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onsemi NCP502SN30T1G
- Part No.:
- NCP502SN30T1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP502SN30T1G.pdf
- Description:
- IC REG LINEAR 3V 80MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,110
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Product details
Overview
NCP502SN30T1G from onsemi is a fixed-output, low-quiescent-current CMOS linear voltage regulator delivering 3.0 V at up to 80 mA with 2.0% output voltage accuracy and 40 µA typical quiescent current. It features PMOS pass transistor architecture, thermal shutdown, current limiting, and operates across −40 °C to +85 °C. It powers battery-sensitive subsystems such as RF front-ends in portable instrumentation.
For engineers reviewing the NCP502SN30T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 80 mA (850 mV), enable threshold compatibility (1.3 V high / 0.3 V low), SC70-5/TSOP-5 package footprint constraints, and ceramic capacitor stability with 1.0 µF input/output.
Technical Context
The NCP502SN30T1G implements a PMOS-based LDO topology with internal voltage reference, error amplifier, and protection circuitry (current limit and thermal shutdown). Its ultra-low 40 µA quiescent current enables multi-week standby in coin-cell-powered devices.
It achieves 55 dB ripple rejection at 1 kHz and 180 µVrms output noise (100 Hz–100 kHz), supporting noise-sensitive analog signal chains. The device requires no minimum load and remains stable with ceramic capacitors as low as 1.0 µF, eliminating ESR dependency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±2.0% - tightly regulated rail for MCU core or sensor interface logic |
| Max Output Current | 80 mA - sufficient for low-power microcontrollers, sensors, and RF ICs |
| Quiescent Current | 40 µA typical - enables >1-year battery life in 10 µA sleep-mode systems |
| Dropout Voltage | 850 mV at 80 mA - supports operation down to Vin = 3.85 V while maintaining regulation |
| Line Regulation | 0.4 mV/V - ensures <±1.2 mV output shift over 4–12 V input range |
| Load Regulation | 0.2 mV/mA - guarantees <±16 mV deviation from 1 mA to 80 mA load step |
| Ripple Rejection | 55 dB at 1 kHz - suppresses switching noise from upstream DC/DC converters |
| Operating Temp | −40 °C to +85 °C - qualified for industrial-grade portable equipment |
Pinout & Package
Package: TSOP-5 (SOT-23-5, Case 483), 3.00 × 1.50 × 0.95 mm, Pb-free, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Vin | Positive power supply input | Accepts 3.85–12 V input; must be decoupled with ≥1.0 µF ceramic capacitor near pin |
| 2 - GND | Power supply ground | Primary return path for input, output, and internal bias currents; requires low-impedance PCB pour |
| 3 - Enable | Active-high enable control | Pull ≥1.3 V to activate regulator; pull ≤0.3 V to disable (IQ drops to 0.1 µA) |
| 4 - N/C | No internal connection | Unbonded die pad; may be left floating or tied to GND for mechanical stability only |
| 5 - Vout | Regulated output voltage | Delivers stable 3.0 V ±2.0%; requires ≥1.0 µF ceramic output capacitor for transient response |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical - extends battery runtime in always-on IoT edge nodes |
| Ceramic capacitor compatible | Stable with 1.0 µF output capacitance - eliminates need for costly tantalum or high-ESR caps |
| Enable control with defined thresholds | 1.3 V turn-on / 0.3 V turn-off - interoperable with 1.8 V and 3.3 V logic families |
| Thermal and current protection | Internal shutdown at ~160 °C and foldback current limit - prevents damage during overload or poor heatsinking |
| Low output noise | 180 µVrms (100 Hz–100 kHz) - suitable for ADC references and precision analog front-ends |
| High ripple rejection | 55 dB @ 1 kHz - maintains clean 3.0 V supply despite noisy DC/DC switching artifacts |
Applications
| Portable Medical Sensors | Industrial Handheld Meters |
|---|---|
|
Use Scenario: Continuous glucose monitor (CGM) using coin-cell battery and low-power BLE SoC. IC Role / Device Role / Timing Role: Primary 3.0 V supply for sensor signal conditioning and BLE radio transceiver. Use Value: 40 µA IQ enables >2-year battery life; 850 mV dropout allows full utilization of declining battery voltage. |
Use Scenario: Battery-powered multimeter with LCD display and precision ADC. IC Role / Device Role / Timing Role: Clean 3.0 V rail for 24-bit sigma-delta ADC and microcontroller core. Use Value: 180 µVrms noise and 55 dB ripple rejection prevent measurement drift and digitization errors. |
| Wireless Remote Controls | Smart Home Sensor Nodes |
|
Use Scenario: Sub-GHz remote with motion wake-up and button press transmission. IC Role / Device Role / Timing Role: Always-on 3.0 V supply for ultra-low-power MCU and RF transceiver in deep-sleep mode. Use Value: Enable pin allows full system shutdown (0.1 µA IQ); 2.0% output accuracy ensures reliable brown-out detection. |
Use Scenario: Zigbee temperature/humidity node powered by AA batteries. IC Role / Device Role / Timing Role: Regulated 3.0 V source for humidity sensor, MCU, and 2.4 GHz transceiver during active bursts. Use Value: 80 mA output supports simultaneous sensor readout and RF transmission; TSOP-5 footprint fits compact PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3002E/MB | 3.0 V, 250 mA, 1.6 µA IQ, SOT-23-3 (no enable) | Higher current but no enable pin; lacks thermal/current protection | Select when ultra-low IQ dominates and enable control is unnecessary |
| TPS7A0530PDBVR | 3.0 V, 200 mA, 25 µA IQ, SOT-23-5 with enable, 170 mV dropout @ 100 mA | Lower dropout and higher current, but requires ≥2.2 µF output cap for stability | Select when lower dropout or higher load current is required and board space allows larger output capacitor |
Compared with MCP1700T-3002E/MB and TPS7A0530PDBVR, the NCP502SN30T1G offers balanced trade-offs: moderate 80 mA current, integrated enable with logic-compatible thresholds, robust protection, and guaranteed stability with minimal 1.0 µF ceramic output capacitance-ideal for space-constrained, battery-critical designs where reliability and simplicity matter.
Availability
NCP502SN30T1G is available at Aetrix Electronics and suitable for portable medical sensors, industrial handheld meters, wireless remote controls, and smart home sensor nodes requiring stable component supply with long-term manufacturability assurance.
Supply support for NCP502SN30T1G 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, cloud, and consumer markets.
The NCP502 series belongs to onsemi's low-power linear regulator product line, engineered specifically for battery-operated portable electronics demanding ultra-low quiescent current, small footprint, and ceramic-capacitor compatibility.
FAQ
What is the maximum input voltage rating for the NCP502SN30T1G?
The NCP502SN30T1G has an absolute maximum input voltage of 12 V, as specified in the Maximum Ratings table. Operation above this level risks permanent damage. For reliable 3.0 V regulation at 80 mA, minimum input is 3.85 V (3.0 V + 850 mV dropout); design margin recommends Vin ≥ 4.5 V under worst-case conditions.
Does the NCP502SN30T1G require an external capacitor on the Enable pin?
No, the NCP502SN30T1G does not require an external capacitor on the Enable pin. The enable input is CMOS-compatible with high impedance; it functions reliably with direct connection to MCU GPIO or resistive divider. Adding capacitance may slow enable/disable transitions and is unnecessary unless intentional soft-start behavior is needed.
Can the NCP502SN30T1G operate without an output capacitor?
No - the NCP502SN30T1G requires a minimum 1.0 µF ceramic output capacitor for stability and transient response, as confirmed in the Applications Information section. Omitting COUT risks oscillation, poor load regulation, and failure to meet ripple rejection or noise specifications. Larger values improve performance but are not mandatory.
Is the NCP502SN30T1G pin-compatible with other variants in the NCP502 family?
Yes - all NCP502 variants in TSOP-5 (SN suffix) share identical pinout, package dimensions, and terminal functions. The NCP502SN28T1G, NCP502SN29T1G, and NCP502SN30T1G differ only in output voltage (2.8 V, 2.9 V, 3.0 V); they are mechanically and electrically interchangeable on the same PCB layout.
What is the thermal resistance (RJA) of the NCP502SN30T1G in its TSOP-5 package?
The NCP502SN30T1G in TSOP-5 (Case 483) has a junction-to-ambient thermal resistance (RJA) of 205 °C/W under standard test conditions: 1 oz copper, 100 mm² pad area on FR4 PCB. This value assumes optimal PCB thermal design; actual RJA will increase with smaller copper areas or higher ambient temperatures.
NCP502SN30T1G 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):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.2V @ 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
NCP502SN30T1G FAQ
1.How can I place an order for NCP502SN30T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP502SN30T1G 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 NCP502SN30T1G reliable?
The price and inventory of NCP502SN30T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP502SN30T1G is usually 5 days.
3.What payment methods are accepted for NCP502SN30T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP502SN30T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP502SN30T1G?
NCP502SN30T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP502SN30T1G 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 NCP502SN30T1G?
For technical support, including NCP502SN30T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP502SN30T1G requirements.
6.How does Aetrix verify that NCP502SN30T1G is sourced from the original manufacturer or authorized distributors?
All NCP502SN30T1G 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 NCP502SN30T1G meets industry standards.
7.What is the process for return or replacement of NCP502SN30T1G?
All NCP502SN30T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP502SN30T1G, 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 NCP502SN30T1G part is unused and in its original packaging.
Return procedure for NCP502SN30T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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