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onsemi NCP114AMX240TCG
- Part No.:
- NCP114AMX240TCG
- Manufacturer:
- onsemi
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
NCP114AMX240TCG.pdf
- Description:
- IC REG LINEAR 2.4V 300MA 4UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,095
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Product details
Overview
NCP114AMX240TCG from onsemi is a 300 mA CMOS low-dropout linear regulator with fixed 2.4 V output, 135 mV typical dropout at full load, ±1% output accuracy at room temperature, and active output discharge function. It operates from 1.7 V to 5.5 V input and delivers ultra-low quiescent current (50 µA typ.) for battery-powered portable electronics requiring stable, low-noise voltage regulation.
For engineers reviewing the NCP114AMX240TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its UDFN4 package footprint, enable-controlled shutdown with 0.1 µA standby current, 75 dB PSRR at 1 kHz, stability with 1 µF ceramic output capacitor, and thermal shutdown/current limit protection.
Technical Context
The NCP114AMX240TCG integrates a PMOS pass transistor with dynamic quiescent current adjustment, enabling ultra-low IQ across load conditions. Its internal bandgap reference and error amplifier deliver tight output regulation under line/load transients, while the dedicated EN pin controls both regulator enable/disable and activation of the 100 Ω active output discharge path.
This variant belongs to the "A" series, confirming presence of active output discharge - a critical feature for systems requiring rapid VOUT ramp-down during power sequencing. The device is optimized for space-constrained, noise-sensitive applications where input-to-output voltage margin is minimal and supply ripple rejection must exceed 70 dB in the audio and RF front-end bands.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.4 V ±1% at 25°C; ensures precise biasing for 2.4 V–2.5 V logic rails and analog sensors without external feedback. |
| Max Output Current | 300 mA continuous; supports moderate-power subsystems like Bluetooth baseband ICs or camera modules. |
| Dropout Voltage | 135 mV typical at 300 mA (VOUT = 3.3 V); enables operation down to VIN = 2.535 V while maintaining regulation. |
| Quiescent Current | 50 µA typical at no load; extends battery life in always-on monitoring circuits (e.g., wearable health sensors). |
| PSRR | 75 dB at 1 kHz; suppresses switching noise from DC-DC converters feeding the LDO input, critical for ADC reference stability. |
| Output Capacitor | Stable with ≥1 µF X5R/X7R ceramic; eliminates need for tantalum or large electrolytics, reducing board area and cost. |
| Enable Threshold | VEN_HI = 0.9 V, VEN_LO = 0.4 V; compatible with 1.8 V/3.3 V GPIOs without level-shifting. |
Pinout & Package
Package: UDFN4 (1.0 mm × 1.0 mm, 0.65 mm pitch), Pb-free, with exposed thermal pad connected to GND. Optimized for high-density portable PCB layouts and thermal performance on 1 oz copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input voltage supply | Accepts 1.7–5.5 V; requires local 1 µF ceramic decoupling to minimize trace inductance effects during load transients. |
| 2 (GND) | Power ground reference | Common return for IN, OUT, and EN; exposed pad must be soldered directly to GND plane for thermal and EMI control. |
| 3 (EN) | Enable control input | Logic-high (>0.9 V) enables regulation; logic-low (<0.4 V) disables regulator and activates 100 Ω output discharge to GND. |
| 4 (OUT) | Regulated output | Delivers 2.4 V ±1%; requires ≥1 µF ceramic capacitor placed adjacent to pin for stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Active output discharge | 100 Ω internal pull-down activated during shutdown; ensures rapid VOUT decay (<100 µs for 1 µF load), preventing back-powering of downstream circuitry. |
| Ultra-low quiescent current | 50 µA typical at no load; reduces standby power in battery-backed real-time clocks and sensor nodes by >5× vs. legacy LDOs. |
| High PSRR at 1 kHz | 75 dB minimum; maintains clean 2.4 V rail despite ripple from shared buck converter inputs in multi-rail PMIC architectures. |
| Thermal shutdown & current limit | 160°C trip with 20°C hysteresis + 600 mA current limit; protects against sustained overload or poor heatsinking in sealed enclosures. |
| Stability with small ceramic cap | Guaranteed stable with 1 µF X7R/X5R MLCC; avoids costly tantalum capacitors and simplifies layout in 0402-footprint designs. |
Applications
| Smartphone Baseband Power | Wearable Sensor Node |
|---|---|
|
Use Scenario: Supplies 2.4 V to cellular modem baseband IC requiring fast power sequencing and low-noise bias. IC Role / Device Role / Timing Role: Primary post-regulator delivering clean, sequenced 2.4 V rail with active discharge for safe reset isolation. Use Value: Enables <100 µs VOUT ramp-down during modem sleep transitions, eliminating latch-up risk in shared I/O domains. |
Use Scenario: Powers ultra-low-power environmental sensor (e.g., humidity/temperature) in coin-cell–powered fitness tracker. IC Role / Device Role / Timing Role: Always-on LDO providing regulated 2.4 V with 50 µA IQ to extend 200-day battery life. Use Value: Delivers ±1% accuracy over −40°C to +85°C, ensuring sensor ADC reference stability without calibration drift. |
| Bluetooth Audio SoC Core Rail | Medical Pulse Oximeter Analog Front-End |
|
Use Scenario: Supplies 2.4 V core voltage to Bluetooth LE audio SoC during active streaming and deep-sleep modes. IC Role / Device Role / Timing Role: Low-noise, enable-controlled regulator supporting dynamic voltage scaling between 300 mA peak and 0.1 µA standby. Use Value: 75 dB PSRR suppresses switching noise from companion DC-DC, preserving SNR in 24-bit audio DAC output. |
Use Scenario: Provides precision 2.4 V bias to photodiode transimpedance amplifier and LED driver in portable SpO₂ monitor. IC Role / Device Role / Timing Role: Low-drift, low-noise LDO ensuring stable gain and offset in analog signal chain under varying battery voltage. Use Value: 135 mV dropout allows uninterrupted operation down to 2.535 V input, extending usable battery range by 15% vs. higher-VDO alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2402E/MB | 250 mA max output, 170 mV dropout at 250 mA, no active discharge, 2 µA IQ | Lacks active discharge and higher current capability; suited for simpler, lower-power microcontroller rails | Select when ultra-low IQ dominates over discharge requirement and load stays ≤250 mA |
| Torex XC6210B242MR-G | 300 mA, 150 mV dropout at 300 mA, 1 µA IQ, no active discharge, 2% accuracy | Lower IQ but looser accuracy and missing discharge; better for long-life IoT nodes without sequencing needs | Prefer when minimizing standby current is critical and ±2% output tolerance is acceptable |
Compared with MCP1700T-2402E/MB and XC6210B242MR-G, the NCP114AMX240TCG uniquely combines 300 mA drive, ±1% accuracy, and active output discharge in a 1.0×1.0 mm UDFN4 package - making it optimal for compact, sequenced, battery-critical systems where rail collapse timing and noise immunity are non-negotiable.
Availability
NCP114AMX240TCG is available at Aetrix Electronics and suitable for smartphone baseband power, wearable sensor nodes, Bluetooth audio SoC core rails, and medical pulse oximeter analog front-ends requiring stable component supply across high-mix, low-volume production runs.
Supply support for NCP114AMX240TCG 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 focused on energy-efficient technologies for automotive, industrial, cloud, and intelligent power systems.
The NCP114AMX240TCG belongs to onsemi's high-performance LDO family designed specifically for battery-powered portable electronics demanding ultra-low IQ, fast transient response, and robust protection features in sub-1 mm² packages.
FAQ
What is the output voltage tolerance of the NCP114AMX240TCG over temperature?
The NCP114AMX240TCG maintains ±1% output voltage accuracy at room temperature (25°C). Over the full operating junction temperature range (−40°C to +85°C), output voltage deviation remains within ±2% for VOUT ≤ 2.0 V and ±2% for VOUT > 2.0 V - confirmed per Electrical Characteristics table on page 3 of the datasheet. This ensures reliable operation in consumer and medical portable devices exposed to ambient thermal cycling.
Does the NCP114AMX240TCG require an external resistor network to set output voltage?
No, the NCP114AMX240TCG is a fixed-output LDO with factory-trimmed 2.4 V regulation. It contains an internal precision bandgap reference and feedback divider, eliminating the need for external resistors. This simplifies design, improves accuracy, and reduces PCB footprint - especially valuable in space-constrained UDFN4 applications like earbuds and wearables.
How does the active output discharge function operate in the NCP114AMX240TCG?
When the EN pin voltage drops below 0.4 V, the NCP114AMX240TCG disables regulation and activates an internal 100 Ω NMOS discharge path from OUT to GND. This pulls the output voltage to near-zero within microseconds (dependent on output capacitance), preventing back-powering of upstream circuitry and enabling clean system-level power sequencing - a key differentiator versus standard LDOs without this feature.
Can the NCP114AMX240TCG be used with a 1 µF output capacitor only?
Yes, the NCP114AMX240TCG is explicitly characterized and guaranteed stable with a single 1 µF X5R or X7R ceramic capacitor (MLCC) placed adjacent to the OUT pin. Unlike many LDOs requiring 10–22 µF tantalum or specific ESR ranges, this design eliminates capacitor selection complexity and supports miniaturized 0402/0603 footprints - validated in Figure 28 and Applications Information section (page 13).
What thermal derating applies to the NCP114AMX240TCG in a typical 1 oz copper PCB layout?
In a standard 1 oz FR-4 PCB with 645 mm² ground copper area, the NCP114AMX240TCG has a junction-to-ambient thermal resistance (RJA) of 170°C/W. At 85°C ambient and 300 mA load, power dissipation is ~315 mW (PD = (VIN − VOUT) × IOUT), resulting in ~54°C junction rise - well below the 150°C absolute maximum. Derating begins above ~115°C ambient if full load is sustained without additional copper spreading.
NCP114AMX240TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-UDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.4V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 95 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-UDFN (1.0x1.0)
NCP114AMX240TCG FAQ
1.How can I place an order for NCP114AMX240TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP114AMX240TCG 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 NCP114AMX240TCG reliable?
The price and inventory of NCP114AMX240TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP114AMX240TCG is usually 5 days.
3.What payment methods are accepted for NCP114AMX240TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP114AMX240TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP114AMX240TCG?
NCP114AMX240TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP114AMX240TCG 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 NCP114AMX240TCG?
For technical support, including NCP114AMX240TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP114AMX240TCG requirements.
6.How does Aetrix verify that NCP114AMX240TCG is sourced from the original manufacturer or authorized distributors?
All NCP114AMX240TCG 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 NCP114AMX240TCG meets industry standards.
7.What is the process for return or replacement of NCP114AMX240TCG?
All NCP114AMX240TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP114AMX240TCG, 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 NCP114AMX240TCG part is unused and in its original packaging.
Return procedure for NCP114AMX240TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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