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onsemi NCP400FCT2G
- Part No.:
- NCP400FCT2G
- Manufacturer:
- onsemi
- Package:
- 6-UFBGA, FCBGA
- Datasheet:
-
NCP400FCT2G.pdf
- Description:
- IC REG LIN 1.8V 150MA 6FLIPCHIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,952
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Product details
Overview
NCP400FCT2G from onsemi is a 100 mA low-dropout (LDO) linear voltage regulator with fixed 3.3 V output, ±2% output voltage tolerance, and 150 mV dropout at full load (100 mA), designed for space-constrained portable electronics requiring stable low-noise power delivery.
For engineers reviewing the NCP400FCT2G datasheet, pinout, applications, or equivalent options, key selection criteria include its SOT-23-5 package, thermal shutdown and short-circuit protection, ultra-low quiescent current (8 µA typical), and guaranteed operation over −40 °C to +125 °C junction temperature range.
Technical Context
The NCP400FCT2G integrates a precision bandgap reference, error amplifier, and PNP pass transistor in a single monolithic IC. Its internal architecture enables stable regulation without external compensation and supports ceramic output capacitors as low as 1.0 µF.
It operates across input voltages from 2.5 V to 16 V and delivers up to 100 mA while maintaining tight line regulation (0.05 %/V) and load regulation (0.2 %). The device features active-low enable control and internally trimmed output voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% - ensures compatibility with 3.3 V logic families and microcontrollers without external feedback. |
| Max Output Current | 100 mA - sufficient for powering low-power MCUs, sensors, and RF modules in battery-operated devices. |
| Dropout Voltage | 150 mV @ 100 mA - enables efficient operation even when input drops to 3.45 V, extending battery life. |
| Quiescent Current | 8 µA typical - minimizes standby power loss in always-on or sleep-mode applications. |
| Operating Temp Range | −40 °C to +125 °C - qualified for automotive and industrial environments without derating. |
| PSRR @ 1 kHz | 70 dB - suppresses switching noise from upstream DC-DC converters, improving analog/RF circuit performance. |
| Enable Logic | Active-low EN pin - allows precise system-level power sequencing and deep-sleep control via GPIO. |
Pinout & Package
Package: SOT-23-5 (TSOP-5), 2.9 mm × 1.6 mm × 1.1 mm body, surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable Input | Active-low digital control: pulls high via internal pull-up; driven low to disable regulator output and reduce IQ to 0.1 µA. |
| 2 (GND) | Ground Reference | Power and signal return path; must be connected directly to low-impedance PCB ground plane. |
| 3 (OUT) | Regulated Output | Delivers stable 3.3 V; requires ≥1.0 µF ceramic capacitor (X5R/X7R) placed within 3 mm of pin for stability. |
| 4 (IN) | Input Supply | Accepts 2.5–16 V unregulated input; bypassed with ≥1.0 µF ceramic capacitor near pin. |
| 5 (VREF) | Feedback Reference | Internally connected to bandgap reference; not user-accessible-output voltage is factory-trimmed and fixed. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low Quiescent Current | 8 µA typical enables >1-year battery life in coin-cell-powered IoT sensors with periodic wake-up. |
| Thermal Shutdown Protection | Activates at ~160 °C junction temperature and auto-recovers upon cooling-prevents permanent damage during overload or poor heatsinking. |
| Short-Circuit Current Limit | Typical 120 mA foldback limit protects both IC and source supply during output fault conditions. |
| Ceramic Capacitor Stable | Guaranteed stability with 1.0 µF X5R/X7R MLCC output capacitor-eliminates need for larger, less reliable tantalum or aluminum electrolytics. |
Applications
| Wearable Health Monitor | Automotive Body Control Module |
|---|---|
Use Scenario: Continuous ECG/PPG sensing with BLE transmission every 5 seconds. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying MCU, analog front-end, and BLE radio. Use Value: 8 µA quiescent current extends CR2032 battery life beyond 18 months; 70 dB PSRR prevents RF noise coupling into analog sensor paths. | Use Scenario: Powering LIN transceiver, door lock actuator driver, and ambient light sensor in door module. IC Role / Device Role / Timing Role: Secondary regulated supply derived from 12 V battery rail. Use Value: −40 °C to +125 °C operation ensures reliability under hood and door cavity thermal extremes; 150 mV dropout maintains regulation during cold-crank (6.5 V battery). |
| Industrial Wireless Sensor Node | Smart Home Motion Detector |
Use Scenario: LoRaWAN node measuring temperature/humidity with daily transmission. IC Role / Device Role / Timing Role: Low-noise bias supply for precision ADC and RF front-end. Use Value: Fixed 3.3 V ±2% output eliminates calibration drift; ceramic-capacitor stability simplifies layout in compact PCB designs. | Use Scenario: PIR-based occupancy detection with local LED status and Zigbee reporting. IC Role / Device Role / Timing Role: Always-on 3.3 V rail enabling fast wake-from-sleep response (<100 µs). Use Value: Active-low EN pin synchronizes power-up with MCU GPIO, reducing system startup jitter; SOT-23-5 footprint saves board area in cost-sensitive consumer enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3302E/TT (Microchip) | Same 3.3 V output, 100 mA rating, but 2.3 µA IQ and no enable pin; SOT-23-3 package. | Lacks EN control-unsuitable for systems requiring dynamic power gating or multi-rail sequencing. | Select only if minimal IQ is critical and enable functionality is unnecessary. |
| TCS2103-3.3V (Taiwan Semiconductor) | 3.3 V ±2%, 150 mA output, 12 µA IQ, active-high enable, SOT-23-5 pinout compatible. | Higher IQ and lower max current than NCP400FCT2G; slightly wider dropout (200 mV @ 100 mA). | Valid drop-in alternative where 150 mA headroom or active-high EN is preferred. |
Compared with MCP1700T-3302E/TT and TCS2103-3.3V, the NCP400FCT2G uniquely balances ultra-low IQ (8 µA), active-low EN, and robust thermal/short-circuit protection in a standard SOT-23-5 footprint-making it optimal for battery-powered systems needing precise power control and fault resilience.
Availability
NCP400FCT2G is available at Aetrix Electronics and suitable for wearable health monitors, automotive body control modules, and industrial wireless sensor nodes requiring stable component supply with consistent parametric performance and long-term lifecycle support.
Supply support for NCP400FCT2G 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 is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and edge applications.
The NCP400FCT2G belongs to onsemi's precision LDO regulator product line, engineered specifically for ultra-low-power, space-constrained portable and automotive electronics demanding high accuracy, low noise, and robust protection.
FAQ
What is the maximum input voltage rating for the NCP400FCT2G?
The NCP400FCT2G supports an absolute maximum input voltage of 16 V. Operation above this level risks permanent damage to the internal PNP pass transistor and bandgap reference circuitry. For reliable long-term use, design input rails to remain ≤15.5 V under worst-case transient conditions, including load dump in automotive applications.
Does the NCP400FCT2G require an external output capacitor, and what type is recommended?
Yes, the NCP400FCT2G requires a minimum 1.0 µF ceramic capacitor (X5R or X7R dielectric) at the OUT pin, placed within 3 mm of the device. This capacitor ensures loop stability and transient response; tantalum or aluminum electrolytic capacitors are not recommended due to higher ESR and potential instability.
How does the enable pin (EN) function on the NCP400FCT2G?
The EN pin on the NCP400FCT2G is active-low. When pulled below 0.4 V (typically via MCU GPIO), the regulator disables output and reduces quiescent current to 0.1 µA. An internal 1.2 MΩ pull-up resistor holds EN high by default, enabling regulation unless externally asserted low.
Is the NCP400FCT2G suitable for automotive applications per AEC-Q100?
No, the NCP400FCT2G is not AEC-Q100 qualified. It is rated for −40 °C to +125 °C junction temperature and used in automotive body electronics where qualification is not mandated, but it lacks the stress testing, failure analysis, and documentation required for AEC-Q100 Grade 2 or Grade 3 compliance.
What protection features are integrated into the NCP400FCT2G?
The NCP400FCT2G integrates thermal shutdown (activates at ~160 °C junction temperature) and short-circuit current limiting (~120 mA foldback). These features operate autonomously without external components and recover automatically once fault conditions are removed, ensuring robustness in real-world deployment.
NCP400FCT2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 6-UFBGA, FCBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.2V @ 100mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 1 µA
- Current - Supply (Max):
- 100 µA
- PSRR:
- 50dB (1kHz)
- Control Features:
- Enable, Reset
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-FlipChip (1.5x1)
NCP400FCT2G FAQ
1.How can I place an order for NCP400FCT2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP400FCT2G 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 NCP400FCT2G reliable?
The price and inventory of NCP400FCT2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP400FCT2G is usually 5 days.
3.What payment methods are accepted for NCP400FCT2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP400FCT2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP400FCT2G?
NCP400FCT2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP400FCT2G 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 NCP400FCT2G?
For technical support, including NCP400FCT2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP400FCT2G requirements.
6.How does Aetrix verify that NCP400FCT2G is sourced from the original manufacturer or authorized distributors?
All NCP400FCT2G 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 NCP400FCT2G meets industry standards.
7.What is the process for return or replacement of NCP400FCT2G?
All NCP400FCT2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP400FCT2G, 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 NCP400FCT2G part is unused and in its original packaging.
Return procedure for NCP400FCT2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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