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onsemi NCP177AMX110TCG
- Part No.:
- NCP177AMX110TCG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP177AMX110TCG.pdf
- Description:
- IC REG LINEAR 1.1V 500MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,693
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Product details
Overview
NCP177AMX110TCG from onsemi is a CMOS low-dropout linear voltage regulator delivering 500 mA output current with fixed 1.10 V output, 1.6 V to 5.5 V input range, and 200 mV typical dropout at 500 mA (for 1.8 V variant; 1.10 V variant specified at 295 mV). It features ±0.8% output accuracy, 60 µA quiescent current, and integrated thermal shutdown and over-current protection. It powers noise-sensitive analog circuitry in portable battery-powered systems.
For engineers reviewing the NCP177AMX110TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its 1.10 V fixed output, XDFN4 1 mm × 1 mm package, active discharge capability (A-version), fast transient response, and compatibility with 1 µF ceramic output capacitors.
Technical Context
The NCP177AMX110TCG uses a PMOS pass transistor architecture enabling low dropout and inherent reverse-current blocking. Its adaptive ground current design maintains 60 µA quiescent current at no load while scaling with output current.
It integrates an enable input (active-high, 1.0 V threshold), internal soft-start, and output discharge transistor (60 Ω typical) activated when EN = 0 V - a distinguishing feature of the "A" variant confirmed for this part number per ordering table and block diagram.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.10 V ±0.8% (guaranteed over −40°C to +85°C) |
| Max Output Current | 500 mA continuous; internally limited to 750 mA typ. during overload |
| Dropout Voltage | 295 mV typ. at 500 mA (for VOUT = 1.10 V, per Electrical Characteristics table) |
| Quiescent Current | 60 µA typ. at IOUT = 0 mA; enables ultra-low-power standby operation |
| PSRR | 75 dB at 1 kHz, supporting clean power for RF/analog circuits |
| Thermal Shutdown | 175°C activation with 20°C hysteresis, ensuring robust fault recovery |
| Stability | Guaranteed with ≥1 µF X7R/X5R ceramic output capacitor (no ESR requirement) |
Pinout & Package
Package: XDFN4 (Case 711AJ), 1.0 mm × 1.0 mm × 0.4 mm, Pb-free, with exposed thermal pad (EPAD) requiring connection to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Regulated output voltage node | Delivers stable 1.10 V; connects directly to load and 1 µF ceramic capacitor |
| 2 - GND | Power supply ground reference | Return path for load, IC bias, and thermal dissipation via EPAD tie |
| 3 - EN | Enable control input (active-high) | Drives ON/OFF state; <0.4 V disables regulator and activates output discharge (A-version) |
| 4 - IN | Input voltage supply node | Accepts 1.6–5.5 V; requires local 1 µF ceramic bypass capacitor |
| EPAD | Exposed thermal pad | Must be soldered to solid PCB ground plane to achieve θJA = 223°C/W and sustain full 500 mA load |
Key Features
| Feature | Design Value |
|---|---|
| Active output discharge | 60 Ω typical discharge path to GND when disabled - prevents floating voltage on powered-down rails |
| Ultra-low quiescent current | 60 µA typ. at zero load enables >1-year battery life in always-on IoT sensors |
| Fast transient response | Stable 1.10 V output under 1 mA ↔ 500 mA load steps without external compensation |
| High PSRR & low noise | 75 dB PSRR @ 1 kHz and 54 µVRMS (10 Hz–100 kHz) support precision ADCs and RF front-ends |
| Robust protection suite | Integrated thermal shutdown (175°C), over-current limit (750 mA typ.), and short-circuit protection |
Applications
| Portable Image Sensors | Wearable Biometric Monitors |
|---|---|
|
Use Scenario: Powering CMOS image sensor analog core and PLL circuitry in compact camera modules. IC Role / Device Role / Timing Role: Low-noise 1.10 V LDO supplying critical analog rail; replaces bulkier solutions requiring external discharge. Use Value: 54 µVRMS output noise and 75 dB PSRR prevent image artifacts; XDFN4 footprint saves board space. |
Use Scenario: Regulating power for optical heart-rate sensor ASICs in fitness bands with coin-cell batteries. IC Role / Device Role / Timing Role: Primary 1.10 V supply with enable-controlled power gating during sleep cycles. Use Value: 60 µA quiescent current extends battery runtime; active discharge ensures rapid rail collapse between measurements. |
| Low-Power MCU Core Rails | Industrial Sensor Signal Chains |
|
Use Scenario: Delivering 1.10 V to ARM Cortex-M0+ core in battery-operated edge nodes. IC Role / Device Role / Timing Role: Fixed-output LDO with EN pin synchronized to MCU wake-up interrupt. Use Value: 295 mV dropout enables operation down to 1.4 V input - maximizes usable battery voltage range. |
Use Scenario: Powering 16-bit precision SAR ADC reference buffers and op-amp front-ends in field transmitters. IC Role / Device Role / Timing Role: Clean, stable 1.10 V reference rail decoupled from noisy digital supplies. Use Value: ±0.8% accuracy and load regulation ≤10 mV ensure measurement repeatability across temperature and load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0511PYKAR | 1.1 V fixed, 200 mA max, 17 µA IQ, no output discharge | Limited to lower current; lacks active discharge for rail sequencing | Choose for ultra-low-IQ sub-200 mA loads where discharge is unnecessary |
| MCP1804T-1102I/OT | 1.1 V fixed, 150 mA max, 3 µA IQ, no discharge, SOT-23-5 | Lower current rating and no discharge; smaller IQ but incompatible pinout | Use only in space-constrained, low-current designs accepting manual discharge or higher dropout |
Compared with TPS7A0511PYKAR and MCP1804T-1102I/OT, the NCP177AMX110TCG uniquely combines 500 mA drive, 1.10 V output, and integrated active discharge in a 1 mm² XDFN4 package - making it optimal for high-density, fast-sequencing portable systems.
Availability
NCP177AMX110TCG is available at Aetrix Electronics and suitable for portable medical devices, battery-powered imaging modules, and industrial sensor nodes requiring stable component supply, long-lifecycle availability, and RoHS-compliant packaging.
Supply support for NCP177AMX110TCG 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 electronics, with leadership in power management, analog, and sensing technologies.
The NCP177AMX110TCG belongs to onsemi's high-performance LDO family designed specifically for noise-sensitive, space-constrained portable applications demanding fast transient response and ultra-low quiescent current.
FAQ
What is the output voltage tolerance of the NCP177AMX110TCG over temperature?
The NCP177AMX110TCG guarantees ±0.8% output voltage accuracy at +25°C and ±1.0% over the full operating range of −40°C to +85°C, as specified in the Electrical Characteristics table under "Output Voltage" for VOUT_NOM < 1.8 V. This tight tolerance ensures reliable operation of precision analog circuitry without external trimming.
Does the NCP177AMX110TCG include output discharge functionality?
Yes, the NCP177AMX110TCG is the "A" version and includes active output discharge: when the EN pin is driven low, an internal 60 Ω (typ.) transistor pulls the OUT pin to GND. This behavior is explicitly confirmed in the Ordering Information table, Pin Function Description, and Internal Block Diagram for NCP177A variants.
What is the minimum input voltage required for the NCP177AMX110TCG to regulate at 1.10 V?
The NCP177AMX110TCG requires a minimum input voltage of 1.6 V, per its Absolute Maximum Ratings and Electrical Characteristics. To maintain regulation at full 500 mA load, VIN must exceed VOUT + VDO = 1.10 V + 0.295 V = 1.395 V - well within the 1.6 V minimum, allowing operation down to ~1.4 V input in practice.
Can the NCP177AMX110TCG operate with a 0.47 µF output capacitor?
No - the NCP177AMX110TCG is specified and guaranteed stable only with ≥1.0 µF ceramic output capacitance (X7R/X5R). The datasheet states "minimum effective capacitance of 0.8 µF", but recommends 1.0 µF for best dynamic performance; using 0.47 µF risks instability, poor load transient response, and potential oscillation.
What thermal derating applies to the NCP177AMX110TCG at 60°C ambient?
At TA = 60°C, the maximum allowable power dissipation for the NCP177AMX110TCG is PDMAX = (125°C − 60°C) / 223°C/W ≈ 0.29 W. For a 1.10 V output at 500 mA, power dissipation is (VIN − 1.10 V) × 0.5 A + IGND × VIN; with VIN = 2.5 V, PD ≈ 0.7 W - exceeding the limit. Thus, either reduce load current, lower VIN, or improve PCB copper area to reduce θJA.
NCP177AMX110TCG 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):
- 1.1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 90 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-XDFN (1x1)
NCP177AMX110TCG FAQ
1.How can I place an order for NCP177AMX110TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP177AMX110TCG 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 NCP177AMX110TCG reliable?
The price and inventory of NCP177AMX110TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP177AMX110TCG is usually 5 days.
3.What payment methods are accepted for NCP177AMX110TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP177AMX110TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP177AMX110TCG?
NCP177AMX110TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP177AMX110TCG 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 NCP177AMX110TCG?
For technical support, including NCP177AMX110TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP177AMX110TCG requirements.
6.How does Aetrix verify that NCP177AMX110TCG is sourced from the original manufacturer or authorized distributors?
All NCP177AMX110TCG 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 NCP177AMX110TCG meets industry standards.
7.What is the process for return or replacement of NCP177AMX110TCG?
All NCP177AMX110TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP177AMX110TCG, 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 NCP177AMX110TCG part is unused and in its original packaging.
Return procedure for NCP177AMX110TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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