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onsemi NCP606MN25T2G
- Part No.:
- NCP606MN25T2G
- Manufacturer:
- onsemi
- Package:
- 6-VDFN Exposed Pad
- Datasheet:
-
NCP606MN25T2G.pdf
- Description:
- IC REG LINEAR 2.5V 500MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,822
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Product details
Overview
NCP606MN25T2G from onsemi is a 2.5 V fixed-output, 500 mA low-dropout (LDO) linear regulator with enable functionality, designed for space-constrained portable battery-powered systems. It delivers ±2% output voltage tolerance over −40°C to +125°C, features 170 mV typical dropout at 500 mA, and supports ceramic output capacitors down to 1.0 µF. It is used in notebook computers and portable instrumentation where low ground current (145–180 µA) and high PSRR (62 dB @ 120 Hz) are critical.
For engineers reviewing the NCP606MN25T2G datasheet, pinout, applications, or equivalent options, key selection considerations include its DFN6 3×3.3 mm package with exposed thermal pad, EN pin active-high logic interface, SENSE/ADJ pin configuration for fixed-voltage operation, and verified thermal shutdown (175°C) and current limit (675 mA) protection.
Technical Context
The NCP606MN25T2G integrates a PMOS pass transistor with internal current limiting and thermal shutdown circuitry. Its enable input directly controls the pass element's biasing, allowing fast turn-on (12 µs typical) and disable (sub-µA IDIS) without external sequencing components.
It operates across 1.5 V to 6.0 V input range and maintains regulation down to 1.5 V minimum Vin (Vout + VDO), supporting wide-input battery-supplied rails. The SENSE/ADJ pin is internally connected to the error amplifier reference node and must be tied directly to the output capacitor for fixed-voltage use - no external resistors required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±2% over −40°C to +85°C; ensures stable core or I/O rail for microcontrollers and sensors without external feedback. |
| Max Output Current | 675 mA current limit; sustains full 500 mA load while protecting against short-circuit faults without external foldback. |
| Dropout Voltage | 170 mV typical at 500 mA; enables operation from single-cell Li-ion (3.0 V min) or dual-cell alkaline (3.2 V min) with margin. |
| Ground Current | 145–180 µA independent of load; minimizes quiescent power loss in always-on subsystems like real-time clocks. |
| PSRR | 62 dB @ 120 Hz, 55 dB @ 1 kHz; suppresses switching noise from upstream DC-DC converters feeding sensitive analog circuits. |
| Noise Voltage | 50 µVrms (10 Hz–100 kHz); eliminates need for external bypass capacitors in low-noise ADC or RF bias applications. |
| Enable Threshold | VEN(H) = 0.9 V, VEN(L) = 0.4 V; compatible with 1.8 V and 3.3 V GPIOs without level-shifting. |
Pinout & Package
Package: DFN6 3.0×3.3 mm, 0.95 mm pitch, exposed thermal pad (EPAD) connected to GND per Case 506AX. Pin 1 and Pin 6 are both Vin and must be externally shorted for full 500 mA capability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 6 | Vin | Positive input supply; dual pins reduce trace resistance and improve thermal conduction to PCB copper. |
| 2, EPAD | GND | Power ground and thermal path; EPAD must be soldered to ≥645 mm² 1 oz copper for RJA = 75°C/W. |
| 3 | EN | Active-high enable; pulls regulator into shutdown mode when < 0.4 V, drawing only 0.1–1 µA disable current. |
| 4 | Vout | Regulated 2.5 V output; requires ≥1.0 µF ceramic capacitor placed adjacent to pin for stability and transient response. |
| 5 | SENSE/ADJ | Output voltage sense node; for fixed 2.5 V version, must be connected directly to Vout capacitor - no divider needed. |
Key Features
| Feature | Design Value |
|---|---|
| Low IGND independent of load | 145–180 µA quiescent current maintained across 0–500 mA output, enabling predictable battery life modeling. |
| Enhanced ESD robustness | 4 kV HBM / 200 V MM rating allows direct handling in assembly without special ESD controls. |
| Thermal shutdown with hysteresis | 175°C trip point with 10°C hysteresis prevents oscillation during sustained overload or poor heatsinking. |
| Pb-free DFN6 package | RoHS-compliant 3×3.3 mm footprint reduces board area by >50% vs. SOIC-8 while improving thermal performance. |
| No minimum load requirement | Stable regulation at zero load eliminates need for dummy resistors - critical for ultra-low-power sleep modes. |
Applications
| Battery-Powered Instrumentation | Notebook Computer Subsystem |
|---|---|
Use Scenario: Portable multimeter with 16-bit SAR ADC and LCD backlight driver. IC Role / Device Role / Timing Role: Primary 2.5 V analog supply for precision ADC reference and signal chain. Use Value: 50 µVrms noise and 62 dB PSRR prevent digitization errors from switching supply ripple or digital noise coupling. |
Use Scenario: Always-on USB-C controller and embedded controller (EC) power domain. IC Role / Device Role / Timing Role: Standby LDO supplying 2.5 V to EC firmware memory and real-time clock. Use Value: 145 µA ground current extends battery hold-up time beyond 30 days in suspend-to-RAM states. |
| Hard Disk Drive Controller | Industrial Sensor Node |
Use Scenario: 2.5-inch HDD with SATA interface and spindle motor controller IC. IC Role / Device Role / Timing Role: Dedicated 2.5 V rail for SATA PHY and buffer memory interface. Use Value: 170 mV dropout enables operation from shared 3.3 V buck converter even under 10% line sag. |
Use Scenario: Wireless temperature/humidity sensor node powered by coin cell. IC Role / Device Role / Timing Role: Low-quiescent regulator for MCU, RF transceiver, and analog front-end. Use Value: EN pin allows MCU to gate power to RF section during sleep, reducing system-wide leakage by >90%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2502E/MB | 250 mA max output, 6 µA IQ, no enable pin, SOT-23 package. | Limited to ultra-low-power microcontroller I/O rails; insufficient for 500 mA loads like HDD controllers. | Select only for sub-100 mA applications where minimal quiescent current outweighs current capability. |
| TLC7701QD | Adjustable output (1.25–5.5 V), 150 mA, enable pin, SOIC-8 package. | Requires external resistor divider; lacks fixed 2.5 V option and thermal shutdown hysteresis. | Choose when adjustable voltage or legacy SOIC layout compatibility is required - not a drop-in replacement. |
Compared with MCP1700T-2502E/MB and TLC7701QD, the NCP606MN25T2G uniquely combines 500 mA output, fixed 2.5 V accuracy, enable control, and DFN6 thermal efficiency - making it optimal for compact, high-current portable designs where board area and thermal headroom are constrained.
Availability
NCP606MN25T2G is available at Aetrix Electronics and suitable for notebook computers, portable instrumentation, and battery-powered industrial sensors requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP606MN25T2G 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, and consumer markets.
The NCP606MN25T2G belongs to onsemi's NCP605/NCP606 family of low-IGND CMOS LDO regulators, engineered specifically for portable battery-powered devices demanding high PSRR, low noise, and small-footprint thermal performance.
FAQ
What is the maximum input voltage for the NCP606MN25T2G?
The NCP606MN25T2G 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 violating the minimum dropout condition (Vin ≥ Vout + VDO) or exceeding safe junction temperature limits, especially at high load currents. For reliable 2.5 V output, Vin must remain ≥ 2.67 V at 500 mA per the 170 mV typical dropout spec.
Does the NCP606MN25T2G require an external resistor divider for 2.5 V output?
No, the NCP606MN25T2G is a fixed-output variant and does not require an external resistor divider. Its SENSE/ADJ pin must be connected directly to the output capacitor (Vout node) to configure the internal feedback for 2.5 V regulation. External resistors are only needed for adjustable versions like NCP606MNADJT2G.
How is thermal performance affected if the EPAD is not soldered to PCB ground?
If the exposed pad (EPAD) of the NCP606MN25T2G is left unconnected or poorly soldered, thermal resistance rises significantly - RJA may exceed 150°C/W instead of the specified 75°C/W. This causes junction temperature to climb rapidly under 500 mA load, triggering thermal shutdown prematurely. Per datasheet Figure 23, ≥645 mm² of 1 oz copper under the EPAD is mandatory for rated power dissipation.
Can the NCP606MN25T2G be used without the enable pin connected?
Yes, the NCP606MN25T2G can operate with the EN pin tied permanently to Vin. This configures it as an always-on regulator, identical in behavior to the NCP605MN25T2G (which lacks EN). Doing so eliminates enable timing concerns but forfeits power-gating capability - useful only when continuous regulation is required and no system-level power sequencing is needed.
What output capacitor value is required for stability with the NCP606MN25T2G?
The NCP606MN25T2G is stable with a minimum 1.0 µF ceramic output capacitor, as confirmed in the datasheet's APPLICATIONS INFORMATION section. Larger values (e.g., 10 µF) improve load transient response and noise rejection but are not required for basic stability. X7R dielectric in 0805 case size (e.g., Murata GRM21BR71A106K) is recommended for low ESR and temperature stability.
NCP606MN25T2G 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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.25V @ 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)
NCP606MN25T2G FAQ
1.How can I place an order for NCP606MN25T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP606MN25T2G 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 NCP606MN25T2G reliable?
The price and inventory of NCP606MN25T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP606MN25T2G is usually 5 days.
3.What payment methods are accepted for NCP606MN25T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP606MN25T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP606MN25T2G?
NCP606MN25T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP606MN25T2G 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 NCP606MN25T2G?
For technical support, including NCP606MN25T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP606MN25T2G requirements.
6.How does Aetrix verify that NCP606MN25T2G is sourced from the original manufacturer or authorized distributors?
All NCP606MN25T2G 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 NCP606MN25T2G meets industry standards.
7.What is the process for return or replacement of NCP606MN25T2G?
All NCP606MN25T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP606MN25T2G, 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 NCP606MN25T2G part is unused and in its original packaging.
Return procedure for NCP606MN25T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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