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onsemi NCP176AMX300TCG
- Part No.:
- NCP176AMX300TCG
- Manufacturer:
- onsemi
- Package:
- 6-XFDFN Exposed Pad
- Datasheet:
-
NCP176AMX300TCG.pdf
- Description:
- IC REG LINEAR 3V 500MA 6XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,670
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Product details
Overview
NCP176AMX300TCG from onsemi is a CMOS low-dropout (LDO) regulator delivering 500 mA output current with fixed 3.0 V output voltage, 1.4 V to 5.5 V input range, and 130 mV typical dropout at 500 mA. It features ±0.8% output accuracy (VOUT > 1.8 V), 60 µA quiescent current, and integrated thermal shutdown and overcurrent protection - deployed in portable image sensors and battery-powered communication equipment.
For engineers reviewing the NCP176AMX300TCG datasheet, pinout, applications, or equivalent options, key selection criteria include fast transient response, compatibility with 1 µF ceramic output capacitors, enable-controlled power sequencing, output discharge capability (NCP176A variant), and XDFN6 1.2 mm × 1.2 mm package constraints.
Technical Context
The NCP176AMX300TCG uses a PMOS pass transistor architecture enabling ultra-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.
Internal circuitry includes a precision 0.7 V reference, programmable feedback loop for output voltage setting (though this variant is fixed at 3.0 V), soft-start to limit inrush, and logic-level EN pin with 1.0 V turn-on threshold and internal 150 nA pull-down. Thermal shutdown activates at 165°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±0.8% (guaranteed over −40°C to +85°C) |
| Max Output Current | 500 mA continuous; internally current-limited to 750 mA short-circuit peak |
| Dropout Voltage | 130 mV typical at 500 mA (VOUT = 3.0 V), enabling operation down to VIN = 3.13 V |
| Quiescent Current | 60 µA typical at no load; enables long battery life in always-on subsystems |
| PSRR | 75 dB at 1 kHz, critical for noise-sensitive analog/RF supply rails |
| Enable Threshold | VENH = 1.0 V (min), VENL = 0.4 V (max); compatible with 1.8 V/3.3 V logic |
| Thermal Shutdown | 165°C activation with 20°C hysteresis; protects against sustained overload or poor PCB thermal design |
Pinout & Package
Package: XDFN6 (1.2 mm × 1.2 mm × 0.4 mm, Case 711AT), Pb-free, with exposed pad (EPAD) recommended to be connected to GND for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | LDO regulated output | Delivers stable 3.0 V to load; requires 1 µF ceramic capacitor placed adjacent to pin |
| 2 - FB | Feedback input | Internally tied to resistor divider for fixed 3.0 V output; not accessible on this variant |
| 3 - GND | Ground reference | Primary return path for load, bias, and thermal conduction via EPAD |
| 4 - EN | Enable control input | Active-high logic interface; <0.4 V disables regulator and activates output discharge (60 Ω) |
| 5 - N/C | No internal connection | May be tied to GND plane to improve thermal dissipation without electrical impact |
| 6 - IN | Input power supply | Accepts 1.4–5.5 V; requires local 1 µF ceramic capacitor to suppress high-frequency noise |
Key Features
| Feature | Design Value |
|---|---|
| Fast transient response | Stabilizes within microseconds after load steps (e.g., 200 mA → 500 mA), minimizing voltage droop in burst-mode systems |
| Output active discharge | 60 Ω internal discharge path pulls OUT to GND when EN = low - prevents floating voltage during power-down sequencing |
| Ultra-low quiescent current | 60 µA typ. at zero load enables >1-year battery life in coin-cell–powered IoT sensors |
| Small capacitor stability | Stable with ≥0.8 µF ceramic output capacitance (X7R/X5R), reducing BOM count and PCB area vs. traditional LDOs |
| Robust protection suite | Integrated overcurrent, thermal shutdown, and short-circuit protection - eliminates need for external fault management circuitry |
Applications
| Mobile Camera Modules | Wearable Health Sensors |
|---|---|
Use Scenario: Powering CIS (CMOS Image Sensor) and ISP (Image Signal Processor) in smartphone front/rear cameras during burst capture mode. IC Role / Device Role / Timing Role: Primary 3.0 V supply rail regulator with fast line/load transient response to maintain sensor analog core stability amid rapid current surges. Use Value: Prevents image artifacts (e.g., banding, noise spikes) by limiting output deviation to <15 mV during 100 mA → 500 mA transients (tR/tF = 1 µs). |
Use Scenario: Supplying ADC, optical heart-rate monitor (PPG), and BLE SoC in compact fitness trackers with coin-cell or rechargeable Li-ion batteries. IC Role / Device Role / Timing Role: Always-on LDO delivering precise 3.0 V to analog front-end and digital logic, controlled via MCU GPIO through EN pin. Use Value: Enables sub-10 µA system sleep current via EN-driven shutdown and 60 µA IQ in active mode - extending battery runtime beyond 7 days. |
| Portable Medical Ultrasound Probes | Industrial Handheld Scanners |
Use Scenario: Providing clean, low-noise 3.0 V bias to ultrasound transducer driver ICs and receive-path amplifiers in battery-operated handheld probes. IC Role / Device Role / Timing Role: Low-noise voltage source with 48 µVRMS integrated output noise and 75 dB PSRR at 1 kHz - directly powering sensitive analog signal chains. Use Value: Reduces need for additional filtering stages; maintains SNR > 72 dB in 1–10 MHz receive bandwidth without external LDO post-regulation. |
Use Scenario: Regulating 3.0 V for barcode laser diode drivers, CMOS scan engines, and wireless connectivity modules in ruggedized inventory scanners. IC Role / Device Role / Timing Role: Input-flexible LDO supporting wide VIN range (1.4–5.5 V) to accommodate both depleted Li-ion (3.2 V) and USB-powered (5 V) operation modes. Use Value: Eliminates need for dual-rail power architecture; maintains regulation down to 3.13 V input (130 mV dropout), maximizing usable battery capacity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3002E/MB | 300 mA max output, 170 µA IQ, no EN pin, SOT-23-5 package | Lacks enable control and output discharge; unsuitable for sequenced power-down or fast transient loads | Select only for cost-sensitive, low-current (<300 mA), always-on applications where board space permits larger SOT-23 footprint |
| Torex XC6210B302MR-G | 400 mA max output, 25 µA IQ, EN pin, USP-6B package (1.8 × 2.0 mm) | Lower IQ but higher dropout (250 mV @ 400 mA), no output discharge, larger footprint than XDFN6 | Prefer for ultra-low-power standby scenarios where 25 µA IQ outweighs need for 500 mA drive or active discharge |
Compared with MCP1700T-3002E/MB and XC6210B302MR-G, the NCP176AMX300TCG uniquely combines 500 mA drive, 60 µA IQ, EN control, output discharge, and XDFN6 size - making it optimal for space-constrained, battery-powered systems requiring robust sequencing and transient immunity.
Availability
NCP176AMX300TCG is available at Aetrix Electronics and suitable for mobile camera modules, wearable health sensors, and industrial handheld scanners requiring stable component supply, full lifecycle traceability, and consistent parametric performance across production batches.
Supply support for NCP176AMX300TCG 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 innovation for automotive, industrial, cloud, medical, and IoT applications.
The NCP176AMX300TCG belongs to onsemi's high-performance LDO family designed specifically for portable, battery-powered systems demanding ultra-low IQ, fast transient response, and miniature packaging - targeting image sensors, wearables, and edge-node devices.
FAQ
What is the output voltage tolerance of the NCP176AMX300TCG over temperature?
The NCP176AMX300TCG delivers ±0.8% output voltage accuracy over the full operating junction temperature range of −40°C to +85°C. This specification applies specifically to devices with nominal output voltage >1.8 V - which includes the 3.0 V variant - and is guaranteed by design and characterization, not just typical behavior.
Does the NCP176AMX300TCG include output discharge functionality?
Yes, the NCP176AMX300TCG includes output discharge functionality because it is an "A" variant (NCP176A). When the EN pin is driven low, an internal 60 Ω transistor actively discharges the OUT pin to GND, preventing residual voltage hold-up during power-down sequences - a critical feature for reliable system reset and multi-rail sequencing.
What is the minimum input voltage required for the NCP176AMX300TCG to regulate 3.0 V output at full load?
The NCP176AMX300TCG requires a minimum input voltage of 3.13 V to maintain 3.0 V regulation at 500 mA load, based on its typical 130 mV dropout voltage (VDO) at that condition. At lower loads or elevated temperatures, dropout increases slightly - design margin should include worst-case VDO of 190 mV per Table 5.
Can the NCP176AMX300TCG operate with ceramic output capacitors smaller than 1 µF?
Yes - the NCP176AMX300TCG remains stable with a minimum effective output capacitance of 0.8 µF, provided it is a ceramic type (X7R or X5R) with ESR < 0.5 Ω. However, using 1 µF is recommended to ensure optimal load transient response and PSRR performance across temperature and DC bias variations.
How does the enable pin (EN) behave when left unconnected on the NCP176AMX300TCG?
When the EN pin is left unconnected, the NCP176AMX300TCG remains disabled due to an internal 150 nA pull-down current source. This ensures fail-safe default-off behavior, eliminating risk of unintended power-up - a key reliability feature for battery-critical designs where accidental activation must be avoided.
NCP176AMX300TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 6-XFDFN 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):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.165V @ 500ma
- 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-XDFN (1.2x1.2)
NCP176AMX300TCG FAQ
1.How can I place an order for NCP176AMX300TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP176AMX300TCG 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 NCP176AMX300TCG reliable?
The price and inventory of NCP176AMX300TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP176AMX300TCG is usually 5 days.
3.What payment methods are accepted for NCP176AMX300TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP176AMX300TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP176AMX300TCG?
NCP176AMX300TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP176AMX300TCG 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 NCP176AMX300TCG?
For technical support, including NCP176AMX300TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP176AMX300TCG requirements.
6.How does Aetrix verify that NCP176AMX300TCG is sourced from the original manufacturer or authorized distributors?
All NCP176AMX300TCG 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 NCP176AMX300TCG meets industry standards.
7.What is the process for return or replacement of NCP176AMX300TCG?
All NCP176AMX300TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP176AMX300TCG, 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 NCP176AMX300TCG part is unused and in its original packaging.
Return procedure for NCP176AMX300TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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