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onsemi NCP500SN27T1G
- Part No.:
- NCP500SN27T1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP500SN27T1G.pdf
- Description:
- IC REG LINEAR 2.7V 150MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,268
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Product details
Overview
NCP500SN27T1G from onsemi is a fixed-output, low-noise, low-dropout linear regulator delivering 2.7 V at up to 150 mA. It features an ultra-low dropout voltage of 170 mV at full load, 50 µV RMS noise (10 Hz–100 kHz) without bypass capacitor, and fast 20 µs enable turn-on time. Designed for noise-sensitive RF and portable battery-powered systems, it operates from 1.8 V to 6.0 V input and maintains ±2.5% output accuracy over −40 °C to +85 °C.
For engineers reviewing the NCP500SN27T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout performance under 150 mA load, enable logic compatibility with 1.0 V microcontrollers, ceramic-capacitor stability, thermal shutdown behavior, and automotive-grade qualification status (AEC-Q100 for NCV variants).
Technical Context
The NCP500SN27T1G uses a PMOS pass transistor architecture enabling ultra-low dropout and eliminating the need for external noise-bypass capacitors. Its internal error amplifier, voltage reference, and protection circuits (current limit, thermal shutdown) are integrated in a single die optimized for low quiescent current and high PSRR (62 dB at 1 kHz).
It supports direct 1.0 V logic-level enable control with sub-100 nA bias current and threshold voltages of 0.9 V (turn-on) and 0.15 V (turn-off), ensuring compatibility with modern low-voltage I/O standards. The device achieves stable regulation with only 1.0 µF ceramic output capacitance across its full operating temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.7 V ±2.5% (2.633 V to 2.768 V) across −40 °C to +85 °C and 1–150 mA load |
| Max Output Current | 150 mA continuous; short-circuit current limited to 200–700 mA |
| Dropout Voltage | 170 mV typical at 150 mA (measured at Vout −2.0%), enabling operation with Vin as low as 2.87 V |
| Noise Performance | 50 µV RMS (10 Hz–100 kHz), no external bypass capacitor required |
| Enable Threshold | 0.9 V logic-high turn-on; 0.15 V logic-low turn-off; compatible with 1.0 V I/O domains |
| PSRR | 62 dB at 1 kHz, supporting clean post-regulation after switching converters |
| Quiescent Current | 185 µA typical at 150 mA load and 3.2 V input; 0.01 µA in shutdown |
Pinout & Package
Package: TSOP-5 (Case 483), Pb-free, surface-mount, 5-pin plastic package with exposed pad for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive power supply input (1.8–6.0 V); requires 1.0 µF decoupling capacitor close to pin |
| 2 | GND | Power ground reference; shared return path for input, output, and enable currents |
| 3 | Enable | Active-high digital control input; drives regulator ON/OFF; connect to Vin if unused |
| 4 | Vout | Regulated 2.7 V output; stable with ≥1.0 µF ceramic capacitor; no ESR requirement |
| 5 | N/C | No internal connection; electrically isolated; must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 170 mV at 150 mA enables single-cell Li-ion (2.8 V min) and multi-cell alkaline operation |
| Noise-free operation | 50 µV RMS noise without bypass cap simplifies layout and reduces BOM count |
| Fast enable response | 20 µs turn-on time supports dynamic power sequencing in portable systems |
| Low-voltage enable | 1.0 V logic-compatible EN pin eliminates level-shifting for modern MCUs and PMICs |
| Ceramic capacitor stability | Stable with 1.0 µF ceramic output cap; no minimum ESR requirement lowers cost and size |
Applications
| RF Power Amplifier Biasing | VCO/PLL Power Supply |
|---|---|
Use Scenario: Providing clean, low-noise DC bias to GaAs or SiGe RF power amplifiers in cellular handsets and IoT transceivers. IC Role / Device Role / Timing Role: Low-dropout post-regulator supplying stable 2.7 V to PA collector/drain while rejecting SMPS ripple. Use Value: 62 dB PSRR at 1 kHz and 50 µV RMS noise prevent AM-to-PM distortion and phase noise degradation in transmit chains. |
Use Scenario: Powering voltage-controlled oscillators and phase-locked loop ICs in wireless infrastructure and test equipment. IC Role / Device Role / Timing Role: Ultra-low-noise LDO delivering regulated 2.7 V to VCO core and PLL charge pump to minimize jitter. Use Value: Absence of external bypass capacitor avoids startup delay and ensures <20 µs enable timing for fast frequency hopping. |
| Portable Medical Sensors | Automotive Camera Modules |
Use Scenario: Supplying analog front-end circuitry (ADC drivers, op-amps) in handheld ECG and pulse oximetry devices. IC Role / Device Role / Timing Role: Precision 2.7 V rail generator with ±2.5% accuracy and low thermal drift for sensor signal conditioning. Use Value: 1.0 µF ceramic stability and −40 °C to +85 °C operation support compact, battery-operated medical designs without derating. |
Use Scenario: Powering image sensor and ISP subsystems in ADAS rear-view and surround-view camera modules. IC Role / Device Role / Timing Role: AEC-Q100 qualified (NCV variant) LDO providing 2.7 V to CMOS image sensors requiring low EMI and fast transient response. Use Value: 150 mA capability, 170 mV dropout, and thermal shutdown ensure robust operation during engine cranking and ambient temperature extremes. |
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 |
|---|---|---|---|
| MCP1700T-2702E/MB | 250 mV dropout at 150 mA; 12 µA quiescent current; no enable pin; SOT-23-3 package | Lacks enable control and higher dropout limits use in low-input-voltage scenarios | Select when ultra-low IQ dominates over enable functionality and dropout is not critical |
| Torex XC6206P272MR-G | 200 mV dropout at 150 mA; 1.0 µA IQ; no enable; SOT-25 package; ±2% accuracy | Higher accuracy but no enable and lower PSRR (55 dB); not AEC-Q100 rated | Prefer for cost-sensitive consumer applications where enable and automotive compliance are unnecessary |
Compared with MCP1700T-2702E/MB and XC6206P272MR-G, the NCP500SN27T1G uniquely combines 170 mV dropout, 1.0 V enable compatibility, and 50 µV noise without bypass - making it optimal for RF and fast-sequencing portable systems where all three attributes are simultaneously required.
Availability
NCP500SN27T1G is available at Aetrix Electronics and suitable for RF power amplifier biasing, VCO/PLL power supply, portable medical sensors, and automotive camera modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for NCP500SN27T1G 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 portable, battery-powered, and noise-sensitive systems demanding ultra-low dropout, low quiescent current, and high PSRR in compact packages.
FAQ
What is the minimum input voltage required for NCP500SN27T1G to maintain regulation at 150 mA?
The NCP500SN27T1G requires a minimum input voltage of 2.87 V to maintain 2.7 V output regulation at 150 mA load, based on its typical 170 mV dropout voltage (2.7 V + 0.17 V). At worst-case conditions (−40 °C to +85 °C), dropout may reach 270 mV, requiring Vin ≥ 2.97 V for guaranteed regulation. This enables compatibility with single-cell Li-ion batteries down to ~2.9 V.
Does NCP500SN27T1G require an external noise-bypass capacitor?
No, the NCP500SN27T1G does not require an external noise-bypass capacitor. Its internal architecture delivers 50 µV RMS output noise (10 Hz–100 kHz) without one - a key differentiator versus conventional LDOs. Adding a bypass capacitor would unnecessarily increase board area, cost, and startup time without improving noise performance.
Can NCP500SN27T1G be used with 1.0 V microcontroller GPIOs to control enable?
Yes, the NCP500SN27T1G is explicitly designed for 1.0 V logic compatibility: its enable input turns the regulator ON when voltage rises above 0.9 V (typical) and OFF below 0.15 V (typical), with bias current ≤100 nA. This allows direct connection to 1.0 V I/O pins without level-shifting circuitry.
What output capacitor value and type are recommended for NCP500SN27T1G?
A minimum 1.0 µF ceramic capacitor is recommended at the Vout pin, placed as close as possible to the device. The NCP500SN27T1G is stable with zero minimum ESR and supports X5R/X7R dielectrics. Larger values (e.g., 2.2–10 µF) improve load transient response and noise rejection but are not required for stability.
Is NCP500SN27T1G qualified for automotive applications?
The NCP500SN27T1G is not automotive-qualified; however, its pin-compatible NCV500SN27T1G variant is AEC-Q100 qualified and PPAP capable. For automotive camera modules or infotainment systems requiring automotive qualification, NCV500SN27T1G must be specified - it shares identical electrical specs and TSOP-5 packaging but undergoes additional stress testing and process controls.
NCP500SN27T1G 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):
- 2.7V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.26V @ 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
NCP500SN27T1G FAQ
1.How can I place an order for NCP500SN27T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP500SN27T1G 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 NCP500SN27T1G reliable?
The price and inventory of NCP500SN27T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP500SN27T1G is usually 5 days.
3.What payment methods are accepted for NCP500SN27T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP500SN27T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP500SN27T1G?
NCP500SN27T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP500SN27T1G 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 NCP500SN27T1G?
For technical support, including NCP500SN27T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP500SN27T1G requirements.
6.How does Aetrix verify that NCP500SN27T1G is sourced from the original manufacturer or authorized distributors?
All NCP500SN27T1G 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 NCP500SN27T1G meets industry standards.
7.What is the process for return or replacement of NCP500SN27T1G?
All NCP500SN27T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP500SN27T1G, 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 NCP500SN27T1G part is unused and in its original packaging.
Return procedure for NCP500SN27T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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