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onsemi NCP103AMX150TCG
- Part No.:
- NCP103AMX150TCG
- Manufacturer:
- onsemi
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
NCP103AMX150TCG.pdf
- Description:
- IC REG LINEAR 1.5V 150MA 4UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,051
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Product details
Overview
NCP103AMX150TCG from onsemi is a 150 mA CMOS low-dropout (LDO) regulator with fixed 1.5 V output, optimized for space-constrained, noise-sensitive battery-powered systems. It delivers ±1% output accuracy at room temperature, 75 mV typical dropout at 150 mA, and 75 dB PSRR at 1 kHz - enabling stable power for RF and analog circuitry in portable electronics.
For engineers reviewing the NCP103AMX150TCG datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low quiescent current (50 µA typ.), active output discharge function (enabled in "A" variant), stability with 1 µF ceramic output capacitor, and uDFN4 1.0×1.0 mm package compatibility with high-density PCB layouts.
Technical Context
The NCP103AMX150TCG employs a PMOS pass transistor architecture with dynamic quiescent current adjustment, enabling ultra-low IQ across load conditions. Its internal bandgap reference and error amplifier deliver tight regulation under line/load transients while maintaining thermal shutdown and current limit protection.
Unlike standard LDOs, this variant integrates an active output discharge transistor (RDIS = 100 Ω typ.) activated during shutdown, ensuring rapid VOUT decay to GND - critical for sequencing in multi-rail systems and preventing back-powering of downstream circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±1% at +25°C; ensures precise biasing for 1.5 V logic, sensors, or RF front-end stages without external feedback. |
| Max Output Current | 150 mA continuous; supports moderate-power peripherals like Bluetooth baseband ICs or small microcontrollers. |
| Dropout Voltage | 72–120 mV at 150 mA (for VOUT = 1.5 V); enables operation down to VIN = 1.62 V, extending battery runtime in single-cell Li-ion or alkaline systems. |
| Quiescent Current | 50 µA typical at no load; reduces standby power loss in always-on subsystems such as real-time clocks or wake-up controllers. |
| PSRR | 75 dB at 1 kHz; suppresses switching noise from DC-DC converters feeding the LDO input, preserving signal integrity in ADCs and audio codecs. |
| Output Capacitor | Stable with ≥1 µF X5R/X7R ceramic; eliminates need for tantalum or electrolytic capacitors, reducing board area and improving reliability. |
| Enable Threshold | VEN_HI = 0.9 V, VEN_LO = 0.4 V; compatible with 1.8 V GPIOs and provides clean, noise-immune enable control. |
Pinout & Package
Package: uDFN4 1.0 × 1.0 mm, 0.65 mm pitch, exposed pad (Case 517CU). Thermal resistance RJA = 170 °C/W on 1 oz FR-4 with 645 mm² copper area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Regulated output voltage node | Connects to 1 µF ceramic capacitor to GND; minimum 0.22 µF effective capacitance required for stability across temp/DC bias. |
| 2 - GND | Power ground reference | Primary return path for load and quiescent current; exposed pad must be soldered directly to GND plane for thermal and EMI performance. |
| 3 - EN | Active-high enable control | Pull >0.9 V to enable regulation; pull <0.4 V to disable and activate 100 Ω output discharge path to GND. |
| 4 - IN | Input voltage supply | Accepts 1.7–5.5 V; requires local 1 µF ceramic capacitor to suppress high-frequency noise and transient currents. |
Key Features
| Feature | Design Value |
|---|---|
| Active output discharge | 100 Ω discharge path engages during shutdown (A-suffix only), eliminating hold-up voltage and enabling safe power sequencing. |
| Ultra-low IQ optimization | Dynamic quiescent current adjustment reduces IQ to 50 µA at no load and scales with output current - minimizing battery drain in sleep modes. |
| High-PSRR architecture | 75 dB rejection at 1 kHz and strong mid-band suppression (>60 dB up to 100 kHz) isolates sensitive analog loads from noisy DC-DC sources. |
| Robust protection suite | Thermal shutdown (160°C trip, 20°C hysteresis), current limiting (550 mA typ.), and short-circuit immunity ensure fault resilience without external components. |
| Small-footprint stability | Guaranteed stability with 1 µF ceramic output capacitor - avoids large, costly, or unreliable tantalum caps and simplifies layout in 0402/0603 footprints. |
Applications
| Wireless Handset Baseband | Portable Medical Sensor Node |
|---|---|
|
Use Scenario: Powering Bluetooth baseband ICs and RF transceivers in compact handheld devices where input voltage varies from 2.8–4.2 V during battery discharge. IC Role / Device Role / Timing Role: Primary 1.5 V LDO delivering clean, low-noise supply to digital baseband and RF sections; enables fast enable/disable for duty-cycled operation. Use Value: Active discharge prevents back-powering of disabled RF sections; 75 dB PSRR maintains BER performance in presence of switching converter ripple. |
Use Scenario: Supplying ultra-low-power analog front-end (AFE) and microcontroller in wearable ECG or pulse oximetry sensors operating from coin-cell batteries. IC Role / Device Role / Timing Role: Precision 1.5 V rail for ADC reference and op-amp biasing; low IQ extends battery life beyond 12 months in intermittent-sampling mode. Use Value: ±1% accuracy ensures consistent sensor gain calibration; 1 µF ceramic stability allows use of 0402 capacitors to minimize footprint in sub-10 mm² modules. |
| Smartphone Camera Module | Industrial IoT Edge Node |
|
Use Scenario: Providing regulated 1.5 V to image sensor I/O and autofocus drivers in multi-camera smartphone designs with strict EMI and thermal constraints. IC Role / Device Role / Timing Role: Dedicated low-noise LDO for camera interface logic; fast load transient response (<30 mV deviation) maintains timing integrity during burst capture. Use Value: 72–120 mV dropout enables operation even at end-of-life battery voltage (≈3.0 V), sustaining camera functionality until full discharge. |
Use Scenario: Powering LoRaWAN or NB-IoT modem ICs and secure MCU in battery-operated industrial gateways deployed in remote locations. IC Role / Device Role / Timing Role: Always-on 1.5 V supply for real-time clock and wake-up controller; EN pin synchronized with host MCU sleep/wake cycles. Use Value: 0.1 µA shutdown current minimizes annual self-discharge; uDFN4 package supports conformal coating and harsh-environment reflow profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1502E/TT | No active output discharge; higher dropout (175 mV @ 150 mA); 6 µA IQ but no dynamic IQ scaling. | Lacks sequencing support; suitable only for non-sequenced rails where VOUT decay time is not critical. | Select when cost sensitivity outweighs sequencing requirements and input headroom >175 mV is available. |
| Torex XC6206P152MR-G | Fixed 1.5 V, 150 mA, but no EN pin; SOT-23-5 package; 1 µA IQ, no active discharge. | Requires external enable circuitry; larger footprint and lower thermal performance than uDFN4. | Choose only if board redesign is impractical and EN functionality can be implemented externally. |
Compared with MCP1700T-1502E/TT and XC6206P152MR-G, the NCP103AMX150TCG uniquely combines active discharge, dynamic IQ, and uDFN4 thermal efficiency - making it the sole option for space-constrained, sequenced, battery-critical applications requiring guaranteed VOUT collapse on disable.
Availability
NCP103AMX150TCG is available at Aetrix Electronics and suitable for wireless handsets, portable medical sensors, and industrial IoT edge nodes requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for NCP103AMX150TCG 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications.
The NCP103 series was designed specifically for ultra-low-power, noise-sensitive portable electronics - emphasizing minimal IQ, high PSRR, and small-footprint stability to extend battery life without compromising signal integrity.
FAQ
What is the output voltage tolerance of the NCP103AMX150TCG over temperature?
The NCP103AMX150TCG 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 is specified as ±40 mV for VOUT ≤ 2.0 V - which corresponds to ±2.67% for the 1.5 V nominal output. This ensures reliable operation in consumer and industrial ambient conditions without external trimming.
Does the NCP103AMX150TCG require an external resistor network for output voltage setting?
No, the NCP103AMX150TCG is a fixed-output LDO with factory-trimmed 1.5 V regulation. It contains no external feedback pins and does not support adjustable output configurations. The "150" in the part number explicitly denotes the 1.50 V output option, and all electrical characteristics in the datasheet apply directly to this fixed-voltage variant.
How does the active output discharge function operate in the NCP103AMX150TCG?
In the NCP103AMX150TCG, when the EN pin voltage falls below 0.4 V, the internal discharge transistor activates, connecting the OUT pin to GND through a typical 100 Ω path. This discharges the output capacitor rapidly - reducing VOUT to <100 mV within microseconds - preventing back-powering of upstream circuitry and enabling safe power-down sequencing in multi-rail systems.
Can the NCP103AMX150TCG be used with input voltages below 1.7 V?
No - the absolute minimum input voltage for functional regulation is 1.7 V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. Operation below this threshold may result in unregulated output, increased dropout, or failure to enable. For sub-1.7 V applications, alternative regulators with lower VIN minima (e.g., TPS7A05) must be evaluated.
Is the NCP103AMX150TCG compatible with 0402-size ceramic output capacitors?
Yes - the NCP103AMX150TCG is fully stable with 1 µF X5R/X7R ceramic capacitors in 0402 package size. The datasheet confirms stability down to 0.22 µF effective capacitance, accounting for DC bias and temperature derating typical of small-case MLCCs. This enables ultra-compact designs without sacrificing transient response or PSRR performance.
NCP103AMX150TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-UDFN 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):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.235V @ 150mA
- Current - Output:
- 150mA
- 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)
NCP103AMX150TCG FAQ
1.How can I place an order for NCP103AMX150TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP103AMX150TCG 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 NCP103AMX150TCG reliable?
The price and inventory of NCP103AMX150TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP103AMX150TCG is usually 5 days.
3.What payment methods are accepted for NCP103AMX150TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP103AMX150TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP103AMX150TCG?
NCP103AMX150TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP103AMX150TCG 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 NCP103AMX150TCG?
For technical support, including NCP103AMX150TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP103AMX150TCG requirements.
6.How does Aetrix verify that NCP103AMX150TCG is sourced from the original manufacturer or authorized distributors?
All NCP103AMX150TCG 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 NCP103AMX150TCG meets industry standards.
7.What is the process for return or replacement of NCP103AMX150TCG?
All NCP103AMX150TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP103AMX150TCG, 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 NCP103AMX150TCG part is unused and in its original packaging.
Return procedure for NCP103AMX150TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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