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onsemi NCP103AMX110TCG
- Part No.:
- NCP103AMX110TCG
- Manufacturer:
- onsemi
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
NCP103AMX110TCG.pdf
- Description:
- IC REG LINEAR 1.1V 150MA 4UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,712
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Product details
Overview
NCP103AMX110TCG from onsemi is a 150 mA CMOS low-dropout linear regulator with fixed 1.1 V output, ±1% accuracy at room temperature, 75 mV typical dropout at 150 mA (for VOUT = 3.3 V), and active output discharge function. It operates from 1.7 V to 5.5 V input, consumes only 50 µA typical quiescent current, and stabilizes with a single 1 µF ceramic output capacitor - ideal for space-constrained, noise-sensitive battery-powered systems.
For engineers reviewing the NCP103AMX110TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its 1.1 V fixed output, uDFN4 1.0×1.0 mm package with exposed pad, EN-controlled shutdown with 0.1 µA standby current, thermal shutdown (160°C), and high PSRR (75 dB @ 1 kHz) in portable medical and wireless handset power rails.
Technical Context
The NCP103AMX110TCG integrates a PMOS pass transistor with dynamic quiescent current adjustment, enabling ultra-low IQ across load conditions. Its internal bandgap reference, error amplifier, and MOSFET driver deliver tight regulation under line/load transients while maintaining stability with minimal output capacitance.
It features an active output discharge path (100 Ω resistor to GND when disabled), precise enable threshold (VEN_HI = 0.9 V, VEN_LO = 0.4 V), and full protection suite: current limit (550 mA typ), thermal shutdown (160°C), and short-circuit robustness - all implemented without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.1 V ±1% at +25°C; ensures stable core voltage for low-power microcontrollers and RF ICs without external feedback. |
| Max Output Current | 150 mA continuous; sufficient for powering Bluetooth SoCs, sensor nodes, or MCU peripherals without thermal derating in compact layouts. |
| Dropout Voltage | 75 mV typical at 150 mA (VOUT = 3.3 V); enables operation down to VIN = 1.175 V, critical for single-cell Li-ion or coin-cell applications. |
| Quiescent Current | 50 µA typical at no load; extends battery life in always-on wearable sensors and remote controls. |
| PSRR | 75 dB at 1 kHz; suppresses switching noise from adjacent DC-DC converters, preserving signal integrity in ADCs and RF receivers. |
| Enable Threshold | VEN_HI = 0.9 V, VEN_LO = 0.4 V; compatible with 1.8 V/3.3 V GPIOs and supports clean power sequencing in multi-rail systems. |
| Output Discharge | Active discharge via 100 Ω path when EN < 0.4 V; prevents floating outputs and ensures fast, controlled power-down in safety-critical subsystems. |
Pinout & Package
Package: uDFN4 1.0 × 1.0 mm, 0.65 mm pitch, exposed thermal pad (Case 517CU). Requires soldering of EPAD directly to GND plane for thermal performance (RJA = 170°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Regulated output | Delivers 1.1 V to load; requires ≥1 µF ceramic capacitor to GND for stability and transient response. |
| 2 - GND | Power ground | Reference node for regulation and thermal path; EPAD must be connected to this pin via large copper area. |
| 3 - EN | Enable control input | Logic-level input: >0.9 V enables regulator; <0.4 V disables it and activates output discharge. |
| 4 - IN | Input supply | Accepts 1.7–5.5 V; requires local 1 µF ceramic capacitor to minimize input impedance and suppress ripple. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 50 µA typical at no load - reduces standby power loss by >90% vs. legacy LDOs in battery-backed systems. |
| Stable with 1 µF ceramic output cap | Eliminates need for larger, higher-ESR tantalum capacitors - saves board space and improves reliability in miniaturized designs. |
| Active output discharge | 100 Ω discharge path ensures VOUT falls rapidly to GND on disable - prevents unintended wake-up or latch-up in downstream logic. |
| High PSRR (75 dB @ 1 kHz) | Rejects noise from noisy switchers or shared power rails - essential for precision analog front-ends and RF transceivers. |
| Thermal shutdown with hysteresis | Triggers at 160°C, resets at 140°C - provides self-recovery protection during sustained overload without manual reset. |
Applications
| Wearable Health Monitor | Bluetooth LE Sensor Node |
|---|---|
|
Use Scenario: Powering optical heart-rate sensor and ultra-low-power MCU in a wrist-worn device operating from a 3.0 V coin cell. IC Role / Device Role / Timing Role: Provides clean, regulated 1.1 V supply to MCU core and analog sensor interface, minimizing measurement noise. Use Value: 50 µA quiescent current extends battery life beyond 6 months; 1 µF output cap fits tight 0402 footprint constraints. |
Use Scenario: Supplying 1.1 V to BLE SoC RF section and digital baseband in a compact environmental sensor tag. IC Role / Device Role / Timing Role: Delivers low-noise bias for RF synthesizer and ADC reference, rejecting switching noise from integrated DC-DC converter. Use Value: 75 dB PSRR at 1 kHz ensures <1 µV ripple on VDD_RF, meeting BLE radio sensitivity specs without additional filtering. |
| Portable Medical Glucometer | Smart Remote Control |
|
Use Scenario: Regulating power to electrochemical sensor interface and LCD controller in a handheld diagnostic tool. IC Role / Device Role / Timing Role: Supplies stable 1.1 V to precision op-amps and SAR ADC, ensuring accurate glucose concentration calculation. Use Value: ±1% output accuracy over −40°C to +85°C eliminates calibration drift; active discharge clears residual charge before sensor auto-zero. |
Use Scenario: Powering IR LED driver and sub-GHz transceiver in a voice-activated universal remote with motion wake-up. IC Role / Device Role / Timing Role: Enables fast, sequenced power-up of transceiver and MCU using EN pin, synchronized with wake-up interrupt. Use Value: 0.1 µA shutdown current preserves battery during long idle periods; 90 µs turn-on time meets IR transmission latency requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1102E/TT | No active output discharge; 2.5 µA IQ; 250 mV dropout at 250 mA; SOT-23-5 package. | Lacks discharge function; higher dropout limits use with low-VIN sources; larger footprint than uDFN4. | Select if ultra-low IQ dominates over discharge requirement and board space permits SOT-23. |
| Torex XC6206P112MR-G | 1.1 V fixed; 1 µA IQ; 160 mV dropout at 100 mA; SOT-25 package; no thermal shutdown. | Lower IQ but no overtemperature protection; unsuitable for thermally constrained enclosures or high ambient temps. | Choose only for ultra-long-life coin-cell applications where thermal risk is negligible and size is secondary. |
Compared with MCP1700T-1102E/TT and XC6206P112MR-G, the NCP103AMX110TCG uniquely combines active discharge, 150 mA capability, and thermal shutdown in a 1.0×1.0 mm uDFN - making it the only option for compact, safety-aware, battery-operated systems requiring rapid, controlled power-down.
Availability
NCP103AMX110TCG is available at Aetrix Electronics and suitable for wearable health monitors, Bluetooth LE sensor nodes, portable medical glucometers, and smart remote controls requiring stable component supply and long-term manufacturability.
Supply support for NCP103AMX110TCG 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 NCP103AMX110TCG belongs to onsemi's precision LDO family designed specifically for ultra-low-power, noise-sensitive portable electronics - emphasizing minimal quiescent current, small footprint, and robust protection in battery-constrained environments.
FAQ
What is the output voltage tolerance of the NCP103AMX110TCG over temperature?
The NCP103AMX110TCG 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 applies directly to its 1.1 V output. This ensures reliable operation in consumer and medical environments without external trimming.
Does the NCP103AMX110TCG require an input capacitor?
Yes, the NCP103AMX110TCG requires a minimum 1 µF ceramic (X5R/X7R) capacitor placed close to the IN pin. This capacitor provides low-impedance decoupling for high-frequency noise and limits voltage spikes during load transients. While not strictly required for stability, omitting it degrades PSRR and may cause instability under fast load steps.
How does the active output discharge function work in the NCP103AMX110TCG?
In the NCP103AMX110TCG, when the EN pin voltage drops below 0.4 V, the internal discharge transistor activates, connecting the OUT pin to GND through a 100 Ω resistor. This rapidly discharges the output capacitor, preventing floating voltages that could cause unintended behavior in downstream logic. The function is exclusive to "A" suffix variants like the NCP103AMX110TCG.
Can the NCP103AMX110TCG operate with a 1.5 V input supply?
No - the NCP103AMX110TCG has a minimum input voltage of 1.7 V per its Absolute Maximum Ratings and Electrical Characteristics. At 1.5 V input, the device cannot maintain regulation due to insufficient headroom above the 1.1 V output. For 1.5 V input applications, a different LDO with lower dropout or a buck-boost solution is required.
What is the thermal resistance (RJA) of the NCP103AMX110TCG in its uDFN4 package?
The NCP103AMX110TCG in the uDFN4 1.0×1.0 mm package has a typical junction-to-ambient thermal resistance (RJA) of 170°C/W when mounted on a 1 oz FR-4 PCB with 645 mm² copper area. Performance improves significantly with larger copper pours or 2 oz copper layers - RJA drops to ~120°C/W with 2 oz Cu and 700 mm² spreader area.
NCP103AMX110TCG 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):
- 1.1V
- 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)
NCP103AMX110TCG FAQ
1.How can I place an order for NCP103AMX110TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP103AMX110TCG 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 NCP103AMX110TCG reliable?
The price and inventory of NCP103AMX110TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP103AMX110TCG is usually 5 days.
3.What payment methods are accepted for NCP103AMX110TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP103AMX110TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP103AMX110TCG?
NCP103AMX110TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP103AMX110TCG 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 NCP103AMX110TCG?
For technical support, including NCP103AMX110TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP103AMX110TCG requirements.
6.How does Aetrix verify that NCP103AMX110TCG is sourced from the original manufacturer or authorized distributors?
All NCP103AMX110TCG 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 NCP103AMX110TCG meets industry standards.
7.What is the process for return or replacement of NCP103AMX110TCG?
All NCP103AMX110TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP103AMX110TCG, 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 NCP103AMX110TCG part is unused and in its original packaging.
Return procedure for NCP103AMX110TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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