My Inquiry
My Account
onsemi NCP605MN18T2G
- Part No.:
- NCP605MN18T2G
- Manufacturer:
- onsemi
- Package:
- 6-VDFN Exposed Pad
- Datasheet:
-
NCP605MN18T2G.pdf
- Description:
- IC REG LINEAR 1.8V 500MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,388
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCP605MN18T2G from onsemi is a fixed-output 1.8 V, 500 mA low-dropout (LDO) linear regulator in DFN6 3×3.3 mm package, featuring 1.5% output voltage tolerance, 250 mV typical dropout at 500 mA, and 50 µVRMS output noise without bypass capacitor - designed for powering core logic and I/O rails in space-constrained portable electronics.
For engineers reviewing the NCP605MN18T2G datasheet, pinout, applications, or equivalent options, key selection criteria include its enable-free architecture, ultra-low ground current (145–180 µA), high PSRR (62 dB @ 120 Hz), thermal shutdown (175°C), and compatibility with low-ESR ceramic capacitors for battery-powered systems requiring stable 1.8 V supply.
Technical Context
The NCP605MN18T2G uses a CMOS-based pass transistor architecture with internal current limiting (675 mA) and thermal shutdown circuitry. It operates across an input range of 1.5 V to 6.0 V and maintains regulation down to 250 mV dropout at full 500 mA load for the 1.8 V output variant.
No enable pin is present - Pin 3 is NC - distinguishing it from the NCP606 series. Its SENSE/ADJ pin (Pin 5) connects directly to the output capacitor for fixed-voltage operation, enabling precise feedback without external resistors while supporting high PSRR and low-noise performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2% over −40°C to +85°C; ensures stable core voltage for 1.8 V logic interfaces and memory I/O. |
| Max Output Current | 500 mA continuous; supports moderate-power microcontrollers, sensors, and interface ICs in portable designs. |
| Dropout Voltage | 250 mV typical at 500 mA; enables operation from single-cell Li-ion (3.0 V min) or 2.5 V system rails with margin. |
| Ground Current | 145–180 µA independent of load; minimizes quiescent power loss in always-on battery applications. |
| PSRR | 62 dB @ 120 Hz; suppresses ripple from noisy switching supplies feeding the LDO input. |
| Output Noise | 50 µVRMS (10 Hz–100 kHz); eliminates need for external noise-reduction capacitors in sensitive analog/RF subsystems. |
| 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 pad (EPAD) connected to GND (Case 506AX). RoHS-compliant, Pb-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 6 | Vin | Input power supply connection; both pins must be externally tied together to support full 500 mA output current. |
| 2 | GND | Power ground reference; connects to EPAD for optimal thermal and electrical performance. |
| 3 | NC | No connect - not internally bonded; must remain unconnected on PCB. |
| 4 | Vout | Regulated 1.8 V output; requires ≥1 µF ceramic capacitor placed adjacent to pin for stability and transient response. |
| 5 | SENSE/ADJ | Voltage sense input; shorted to Vout for fixed 1.8 V operation - enables accurate feedback without external dividers. |
Key Features
| Feature | Design Value |
|---|---|
| Low IGND independent of load | 145–180 µA ensures predictable battery runtime in standby and active modes. |
| High PSRR at low frequency | 62 dB @ 120 Hz rejects ripple from DC-DC converters or shared power rails. |
| Ultra-low noise without bypass cap | 50 µVRMS simplifies layout and reduces BOM count for noise-sensitive analog circuits. |
| Robust ESD protection | 4 kV HBM / 200 V MM rating enhances reliability during handling and system integration. |
| Thermal and short-circuit protection | Integrated shutdown at 175°C and 675 mA current limit prevent damage under fault conditions. |
Applications
| Mobile SSD Controllers | Notebook Platform I/O Rails |
|---|---|
Use Scenario: Powering NAND flash interface and controller logic in ultra-thin SSD modules where board area and thermal headroom are constrained. IC Role / Device Role / Timing Role: Primary 1.8 V LDO supplying core logic and I/O buffers; replaces discrete regulators with higher quiescent current. Use Value: 250 mV dropout enables use of 2.5 V intermediate rail; 50 µVRMS noise prevents bit errors during high-speed data transfer. |
Use Scenario: Delivering clean 1.8 V to USB 3.x PHY, PCIe Gen3 retimers, and eMMC controllers in fanless notebook designs. IC Role / Device Role / Timing Role: Fixed-output LDO decoupling switching supply noise before high-speed serial interfaces. Use Value: 62 dB PSRR at 120 Hz suppresses switching artifacts from buck converters; DFN6 footprint saves space vs. SOIC-8 alternatives. |
| Portable Medical Sensors | Industrial Handheld Terminals |
Use Scenario: Supplying precision ADCs, low-power MCUs, and wireless transceivers in battery-operated glucose meters and pulse oximeters. IC Role / Device Role / Timing Role: Low-noise, low-IQ voltage source for analog front-end and digital subsystems sharing a single Li-ion cell. Use Value: 145–180 µA ground current extends battery life beyond 72 hours in sleep mode; no enable pin simplifies control logic. |
Use Scenario: Regulating 1.8 V for FPGA configuration banks, display drivers, and barcode scanner ASICs in ruggedized handheld terminals. IC Role / Device Role / Timing Role: Main LDO for mixed-signal domains requiring stable voltage despite wide ambient temperature swings (−40°C to +85°C). Use Value: ±2% output tolerance and 175°C thermal shutdown ensure reliability in unventilated enclosures; DFN6 withstands mechanical shock. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1802E/TT | 300 mA max output, 6 µA IQ, 600 mV dropout at 250 mA; SOT-23-5 package. | Limited to lower-current peripherals; unsuitable for 500 mA loads like SSD controllers. | Choose for ultra-low-power sensor nodes where 300 mA suffices and IQ is critical. |
| TPS7A0518PDBVR | 200 mA max, 25 nA IQ, 170 mV dropout at 100 mA; 2-mm × 2-mm WSON. | Insufficient current capacity and smaller thermal mass; not rated for continuous 500 mA. | Select only for sub-200 mA applications prioritizing nanoscale quiescent current over output capability. |
Compared with MCP1700T-1802E/TT and TPS7A0518PDBVR, the NCP605MN18T2G uniquely delivers 500 mA at 250 mV dropout in a thermally robust DFN6 package while maintaining 50 µVRMS noise - making it the only viable option among the three for high-current, low-noise 1.8 V rail generation.
Availability
NCP605MN18T2G is available at Aetrix Electronics and suitable for mobile SSD controllers, notebook platform I/O rails, portable medical sensors, and industrial handheld terminals requiring stable component supply with consistent parametric performance and long-term manufacturability.
Supply support for NCP605MN18T2G 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, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The NCP605MN18T2G belongs to onsemi's NCP605/NCP606 family of low-IGND, low-noise LDOs engineered specifically for space-constrained, battery-powered portable electronics demanding high PSRR and minimal external components.
FAQ
What is the maximum input voltage for the NCP605MN18T2G?
The NCP605MN18T2G supports an absolute maximum input voltage of 6.5 V, but its recommended operating range is 1.5 V to 6.0 V. For reliable 1.8 V output regulation, minimum input must exceed VOUT + VDO (i.e., ≥2.05 V at 500 mA), or 1.5 V - whichever is higher. Exceeding 6.5 V risks permanent device damage.
Does the NCP605MN18T2G require an enable signal to operate?
No, the NCP605MN18T2G has no enable function - Pin 3 is designated NC (not connected) per the datasheet. The device powers up automatically when valid input voltage is applied to Pins 1 and 6. This simplifies control logic versus the pin-compatible NCP606MN18T2G, which includes an active-high EN pin.
What output capacitor value is required for stable operation of the NCP605MN18T2G?
The NCP605MN18T2G requires a minimum 1.0 µF ceramic output capacitor (X7R or X5R dielectric) placed adjacent to Pin 4 (Vout) and Pin 5 (SENSE/ADJ). Larger values (e.g., 10 µF) improve load transient response and noise rejection, but no minimum ESR is mandated - unlike older LDO architectures.
How does the NCP605MN18T2G handle thermal overload conditions?
The NCP605MN18T2G incorporates an internal thermal shutdown circuit that activates at approximately 175°C junction temperature, disabling the pass transistor until die temperature falls by ~10°C (hysteresis). This protects against sustained overload or inadequate PCB copper area, and recovery is automatic once thermal limits are restored.
Is the NCP605MN18T2G compatible with lead-free reflow soldering processes?
Yes, the NCP605MN18T2G is a Pb-free device packaged in RoHS-compliant DFN6 (Case 506AX) and qualified for standard lead-free reflow profiles, including peak temperatures up to 260°C. The exposed pad (EPAD) must be soldered to a thermal land for both electrical grounding and heat dissipation.
NCP605MN18T2G 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):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 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)
NCP605MN18T2G FAQ
1.How can I place an order for NCP605MN18T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP605MN18T2G 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 NCP605MN18T2G reliable?
The price and inventory of NCP605MN18T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP605MN18T2G is usually 5 days.
3.What payment methods are accepted for NCP605MN18T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP605MN18T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP605MN18T2G?
NCP605MN18T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP605MN18T2G 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 NCP605MN18T2G?
For technical support, including NCP605MN18T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP605MN18T2G requirements.
6.How does Aetrix verify that NCP605MN18T2G is sourced from the original manufacturer or authorized distributors?
All NCP605MN18T2G 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 NCP605MN18T2G meets industry standards.
7.What is the process for return or replacement of NCP605MN18T2G?
All NCP605MN18T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP605MN18T2G, 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 NCP605MN18T2G part is unused and in its original packaging.
Return procedure for NCP605MN18T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCP605MN18T2G Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
