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onsemi NCP140AMXD330TCG
- Part No.:
- NCP140AMXD330TCG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP140AMXD330TCG.pdf
- Description:
- IC REG LINEAR 3.3V 150MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,891
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Product details
Overview
NCP140AMXD330TCG from onsemi is a 150 mA, capacitor-free, low-noise LDO voltage regulator with fixed 3.3 V output, 125 mV dropout at 150 mA, ±1% accuracy at 25°C, and active output discharge. It operates from 1.6 V to 5.5 V input and targets space-constrained, battery-powered systems requiring ultra-low quiescent current (45 µA typical) and stable regulation without external capacitors.
For engineers reviewing the NCP140AMXD330TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its XDFN4 1.0 mm × 1.0 mm package, enable-controlled shutdown with 0.1 µA standby current, high PSRR (55 dB @ 1 kHz), and guaranteed stability with or without output capacitance in portable power rails.
Technical Context
The NCP140AMXD330TCG implements a PMOS pass transistor architecture enabling ultra-low dropout and inherent reverse-current protection. Its internal bandgap reference, soft-start circuitry, and thermal shutdown (160°C trip, 20°C hysteresis) ensure robust start-up and fault resilience across −40°C to +85°C junction temperature.
Active output discharge-enabled only in "A" variants like NCP140AMXD330TCG-uses an internal 100 Ω pull-down path from OUT to GND during disable, ensuring rapid output voltage decay. The EN pin features a 0.9 V turn-on threshold and 0.4 V turn-off threshold, with 100 nA internal pull-down to guarantee default-off behavior when floating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V, ±1% accuracy at 25°C ensures precise rail generation for 3.3 V logic and I/O interfaces. |
| Max Output Current | 150 mA continuous, with 230 mA current limit protects against overload while sustaining system-level load demands. |
| Dropout Voltage | 125 mV at 150 mA enables operation with minimal VIN–VOUT margin-critical for single-cell Li-ion or coin-cell applications. |
| Quiescent Current | 45 µA typical supports multi-week battery life in always-on sensor nodes and wearable devices. |
| PSRR | 55 dB @ 1 kHz suppresses switching noise from upstream DC-DC converters, preserving analog/RF signal integrity. |
| Enable Threshold | EN high = ≥0.9 V, low = ≤0.4 V provides noise-immune digital control compatible with 1.8 V/3.3 V GPIOs. |
| Thermal Shutdown | 160°C trip with 20°C hysteresis prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
The NCP140AMXD330TCG is housed in an XDFN4 1.0 mm × 1.0 mm × 0.4 mm package (Case 711AJ) with exposed thermal pad requiring direct connection to PCB ground plane for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Regulated output node | Delivers stable 3.3 V; supports optional ceramic capacitor for improved transient response or PSRR. |
| 2 - GND | Power and reference ground | Common return for IN, OUT, and EN; must be connected to large copper pour for thermal dissipation. |
| 3 - EN | Enable control input | Logic-high (>0.9 V) enables regulation; logic-low (<0.4 V) disables regulator and activates output discharge. |
| 4 - IN | Input supply connection | Accepts 1.6–5.5 V; internal PMOS structure blocks reverse current if VOUT > VIN. |
| EPAD | Exposed thermal pad | Must be soldered to GND plane with minimum 4 vias for effective heat removal and RJA = 265°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-free operation | Stable with zero input/output capacitance-eliminates BOM cost, saves board area, and avoids capacitor aging/failure modes. |
| Active output discharge | Internal 100 Ω pull-down discharges OUT to GND within microseconds upon disable-prevents back-powering or latch-up in multi-rail systems. |
| Ultra-low quiescent current | 45 µA typical enables >1-year battery life in 10 µA average-load IoT endpoints using CR2032 cells. |
| High PSRR at low frequency | 62 dB @ 100 Hz and 55 dB @ 1 kHz suppresses ripple from buck converters feeding noisy intermediate rails. |
| Wide input voltage range | 1.6–5.5 V accommodates single-cell Li-ion (2.7–4.2 V), alkaline (0.9–1.5 V × 2), and USB-powered (4.75–5.25 V) designs. |
Applications
| Wearable Health Sensors | Smartphone Camera Modules |
|---|---|
Use Scenario: Compact optical heart-rate monitor powered by CR2032 coin cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying image sensor, ADC, and BLE SoC core logic. Use Value: Capacitor-free operation reduces footprint by >0.5 mm²; 45 µA IQ extends battery life to 18 months at 10-second sampling intervals. | Use Scenario: Dual-camera subsystem in mid-tier smartphone requiring independent, low-noise 3.3 V bias for CMOS image sensors. IC Role / Device Role / Timing Role: Dedicated LDO per sensor to isolate noise-sensitive analog front-end from digital switching transients. Use Value: 55 dB PSRR at 1 kHz prevents switching artifacts from baseband processor from corrupting image data SNR. |
| Industrial Wireless Node | Portable Medical Diagnostic Device |
Use Scenario: LoRaWAN-enabled temperature/humidity sensor deployed in remote locations with AA battery pack. IC Role / Device Role / Timing Role: Main power regulator for MCU, RF transceiver, and environmental sensors during 1-minute wake cycles. Use Value: 125 mV dropout allows full 150 mA delivery down to 3.425 V input-maximizing usable battery capacity from 1.5 V alkaline cells. | Use Scenario: Handheld ECG recorder with real-time display, flash storage, and USB charging-requiring clean 3.3 V for analog front-end and microcontroller. IC Role / Device Role / Timing Role: Post-regulator after buck converter to reject switching noise before sensitive analog signal chain. Use Value: Active output discharge ensures safe, controlled power-down of analog circuits during USB disconnect or low-battery shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCP140AMXC330TCG | XDFN4 0.8 mm × 0.8 mm package (Case 711BF); same electrical specs but smaller footprint and higher thermal resistance (RJA = 252°C/W). | Better suited for ultra-dense layouts where 0.2 mm² area reduction outweighs thermal derating needs. | Select when PCB space is more constrained than thermal margin, and peak load is <120 mA. |
| NCP140BMXD330TCG | Same package and pinout, but lacks active output discharge (no internal 100 Ω pull-down). | Applicable where fast output discharge is unnecessary-e.g., single-rail systems without back-powering risk. | Choose for cost-sensitive designs where discharge function adds no value and BOM simplification is prioritized. |
Compared with NCP140AMXC330TCG, the NCP140AMXD330TCG trades 0.2 mm² area for lower thermal resistance and identical functionality; versus NCP140BMXD330TCG, it adds discharge capability at no layout change-enabling safer multi-rail sequencing without external components.
Availability
NCP140AMXD330TCG is available at Aetrix Electronics and suitable for battery-powered equipment, smartphones/tablets, and portable medical diagnostics requiring stable component supply with long-lifecycle support.
Supply support for NCP140AMXD330TCG 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 delivering energy-efficient, high-performance silicon solutions for automotive, industrial, cloud, and consumer electronics.
The NCP140AMXD330TCG belongs to the NCP140 family of capacitor-free LDOs engineered specifically for ultra-low-power, space-constrained portable applications demanding high accuracy, low noise, and robust enable/control functionality.
FAQ
What is the maximum input voltage rating for the NCP140AMXD330TCG?
The NCP140AMXD330TCG has an absolute maximum input voltage of 6 V. Operation is specified over 1.6 V to 5.5 V; exceeding 6 V risks permanent damage per Absolute Maximum Ratings. For reliable long-term use, maintain VIN ≤ 5.5 V under all conditions including transient spikes.
Does the NCP140AMXD330TCG require external capacitors to operate stably?
No-the NCP140AMXD330TCG is explicitly designed for stable operation with or without input and output capacitors. This capless capability eliminates BOM cost and board area, though adding a 1 µF ceramic capacitor on OUT improves load transient response and PSRR per datasheet Figure 24–25.
What is the purpose of the exposed pad (EPAD) on the NCP140AMXD330TCG package?
The EPAD on the NCP140AMXD330TCG is a thermal interface that must be soldered directly to a PCB ground plane. It reduces thermal resistance (RJA = 265°C/W for Case 711AJ), enabling safe operation at full 150 mA load. Leaving it unconnected or floating degrades thermal performance and risks thermal shutdown.
How does the active output discharge function work in the NCP140AMXD330TCG?
When the EN pin is driven below 0.4 V, the NCP140AMXD330TCG disables regulation and activates an internal 100 Ω pull-down between OUT and GND. This discharges the output node rapidly-critical for preventing back-powering of upstream circuitry or violating reset timing in multi-rail systems.
What is the typical quiescent current of the NCP140AMXD330TCG at no load?
The NCP140AMXD330TCG draws 45 µA typical quiescent current at IOUT = 0 mA and TJ = 25°C. In shutdown (EN ≤ 0.4 V), it drops to 0.1 µA typical-enabling multi-year battery life in infrequently active IoT edge nodes.
NCP140AMXD330TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-XDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.22V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 75 µA
- Current - Supply (Max):
- -
- PSRR:
- 62dB ~ 55dB (100Hz ~ 1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Temperature
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-XDFN (1x1)
NCP140AMXD330TCG FAQ
1.How can I place an order for NCP140AMXD330TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP140AMXD330TCG 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 NCP140AMXD330TCG reliable?
The price and inventory of NCP140AMXD330TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP140AMXD330TCG is usually 5 days.
3.What payment methods are accepted for NCP140AMXD330TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP140AMXD330TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP140AMXD330TCG?
NCP140AMXD330TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP140AMXD330TCG 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 NCP140AMXD330TCG?
For technical support, including NCP140AMXD330TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP140AMXD330TCG requirements.
6.How does Aetrix verify that NCP140AMXD330TCG is sourced from the original manufacturer or authorized distributors?
All NCP140AMXD330TCG 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 NCP140AMXD330TCG meets industry standards.
7.What is the process for return or replacement of NCP140AMXD330TCG?
All NCP140AMXD330TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP140AMXD330TCG, 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 NCP140AMXD330TCG part is unused and in its original packaging.
Return procedure for NCP140AMXD330TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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