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onsemi NCP565MN33T2G
- Part No.:
- NCP565MN33T2G
- Manufacturer:
- onsemi
- Package:
- 6-VDFN Exposed Pad
- Datasheet:
-
NCP565MN33T2G.pdf
- Description:
- IC REG LINEAR 3.3V 1.5A 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,313
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Product details
Overview
NCP565MN33T2G from onsemi is a fixed-output, low-dropout linear regulator delivering 1.5 A at 3.3 V with 0.9 V reference voltage, 0.9 V dropout at full load, and ultra-fast transient response-designed for post-regulation in server power supplies and ASIC core voltage stabilization.
For engineers reviewing the NCP565MN33T2G datasheet, pinout, applications, or equivalent options, key selection criteria include output stability under 1.5 A load transients, thermal performance in DFN6 packages, noise sensitivity in low-noise analog subsystems, and compatibility with ceramic output capacitors down to 1.0 µF.
Technical Context
The NCP565MN33T2G integrates a precision 0.9 V bandgap reference, current-limit sensing (3.3 A typ), and thermal shutdown at 160°C. Its fast loop response enables stable regulation during rapid load steps from 10 mA to 1.5 A within nanoseconds.
It operates over an input range of 4.9 V to 9 V for the 3.3 V output version, supports output capacitor ESR from 50 mΩ to 2.5 Ω, and maintains stability with ceramic, tantalum, or aluminum-electrolytic types-optimized for 150 µF OSCON + 10 µF OSCON parallel networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±2% (−10 to 105°C), ±3% (−40 to 125°C); ensures tight regulation across industrial temperature range |
| Max Output Current | 1.5 A continuous; supports high-current digital loads like FPGA I/O banks and memory interfaces |
| Dropout Voltage | 0.9 V typ at 1.5 A; enables operation with only 4.2 V input for 3.3 V output, minimizing power loss |
| Ground Current | 1.5 mA typ at 1.5 A load; reduces quiescent power consumption in always-on subsystems |
| Output Noise | 28 µVrms (100 Hz–100 kHz); suitable for noise-sensitive analog circuitry adjacent to digital logic |
| Ripple Rejection | 85 dB at 120 Hz; suppresses switching noise from upstream DC/DC converters in hybrid power architectures |
| Thermal Shutdown | 160°C junction threshold; provides fail-safe protection during sustained overload or poor heatsinking |
Pinout & Package
Package: DFN6 (3 mm × 3.3 mm, 0.95 mm height, exposed thermal pad). Pin 1 = VIN, Pin 2 = GND, Pin 3 = VOUT, Pin 4 = GND (exposed pad), Pin 5 = NC, Pin 6 = NC. Thermal pad must be soldered to PCB ground plane for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Positive input supply; requires local 150 µF bypass capacitor mounted with minimal trace length |
| 2 | GND | Power ground return; connects to system ground plane and thermal pad for low-impedance path |
| 3 | VOUT | Regulated 3.3 V output; drives load directly; output capacitor must be placed <2 mm from this pin |
| 4 | Exposed Pad | Thermal ground; mandatory connection to PCB copper pour for RJA = 176°C/W (ambient) or RJP = 37°C/W (pin) |
| 5, 6 | No Connect | Unbonded terminals; must remain unconnected and unpopulated on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast transient response | Sub-400 ns recovery from 10 mA ↔ 1.5 A load steps-critical for burst-mode CPU cores |
| Low-noise architecture | 28 µVrms output noise enables direct powering of ADC references and RF bias rails |
| Stability with low-ESR ceramics | Guaranteed stable with 1.0 µF ceramic output capacitors (50 mΩ–2.5 Ω ESR), reducing BOM count |
| Pb-free DFN6 package | RoHS-compliant 3×3.3 mm footprint with exposed thermal pad-supports automated reflow and high-density layouts |
| Integrated protection | Current limit (3.3 A typ), thermal shutdown (160°C), and short-circuit survival without external components |
Applications
| Server Power Distribution | ASIC Core Voltage Regulation |
|---|---|
Use Scenario: Final-stage regulation for 3.3 V I/O banks in dual-socket x86 servers with dynamic load profiles. IC Role / Device Role / Timing Role: Low-noise, high-current LDO providing clean 3.3 V rail independent of upstream DC/DC ripple. Use Value: Maintains <±2% output accuracy across −40°C to 125°C ambient while rejecting >85 dB of 120 Hz ripple from bulk converters. |
Use Scenario: Post-regulation for FPGA configuration I/O banks requiring fast transient immunity. IC Role / Device Role / Timing Role: Fast-response LDO stabilizing 3.3 V supply during simultaneous I/O switching events. Use Value: Limits output voltage deviation to <±20 mV during 10 mA → 1.5 A load steps, preserving signal integrity. |
| Industrial PLC Backplane | Medical Imaging Sensor Interface |
Use Scenario: Powering isolated CAN transceivers and analog front-end ICs in ruggedized control cabinets. IC Role / Device Role / Timing Role: Primary 3.3 V supply with thermal shutdown and current limiting for fault-tolerant operation. Use Value: Survives sustained short-circuit conditions and recovers automatically after thermal cooldown-no system reset required. |
Use Scenario: Biasing low-noise op-amps and 16-bit SAR ADCs in portable ultrasound probe electronics. IC Role / Device Role / Timing Role: Ultra-low-noise 3.3 V source decoupled from noisy digital subsystems. Use Value: Delivers 28 µVrms noise floor enabling <90 dB SNR in analog signal chains without additional filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-3302E/MB | 3.3 V fixed, 250 mA max output, SOT-23 package, 600 mV dropout at 250 mA | Lower current capacity; suited for sensor nodes or microcontroller peripherals-not for 1.5 A loads | Select only when load current ≤250 mA and board space is constrained by SOT-23 footprint |
| TPS7A4701RGWR | Adjustable (1.4–20.5 V), 1 A max, 310 µVrms noise, WQFN-20 package | Higher precision and lower noise but lower current rating and no fixed 3.3 V variant | Prefer for ultra-low-noise adjustable rails; not drop-in for 3.3 V/1.5 A fixed requirements |
Compared with MCP1703T-3302E/MB and TPS7A4701RGWR, the NCP565MN33T2G uniquely delivers 1.5 A at 3.3 V in a compact DFN6 package with sub-400 ns transient response-making it the only option among the three qualified for high-current, fast-dynamic digital I/O regulation.
Availability
NCP565MN33T2G is available at Aetrix Electronics and suitable for server power distribution, ASIC post-regulation, and industrial PLC backplane designs requiring stable component supply, RoHS compliance, and automotive-grade reliability derivatives (NCV565 variants).
Supply support for NCP565MN33T2G 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 specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, cloud, and medical markets.
The NCP565 series belongs to onsemi's high-performance linear regulator product line, engineered specifically for demanding post-regulation tasks in computing and infrastructure systems where fast transient response and low noise are critical.
FAQ
What is the maximum input voltage for NCP565MN33T2G?
The absolute maximum input voltage for NCP565MN33T2G is 18 V, but its recommended operating input range is 4.9 V to 9 V when regulating 3.3 V output. This ensures proper dropout margin (≥1.6 V above VOUT) and avoids exceeding thermal limits under full 1.5 A load. Exceeding 9 V increases power dissipation and may trigger thermal shutdown.
Does NCP565MN33T2G require an external capacitor on the ADJ pin?
No-NCP565MN33T2G is the fixed 3.3 V output variant and does not feature an ADJ pin. The ADJ pin exists only on adjustable versions (e.g., NCP565MNADJT2G). This part uses internal feedback and requires only input and output capacitors per the datasheet recommendations: ≥150 µF input and ≥1.0 µF output (ceramic, tantalum, or aluminum-electrolytic).
Can NCP565MN33T2G be used with ceramic output capacitors?
Yes-NCP565MN33T2G is explicitly characterized and guaranteed stable with ceramic output capacitors as low as 1.0 µF and ESR between 50 mΩ and 2.5 Ω. The datasheet confirms stability using 150 µF OSCON + 10 µF OSCON combinations, but single 10 µF X5R/X7R ceramics are also validated for most applications when placed within 2 mm of the VOUT pin.
What is the thermal resistance of NCP565MN33T2G in its DFN6 package?
The DFN6 package of NCP565MN33T2G has a junction-to-ambient thermal resistance (RJA) of 176°C/W and junction-to-pad thermal resistance (RJP) of 37°C/W, measured with a 50 mm² copper heat-spreading area and 1 oz copper thickness. Effective thermal performance requires soldering the exposed thermal pad to a dedicated PCB ground plane with ≥4 thermal vias.
Is NCP565MN33T2G pin-compatible with other NCP565 variants in DFN6?
No-NCP565MN33T2G (fixed 3.3 V) and NCP565MNADJT2G (adjustable) share the same DFN6 mechanical footprint but differ electrically: the adjustable version has an ADJ pin (Pin 5), while the fixed version leaves Pins 5 and 6 unconnected. PCB layout must match the specific variant's pin function; mixing footprints without verifying pin mapping risks functional failure.
NCP565MN33T2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 6-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 9V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 1.5A
- Current - Quiescent (Iq):
- 3 mA
- Current - Supply (Max):
- -
- PSRR:
- 85dB ~ 75db (120Hz ~ 1kHz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (3x3.3)
NCP565MN33T2G FAQ
1.How can I place an order for NCP565MN33T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP565MN33T2G 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 NCP565MN33T2G reliable?
The price and inventory of NCP565MN33T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP565MN33T2G is usually 5 days.
3.What payment methods are accepted for NCP565MN33T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP565MN33T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP565MN33T2G?
NCP565MN33T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP565MN33T2G 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 NCP565MN33T2G?
For technical support, including NCP565MN33T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP565MN33T2G requirements.
6.How does Aetrix verify that NCP565MN33T2G is sourced from the original manufacturer or authorized distributors?
All NCP565MN33T2G 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 NCP565MN33T2G meets industry standards.
7.What is the process for return or replacement of NCP565MN33T2G?
All NCP565MN33T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP565MN33T2G, 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 NCP565MN33T2G part is unused and in its original packaging.
Return procedure for NCP565MN33T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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