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onsemi NCP502SQ25T2G
- Part No.:
- NCP502SQ25T2G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP502SQ25T2G.pdf
- Description:
- IC REG LINEAR 2.5V 80MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:3,601
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Product details
Overview
NCP502SQ25T2G from onsemi is a fixed-output, low-quiescent-current CMOS linear voltage regulator delivering 2.5 V at up to 80 mA with 40 µA typical quiescent current, 2.0% output voltage accuracy, and 1000 mV dropout at 80 mA - designed for battery-powered portable electronics requiring stable low-power biasing.
For engineers reviewing the NCP502SQ25T2G datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low IQ operation, SC70-5 package footprint compatibility, enable threshold logic (1.3 V high / 0.3 V low), thermal shutdown protection, and ceramic capacitor stability without ESR constraints.
Technical Context
The NCP502SQ25T2G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and protection circuitry (current limit and thermal shutdown) in a single die. Its architecture enables stable regulation with 1.0 µF ceramic input/output capacitors and eliminates need for minimum load or ESR tuning.
It operates across −40 °C to +85 °C ambient, supports input voltages up to 12 V, and features enable-controlled standby mode with 0.1 µA shutdown current. Dropout voltage is specified at 1000 mV (typical) under full 80 mA load at 2.5 V output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±2.0% (±50 mV) - ensures stable core/bias rail for low-voltage microcontrollers and sensors |
| Max Output Current | 80 mA - sufficient for powering RF modules, display drivers, or sensor signal chains |
| Quiescent Current | 40 µA typical - extends battery life in always-on wearable or IoT edge nodes |
| Dropout Voltage | 1000 mV @ 80 mA - allows operation from single-cell Li-ion (3.0–4.2 V) or two-cell alkaline (up to 3.2 V) |
| Line Regulation | 0.4 mV/V - maintains tight output stability across wide input voltage swings (e.g., battery discharge) |
| Ripple Rejection | 55 dB @ 1 kHz - suppresses switching noise from upstream DC/DC converters |
| Enable Threshold | 1.3 V (ON), 0.3 V (OFF) - compatible with 1.8 V/3.3 V GPIO without level-shifting |
Pinout & Package
Package: SC70-5 (Case 419A), 1.25 mm × 1.65 mm × 0.95 mm, Pb-free, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Vin | Positive power supply input | Accepts 2.8 V to 12 V input; must be decoupled with ≥1.0 µF ceramic capacitor near pin |
| 2 - GND | Power ground reference | Low-impedance return path for input/output currents; requires solid PCB ground plane |
| 3 - Enable | Active-high enable control | Pull ≥1.3 V to activate regulator; pull ≤0.3 V to disable (0.1 µA shutdown current) |
| 4 - N/C | No internal connection | Not bonded; may be left floating or tied to GND - no electrical function |
| 5 - Vout | Regulated output voltage | Delivers 2.5 V ±2.0%; requires ≥1.0 µF ceramic output capacitor for transient stability |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical - enables >1-year battery life in 10 µA average-load applications |
| Ceramic capacitor compatibility | Stable with 1.0 µF X5R/X7R ceramics - eliminates need for costly tantalum or aluminum electrolytics |
| Thermal shutdown protection | Activates at ~160 °C junction temperature - prevents permanent damage during overload or poor heatsinking |
| Output voltage accuracy | ±2.0% over temperature and load - reduces need for post-regulation trimming in production |
| Enable logic thresholds | 1.3 V high / 0.3 V low - interoperable with 1.8 V and 3.3 V digital I/O without external level shifters |
Applications
| Wearable Health Monitors | Bluetooth LE Sensor Nodes |
|---|---|
Use Scenario: Continuous ECG/PPG sensing powered by coin-cell or thin-film battery. IC Role / Device Role / Timing Role: Primary 2.5 V bias rail for analog front-end and BLE SoC sleep-mode regulation. Use Value: 40 µA IQ minimizes standby drain; SC70-5 footprint saves space on compact flex PCBs. |
Use Scenario: Battery-operated environmental sensor transmitting data every 5 seconds via Bluetooth Low Energy. IC Role / Device Role / Timing Role: Stable 2.5 V supply for ADC, temperature/humidity sensor, and BLE radio during active transmit bursts. Use Value: 1000 mV dropout allows full utilization of 3.0 V nominal CR2032 voltage range; 55 dB ripple rejection cleans DC/DC switching noise. |
| Industrial Handheld Scanners | Smart Home Motion Sensors |
Use Scenario: Ruggedized barcode scanner using single Li-ion cell with frequent high-current laser/decoder pulses. IC Role / Device Role / Timing Role: Local 2.5 V LDO for image sensor interface and decode ASIC, enabled only during scan cycles. Use Value: Enable pin allows synchronous power gating; 80 mA peak current supports burst-mode imaging without brownout. |
Use Scenario: PIR-based occupancy detector with ultra-low-power MCU and wireless transceiver operating on AA batteries. IC Role / Device Role / Timing Role: Always-on 2.5 V rail for PIR signal conditioning and MCU RTC, disabled during deep-sleep intervals. Use Value: 0.1 µA shutdown current preserves battery during 99.9% sleep time; ±2.0% accuracy ensures consistent sensor calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-IQ LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2502E/TT | 250 mA max output, 1.8 µA IQ, SOT-23-3 (no enable) | Lacks enable pin and thermal shutdown; higher output current but lower integration | Select when ultra-low IQ dominates and enable control is unnecessary |
| TCS2115-2.5V | 200 mA max output, 50 µA IQ, SC70-5, integrated soft-start | Includes soft-start (1.5 ms); slightly higher IQ but better inrush control for sensitive loads | Select when inrush current limiting is required for downstream capacitive loads |
Compared with MCP1700T-2502E/TT and TCS2115-2.5V, the NCP502SQ25T2G offers balanced trade-offs: moderate 80 mA output, industry-leading 40 µA IQ, full enable + thermal protection in SC70-5, making it optimal for space-constrained, battery-critical designs where feature completeness matters more than absolute minimum IQ or maximum current.
Availability
NCP502SQ25T2G is available at Aetrix Electronics and suitable for wearable health monitors, Bluetooth LE sensor nodes, industrial handheld scanners, and smart home motion sensors requiring stable component supply with long-term manufacturability assurance.
Supply support for NCP502SQ25T2G 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, sensor, and connectivity solutions for automotive, industrial, and consumer markets.
The NCP502 series belongs to onsemi's precision low-dropout regulator product line, engineered specifically for ultra-low-power portable electronics where battery longevity, small footprint, and robustness under variable load/temperature conditions are critical design requirements.
FAQ
What is the maximum input voltage rating for the NCP502SQ25T2G?
The NCP502SQ25T2G has an absolute maximum input voltage rating of 12 V, as specified in the Maximum Ratings table. Operation above this voltage risks permanent device damage. For reliable 2.5 V output regulation, input should remain ≥3.5 V (2.5 V + 1000 mV dropout) across temperature and load extremes.
Does the NCP502SQ25T2G require an external resistor network to set its output voltage?
No, the NCP502SQ25T2G is a fixed-output regulator with internally trimmed 2.5 V reference and feedback resistors. No external resistors are needed - the output voltage is factory-set and guaranteed within ±2.0% tolerance over temperature and load.
Can the NCP502SQ25T2G operate without an output capacitor?
No - the NCP502SQ25T2G requires a minimum 1.0 µF ceramic output capacitor (COUT) for stability and transient response, as confirmed in the Applications Information section. Omitting COUT risks oscillation, overshoot, or failure to regulate under load changes.
What is the thermal resistance (RJA) of the NCP502SQ25T2G in its SC70-5 package?
The NCP502SQ25T2G in SC70-5 package has a junction-to-ambient thermal resistance (RJA) of 400 °C/W under standard test conditions (80 × 80 × 15 mm FR4 PCB, 1 oz copper, 100 mm² spreading area). This value determines safe power dissipation limits at given ambient temperatures.
Is the NCP502SQ25T2G pin-compatible with other variants in the NCP502 family?
Yes - all SC70-5 packaged NCP502 variants (e.g., NCP502SQ15T2G, NCP502SQ33T2G) share identical pinout, package dimensions, and terminal functions. Only the output voltage and top-marking code differ; PCB layout is fully reusable across the SQ-suffix family.
NCP502SQ25T2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.4V @ 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:
- SC-88A (SC-70-5/SOT-353)
NCP502SQ25T2G FAQ
1.How can I place an order for NCP502SQ25T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP502SQ25T2G 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 NCP502SQ25T2G reliable?
The price and inventory of NCP502SQ25T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP502SQ25T2G is usually 5 days.
3.What payment methods are accepted for NCP502SQ25T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP502SQ25T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP502SQ25T2G?
NCP502SQ25T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP502SQ25T2G 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 NCP502SQ25T2G?
For technical support, including NCP502SQ25T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP502SQ25T2G requirements.
6.How does Aetrix verify that NCP502SQ25T2G is sourced from the original manufacturer or authorized distributors?
All NCP502SQ25T2G 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 NCP502SQ25T2G meets industry standards.
7.What is the process for return or replacement of NCP502SQ25T2G?
All NCP502SQ25T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP502SQ25T2G, 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 NCP502SQ25T2G part is unused and in its original packaging.
Return procedure for NCP502SQ25T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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