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onsemi NCP605MN30T2G
- Part No.:
- NCP605MN30T2G
- Manufacturer:
- onsemi
- Package:
- 6-VDFN Exposed Pad
- Datasheet:
-
NCP605MN30T2G.pdf
- Description:
- IC REG LINEAR 3V 500MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,398
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Product details
Overview
NCP605MN30T2G from onsemi is a fixed-output 3.0 V, 500 mA low-dropout linear regulator with CMOS architecture, no enable pin, and DFN6 3×3.3 mm package. It delivers high PSRR (62 dB at 120 Hz), ultra-low ground current (145 µA typical), and 2% output voltage tolerance over −40°C to +125°C ambient - optimized for portable battery-powered systems requiring stable, low-noise power rails.
For engineers reviewing the NCP605MN30T2G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage (180 mV at 500 mA), thermal shutdown (175°C), ESD robustness (4 kV HBM), compatibility with ceramic output capacitors ≥1 µF, and absence of enable functionality - critical for always-on rail generation in space-constrained designs.
Technical Context
The NCP605MN30T2G employs a PMOS pass transistor architecture enabling low dropout and load-independent ground current. Its internal reference and error amplifier maintain regulation across input voltages from 1.5 V to 6.0 V and output loads up to 675 mA, with built-in short-circuit and thermal protection.
Unlike the NCP606 series, this variant omits an enable pin (Pin 3 is NC), simplifying control logic but requiring external power sequencing management. The SENSE/ADJ pin (Pin 5) is directly connected to the output capacitor for fixed-voltage operation, ensuring accurate feedback without external resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±2% over −40°C to +125°C - ensures stable core/peripheral rail without trimming. |
| Max Output Current | 675 mA current limit - supports peak loads beyond nominal 500 mA rating with foldback protection. |
| Dropout Voltage | 180 mV at 500 mA - enables operation from 3.18 V input, ideal for single-cell Li-ion or 3.3 V bus derating. |
| Ground Current | 145 µA typical (load-independent) - minimizes quiescent power loss in battery standby modes. |
| PSRR | 62 dB at 120 Hz - suppresses switching noise from upstream DC-DC converters feeding the LDO. |
| Noise Voltage | 50 µVRMS (10 Hz–100 kHz) - eliminates need for external bypass capacitor in noise-sensitive analog/RF rails. |
| Thermal Shutdown | 175°C activation with 10°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking. |
Pinout & Package
Package: DFN6 3.0×3.3 mm, 0.95 mm pitch, exposed pad (EPAD) tied to GND per Case 506AX. Compatible with standard reflow profiles for Pb-free assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 6 (Vin) | Positive power supply input | Must be externally shorted to deliver full 675 mA output current; dual inputs reduce trace resistance and improve thermal performance. |
| 2, EPAD (GND) | Power supply ground | Primary thermal and electrical return path; EPAD soldering mandatory for RJA = 75°C/W rating. |
| 3 (NC) | No connect | Not bonded internally - must remain unconnected; incompatible with NCP606 EN pin routing. |
| 4 (Vout) | Regulated output voltage | 3.0 V source for downstream logic/analog circuits; requires ≥1 µF ceramic capacitor placed adjacent to pin. |
| 5 (SENSE/ADJ) | Output voltage sense input | Direct connection to Vout node for fixed-voltage feedback; no resistor divider needed - simplifies layout and improves accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Low IGND independent of load | 145 µA typical - enables predictable battery life estimation in IoT sensors with variable duty cycles. |
| High PSRR at low frequency | 62 dB @ 120 Hz - rejects ripple from AC-DC adapters or buck converter switching artifacts near line frequency. |
| Enhanced ESD protection | 4 kV HBM - withstands handling and board-level ESD events without latch-up or parameter shift. |
| Ceramic capacitor compatible | Stable with ≥1 µF X7R/X5R MLCC - eliminates tantalum cost/size penalties and avoids ESR-related instability. |
| Thermal shutdown with hysteresis | 175°C trip / 165°C recovery - prevents cycling during transient overloads while ensuring safe cooldown. |
Applications
| Hard Disk Drive Power Rail | Notebook System Standby Regulator |
|---|---|
Use Scenario: Supplies 3.0 V to HDD preamplifier ICs and servo controllers during spin-up and seek operations. IC Role / Device Role: Primary low-noise, high-PSRR post-regulator converting 5 V or 3.3 V system bus to clean 3.0 V analog rail. Use Value: 50 µVRMS noise prevents bit-error-rate degradation in high-density magnetic recording channels. |
Use Scenario: Powers real-time clock (RTC), keyboard controller, and lid-open sensor in notebook S3/S5 sleep states. IC Role / Device Role: Always-on LDO delivering regulated 3.0 V from main battery or auxiliary rail with minimal quiescent drain. Use Value: 145 µA ground current extends battery hold-up time beyond 72 hours in deep-sleep mode. |
| Portable Medical Sensor Module | Industrial Handheld Scanner |
Use Scenario: Provides precision 3.0 V bias to low-power ADCs, op-amps, and MEMS transducers in wearable ECG monitors. IC Role / Device Role: Low-drift, low-noise analog supply rail isolated from noisy digital subsystems via PSRR filtering. Use Value: 2% output tolerance and <10 mV load regulation ensure consistent ADC reference scaling across temperature and battery discharge. |
Use Scenario: Powers laser diode driver, image sensor, and Bluetooth SoC in barcode scanners operating from single-cell Li-ion. IC Role / Device Role: Main system LDO supporting burst-mode operation with 675 mA peak current capability during scan initiation. Use Value: 180 mV dropout allows >95% battery utilization down to 3.18 V, extending operational runtime per charge cycle. |
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 rated, 1.6 µA quiescent current, SOT-23-5 package - lower IQ but 40% lower current capacity. | Suitable only for ultra-low-power microcontrollers or RTCs; insufficient for HDD or scanner peak loads. | Select when battery life dominates over peak current; verify thermal margin at 300 mA continuous. |
| LP8345SDX-3.0/NOPB | Same 3.0 V fixed output, 500 mA, but requires minimum 10 µA load for regulation; no thermal shutdown. | Lacks overtemperature protection - unsuitable for enclosed industrial enclosures or high-ambient deployments. | Use only in thermally managed consumer devices with guaranteed light-load conditions; NCP605MN30T2G preferred for robustness. |
Compared with MCP1700T-3002E/MB and LP8345SDX-3.0/NOPB, the NCP605MN30T2G uniquely balances 500 mA delivery, 145 µA ground current, integrated thermal shutdown, and ceramic-capacitor stability - making it the optimal choice for portable systems demanding both performance headroom and reliability under variable thermal and load conditions.
Availability
NCP605MN30T2G is available at Aetrix Electronics and suitable for notebook computers, portable instrumentation, and battery-powered medical devices requiring stable component supply with long-term manufacturability and Pb-free compliance.
Supply support for NCP605MN30T2G 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, and sensor solutions for automotive, industrial, and portable electronics.
The NCP605MN30T2G belongs to onsemi's low-noise, low-IGND LDO family designed specifically for space-constrained, battery-operated applications where thermal efficiency, output accuracy, and ESD resilience are critical.
FAQ
What is the maximum input voltage for the NCP605MN30T2G?
The NCP605MN30T2G supports an absolute maximum input voltage of 6.5 V, but its recommended operating range is 1.5 V to 6.0 V. Operation below 1.5 V or above 6.0 V risks regulation failure or device damage. For reliable 3.0 V output, minimum input must exceed 3.18 V (3.0 V + 180 mV dropout) at 500 mA load.
Does the NCP605MN30T2G require an external enable signal?
No, the NCP605MN30T2G has no enable functionality - Pin 3 is not connected (NC). It operates continuously whenever valid input voltage is applied. This differs from the NCP606 series, which includes an active-high EN pin. Systems requiring controlled power sequencing must manage input voltage externally.
Can the NCP605MN30T2G be used with ceramic output capacitors?
Yes, the NCP605MN30T2G is fully stable with ceramic output capacitors ≥1 µF and does not require minimum ESR. Murata GRM219R71E105K (1 µF, 25 V, X7R) is validated in the datasheet. Ceramic use reduces size, cost, and ESL versus tantalum, improving high-frequency transient response.
What is the thermal resistance and maximum power dissipation of the NCP605MN30T2G?
Mounted on 645 mm² of 1 oz copper FR4, the NCP605MN30T2G has RJA = 75°C/W. At 25°C ambient, it can dissipate up to 1.3 W before reaching 125°C junction limit. With 3.3 V input and 3.0 V/500 mA output, power dissipation is 150 mW - well within safe limits even with minimal copper area.
How does the NCP605MN30T2G handle short-circuit conditions?
The NCP605MN30T2G features internal current limiting (675 mA) and thermal shutdown (175°C). During output short, it enters constant-current mode, then disables if junction temperature exceeds 175°C. Recovery occurs automatically after cooldown to ~165°C due to 10°C hysteresis - preventing latch-up and enabling self-protection without external circuitry.
NCP605MN30T2G 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):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.23V @ 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)
NCP605MN30T2G FAQ
1.How can I place an order for NCP605MN30T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP605MN30T2G 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 NCP605MN30T2G reliable?
The price and inventory of NCP605MN30T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP605MN30T2G is usually 5 days.
3.What payment methods are accepted for NCP605MN30T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP605MN30T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP605MN30T2G?
NCP605MN30T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP605MN30T2G 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 NCP605MN30T2G?
For technical support, including NCP605MN30T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP605MN30T2G requirements.
6.How does Aetrix verify that NCP605MN30T2G is sourced from the original manufacturer or authorized distributors?
All NCP605MN30T2G 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 NCP605MN30T2G meets industry standards.
7.What is the process for return or replacement of NCP605MN30T2G?
All NCP605MN30T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP605MN30T2G, 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 NCP605MN30T2G part is unused and in its original packaging.
Return procedure for NCP605MN30T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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