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onsemi NCP698SQ50T1G
- Part No.:
- NCP698SQ50T1G
- Manufacturer:
- onsemi
- Package:
- SC-82A, SOT-343
- Datasheet:
-
NCP698SQ50T1G.pdf
- Description:
- IC REG LINEAR 5V 150MA SC82AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,628
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Product details
Overview
NCP698SQ50T1G from onsemi is a fixed-output, 5.0 V, 150 mA CMOS low-dropout linear regulator optimized for ultra-low quiescent current (2.5 µA typical) and battery-powered applications. It features an enable pin for ON/OFF control, operates across −40 °C to +85 °C, and uses a PMOS pass transistor to achieve low dropout voltage (140 mV at 80 mA, 280 mV at 150 mA). It is designed for handheld instruments and portable devices requiring stable, low-noise 5.0 V supply with minimal standby power draw.
For engineers reviewing the NCP698SQ50T1G datasheet, pinout, applications, or equivalent options, this page delivers verified specifications, SC82-AB package details, functional pin roles, real-world use cases in battery-constrained systems, and two validated alternative LDOs with documented parameter and application differences.
Technical Context
The NCP698SQ50T1G integrates a voltage reference, error amplifier, PMOS power transistor, and protection circuits (current limit, thermal shutdown) in a single die. Its enable input accepts logic-level control (VTH(en) = 0.3 V to 1.3 V), and it achieves regulation stability with only 0.1 µF ceramic output capacitance.
It delivers 5.0 V ±2.0% output accuracy over temperature and load, supports input voltages up to 6.0 V, and maintains ultra-low ground current (2.5 µA typical at IOUT = 0–150 mA), making it suitable for always-on subsystems where leakage and standby power are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2.0% - tightly regulated rail for microcontrollers or sensors requiring precise 5.0 V bias. |
| Quiescent Current | 2.5 µA typical - enables multi-year operation from coin-cell batteries in low-duty-cycle monitoring nodes. |
| Max Output Current | 150 mA - sufficient for powering small MCUs, RF transceivers, or analog front-ends in portable gear. |
| Dropout Voltage | 140 mV at 80 mA - allows operation down to 5.14 V input while sustaining 5.0 V output, extending battery runtime. |
| Operating Temp Range | −40 °C to +85 °C - qualified for industrial and consumer outdoor portable equipment environments. |
| Enable Threshold | 0.3 V (low) / 1.3 V (high) - compatible with 1.8 V or 3.3 V GPIO without level-shifting. |
| Input Voltage Range | Up to 6.0 V - supports single-cell Li-ion (4.2 V max), dual-cell alkaline (3.2 V), or 5 V USB-supplied systems. |
Pinout & Package
The NCP698SQ50T1G is housed in the SC82-AB (also known as SC70-4) surface-mount package - a 1.8 mm × 1.3 mm, 4-pin micro-miniature outline with 0.65 mm pitch and Pb-free finish (Case 419C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Power supply ground reference; must be connected to low-impedance PCB ground plane for noise immunity and thermal performance. |
| 2 | Vin | Positive input supply pin; accepts 1.8 V to 6.0 V; requires local 1.0 µF decoupling capacitor placed adjacent to pin. |
| 3 | Vout | Regulated 5.0 V output; minimum 0.1 µF ceramic capacitor required; ESR-insensitive for flexible capacitor selection. |
| 4 | Enable | Active-high digital control input; pulls device into ultra-low-IQ shutdown (<1.0 µA) when held ≤0.3 V; tie to Vin if unused. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 2.5 µA typical - reduces battery drain during sleep modes, enabling >10-year shelf life in IoT endpoint designs. |
| PMOS pass transistor architecture | Eliminates reverse-current path and enables true zero-IQ shutdown when disabled - critical for energy harvesting systems. |
| 0.1 µF minimum output capacitance | Enables use of tiny, low-cost ceramic capacitors - reduces BOM count and PCB area vs. traditional LDOs requiring ≥1 µF. |
| ±2.0% output voltage accuracy | Ensures reliable operation of 5.0 V-tolerant peripherals (e.g., USB PHYs, logic interfaces) without external trimming. |
| Thermal shutdown protection | Activates at ~160 °C junction temperature - prevents damage during transient overload or poor heatsinking conditions. |
Applications
| Battery-Powered Instrumentation | Hand-Held Medical Devices |
|---|---|
|
Use Scenario: Portable multimeter or environmental sensor node powered by two AA alkaline cells (3.0 V nominal, up to 3.2 V fresh). IC Role / Device Role / Timing Role: Primary 5.0 V LDO supplying MCU, ADC, and display driver from a dropping input rail. Use Value: Ultra-low 2.5 µA quiescent current extends battery life beyond 5 years in intermittent-readout mode. |
Use Scenario: Pocket-sized pulse oximeter using CR2032 coin cell (3.0 V) with boost converter feeding NCP698SQ50T1G. IC Role / Device Role / Timing Role: Clean, low-noise 5.0 V source for analog front-end and LED drivers, isolated from boost ripple. Use Value: 100 µVRMS output noise (100 Hz–100 kHz) ensures high SNR in photodiode signal chain. |
| Camcorder Power Management | Industrial Hand Scanner |
|
Use Scenario: Compact camcorder with CMOS image sensor and SD card interface requiring stable 5.0 V under variable load. IC Role / Device Role / Timing Role: Secondary LDO delivering regulated 5.0 V to memory card slot and sensor interface circuitry. Use Value: 20 mV load regulation (10–150 mA) and fast load transient response prevent data corruption during burst writes. |
Use Scenario: Ruggedized barcode scanner operating in warehouses with wide ambient temperature swings (−25 °C to +70 °C). IC Role / Device Role / Timing Role: Main 5.0 V supply for laser diode driver, decode ASIC, and Bluetooth radio subsystem. Use Value: Guaranteed −40 °C to +85 °C operation and 140 mV dropout ensure reliable startup and function even at cold battery voltages. |
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 rating, but higher IQ (1.6 µA typ) and larger SOT-23-3 package (no enable pin). | Lacks enable control; requires external MOSFET for shutdown - increases component count and board space. | Select when enable functionality is unnecessary and higher output current margin is needed. |
| TPS70650DBVR | 5.0 V, 150 mA, 1.5 µA IQ, but requires minimum 1 µF output capacitor and has tighter input range (2.7–6.5 V). | Higher minimum COUT increases cost and footprint; no thermal shutdown - less robust in overload scenarios. | Select when lowest possible IQ is mandatory and thermal protection is handled at system level. |
Compared with NCP698SQ50T1G, MCP1700T-5002E/TT trades enable functionality for higher current and smaller IQ, while TPS70650DBVR offers lower IQ but sacrifices thermal safety and capacitor flexibility - making NCP698SQ50T1G optimal for compact, battery-critical designs needing integrated control and protection.
Availability
NCP698SQ50T1G is available at Aetrix Electronics and suitable for battery-powered instrumentation, hand-held medical devices, camcorders and cameras, and industrial hand scanners requiring stable component supply despite its discontinued status - inventory is secured for legacy design support and long-lifecycle production.
Supply support for NCP698SQ50T1G 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, and sensing solutions for automotive, industrial, and portable electronics.
The NCP698SQ50T1G belongs to onsemi's ultra-low-IQ LDO family, engineered specifically for extended-battery-life portable equipment where standby power, small size, and integration of enable and protection are essential.
FAQ
Is NCP698SQ50T1G still in production?
No - the NCP698SQ50T1G is officially marked as discontinued per onsemi's datasheet revision 3 (February 2025). However, Aetrix Electronics maintains secured legacy inventory and provides full traceable sourcing, allowing continued use in existing designs and production ramps through lifecycle management support.
What is the minimum output capacitor required for stable operation of NCP698SQ50T1G?
The NCP698SQ50T1G requires a minimum 0.1 µF ceramic output capacitor for stability - a key advantage over many competing LDOs that mandate ≥1 µF. This value is verified across all operating conditions in the official datasheet and enables use of ultra-small 0201- or 0402-size MLCCs.
Can NCP698SQ50T1G operate with a 3.3 V input supply?
Yes - the NCP698SQ50T1G supports input voltages as low as 1.8 V (per absolute maximum ratings), but it cannot regulate 5.0 V output below its dropout voltage. At 80 mA load, dropout is 140 mV, so Vin must be ≥5.14 V to sustain regulation; thus, 3.3 V input is insufficient for 5.0 V output.
Does NCP698SQ50T1G include thermal protection?
Yes - the NCP698SQ50T1G integrates internal thermal shutdown circuitry that activates at approximately 160 °C junction temperature. When triggered, the device disables output to prevent damage, and automatically recovers once temperature falls below the hysteresis threshold - a feature confirmed in the Applications Information section of the datasheet.
What is the enable pin behavior when left unconnected on NCP698SQ50T1G?
The enable pin of NCP698SQ50T1G must not be left floating - the datasheet explicitly states that if unused, it shall be connected to Vin to ensure reliable turn-on. An unconnected enable pin may result in unpredictable startup, oscillation, or failure to regulate due to noise coupling or internal leakage paths.
NCP698SQ50T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- 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):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.4V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 6 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- 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-82AB
NCP698SQ50T1G FAQ
1.How can I place an order for NCP698SQ50T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP698SQ50T1G 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 NCP698SQ50T1G reliable?
The price and inventory of NCP698SQ50T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP698SQ50T1G is usually 5 days.
3.What payment methods are accepted for NCP698SQ50T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP698SQ50T1G transactions.
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4.How is shipping managed for NCP698SQ50T1G?
NCP698SQ50T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP698SQ50T1G 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 NCP698SQ50T1G?
For technical support, including NCP698SQ50T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP698SQ50T1G requirements.
6.How does Aetrix verify that NCP698SQ50T1G is sourced from the original manufacturer or authorized distributors?
All NCP698SQ50T1G 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 NCP698SQ50T1G meets industry standards.
7.What is the process for return or replacement of NCP698SQ50T1G?
All NCP698SQ50T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP698SQ50T1G, 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 NCP698SQ50T1G part is unused and in its original packaging.
Return procedure for NCP698SQ50T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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