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onsemi NCP502SQ36T2G
- Part No.:
- NCP502SQ36T2G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP502SQ36T2G.pdf
- Description:
- IC REG LINEAR 3.6V 80MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:2,189
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Product details
Overview
NCP502SQ36T2G from onsemi is a fixed-output, low-quiescent-current CMOS linear voltage regulator delivering 3.6 V at up to 80 mA with 2.0% output voltage accuracy and 850 mV typical dropout at 80 mA. It features PMOS pass transistor architecture, ultra-low 40 µA quiescent current, and operates across −40 °C to +85 °C for battery-powered portable electronics.
For engineers reviewing the NCP502SQ36T2G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at full load, enable threshold compatibility (1.3 V high / 0.3 V low), SC70-5 thermal resistance (400 °C/W), and ceramic capacitor stability with ≥1.0 µF output capacitance.
Technical Context
The NCP502SQ36T2G implements a PMOS-based LDO architecture with internal voltage reference, error amplifier, and thermal shutdown protection. Its enable input supports logic-level control with defined high/low thresholds, and it requires no minimum load or specific ESR output capacitors.
Designed for low-noise, low-power operation, it achieves 55 dB ripple rejection at 1 kHz and 180 µVRMS output noise (100 Hz–100 kHz). The device is stable with ceramic or tantalum output capacitors ≥1.0 µF and exhibits excellent line regulation (0.4 mV/V typical) and load regulation (0.2 mV/mA typical).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.6 V ±2.0% - tightly regulated rail for 3.3 V–3.6 V logic or analog circuitry requiring stable bias. |
| Max Output Current | 80 mA - sufficient for microcontrollers, sensors, or RF front-ends in space-constrained portable devices. |
| Quiescent Current | 40 µA typical - enables multi-year battery life in always-on or low-duty-cycle applications. |
| Dropout Voltage | 850 mV typical at 80 mA - allows operation from single-cell Li-ion (3.0 V min) or two-cell alkaline (3.2 V min) sources. |
| Line Regulation | 0.4 mV/V typical - minimizes output variation during battery discharge or supply ripple. |
| Ripple Rejection | 55 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
| Operating Temp | −40 °C to +85 °C - qualified for industrial and consumer-grade portable equipment environments. |
| Package | SC70-5 (Case 419A) - 2.0 × 1.25 × 0.95 mm surface-mount package enabling ultra-compact PCB layouts. |
Pinout & Package
SC70-5 package (Case 419A), 5-pin surface-mount, Pb-free, moisture-sensitive level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply - accepts 1.3 V to 12 V; must be decoupled with ≥1.0 µF ceramic capacitor near pin. |
| 2 | GND | Power ground - low-impedance return path critical for noise immunity and thermal performance. |
| 3 | Enable | Logic-controlled ON/OFF - active-high with 1.3 V turn-on threshold; tie to Vin if unused. |
| 4 | N/C | No internal connection - floating or grounded; no electrical function or routing required. |
| 5 | Vout | Regulated 3.6 V output - requires ≥1.0 µF ceramic capacitor (low ESR) directly at pin for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical - extends battery runtime in standby and sleep modes without compromising regulation. |
| Ceramic capacitor compatible | 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. |
| High PSRR at 1 kHz | 55 dB - effectively isolates sensitive analog or RF circuitry from noisy DC-DC switcher inputs. |
| Precision output accuracy | ±2.0% over temp and load - ensures reliable operation of voltage-sensitive peripherals without external trimming. |
| Low dropout at full load | 850 mV @ 80 mA - enables higher efficiency and longer usable battery range compared to standard LDOs. |
Applications
| Portable Medical Sensors | Wireless IoT End Nodes |
|---|---|
|
Use Scenario: Continuous glucose monitor (CGM) sensor node powered by coin cell, operating 24/7 with periodic BLE transmission. IC Role / Device Role / Timing Role: Primary 3.6 V power rail regulator for analog front-end and BLE SoC, enabled only during active measurement/transmit cycles. Use Value: 40 µA quiescent current enables >3-year battery life; 850 mV dropout allows full utilization of CR2032 voltage range (3.0–3.3 V). |
Use Scenario: Battery-powered environmental sensor node (temp/humidity/pressure) reporting via LoRaWAN every 15 minutes. IC Role / Device Role / Timing Role: Low-noise 3.6 V supply for precision ADC and sub-GHz transceiver, disabled between sampling intervals. Use Value: 180 µVRMS output noise avoids ADC quantization errors; SC70-5 footprint saves board area in compact enclosure. |
| Handheld Test Instruments | Industrial Hand Scanners |
|
Use Scenario: Pocket-sized multimeter with LCD display, microcontroller, and analog measurement circuitry. IC Role / Device Role / Timing Role: Main 3.6 V regulator for MCU core, display driver, and precision op-amps, supporting both battery and USB power inputs. Use Value: 2.0% output accuracy ensures consistent ADC reference and display contrast; 55 dB PSRR rejects USB switcher noise. |
Use Scenario: Rugged barcode scanner using dual AA batteries, requiring reliable operation across −20 °C to +60 °C ambient. IC Role / Device Role / Timing Role: Stable 3.6 V rail for laser diode driver, image sensor, and ARM Cortex-M MCU in intermittent-use industrial setting. Use Value: −40 °C to +85 °C rating guarantees startup and regulation at cold warehouse temperatures; thermal shutdown prevents latch-up during extended scanning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3602E/TT | 3.6 V fixed, 250 mA max, 1.6 µA IQ, SOT-23-3 package (no enable) | Lacks enable pin and thermal shutdown; lower IQ but higher dropout (600 mV @ 250 mA) | Choose when ultra-low IQ dominates and enable control is unnecessary; verify thermal margin at full load. |
| TN0360D | 3.6 V fixed, 150 mA max, 50 µA IQ, SC70-5 package, enable pin with 0.9 V threshold | Higher enable threshold (0.9 V vs. 0.3 V low) and wider temp range (−40 °C to +125 °C) | Prefer for automotive-adjacent designs needing wider temp coverage; confirm enable logic compatibility with host MCU. |
Compared with MCP1700T-3602E/TT and TN0360D, the NCP502SQ36T2G offers balanced performance: moderate IQ (40 µA), integrated enable with precise thresholds, robust thermal protection, and proven ceramic-capacitor stability - making it optimal for cost- and size-sensitive portable electronics where reliability and ease of use are prioritized.
Availability
NCP502SQ36T2G is available at Aetrix Electronics and suitable for portable medical sensors, wireless IoT end nodes, handheld test instruments, and industrial hand scanners requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for NCP502SQ36T2G 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 NCP502SQ36T2G belongs to the NCP502 series of ultra-low-IQ CMOS LDO regulators, designed specifically for handheld communication equipment and battery-powered portable applications demanding minimal standby power and small form factor.
FAQ
What is the maximum input voltage rating for the NCP502SQ36T2G?
The NCP502SQ36T2G has an absolute maximum input voltage of 12 V, as specified in the Maximum Ratings table. Operation above this voltage risks permanent damage. For reliable 3.6 V regulation, Vin should remain ≥4.45 V (3.6 V + 850 mV dropout) under full 80 mA load, with derating recommended above 85 °C ambient.
Does the NCP502SQ36T2G require an external pull-up resistor on the Enable pin?
No, the NCP502SQ36T2G does not require an external pull-up resistor on the Enable pin. If the enable function is unused, the datasheet explicitly states that the pin should be connected directly to Vin. The internal circuitry is designed for direct logic-level interfacing without external biasing components.
Can the NCP502SQ36T2G operate with a 1.0 µF ceramic capacitor on the output?
Yes, the NCP502SQ36T2G is fully stable with a 1.0 µF ceramic capacitor on the output, as confirmed in the Applications Information section. TDK part numbers C2012X5R1C105K and C1608X5R1A105K are recommended. Larger values improve transient response and noise rejection but are not required for basic stability.
What is the thermal resistance (RJA) of the NCP502SQ36T2G in its SC70-5 package?
The NCP502SQ36T2G in SC70-5 (Case 419A) has a junction-to-ambient thermal resistance (RJA) of 400 °C/W under standard test conditions (1 oz copper, 100 mm² pad area). This value assumes a single-component layout on FR4; actual board-level RJA will vary based on copper area, layer count, and airflow.
Is the NCP502SQ36T2G pin-compatible with other variants in the NCP502 family?
Yes, all SC70-5 packaged NCP502 variants-including NCP502SQ34T2G, NCP502SQ35T2G, and NCP502SQ36T2G-share identical pinout, package dimensions, and electrical interface. Only the output voltage and marking code differ; no PCB redesign is needed when substituting within the same package suffix (SQ).
NCP502SQ36T2G 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):
- 3.6V
- 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:
- SC-88A (SC-70-5/SOT-353)
NCP502SQ36T2G FAQ
1.How can I place an order for NCP502SQ36T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP502SQ36T2G 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 NCP502SQ36T2G reliable?
The price and inventory of NCP502SQ36T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP502SQ36T2G is usually 5 days.
3.What payment methods are accepted for NCP502SQ36T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP502SQ36T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP502SQ36T2G?
NCP502SQ36T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP502SQ36T2G 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 NCP502SQ36T2G?
For technical support, including NCP502SQ36T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP502SQ36T2G requirements.
6.How does Aetrix verify that NCP502SQ36T2G is sourced from the original manufacturer or authorized distributors?
All NCP502SQ36T2G 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 NCP502SQ36T2G meets industry standards.
7.What is the process for return or replacement of NCP502SQ36T2G?
All NCP502SQ36T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP502SQ36T2G, 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 NCP502SQ36T2G part is unused and in its original packaging.
Return procedure for NCP502SQ36T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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