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onsemi NCP103AMX270TCG
- Part No.:
- NCP103AMX270TCG
- Manufacturer:
- onsemi
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
NCP103AMX270TCG.pdf
- Description:
- IC REG LINEAR 2.7V 150MA 4UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,555
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Product details
Overview
NCP103AMX270TCG from onsemi is a 150 mA CMOS low-dropout linear regulator with fixed 2.7 V output, active output discharge function, ±1% output voltage accuracy at room temperature, 75 mV typical dropout at 150 mA (VOUT = 2.7 V), and 75 dB PSRR at 1 kHz - designed for noise-sensitive, space-constrained battery-powered applications such as GPS modules and portable medical sensors.
For engineers reviewing the NCP103AMX270TCG datasheet, pinout, applications, or equivalent options, key selection considerations include its uDFN4 1.0 × 1.0 mm package with exposed pad, dynamic quiescent current adjustment (50 µA typ. no-load IQ), EN pin logic thresholds (0.9 V high / 0.4 V low), and guaranteed stability with only 1 µF ceramic output capacitor.
Technical Context
The NCP103AMX270TCG employs a PMOS pass transistor architecture enabling ultra-low dropout and inherent reverse-current blocking. Its internal bandgap reference and error amplifier deliver tight regulation across −40°C to +85°C, while integrated thermal shutdown (160°C trip) and current limiting (550 mA typ.) ensure robust operation under fault conditions.
Active output discharge is enabled only in "A"-suffix variants like NCP103AMX270TCG, using an internal 100 Ω NMOS switch to rapidly pull VOUT to GND when EN < 0.4 V - critical for systems requiring controlled power-down sequencing and preventing back-powering of downstream circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.7 V ±2% over −40°C to +85°C - ensures stable bias for RF front-end ICs and precision analog sensors without external feedback components. |
| Max Output Current | 150 mA continuous - sufficient to power single-core microcontrollers, BLE SoCs, or sensor signal chains in compact wearables. |
| Dropout Voltage | 72 mV typical at 150 mA (VIN ≥ 2.772 V) - enables operation from partially discharged Li-ion cells (down to ~2.8 V) while maintaining regulation. |
| Quiescent Current | 50 µA typical at no load - extends battery life in always-on monitoring devices (e.g., ECG patches) with multi-week standby duration. |
| PSRR | 75 dB at 1 kHz - suppresses switching noise from DC-DC converters feeding the LDO input, preserving signal integrity in ADC reference paths. |
| Stability | Guaranteed with ≥1 µF X5R/X7R ceramic COUT - eliminates need for tantalum or electrolytic capacitors, reducing board area and improving reliability. |
| Enable Threshold | VEN(HI) = 0.9 V min, VEN(LO) = 0.4 V max - compatible with 1.8 V and 3.3 V GPIOs without level-shifting, simplifying host MCU interface. |
Pinout & Package
Package: uDFN4 1.0 × 1.0 mm, 0.65 mm pitch, exposed thermal pad (Case 517CU). Requires solder connection of EPAD to GND plane for thermal performance (RJA = 170°C/W on 1 oz FR4).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Regulated output voltage node | Must connect ≥1 µF ceramic capacitor directly to GND; trace inductance must be minimized to maintain transient response and stability. |
| 2 - GND | Power ground reference | Primary return path for load current and internal bias; connects to EPAD for thermal conduction and low-impedance grounding. |
| 3 - EN | Logic-controlled enable input | Drives internal MOSFET gate; internal 300 nA pull-down ensures default OFF state if left floating - no external resistor required. |
| 4 - IN | Unregulated input supply | Accepts 1.7–5.5 V; requires local 1 µF ceramic decoupling to suppress high-frequency noise and limit inrush during enable transitions. |
| EPAD | Exposed thermal pad | Electrically and thermally connected to GND; must be soldered to ≥645 mm² copper area for rated power dissipation and junction temperature control. |
Key Features
| Feature | Design Value |
|---|---|
| Active output discharge | 100 Ω internal NMOS discharges VOUT to GND in <100 µs upon disable - prevents residual voltage from interfering with system reset or causing latch-up in downstream logic. |
| Dynamic quiescent current | IQ scales with load: 50 µA at 0 mA → 95 µA at 150 mA - minimizes idle power without sacrificing transient response or regulation accuracy. |
| Ultra-low-noise output | 60 µVRMS (10 Hz–100 kHz) at 1.8 V/150 mA - suitable for powering PLLs, RF synthesizers, and high-resolution SAR ADCs without added filtering. |
| Robust protection suite | Thermal shutdown (160°C), current limit (550 mA), and short-circuit immunity - enables reliable operation in unattended portable equipment without external supervision circuitry. |
| Pb-free, RoHS-compliant uDFN | 1.0 × 1.0 mm footprint with 0.65 mm pitch - supports high-density PCB layouts in smartphones, hearing aids, and IoT edge nodes where board space is premium. |
Applications
| GPS Receiver Module | Portable Pulse Oximeter |
|---|---|
Use Scenario: Compact GNSS module operating from single-cell Li-ion with intermittent satellite acquisition bursts. IC Role / Device Role / Timing Role: Supplies clean, regulated 2.7 V to GPS baseband processor and RF front-end, rejecting switching noise from buck converter powering other subsystems. Use Value: 75 dB PSRR at 1 kHz prevents clock jitter in GPS correlators; 72 mV dropout extends usable battery range by >15 minutes per charge cycle. | Use Scenario: Battery-powered wearable measuring SpO₂ via red/IR LED drivers and photodiode amplifier. IC Role / Device Role / Timing Role: Powers analog front-end (AFE) and low-power MCU core, with fast enable/disable for duty-cycled measurement cycles. Use Value: Active output discharge ensures rapid VOUT decay between measurements, eliminating leakage current paths that degrade ADC offset stability. |
| BLE Beacon Node | Industrial Wireless Sensor |
Use Scenario: Coin-cell-powered beacon transmitting periodic advertising packets in cold storage environments (−25°C). IC Role / Device Role / Timing Role: Provides stable 2.7 V to BLE SoC during 10-ms transmit bursts and deep-sleep intervals. Use Value: 50 µA IQ enables >1-year battery life; ±2% output accuracy maintains consistent RF output power across temperature and aging. | Use Scenario: Ruggedized vibration sensor node deployed in factory machinery, powered by energy harvesting + backup capacitor. IC Role / Device Role / Timing Role: Regulates variable harvester output (2.0–4.5 V) to fixed 2.7 V for MEMS accelerometer and ultra-low-power MCU. Use Value: 1.7 V minimum input allows operation down to near-empty storage capacitor; thermal shutdown prevents damage during extended high-temp exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2702E/TT | 250 mA rated, 1.6 µA quiescent current, no active discharge, SOT-23-5 package | Lacks output discharge; higher IQ reduces battery life in always-on apps; larger footprint limits ultra-compact designs | Select when lowest possible IQ dominates over discharge requirement and board space permits SOT-23. |
| Torex XC6206P272MR-G | 150 mA rated, 1 µA IQ, no active discharge, SOT-25 package, 1.6 V min input | No active discharge; lower IQ but inferior PSRR (60 dB @ 1 kHz); not qualified for industrial temp range | Choose for cost-sensitive consumer wearables where discharge is unnecessary and ambient temperature stays <70°C. |
Compared with MCP1700T-2702E/TT and XC6206P2702MR-G, the NCP103AMX270TCG uniquely combines active output discharge, 75 dB PSRR, and uDFN4 footprint - making it optimal for space-constrained, noise-sensitive, and sequenced-power systems where controlled VOUT decay is mandatory.
Availability
NCP103AMX270TCG is available at Aetrix Electronics and suitable for GPS receivers, portable medical monitors, BLE beacons, and industrial wireless sensors requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP103AMX270TCG 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP103 series is part of onsemi's precision analog portfolio, engineered specifically for ultra-low-power, noise-critical portable electronics - emphasizing minimal quiescent current, high PSRR, and miniature packaging without compromising protection or accuracy.
FAQ
What is the maximum input voltage rating for the NCP103AMX270TCG?
The NCP103AMX270TCG has an absolute maximum input voltage of 6 V. Operation above 5.5 V violates the recommended operating condition and risks permanent damage. For reliable long-term use, VIN must remain within 1.7 V to 5.5 V, with derating advised above 85°C ambient.
Does the NCP103AMX270TCG require an external capacitor on the EN pin?
No, the NCP103AMX270TCG does not require an external capacitor on the EN pin. Its EN input features an internal 300 nA pull-down current source, ensuring a defined logic-low state when left unconnected - eliminating external components and simplifying design for GPIO-driven enable control.
How does the active output discharge function operate in the NCP103AMX270TCG?
When the EN pin voltage falls below 0.4 V, the NCP103AMX270TCG activates an internal 100 Ω NMOS transistor between OUT and GND. This discharges the output capacitor rapidly (typically <100 µs for 1 µF), preventing back-powering of upstream circuits and ensuring clean power-down sequencing in multi-rail systems.
Can the NCP103AMX270TCG be used with a 0.22 µF output capacitor?
Yes - the NCP103AMX270TCG is stable with as little as 0.22 µF effective output capacitance, accounting for DC bias and temperature derating of small-case MLCCs (e.g., 0402 X7R). However, 1 µF is recommended for optimal transient response and PSRR across full load and temperature ranges.
What thermal performance can be expected from the NCP103AMX270TCG on a standard PCB?
On a 1 oz FR4 board with 645 mm² copper area connected to the EPAD, the NCP103AMX270TCG achieves RJA = 170°C/W. At 150 mA load and 3.3 V input, power dissipation is ~90 mW, resulting in ~15°C junction-to-ambient rise - well within safe limits for continuous operation up to +85°C ambient.
NCP103AMX270TCG 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):
- 2.7V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- 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)
NCP103AMX270TCG FAQ
1.How can I place an order for NCP103AMX270TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP103AMX270TCG 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 NCP103AMX270TCG reliable?
The price and inventory of NCP103AMX270TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP103AMX270TCG is usually 5 days.
3.What payment methods are accepted for NCP103AMX270TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP103AMX270TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP103AMX270TCG?
NCP103AMX270TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP103AMX270TCG 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 NCP103AMX270TCG?
For technical support, including NCP103AMX270TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP103AMX270TCG requirements.
6.How does Aetrix verify that NCP103AMX270TCG is sourced from the original manufacturer or authorized distributors?
All NCP103AMX270TCG 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 NCP103AMX270TCG meets industry standards.
7.What is the process for return or replacement of NCP103AMX270TCG?
All NCP103AMX270TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP103AMX270TCG, 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 NCP103AMX270TCG part is unused and in its original packaging.
Return procedure for NCP103AMX270TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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