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onsemi NCP690MN50T2G
- Part No.:
- NCP690MN50T2G
- Manufacturer:
- onsemi
- Package:
- 6-VDFN Exposed Pad
- Datasheet:
-
NCP690MN50T2G.pdf
- Description:
- IC REG LINEAR 5V 1A 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,107
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Product details
Overview
NCP690MN50T2G from onsemi is a fixed-output 5.0 V, 1 A CMOS low-dropout (LDO) voltage regulator in a 6-lead DFN3x3 package. It delivers ±2% output voltage tolerance over −40°C to 125°C, features 190 mV dropout at 1 A (VOUT = 2.5 V), active output discharge, and operates with ceramic capacitors for space-constrained portable battery-powered systems.
For engineers reviewing the NCP690MN50T2G datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed 1 A output current, low ground current (145 µA at 1 A load), high PSRR (62 dB at 120 Hz), 50 µVrms output noise, and thermal shutdown at 175°C - all critical for powering DSPs, FPGAs, and microprocessor cores.
Technical Context
The NCP690MN50T2G implements a PMOS pass transistor architecture with bandgap reference, internal current limiting, and thermal shutdown circuitry. Its fixed 5.0 V output is set by laser-trimmed resistors, eliminating external feedback components and simplifying layout for stable regulation under dynamic load conditions.
It uses a sense pin (SNS) connected directly to OUT for accurate remote sensing, supports input voltages from 1.5 V to 6.0 V, and includes active output discharge to prevent floating outputs during disable - a feature absent in NCP691/NCP692 variants with enable functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±2% over −40°C to 125°C - ensures stable core supply for 5 V–tolerant logic without external resistors. |
| Max Output Current | 1 A continuous - sufficient to power FPGA I/O banks or microprocessor peripherals without derating at TJ ≤ 125°C. |
| Dropout Voltage | 120 mV at 1 A (VOUT = 5.0 V) - enables operation from 5.12 V input, preserving headroom in battery-fed systems. |
| Ground Current | 145 µA at 1 A load - minimizes quiescent power loss in always-on subsystems like real-time clocks or wake-up controllers. |
| PSRR | 62 dB at 120 Hz - suppresses ripple from switching pre-regulators feeding the LDO, reducing need for additional filtering. |
| Output Noise | 50 µVrms (200 Hz–100 kHz) - meets low-noise requirements for analog sensor interfaces or ADC reference supplies. |
| Thermal Shutdown | 175°C with 10°C hysteresis - protects against sustained overload or poor PCB thermal design without latch-up. |
Pinout & Package
Package: DFN6 3×3 mm, 0.95 mm pitch, exposed thermal pad (Case 506AH, MN suffix). Pin 1 marked via top-side laser etch "69050".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 6 | IN | Primary input voltage supply pins - must be shorted externally to deliver full 1 A output current and minimize IR drop. |
| 2 | GND | Power ground tied to die substrate and exposed EPAD - requires direct connection to ≥64 mm² copper pour for thermal management. |
| 3 | N/C | No-connect pin - left unconnected per datasheet; not functional as enable or feedback in this fixed-voltage variant. |
| 4 | OUT | Regulated 5.0 V output - routed to load with minimal trace length to preserve transient response and stability. |
| 5 | SNS | Sense input - must be wired directly to OUT pin to compensate for PCB trace resistance and maintain ±2% regulation accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Active Output Discharge | Internally discharges OUT capacitor when input is removed - prevents unintended reset or latch-up in downstream logic during power-down sequences. |
| Ceramic Capacitor Stability | Stable with ≥1 µF ceramic output capacitor - eliminates need for tantalum or electrolytic caps, reducing board area and improving reliability. |
| Enhanced ESD Protection | 4 kV HBM / 200 V MM - withstands handling and board-level ESD events without latch-up or parametric shift. |
| Overshoot Clamp Circuit | Activates at +20 mV above nominal VOUT - limits voltage spikes during fast load-release transients, protecting 5 V-tolerant I/O cells. |
| Pb-Free & RoHS Compliant | Meets JEDEC J-STD-020 reflow profile - compatible with standard lead-free assembly processes without solder joint reliability concerns. |
Applications
| Laptops and PCI Cards | Modem Banks and Telecom Boards |
|---|---|
Use Scenario: Powering 5 V USB host controllers and PCIe slot auxiliary rails in ultrabook designs with tight thermal budgets. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying regulated power to high-speed serial interface PHYs and controller logic. Use Value: 120 mV dropout enables operation from shared 5.12 V buck converter output, while 50 µVrms noise prevents bit errors in USB 3.x signaling. | Use Scenario: Providing clean 5 V bias to line-card DSPs and analog front-end amplifiers in carrier-grade DSLAM modules. IC Role / Device Role / Timing Role: Local point-of-load regulator decoupling noisy switch-mode supplies before sensitive signal processing stages. Use Value: 62 dB PSRR at 120 Hz attenuates switching ripple from upstream DC/DC converters, maintaining SNR > 85 dB in voice-band channels. |
| DSP, FPGA, Microprocessor Boards | Hard Disk Drives |
Use Scenario: Delivering 5 V I/O supply to Xilinx Spartan-7 FPGA banks where rail stability affects configuration integrity and LVDS timing margins. IC Role / Device Role / Timing Role: Dedicated LDO for FPGA I/O voltage domain, isolated from core VCCINT switching noise. Use Value: ±2% tolerance and 10 mV load regulation ensure compliance with TDI/PCIe Gen3 I/O spec VOH/VOL thresholds across temperature and load. | Use Scenario: Regulating 5 V spindle motor driver logic and servo control ICs in 2.5-inch HDDs operating in mobile computing environments. IC Role / Device Role / Timing Role: Secondary LDO generating stable 5 V from main 12 V or 19 V adapter supply for motor control ASICs. Use Value: Active output discharge prevents back-feeding into disabled motor drivers during spin-down, avoiding unintended torque pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCP692MN50T2G | Includes active-high enable (EN) pin; otherwise identical electrical specs and pinout except Pin 3 = EN instead of N/C. | Required when system-level power sequencing mandates controlled turn-on/turn-off via processor GPIO. | Select NCP692MN50T2G only if enable functionality is needed; NCP690MN50T2G saves one GPIO and reduces BOM count where always-on operation suffices. |
| NCV8690MN50T2G | Automotive-grade variant (AEC-Q100 qualified); same electrical specs but tighter process controls and PPAP documentation support. | Required for automotive infotainment or ADAS ECUs where qualification to automotive reliability standards is mandatory. | Choose NCV8690MN50T2G for automotive programs; NCP690MN50T2G is optimized for cost-sensitive industrial and consumer applications. |
Compared with NCP692MN50T2G, the NCP690MN50T2G eliminates enable logic overhead and reduces system complexity for fixed-on applications; versus NCV8690MN50T2G, it offers identical performance at lower cost and shorter lead times for non-automotive use cases.
Availability
NCP690MN50T2G is available at Aetrix Electronics and suitable for laptops, telecom boards, and FPGA power delivery requiring stable component supply, RoHS-compliant packaging, and long-term production continuity.
Supply support for NCP690MN50T2G 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 consumer markets.
The NCP690 series belongs to onsemi's precision LDO family designed specifically for portable and space-constrained applications demanding ultra-low dropout, low noise, and robust thermal protection without external compensation.
FAQ
What is the maximum input voltage rating for the NCP690MN50T2G?
The NCP690MN50T2G has an absolute maximum input voltage of 6.5 V. However, its recommended operating input range is 1.5 V to 6.0 V. Exceeding 6.0 V may trigger internal protection or degrade long-term reliability, even if within absolute ratings. For reliable 5.0 V output, VIN should be ≥5.12 V (accounting for 120 mV dropout) and ≤6.0 V per datasheet guidance.
Does the NCP690MN50T2G require an external enable signal to operate?
No, the NCP690MN50T2G does not require an external enable signal. Pin 3 is designated N/C (no connect) and must be left unconnected. The device powers up automatically when valid input voltage is applied to IN pins. This differs from NCP691/NCP692 variants, which use Pin 3 as an active-low or active-high enable input.
Can the NCP690MN50T2G be used with ceramic output capacitors smaller than 10 µF?
Yes - the NCP690MN50T2G is stable with a minimum 1 µF ceramic output capacitor. While 10 µF is recommended for optimal load transient response and startup performance, the device meets stability requirements down to 1 µF, enabling compact designs where board space is constrained and low-ESR ceramics are used.
How does the SNS pin improve regulation accuracy in the NCP690MN50T2G?
The SNS (sense) pin in the NCP690MN50T2G provides remote voltage sensing by connecting directly to the OUT pin. This compensates for IR drop across PCB traces between the regulator and load, ensuring the feedback loop regulates at the actual load point rather than at the package pin - maintaining ±2% output accuracy even with 100 mΩ trace resistance.
Is the NCP690MN50T2G pin-compatible with other members of the NCP69x family?
The NCP690MN50T2G shares the same DFN6 3×3 mm package and pinout (IN/IN/GND/N/C/OUT/SNS) with NCP691 and NCP692 fixed-voltage variants, but Pin 3 function differs: NCP690MN50T2G uses it as N/C, while NCP691MN50T2G and NCP692MN50T2G use it as EN (active-low and active-high respectively). PCB layouts must account for this functional difference.
NCP690MN50T2G 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):
- 0.21V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 200 µA
- Current - Supply (Max):
- 240 µA
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (3x3)
NCP690MN50T2G FAQ
1.How can I place an order for NCP690MN50T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP690MN50T2G 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 NCP690MN50T2G reliable?
The price and inventory of NCP690MN50T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP690MN50T2G is usually 5 days.
3.What payment methods are accepted for NCP690MN50T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP690MN50T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP690MN50T2G?
NCP690MN50T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP690MN50T2G 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 NCP690MN50T2G?
For technical support, including NCP690MN50T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP690MN50T2G requirements.
6.How does Aetrix verify that NCP690MN50T2G is sourced from the original manufacturer or authorized distributors?
All NCP690MN50T2G 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 NCP690MN50T2G meets industry standards.
7.What is the process for return or replacement of NCP690MN50T2G?
All NCP690MN50T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP690MN50T2G, 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 NCP690MN50T2G part is unused and in its original packaging.
Return procedure for NCP690MN50T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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