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onsemi NCP500SN26T1
- Part No.:
- NCP500SN26T1
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP500SN26T1.pdf
- Description:
- IC REG LINEAR 2.6V 150MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,162
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Product details
Overview
NCP500SN26T1 from onsemi is a fixed-output, CMOS low-dropout linear regulator delivering 2.6 V at up to 150 mA. It features ultra-low dropout (170 mV at 150 mA), 50 µV RMS noise without bypass capacitor (10 Hz–100 kHz), and fast 20 µs enable turn-on time. Designed for noise-sensitive RF stages and portable instrumentation, 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 NCP500SN26T1 datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at full load, RMS noise performance in VCO biasing, thermal shutdown behavior at 160 °C, TSOP-5 package compatibility with hand-held PCB layouts, and enable logic compatibility with 1.0 V microcontroller I/O.
Technical Context
The NCP500SN26T1 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 and thermal shutdown) are integrated into a single die optimized for battery-powered systems.
It supports direct 1.0 V logic-level enable control with threshold voltages of 0.9 V (turn-on) and 0.15 V (turn-off), and achieves stable regulation using only 1.0 µF ceramic output capacitance - no minimum ESR requirement. Quiescent current remains below 300 µA across load and temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.6 V ±2.5% (2.535 V to 2.665 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 2.77 V |
| RMS Noise | 50 µV (10 Hz–100 kHz, no bypass capacitor required) |
| Enable Threshold | 0.9 V (logic high turn-on), 0.15 V (logic low turn-off); compatible with 1.0 V digital I/O |
| Quiescent Current | 180 µA typical at 150 mA load and 0.9 V enable; 0.01 µA in shutdown |
| Input Voltage Range | 1.8 V to 6.0 V; supports single-cell Li-ion (up to 4.4 V max for 2.6 V output) |
Pinout & Package
Package: TSOP-5 (Case 483), Pb-free, surface-mount, 2.8 mm × 2.9 mm × 1.1 mm profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive power supply input; accepts 1.8–6.0 V; requires 1.0 µF ceramic decoupling capacitor |
| 2 | GND | Power ground reference; low-impedance connection critical for noise immunity and thermal performance |
| 3 | Enable | Digital control input; drives regulator ON/OFF; connect to Vin if unused |
| 4 | Vout | Regulated 2.6 V output; stable with ≥1.0 µF ceramic capacitor; no ESR requirement |
| 5 | N/C | No internal connection; must be left floating or grounded per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 170 mV @ 150 mA enables use with weak or aging batteries in portable devices |
| No external bypass capacitor | 50 µV RMS noise achieved via internal low-noise architecture - saves board space and BOM cost |
| Fast enable response | 20 µs turn-on time supports dynamic power sequencing in multi-rail systems |
| 1.0 V logic-compatible enable | Direct interface with modern ultra-low-voltage MCUs eliminates level-shifting circuitry |
| Thermal & current protection | Internal shutdown at ~160 °C and current limiting prevent damage during fault conditions |
Applications
| RF Power Amplifier Bias | VCO Supply Regulation |
|---|---|
Use Scenario: Providing clean, stable bias to GaAs FET amplifiers in 2.4 GHz Wi-Fi front-ends. IC Role / Device Role / Timing Role: Low-noise LDO supplying 2.6 V to PA drain while rejecting switching noise from adjacent DC/DC converters. Use Value: 50 µV RMS noise ensures minimal phase noise degradation; 170 mV dropout preserves headroom during battery discharge. | Use Scenario: Regulating supply to voltage-controlled oscillators in GPS receivers and cellular transceivers. IC Role / Device Role / Timing Role: Precision 2.6 V reference source maintaining oscillator frequency stability under varying load and temperature. Use Value: ±2.5% output accuracy and <10 mV load regulation minimize VCO tuning drift; fast enable allows synchronized startup. |
| Portable Medical Sensor Node | Industrial Handheld Scanner |
Use Scenario: Powering analog front-end (AFE) and ADC in battery-operated pulse oximeters. IC Role / Device Role / Timing Role: Primary 2.6 V rail for low-noise signal conditioning circuitry requiring minimal supply-induced offset error. Use Value: No bypass capacitor simplifies layout near sensitive analog traces; 150 mA capacity supports intermittent LED and sensor bursts. | Use Scenario: Supplying image sensor and laser driver in rugged barcode scanners used in warehouse logistics. IC Role / Device Role / Timing Role: Main system LDO delivering regulated 2.6 V to mixed-signal SoC and peripheral drivers. Use Value: TSOP-5 package enables compact, drop-resistant PCB design; thermal shutdown protects against overheating in sealed enclosures. |
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-2602E/TT | 250 mV dropout at 250 mA; 30 µV RMS noise; SOT-23-5 package; 2.0 µA quiescent current in shutdown | Lower IQ benefits ultra-long-life coin-cell applications; higher dropout limits use with deeply discharged Li-ion | Select when lowest possible shutdown current is critical and input headroom exceeds 2.85 V |
| Torex XC6206P262MR-G | 200 mV dropout at 100 mA; 40 µV RMS noise; SOT-25 package; no enable pin | Lacks enable control - unsuitable for power sequencing; smaller footprint but lower max current (100 mA) | Select for space-constrained designs where always-on operation is acceptable and load ≤100 mA |
Compared with MCP1700T-2602E/TT and XC6206P262MR-G, the NCP500SN26T1 offers superior dropout performance at full 150 mA load and integrated enable functionality - making it optimal for battery-powered systems requiring dynamic power control and tight input voltage margins.
Availability
NCP500SN26T1 is available at Aetrix Electronics and suitable for RF front-ends, portable medical sensors, and industrial handheld scanners requiring stable component supply, long-lifecycle support, and Pb-free compliance.
Supply support for NCP500SN26T1 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 silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP500 series is designed specifically for portable battery-powered systems demanding ultra-low noise, fast enable response, and minimal external components - targeting RF, sensor, and precision analog subsystems.
FAQ
What is the maximum input voltage for NCP500SN26T1 when regulating 2.6 V output?
The NCP500SN26T1 supports input voltages from 1.8 V to 6.0 V. For reliable operation at full 150 mA load, the minimum input is 2.77 V (2.6 V + 170 mV dropout). Maximum safe input is 6.0 V per absolute maximum ratings; exceeding this risks permanent damage. Derating is recommended above 5.5 V in high-temperature environments.
Does NCP500SN26T1 require an external bypass capacitor to achieve its specified 50 µV RMS noise?
No, the NCP500SN26T1 does not require an external bypass capacitor to achieve its 50 µV RMS noise specification (10 Hz–100 kHz). This performance is enabled by its internal low-noise architecture and verified in the datasheet under test conditions with only 1.0 µF input and output ceramic capacitors. Adding a bypass capacitor provides no measurable improvement and may degrade transient response.
Can NCP500SN26T1 be used with a 1.0 V microcontroller GPIO to control its enable pin?
Yes, NCP500SN26T1 is explicitly designed for 1.0 V logic compatibility. Its enable input threshold is 0.9 V (turn-on) and 0.15 V (turn-off), allowing direct connection to 1.0 V I/O pins without level shifting. The enable bias current is only 3.0 nA typical, minimizing loading on the driving MCU pin.
What package type is used for NCP500SN26T1, and is it RoHS-compliant?
NCP500SN26T1 uses the TSOP-5 package (Case 483), measuring 2.8 mm × 2.9 mm × 1.1 mm. It is Pb-free and RoHS-compliant, as indicated by the "G" suffix in alternate part numbers (e.g., NCP500SN26T1G) and confirmed in the onsemi datasheet revision history and ordering information.
How does thermal shutdown operate in NCP500SN26T1, and what is the trip temperature?
NCP500SN26T1 incorporates internal thermal shutdown that activates at approximately 160 °C junction temperature. When triggered, the regulator disables output and remains off until junction temperature falls below the hysteresis threshold (~140 °C). This protects the device during sustained overload or poor PCB thermal design. The datasheet specifies maximum operating junction temperature as +125 °C - shutdown is a safety mechanism beyond normal operation.
NCP500SN26T1 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):
- 2.6V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.01V @ 1mA
- 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
NCP500SN26T1 FAQ
1.How can I place an order for NCP500SN26T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP500SN26T1 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 NCP500SN26T1 reliable?
The price and inventory of NCP500SN26T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP500SN26T1 is usually 5 days.
3.What payment methods are accepted for NCP500SN26T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP500SN26T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP500SN26T1?
NCP500SN26T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP500SN26T1 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 NCP500SN26T1?
For technical support, including NCP500SN26T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP500SN26T1 requirements.
6.How does Aetrix verify that NCP500SN26T1 is sourced from the original manufacturer or authorized distributors?
All NCP500SN26T1 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 NCP500SN26T1 meets industry standards.
7.What is the process for return or replacement of NCP500SN26T1?
All NCP500SN26T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP500SN26T1, 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 NCP500SN26T1 part is unused and in its original packaging.
Return procedure for NCP500SN26T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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