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onsemi NCP605MN50T2G
- Part No.:
- NCP605MN50T2G
- Manufacturer:
- onsemi
- Package:
- 6-VDFN Exposed Pad
- Datasheet:
-
NCP605MN50T2G.pdf
- Description:
- IC REG LINEAR 5V 500MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,931
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Product details
Overview
NCP605MN50T2G from onsemi is a fixed-output 5.0 V, 500 mA low-dropout (LDO) linear regulator in DFN6 3×3.3 mm package, featuring 1.5% output voltage tolerance, 170 mV typical dropout at 500 mA, and 50 µVRMS output noise without bypass capacitor - designed for space-constrained portable battery-powered systems including notebook computers and hard disk drivers.
For engineers reviewing the NCP605MN50T2G datasheet, pinout, applications, or equivalent options, key selection considerations include its enable-free architecture, low ground current (145–180 µA), high PSRR (62 dB @ 120 Hz), thermal shutdown (175°C), and compatibility with low-ESR ceramic output capacitors.
Technical Context
The NCP605MN50T2G implements a CMOS-based LDO architecture with internal current limiting (675 mA), thermal shutdown, and an adjustable reference-based error amplifier. It operates across 1.5 V to 6.0 V input range and maintains regulation down to 170 mV dropout at full 500 mA load for the 5.0 V output version.
No enable pin is present - unlike the NCP606 series - making it suitable for always-on power rails where simplicity and minimal external control are prioritized. Its SENSE/ADJ pin is internally connected to VOUT for fixed-voltage operation and requires no external resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±2% over −40°C to +85°C; ensures stable core/peripheral rail for microcontrollers and storage interfaces. |
| Max Output Current | 500 mA continuous; supports moderate-power logic, sensors, and interface ICs in portable designs. |
| Dropout Voltage | 170 mV typical @ 500 mA; enables operation from single-cell Li-ion (3.0 V min) or 5 V bus with margin. |
| Ground Current | 145–180 µA independent of load; minimizes quiescent power loss in battery-critical applications. |
| PSRR | 62 dB @ 120 Hz; suppresses ripple from switching DC/DC stages upstream of the LDO. |
| Output Noise | 50 µVRMS (10 Hz–100 kHz); eliminates need for external noise-reduction capacitor in sensitive analog/audio paths. |
| Thermal Shutdown | 175°C activation with 10°C hysteresis; protects against sustained overload or poor PCB thermal design. |
Pinout & Package
Package: DFN6 3.0×3.3 mm, 0.95 mm pitch, exposed thermal pad (EPAD) connected to GND - optimized for compact layout and thermal performance on 1 oz copper PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 6 Vin | Positive power supply input | Must be externally shorted; dual-input configuration reduces trace resistance and improves current handling. |
| 2 GND | Power supply ground | Primary ground return path; connects to EPAD for enhanced thermal dissipation. |
| 3 NC | No connection | Unbonded pin; must remain floating - not usable as enable or any control signal. |
| 4 Vout | Regulated output voltage | Delivers stable 5.0 V; requires ≥1 µF ceramic capacitor placed adjacent to pin per layout guidelines. |
| 5 SENSE/ADJ | Output voltage sense input | Internally tied to Vout for fixed 5.0 V operation; no external components needed. |
Key Features
| Feature | Design Value |
|---|---|
| Low IGND independent of load | 145–180 µA ensures predictable battery life across sleep-to-active transitions. |
| High PSRR at low frequency | 62 dB @ 120 Hz enables clean 5.0 V rail even when powered from noisy buck converters. |
| Enhanced ESD robustness | 4 kV HBM / 200 V MM rating supports reliable assembly and field operation in handheld devices. |
| Stable with ceramic capacitors | No minimum ESR requirement simplifies BOM and reduces footprint vs. tantalum-based LDOs. |
| Thermal and short-circuit protection | Integrated shutdown prevents damage during fault conditions without external circuitry. |
Applications
| Hard Disk Drive Power Management | Notebook Computer Core Logic Rail |
|---|---|
Use Scenario: Supplies regulated 5.0 V to HDD spindle motor controller and servo electronics in ultra-thin laptops. IC Role / Device Role / Timing Role: Primary post-regulator delivering low-noise, high-PSRR 5.0 V rail downstream of main DC/DC converter. Use Value: 50 µVRMS noise prevents data corruption in high-speed serial ATA interfaces. |
Use Scenario: Powers USB hub controllers, PCIe switch logic, and embedded controller (EC) peripherals. IC Role / Device Role / Timing Role: Fixed-output LDO providing always-on 5.0 V domain independent of system enable sequencing. Use Value: No-enable architecture eliminates control signal routing complexity and startup timing dependencies. |
| Battery-Powered Instrumentation | Portable SSD Controller Supply |
Use Scenario: Powers precision ADC front-end and microcontroller in handheld multimeters and data loggers. IC Role / Device Role / Timing Role: Low-noise, low-quiescent LDO supplying analog and digital sections from single Li-ion cell. Use Value: 170 mV dropout allows >90% battery utilization before brownout, extending runtime. |
Use Scenario: Delivers clean 5.0 V to NAND flash controller and DRAM buffer in M.2 SATA SSD modules. IC Role / Device Role / Timing Role: Secondary regulator decoupling high-current transients from main system rail. Use Value: 675 mA current limit and thermal shutdown protect against NAND programming surge currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP8345M50X | Pin-compatible but requires minimum 10 mA load; higher 250 µA ground current; no thermal shutdown. | Lacks integrated thermal protection and load-independent IGND - unsuitable for unattended battery systems. | Select NCP605MN50T2G when thermal safety, ultra-low quiescent current, or zero-load stability are required. |
| NCP606MN50T2G | Same electrical specs except adds active-high EN pin; 0.1–1 µA disable current; 12–30 µs enable time. | Enables power sequencing and deep-sleep modes; introduces additional control signal and timing constraints. | Choose NCP605MN50T2G for simpler, always-on 5.0 V rails; choose NCP606MN50T2G only if dynamic enable control is mandatory. |
Compared with LP8345M50X, NCP605MN50T2G delivers superior thermal safety and lower quiescent consumption; compared with NCP606MN50T2G, it eliminates enable signal routing and timing validation while retaining identical regulation performance.
Availability
NCP605MN50T2G is available at Aetrix Electronics and suitable for notebook computers, hard disk drivers, and portable instrumentation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP605MN50T2G 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 sensor technologies.
The NCP605MN50T2G belongs to onsemi's NCP605/NCP606 family of low-IGND, low-noise LDO regulators - engineered specifically for portable, battery-powered applications demanding high PSRR, small footprint, and robust thermal behavior.
FAQ
What is the maximum input voltage for the NCP605MN50T2G?
The absolute maximum input voltage for the NCP605MN50T2G is 6.5 V. However, the recommended operating input voltage range is 1.5 V to 6.0 V. Operation below 1.5 V or above 6.0 V risks violating safe operating area limits, especially under load, and may trigger thermal shutdown or cause permanent damage.
Does the NCP605MN50T2G require an external enable signal?
No, the NCP605MN50T2G does not require or support an external enable signal. Pin 3 is marked NC (no connection) and must remain unconnected. This distinguishes it from the NCP606 series, which uses Pin 3 as an active-high enable input. The NCP605MN50T2G powers up automatically whenever valid input voltage is applied.
Can the NCP605MN50T2G be used with ceramic output capacitors?
Yes, the NCP605MN50T2G is fully stable with ceramic output capacitors and imposes no minimum ESR requirement. A minimum 1.0 µF X7R ceramic capacitor (e.g., Murata GRM219R71E105K) placed close to Pins 4 (Vout) and 2 (GND) is recommended to ensure optimal transient response and noise suppression.
What is the dropout voltage of the NCP605MN50T2G at 500 mA load?
The typical dropout voltage of the NCP605MN50T2G at 500 mA load and 5.0 V output is 170 mV, with a maximum of 200 mV over temperature and process variation. This means the device maintains regulation as long as input voltage remains ≥5.17 V under worst-case conditions.
Is the NCP605MN50T2G RoHS-compliant and lead-free?
Yes, the NCP605MN50T2G is a Pb−Free device compliant with RoHS Directive 2011/65/EU. The "G" suffix in the part number explicitly denotes lead-free packaging, and the DFN6 package uses matte tin terminations per onsemi's standard environmental specifications.
NCP605MN50T2G 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):
- 6V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.2V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 180 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (3x3.3)
NCP605MN50T2G FAQ
1.How can I place an order for NCP605MN50T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP605MN50T2G 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 NCP605MN50T2G reliable?
The price and inventory of NCP605MN50T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP605MN50T2G is usually 5 days.
3.What payment methods are accepted for NCP605MN50T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP605MN50T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP605MN50T2G?
NCP605MN50T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP605MN50T2G 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 NCP605MN50T2G?
For technical support, including NCP605MN50T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP605MN50T2G requirements.
6.How does Aetrix verify that NCP605MN50T2G is sourced from the original manufacturer or authorized distributors?
All NCP605MN50T2G 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 NCP605MN50T2G meets industry standards.
7.What is the process for return or replacement of NCP605MN50T2G?
All NCP605MN50T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP605MN50T2G, 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 NCP605MN50T2G part is unused and in its original packaging.
Return procedure for NCP605MN50T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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