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onsemi NCP176BMX330TCG
- Part No.:
- NCP176BMX330TCG
- Manufacturer:
- onsemi
- Package:
- 6-XFDFN Exposed Pad
- Datasheet:
-
NCP176BMX330TCG.pdf
- Description:
- IC REG LINEAR 3.3V 500MA 6XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,101
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Product details
Overview
NCP176BMX330TCG from onsemi is a CMOS low-dropout (LDO) regulator delivering 500 mA output current with fixed 3.3 V output, 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 thermal shutdown at 165°C. This device powers noise-sensitive core logic in portable image sensors and battery-powered communication modules.
For engineers reviewing the NCP176BMX330TCG datasheet, pinout, applications, or equivalent options, key selection criteria include fast transient response, compatibility with 1 µF ceramic output capacitors, absence of output discharge function (B-version), and XDFN6 1.2 mm × 1.2 mm package suitability for space-constrained PCB layouts.
Technical Context
The NCP176BMX330TCG uses a PMOS pass transistor architecture enabling ultra-low dropout and reverse-current protection via inherent body diode blocking. Its adaptive ground current design maintains 60 µA quiescent current at no load while supporting full 500 mA output under thermal limits.
Internal circuitry includes a precision 0.7 V reference, soft-start circuitry suppressing inrush current, and independent over-current and thermal shutdown protections triggered at 165°C with 20°C hysteresis. The EN pin provides active-high enable control with 1.0 V threshold and 150 nA internal pull-down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±0.8% (guaranteed over −40°C to +85°C), enabling stable supply for 3.3 V I/O domains and digital baseband circuits. |
| Max Output Current | 500 mA continuous, internally limited to 750 mA short-circuit current - sufficient for powering image sensor interfaces and RF front-end bias rails. |
| Dropout Voltage | 130 mV typical at 500 mA and VOUT = 3.3 V - allows operation from single-cell Li-ion (3.0 V min) or dual-cell alkaline inputs without headroom loss. |
| Quiescent Current | 60 µA typical at no load - minimizes standby power in always-on camera modules and IoT edge nodes. |
| PSRR | 75 dB at 1 kHz - suppresses ripple from noisy switching supplies feeding mixed-signal SoCs and ADCs. |
| Thermal Shutdown | 165°C activation with 20°C hysteresis - protects against sustained overload or poor heatsinking in sealed enclosures. |
| Input Voltage Range | 1.4 V to 5.5 V - supports direct connection to LiFePO₄ (3.2 V), Li-ion (2.7–4.2 V), and regulated 5 V rails. |
Pinout & Package
XDFN6 1.2 mm × 1.2 mm × 0.4 mm package with exposed pad (EPAD); recommended soldered to GND plane for thermal performance. Pin 5 (N/C) may be tied to GND to enhance heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT | LDO output terminal | Delivers regulated 3.3 V; requires 1 µF ceramic capacitor placed adjacent to minimize ESR/ESL impact on transient response. |
| 2: FB | Feedback input | Internally connected to fixed 3.3 V divider; not user-accessible - confirms this is a fixed-output variant (not adjustable). |
| 3: GND | Power ground reference | Return path for load current and internal bias; must connect to low-impedance ground plane shared with CIN/COUT. |
| 4: EN | Enable input (active high) | Logic-level control: ≥1.0 V enables regulation; ≤0.4 V disables output and reduces IN current to 50 nA typ. |
| 5: N/C | Not internally connected | Thermally functional only - tie to GND plane to improve θJA by up to 15°C/W per datasheet Figure 30. |
| 6: IN | Input power supply | Accepts 1.4–5.5 V; requires 1 µF ceramic capacitor near pin to suppress source impedance effects during load transients. |
| EPAD | Exposed thermal pad | Electrically GND; soldering it improves thermal resistance from 123°C/W to ~60°C/W with 2 oz Cu and 200 mm² copper area. |
Key Features
| Feature | Design Value |
|---|---|
| Fast transient response | Sub-20 µs recovery from 50% load step (Figure 28–29); maintains <10 mV droop/surge for image sensor pixel clock stability. |
| Stable with 1 µF ceramic output cap | No ESR requirement; eliminates need for larger tantalum or polymer caps - reduces BOM count and board area in compact modules. |
| Built-in soft start | Controls output ramp rate to limit inrush into downstream capacitance; prevents voltage sag on shared input rails. |
| No output discharge function | NCP176B variant lacks active discharge transistor - avoids unintended discharge of hold-up caps in systems requiring controlled power-down sequencing. |
| Over-current and thermal protection | Independent fault detection shuts down pass element before junction exceeds 150°C or current exceeds safe SOA limits. |
Applications
| Mobile Camera Modules | Wearable Health Sensors |
|---|---|
Use Scenario: Powering CIS (CMOS Image Sensor) analog and digital cores in smartphone rear cameras. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying sensor I/O, PLL bias, and ADC reference rails. Use Value: Low 48 µVRMS noise and 75 dB PSRR prevent spurious patterns in raw image data; 130 mV dropout enables use with aging Li-ion cells. |
Use Scenario: Regulating power for optical heart-rate monitor (PPG) analog front-end and microcontroller in fitness bands. IC Role / Device Role / Timing Role: Low-quiescent LDO delivering clean 3.3 V to precision op-amps and SAR ADCs sampling photodiode signals. Use Value: 60 µA IQ extends battery life beyond 7 days; fast load transient response prevents baseline shift during LED pulse bursts. |
| Portable Two-Way Radios | Industrial Handheld Scanners |
Use Scenario: Supplying RF transceiver ICs and audio codec in ruggedized UHF radios operating from 3.6 V Li-ion packs. IC Role / Device Role / Timing Role: Post-regulator for noise-sensitive RF sections after buck converter stage. Use Value: High PSRR rejects switching noise from upstream DC/DC; thermal shutdown prevents latch-up during extended transmit duty cycles. |
Use Scenario: Powering barcode laser driver, MCU, and display interface in warehouse scanners using replaceable AA batteries. IC Role / Device Role / Timing Role: Main system LDO converting 3.0–4.5 V battery stack to stable 3.3 V for logic and peripherals. Use Value: 1.4 V minimum VIN supports operation down to 1.0 V/cell; XDFN6 footprint fits narrow bezel mechanical constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1826T-3302E/DB | 3.3 V fixed, 500 mA, 250 mV dropout at 500 mA, 90 µA IQ, SOT-23-5 package | Higher dropout limits usable input range; larger SOT-23 footprint increases board area | Select when legacy SOT-23 layout exists and 250 mV dropout is acceptable for 3.6 V nominal input. |
| Torex XC6210B332MR-G | 3.3 V fixed, 500 mA, 160 mV dropout at 500 mA, 25 µA IQ, SOT-25 package | Lower IQ benefits ultra-low-power sleep modes; SOT-25 lacks EPAD, limiting thermal performance above 300 mA | Prefer for battery lifetime-critical designs where peak load is ≤300 mA and thermal margin is adequate. |
Compared with MCP1826T-3302E/DB and XC6210B332MR-G, the NCP176BMX330TCG delivers the lowest dropout (130 mV) and best thermal capability (EPAD-enabled) in the smallest footprint (1.44 mm²), making it optimal for high-current, space-constrained portable imaging and RF applications.
Availability
NCP176BMX330TCG is available at Aetrix Electronics and suitable for mobile camera modules, wearable health sensors, portable two-way radios, and industrial handheld scanners requiring stable component supply across long production lifecycles.
Supply support for NCP176BMX330TCG 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 for automotive, industrial, cloud, and medical applications.
The NCP176 series was designed specifically for portable and battery-powered equipment demanding ultra-low IQ, fast transient response, and small-footprint power management - targeting image sensors, wearables, and wireless edge devices.
FAQ
What is the output voltage tolerance of the NCP176BMX330TCG over temperature?
The NCP176BMX330TCG guarantees ±0.8% output voltage accuracy for VOUT > 1.8 V across −40°C to +85°C ambient temperature. At 25°C, the tolerance tightens to ±0.5% (±16.5 mV on 3.3 V). This stability ensures reliable operation of 3.3 V I/O interfaces in consumer and industrial environments without external trimming.
Does the NCP176BMX330TCG include output discharge functionality?
No, the NCP176BMX330TCG is the "B" version and does not include output discharge. Unlike the NCP176A series, it lacks an internal discharge transistor. When disabled via the EN pin, the output remains floating - critical for systems where downstream capacitance must retain voltage during controlled power-down sequences.
What is the minimum input voltage required for the NCP176BMX330TCG to regulate 3.3 V at 500 mA?
The NCP176BMX330TCG requires a minimum input voltage of 3.43 V to maintain 3.3 V regulation at 500 mA, based on its 130 mV typical dropout voltage (3.3 V + 0.13 V). Under worst-case conditions (max dropout, temperature, process variation), design margin should assume up to 190 mV dropout - requiring ≥3.49 V input.
Can the NCP176BMX330TCG operate with a 0.8 µF output capacitor?
Yes - the NCP176BMX330TCG is specified to remain stable with a minimum effective output capacitance of 0.8 µF (ceramic, X7R/X5R). However, the datasheet recommends 1.0 µF for optimal load transient response and PSRR. Using 0.8 µF may increase output voltage deviation during rapid load steps but will not cause oscillation.
How does the EN pin behavior differ between NCP176A and NCP176B variants?
Both NCP176A and NCP176B share identical EN pin thresholds (VENH = 1.0 V, VENL = 0.4 V) and internal 150 nA pull-down. The functional difference lies solely in discharge behavior: only the NCP176A activates its internal 60 Ω discharge resistor when EN is low. The NCP176BMX330TCG leaves the output floating upon disable, preserving charge on downstream capacitors.
NCP176BMX330TCG 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):
- 3.3V
- 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)
NCP176BMX330TCG FAQ
1.How can I place an order for NCP176BMX330TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP176BMX330TCG 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 NCP176BMX330TCG reliable?
The price and inventory of NCP176BMX330TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP176BMX330TCG is usually 5 days.
3.What payment methods are accepted for NCP176BMX330TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP176BMX330TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP176BMX330TCG?
NCP176BMX330TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP176BMX330TCG 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 NCP176BMX330TCG?
For technical support, including NCP176BMX330TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP176BMX330TCG requirements.
6.How does Aetrix verify that NCP176BMX330TCG is sourced from the original manufacturer or authorized distributors?
All NCP176BMX330TCG 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 NCP176BMX330TCG meets industry standards.
7.What is the process for return or replacement of NCP176BMX330TCG?
All NCP176BMX330TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP176BMX330TCG, 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 NCP176BMX330TCG part is unused and in its original packaging.
Return procedure for NCP176BMX330TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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