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onsemi NCP502SN50T1G
- Part No.:
- NCP502SN50T1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP502SN50T1G.pdf
- Description:
- IC REG LINEAR 5V 80MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:736
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Product details
Overview
NCP502SN50T1G from onsemi is a fixed-output, low-quiescent-current CMOS linear voltage regulator delivering 5.0 V at up to 80 mA with 40 µA typical quiescent current, 2.0% output voltage accuracy, and 600 mV dropout (at 80 mA, 5.0 V output). It operates across −40 °C to +85 °C and is housed in the TSOP-5 (SOT-23-5) package, targeting battery-powered portable electronics requiring stable, ultra-low-power regulation.
For engineers reviewing the NCP502SN50T1G datasheet, pinout, applications, or equivalent options, key selection considerations include its 5.0 V fixed output, enable-controlled standby mode, ceramic-capacitor compatibility, and thermal-limited power dissipation in compact surface-mount form.
Technical Context
The NCP502SN50T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and protection circuitry (current limit, thermal shutdown) in a single monolithic IC. Its enable input features logic-high threshold of 1.3 V and logic-low threshold of 0.3 V, supporting direct microcontroller interface without level-shifting.
Designed for low-noise, low-ESR ceramic output capacitors (≥1.0 µF), it achieves 55 dB ripple rejection at 1 kHz and 180 µVRMS output noise (100 Hz–100 kHz). Dropout voltage remains stable across temperature (−40 °C to +85 °C) and load (1–80 mA), with typical values of 600 mV at full load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±2.0% - ensures stable supply for 5 V logic, sensors, or analog circuitry without external feedback. |
| Max Output Current | 80 mA - sufficient for low-power microcontrollers, RF modules, or sensor interfaces in portable devices. |
| Quiescent Current | 40 µA typical - enables multi-year battery life in always-on or intermittently active applications. |
| Dropout Voltage | 600 mV at 80 mA - allows operation from as low as 5.6 V input while maintaining regulation. |
| Line Regulation | 0.4 mV/V - minimizes output variation when input voltage fluctuates (e.g., discharging Li-ion battery). |
| Load Regulation | 0.2 mV/mA - maintains tight output stability across dynamic load changes (e.g., MCU sleep-to-active transitions). |
| Ripple Rejection | 55 dB at 1 kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO. |
| Operating Temp Range | −40 °C to +85 °C - supports industrial and consumer-grade deployment without derating. |
Pinout & Package
Package: TSOP-5 (SOT-23-5), 3.0 mm × 1.5 mm × 0.95 mm, Pb-free, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Vin | Positive input supply | Accepts 5.6 V to 12 V input; must be decoupled with ≥1.0 µF ceramic capacitor near the pin. |
| 2 - GND | Power ground reference | Low-impedance return path for input/output currents; requires solid PCB ground plane connection. |
| 3 - Enable | Active-high enable control | Pull ≥1.3 V to activate regulator; pull ≤0.3 V to disable (reducing IQ to <0.1 µA); tie to Vin if unused. |
| 4 - N/C | No internal connection | Not bonded internally; PCB trace may be omitted or left floating-no electrical function. |
| 5 - Vout | Regulated output | Delivers stable 5.0 V; requires ≥1.0 µF ceramic output capacitor placed adjacent to pin for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical - extends battery runtime in IoT sensors and wearables where standby dominates duty cycle. |
| Ceramic capacitor compatibility | Stable with 1.0 µF+ X5R/X7R ceramics - eliminates need for costly tantalum or aluminum electrolytics. |
| Enable-controlled shutdown | Logic-compatible thresholds (1.3 V high / 0.3 V low) - enables direct GPIO control from 1.8 V or 3.3 V MCUs. |
| Thermal shutdown protection | Activates at ~160 °C junction temperature - prevents permanent damage during overload or poor heatsinking. |
| High PSRR at audio frequencies | 55 dB @ 1 kHz - effectively filters noise from shared power rails in mixed-signal handheld systems. |
| Precision output accuracy | ±2.0% over temp and load - ensures reliable operation of ADC references, comparators, and digital I/O without calibration. |
Applications
| Portable Medical Sensors | Wireless Remote Controls |
|---|---|
|
Use Scenario: Compact, battery-operated pulse oximeter or glucose meter requiring long shelf life and precise analog front-end biasing. IC Role / Device Role / Timing Role: Primary 5 V supply for op-amps, ADCs, and BLE SoC peripherals; regulated rail for reference voltage generation. Use Value: 40 µA quiescent current enables >5-year shelf life on CR2032; ±2.0% accuracy ensures consistent sensor signal chain gain and offset. |
Use Scenario: Sub-GHz RF remote with intermittent transmit bursts and extended button-wait periods. IC Role / Device Role / Timing Role: Enables fast wake-up from deep sleep by powering MCU and RF transceiver only during active intervals via EN pin. Use Value: Enable pin reduces system standby current to <0.1 µA; 600 mV dropout allows operation down to 5.6 V from two alkaline cells. |
| Industrial Handheld Scanners | Smart Home Motion Detectors |
|
Use Scenario: Rugged barcode scanner powered by rechargeable Li-ion, subject to vibration and wide ambient temperature swings. IC Role / Device Role / Timing Role: Clean 5 V rail for laser diode driver, image sensor, and USB interface IC; withstands input transients up to 12 V. Use Value: −40 °C to +85 °C rating ensures reliability in warehouse environments; 55 dB PSRR suppresses noise from motor drivers sharing same battery. |
Use Scenario: PIR-based occupancy sensor with passive infrared detector, microcontroller, and wireless transmitter operating on AA batteries. IC Role / Device Role / Timing Role: Supplies regulated 5 V to PIR signal conditioner and sub-GHz transceiver during detection events; disabled otherwise. Use Value: Ceramic-capacitor stability eliminates aging drift; 180 µVRMS noise prevents false triggers in high-gain analog stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-5002E/TT | Same 5.0 V output, 250 mA max, but higher 1.6 µA quiescent current; SOT-23-3 (no enable pin) | Lacks enable control; suited for always-on, higher-current loads where pin count is constrained | Select when enable functionality is unnecessary and >80 mA output is required. |
| TPS70650DBVR | 5.0 V output, 150 mA, 1 µA quiescent current, enable pin, but requires minimum 2.2 µF output capacitance | Higher output capacitance requirement increases BOM cost and board area vs. NCP502SN50T1G's 1.0 µF | Select when ultra-low IQ (<1 µA) is critical and ceramic capacitor size/cost is secondary. |
Compared with MCP1700T-5002E/TT and TPS70650DBVR, the NCP502SN50T1G uniquely balances ultra-low IQ (40 µA), integrated enable, minimal 1.0 µF ceramic capacitor support, and industry-standard TSOP-5 footprint-making it optimal for space-constrained, battery-sensitive designs needing controlled power sequencing.
Availability
NCP502SN50T1G is available at Aetrix Electronics and suitable for portable medical sensors, wireless remote controls, and industrial handheld scanners requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP502SN50T1G 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, and consumer markets.
The NCP502 series belongs to onsemi's low-dropout linear regulator product line, engineered specifically for handheld communication equipment and portable battery-powered devices demanding ultra-low quiescent current and small-footprint packaging.
FAQ
What is the maximum input voltage rating for the NCP502SN50T1G?
The NCP502SN50T1G has an absolute maximum input voltage of 12 V, as specified in the Maximum Ratings table. Operation above this voltage risks permanent device damage. For reliable 5.0 V regulation, the recommended input range is 5.6 V (5.0 V + dropout) to 12 V, with thermal limits applying at higher loads and ambient temperatures.
Does the NCP502SN50T1G require an external resistor network to set the output voltage?
No, the NCP502SN50T1G is a fixed-output regulator with factory-trimmed 5.0 V output. It contains internal resistors and does not support adjustable output via external feedback components. This simplifies design and improves accuracy versus adjustable LDOs requiring external resistor matching.
Can the NCP502SN50T1G operate with a 1.0 µF ceramic output capacitor?
Yes, the NCP502SN50T1G is explicitly designed and characterized for stability with 1.0 µF ceramic capacitors (X5R/X7R dielectrics), as confirmed in the Applications Information section. Larger values improve transient response and noise suppression but are not required for basic regulation.
What is the thermal resistance (RJA) of the NCP502SN50T1G in its TSOP-5 package?
The NCP502SN50T1G in the TSOP-5 (Case 483) package has a junction-to-ambient thermal resistance (RJA) of 205 °C/W under standard test conditions (1 oz copper, 100 mm² pad). This value assumes a specific PCB layout; actual thermal performance depends on copper area, layer count, and airflow.
Is the NCP502SN50T1G pin-compatible with other variants in the NCP502 family?
Yes, all NCP502 variants-including NCP502SN35T1G, NCP502SN36T1G, and NCP502SN50T1G-share identical TSOP-5 pinout and package dimensions. Only the output voltage and marking code differ; no PCB redesign is needed when substituting between voltage options within the same suffix family.
NCP502SN50T1G 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):
- 12V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.9V @ 80mA
- Current - Output:
- 80mA
- Current - Quiescent (Iq):
- 40 µA
- Current - Supply (Max):
- 90 µA
- PSRR:
- 55dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-TSOP
NCP502SN50T1G FAQ
1.How can I place an order for NCP502SN50T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP502SN50T1G 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 NCP502SN50T1G reliable?
The price and inventory of NCP502SN50T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP502SN50T1G is usually 5 days.
3.What payment methods are accepted for NCP502SN50T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP502SN50T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP502SN50T1G?
NCP502SN50T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP502SN50T1G 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 NCP502SN50T1G?
For technical support, including NCP502SN50T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP502SN50T1G requirements.
6.How does Aetrix verify that NCP502SN50T1G is sourced from the original manufacturer or authorized distributors?
All NCP502SN50T1G 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 NCP502SN50T1G meets industry standards.
7.What is the process for return or replacement of NCP502SN50T1G?
All NCP502SN50T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP502SN50T1G, 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 NCP502SN50T1G part is unused and in its original packaging.
Return procedure for NCP502SN50T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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