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onsemi NCP177BMX110TCG
- Part No.:
- NCP177BMX110TCG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP177BMX110TCG.pdf
- Description:
- IC REG LINEAR 1.1V 500MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,956
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Product details
Overview
NCP177BMX110TCG 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, 200 mV typical dropout at 500 mA (VOUT = 1.8 V), ±0.8% output accuracy, and stable operation with 1 µF ceramic output capacitors. It serves as a precision power supply for noise-sensitive analog and digital circuitry in space-constrained portable electronics.
For engineers reviewing the NCP177BMX110TCG datasheet, pinout, applications, or equivalent options, key selection considerations include its absence of output discharge functionality (NCP177B variant), thermal shutdown at 175°C, 60 µA quiescent current, and XDFN4 1 mm × 1 mm package compatibility with high-density PCB layouts.
Technical Context
The NCP177BMX110TCG employs a PMOS pass transistor architecture enabling ultra-low dropout and reverse-current protection via inherent body diode behavior. Its adaptive ground current design maintains 60 µA quiescent current at no load while scaling with output current, supporting battery longevity in always-on subsystems.
Internal circuitry integrates soft-start, over-current protection, and thermal shutdown with 20°C hysteresis. The EN pin (active-high) provides precise ON/OFF control with 1.0 V threshold and 300 nA internal pull-down, eliminating external biasing when unused - critical for reliable power sequencing in multi-rail systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.10 V ±0.8% (guaranteed over −40°C to +85°C), enabling stable biasing of low-voltage logic and RF front-ends. |
| Max Output Current | 500 mA continuous, with 750 mA typ. current limit protecting against sustained overload without latch-up. |
| Dropout Voltage | 110 mV typ. at 500 mA for VOUT ≥ 3.0 V; 295 mV typ. at 500 mA for 1.4 V ≤ VOUT < 1.8 V - ensures regulation under brown-out conditions. |
| Quiescent Current | 60 µA typ. at no load, minimizing standby power loss in battery-powered devices with extended sleep modes. |
| PSRR | 75 dB at 1 kHz, suppressing ripple from noisy switching supplies feeding sensitive analog signal chains. |
| Thermal Shutdown | 175°C activation with 20°C hysteresis, providing robust fault recovery during transient thermal overload without system reset dependency. |
| Package | XDFN4 (Case 711AJ), 1.0 mm × 1.0 mm × 0.4 mm with exposed pad - supports high thermal dissipation in ultra-compact layouts. |
Pinout & Package
XDFN4 package (Case 711AJ) with 4 I/O terminals and exposed thermal pad (EPAD) requiring connection to PCB ground plane for optimal thermal performance and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT | Regulated output voltage node | Delivers stable 1.10 V to load; requires 1 µF ceramic capacitor placed adjacent to pin for transient stability. |
| 2: GND | Power supply reference and return path | Primary ground reference for regulation loop; must be connected to low-impedance PCB ground plane including EPAD tie-down. |
| 3: EN | Enable control input (active-high) | Drives internal pass transistor; >1.0 V enables regulation, <0.4 V disables output and reduces IN current to 100 nA typ. |
| 4: IN | Input voltage supply node | Accepts 1.6–5.5 V; requires local 1 µF ceramic capacitor to suppress high-frequency noise and source impedance effects. |
| EPAD | Exposed thermal pad | Not electrically active; must be soldered to solid ground copper area to reduce θJA from 223°C/W and prevent thermal throttling. |
Key Features
| Feature | Design Value |
|---|---|
| Fast transient response | Stabilizes within microseconds after load steps (e.g., 500 mA step), maintaining <±50 mV deviation - essential for powering burst-mode processors and image sensors. |
| Low-noise regulation | 54 µVRMS integrated noise (10 Hz–100 kHz) and 75 dB PSRR at 1 kHz enable clean power for ADCs, PLLs, and RF synthesizers without additional filtering. |
| Small-footprint stability | Guaranteed stability with 1 µF X7R/X5R ceramic capacitors - eliminates need for larger, higher-ESR tantalum or electrolytic types, saving board area and cost. |
| Robust protection suite | Integrated over-current, short-circuit, and thermal shutdown with auto-recovery prevents permanent damage during fault events in unattended embedded systems. |
| Ultra-low IQ operation | 60 µA quiescent current at zero load extends battery life in IoT edge nodes requiring multi-year operation on coin cells or energy harvesters. |
Applications
| Mobile Image Sensor Power | Wearable Biometric Front-End |
|---|---|
Use Scenario: Powering CIS (CMOS image sensor) analog core and timing circuitry in smartphone rear cameras during high-speed capture sequences. IC Role / Device Role / Timing Role: Primary LDO supplying 1.10 V to sensor pixel array and column ADC, synchronized to exposure control signals via EN pin. Use Value: Low 54 µVRMS noise prevents fixed-pattern noise in raw image data; fast load transient response avoids frame corruption during LED flash strobes. | Use Scenario: Regulating power to optical heart-rate monitor (PPG) analog front-end in fitness trackers with intermittent sensing duty cycles. IC Role / Device Role / Timing Role: Always-on 1.10 V rail enabling microsecond wake-up of photodiode amplifier and transimpedance stage upon motion detection. Use Value: 60 µA quiescent current minimizes average power during 99% idle time; EN pin allows full shutdown between measurement bursts. |
| Industrial IoT Edge Node Core | Low-Power Bluetooth SoC Supply |
Use Scenario: Providing clean 1.10 V bias to ultra-low-power microcontroller cores and SRAM in battery-operated condition-monitoring sensors. IC Role / Device Role / Timing Role: Main system regulator enabling deep-sleep modes where only RTC and interrupt logic remain active. Use Value: ±0.8% output accuracy ensures consistent MCU clocking and ADC reference across temperature; thermal shutdown protects against enclosure overheating. | Use Scenario: Supplying 1.10 V to Bluetooth LE radio baseband and RF transceiver in hearing aids and medical telemetry devices. IC Role / Device Role / Timing Role: Noise-isolated power domain decoupled from noisy digital logic rails using dedicated LDO per functional block. Use Value: 75 dB PSRR at 1 kHz rejects switching noise from DC-DC converters, preventing RX sensitivity degradation and packet error rate increase. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1804T-1102E/MB | Fixed 1.1 V output, 150 mA max, 250 mV dropout at 150 mA, SOT-23-5 package | Limited to lower current loads; lacks EN pin and thermal shutdown | Select when board space permits larger SOT-23 and load current remains below 150 mA. |
| Torex XC6210B112MR-G | Fixed 1.1 V output, 500 mA max, 180 mV dropout at 500 mA, SOT-25 package | Includes output discharge (NCP177A function), but lacks guaranteed ±0.8% accuracy over full temp range | Choose when active discharge during shutdown is required and accuracy tolerance can be relaxed to ±1.0%. |
Compared with MCP1804T-1102E/MB and XC6210B112MR-G, the NCP177BMX110TCG uniquely combines 500 mA capability, ±0.8% accuracy across −40°C to +85°C, EN control, and thermal protection in a 1 mm² XDFN4 footprint - making it optimal for high-density, thermally constrained, and precision-biased applications.
Availability
NCP177BMX110TCG is available at Aetrix Electronics and suitable for mobile image sensor power, wearable biometric front-ends, and industrial IoT edge node core applications requiring stable component supply, long-term lifecycle support, and Pb-free compliance.
Supply support for NCP177BMX110TCG 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 manufacturer specializing in energy-efficient power management, analog, and sensor solutions for automotive, industrial, and portable electronics.
The NCP177 product line delivers high-performance, low-noise LDO regulators optimized for battery-powered equipment and portable communication devices demanding minimal quiescent current and fast transient response.
FAQ
What is the output voltage tolerance of the NCP177BMX110TCG over temperature?
The NCP177BMX110TCG guarantees ±0.8% output voltage accuracy at TJ = +25°C, and ±1.0% over the full operating junction temperature range of −40°C to +85°C. This tight tolerance ensures consistent performance for precision analog circuits without requiring external trimming or calibration in the NCP177BMX110TCG design.
Does the NCP177BMX110TCG include output discharge functionality?
No, the NCP177BMX110TCG is the "B" variant and does not include output discharge. When disabled via the EN pin, the output floats rather than being actively pulled to ground. This distinguishes it from the NCP177AMX110TCG (A variant), which incorporates a 60 Ω typical discharge path. System designers must account for residual output voltage decay time in NCP177BMX110TCG applications.
What minimum output capacitance is required for stability with the NCP177BMX110TCG?
The NCP177BMX110TCG is stable with a minimum effective output capacitance of 0.8 µF, but the datasheet recommends 1.0 µF ceramic (X7R or X5R) placed adjacent to the OUT and GND pins. Using smaller values or non-ceramic capacitors may degrade load transient response and PSRR, compromising performance in the NCP177BMX110TCG implementation.
How does the thermal shutdown feature operate in the NCP177BMX110TCG?
The NCP177BMX110TCG activates thermal shutdown at 175°C junction temperature and remains latched off until the die cools by 20°C hysteresis (to ~155°C), at which point regulation resumes automatically. This self-recovering protection prevents permanent damage during sustained overload or poor PCB thermal design, ensuring robust operation without external intervention in the NCP177BMX110TCG system.
Can the NCP177BMX110TCG be used with input voltages below 1.6 V?
No - the absolute minimum input voltage for the NCP177BMX110TCG is 1.6 V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. Operation below this threshold risks improper regulation, increased dropout, or complete failure to maintain 1.10 V output. Designers must ensure the input source (e.g., Li-ion cell, DC-DC output) stays above 1.6 V across all operating conditions for reliable NCP177BMX110TCG functionality.
NCP177BMX110TCG 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)
NCP177BMX110TCG FAQ
1.How can I place an order for NCP177BMX110TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP177BMX110TCG 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 NCP177BMX110TCG reliable?
The price and inventory of NCP177BMX110TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP177BMX110TCG is usually 5 days.
3.What payment methods are accepted for NCP177BMX110TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP177BMX110TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP177BMX110TCG?
NCP177BMX110TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP177BMX110TCG 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 NCP177BMX110TCG?
For technical support, including NCP177BMX110TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP177BMX110TCG requirements.
6.How does Aetrix verify that NCP177BMX110TCG is sourced from the original manufacturer or authorized distributors?
All NCP177BMX110TCG 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 NCP177BMX110TCG meets industry standards.
7.What is the process for return or replacement of NCP177BMX110TCG?
All NCP177BMX110TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP177BMX110TCG, 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 NCP177BMX110TCG part is unused and in its original packaging.
Return procedure for NCP177BMX110TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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