1 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 NCP500SN50T1 reliable?
The price and inventory of NCP500SN50T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP500SN50T1 is usually 5 days.
3.What payment methods are accepted for NCP500SN50T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP500SN50T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP500SN50T1?
NCP500SN50T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP500SN50T1 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 NCP500SN50T1?
For technical support, including NCP500SN50T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP500SN50T1 requirements.
6.How does Aetrix verify that NCP500SN50T1 is sourced from the original manufacturer or authorized distributors?
All NCP500SN50T1 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 NCP500SN50T1 meets industry standards.
7.What is the process for return or replacement of NCP500SN50T1?
All NCP500SN50T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP500SN50T1, 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 NCP500SN50T1 part is unused and in its original packaging.
Return procedure for NCP500SN50T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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