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onsemi NCP4680DMX10TCG
- Part No.:
- NCP4680DMX10TCG
- Manufacturer:
- onsemi
- Package:
- 4-XFDFN Exposed Pad
- Datasheet:
-
NCP4680DMX10TCG.pdf
- Description:
- IC REG LINEAR 1V 150MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,564
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Product details
Overview
NCP4680DMX10TCG from onsemi is a 150 mA, low-noise, low-dropout linear voltage regulator with fixed 1.0 V output, XDFN4 0.8×0.8 mm package, ±1.0% output accuracy, 0.25 V dropout (at 150 mA, 2.5 V version), and integrated auto-discharge functionality. It delivers stable power to noise-sensitive analog and digital circuitry in compact portable systems.
For engineers reviewing the NCP4680DMX10TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its 1.0 V fixed output, 50 µA quiescent current, 75 dB PSRR at 1 kHz, ceramic-capacitor stability (≥0.1 µF), and active output discharge during shutdown - critical for sequencing and leakage control in battery-powered designs.
Technical Context
The NCP4680DMX10TCG employs a CMOS-based LDO architecture with internal N-channel pass transistor, enabling low dropout and high PSRR across 10 Hz–1 MHz. Its chip-enable (CE) input operates with TTL-compatible thresholds (VCEH = 1.0 V min), and the D-suffix variant integrates an internal discharge FET between VOUT and GND activated upon CE deactivation.
This regulator supports fast line/load transient response due to optimized internal compensation and operates across 1.40 V–5.25 V input range while maintaining regulation down to 1.0 V output. Thermal protection and fold-back current limiting ensure robustness under overload or short-circuit conditions without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.0 V ±1.0% over −40°C to +85°C - ensures precise core/bias rail compliance for 1.0 V logic or analog subsystems. |
| Max Output Current | 150 mA continuous - sufficient for powering single-core microcontrollers, sensors, or RF front-end bias circuits. |
| Dropout Voltage | 0.25 V typical at 150 mA, 2.5 V version - enables operation from 1.25 V input, supporting ultra-low-voltage battery sources (e.g., single LiFePO₄ cell). |
| Quiescent Current | 50 µA typical - minimizes standby power loss in always-on subsystems like real-time clocks or wake-up controllers. |
| PSRR | 75 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters, preserving signal integrity in ADCs and audio paths. |
| Output Noise | 20 × VOUT µVRMS (10 Hz–100 kHz) - translates to 20 µVRMS at 1.0 V, suitable for low-noise analog references and precision amplifiers. |
| Stability | Stable with ≥0.1 µF ceramic output capacitor - eliminates need for bulky tantalum or electrolytic capacitors, reducing board area and cost. |
Pinout & Package
XDFN4 0.8×0.8 mm, 4-pin package with exposed thermal pad (connected to GND). Compact footprint ideal for space-constrained wearables and IoT edge nodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 1.40–5.25 V; requires local 0.1 µF ceramic decoupling to minimize line transients and EMI susceptibility. |
| GND | Ground reference and thermal pad | Must be connected to PCB ground plane; exposed pad improves thermal dissipation (RJA = 350°C/W). |
| CE | Chip enable control input | Active-high TTL-compatible input; pulls down internally at 0.3 µA - connect to VIN if unused, or drive with GPIO for power sequencing. |
| VOUT | Regulated output | Delivers fixed 1.0 V; includes internal discharge FET (D-version) that actively sinks current to GND when CE = low, ensuring rapid VOUT decay. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge function | Integrated VOUT-to-GND discharge FET reduces output hold-up time after shutdown - essential for multi-rail sequencing and leakage-sensitive applications. |
| Low-noise regulation | 20 µVRMS output noise (10 Hz–100 kHz) enables clean power delivery to RF ICs, PLLs, and high-resolution ADCs without additional filtering. |
| Fold-back current limit | Reduces power dissipation during overloads/shorts by lowering output current as voltage drops - prevents thermal runaway and enhances reliability. |
| Ceramic capacitor compatibility | Stable with ≥0.1 µF X7R/X5R ceramics - eliminates ESR dependency, simplifies BOM, and improves long-term reliability vs. tantalum alternatives. |
| Pb-free XDFN4 package | 0.8×0.8 mm, 0.48 mm pitch, RoHS-compliant - supports fine-pitch automated assembly and meets environmental compliance requirements for global markets. |
Applications
| Battery-Powered Wearables | IoT Sensor Node Power |
|---|---|
Use Scenario: Ultra-compact fitness tracker with BLE SoC, accelerometer, and OLED display operating from single 3.0 V coin cell. IC Role / Device Role / Timing Role: Primary 1.0 V LDO supplying BLE radio core voltage and sensor interface logic. Use Value: 50 µA quiescent current extends battery life beyond 6 months; auto-discharge prevents residual VOUT from back-powering disabled peripherals. |
Use Scenario: Wireless environmental sensor node (temperature/humidity) powered by 2×AA alkaline batteries with duty-cycled MCU and radio. IC Role / Device Role / Timing Role: Low-noise 1.0 V rail for precision analog front-end and ADC reference. Use Value: 20 µVRMS noise and 75 dB PSRR maintain <12-bit ENOB in ADC measurements despite switching regulator ripple on main 3.3 V rail. |
| Portable Medical Monitors | Industrial Control Edge Module |
Use Scenario: Handheld pulse oximeter with optical sensor, analog signal chain, and low-power MCU. IC Role / Device Role / Timing Role: Clean 1.0 V supply for transimpedance amplifier and analog signal conditioning stage. Use Value: Low dropout allows operation down to 1.25 V input - maximizes usable battery voltage range and runtime before replacement. |
Use Scenario: DIN-rail mounted PLC I/O module with isolated CAN interface and local 1.0 V logic rail for FPGA configuration memory. IC Role / Device Role / Timing Role: Secondary regulated rail derived from 3.3 V isolated DC-DC converter. Use Value: Fast load transient response (<50 µs recovery) maintains 1.0 V stability during FPGA configuration bursts, preventing bitstream corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1002E/TT | 100 mA max output, no auto-discharge, SOT-23-3 package, 6 µA IQ | Lacks active VOUT discharge; lower current rating limits use in higher-load 1.0 V domains. | Select when ultra-low IQ dominates over discharge requirement and load ≤100 mA. |
| Torex XC6210B102MR-G | 150 mA, 1.0 V fixed, SOT-25, no auto-discharge, 25 µA IQ | Same current capability but no integrated discharge FET; requires external circuitry for VOUT decay control. | Choose for cost-sensitive designs where external discharge can be implemented and board space permits SOT-25. |
Compared with MCP1700T-1002E/TT and XC6210B102MR-G, the NCP4680DMX10TCG uniquely combines 150 mA output, 1.0 V fixed regulation, and built-in auto-discharge in a 0.8×0.8 mm XDFN4 package - eliminating external components and PCB area otherwise needed for safe power-down sequencing.
Availability
NCP4680DMX10TCG is available at Aetrix Electronics and suitable for battery-powered wearables, IoT sensor nodes, portable medical monitors, and industrial control edge modules requiring stable component supply, automotive-grade reliability, and Pb-free compliance.
Supply support for NCP4680DMX10TCG 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, delivering silicon solutions for automotive, industrial, cloud, and IoT applications.
The NCP4680DMX10TCG belongs to onsemi's NCP4680 family of low-noise, low-IQ LDOs designed specifically for space-constrained, battery-operated devices requiring precise, sequenced, and low-ripple power rails.
FAQ
What is the output voltage tolerance of the NCP4680DMX10TCG over temperature?
The NCP4680DMX10TCG maintains ±1.0% output voltage accuracy across −40°C to +85°C ambient temperature. At 25°C, tolerance tightens to ±1.0% for VOUT ≥ 1.8 V and ±18 mV for lower outputs - confirming 1.0 V nominal output stays within 0.99 V–1.01 V over full industrial range.
Does the NCP4680DMX10TCG require an external discharge resistor?
No. The NCP4680DMX10TCG includes an internal discharge FET activated when the CE pin is driven low. This feature actively pulls VOUT to GND, eliminating the need for external resistors and ensuring controlled, rapid output decay during shutdown - a key advantage over standard LDOs.
Can the NCP4680DMX10TCG operate with a 1.2 V input supply?
No. The minimum operating input voltage for NCP4680DMX10TCG is 1.40 V per datasheet specifications. With a 1.0 V output and 0.25 V typical dropout, it requires ≥1.25 V to regulate - but the absolute minimum VIN is specified as 1.40 V to guarantee performance across process, voltage, and temperature corners.
What ceramic capacitor value is recommended for stable operation of the NCP4680DMX10TCG?
A minimum 0.1 µF X7R or X5R ceramic capacitor is required on the output for stability. The datasheet confirms stability with ≥0.1 µF ceramics and warns against high-ESR tantalum capacitors, which may cause oscillation. Larger values (e.g., 1 µF) further improve load transient response.
Is the thermal pad on the NCP4680DMX10TCG package electrically connected?
Yes. The exposed thermal pad on the XDFN4 package is internally connected to GND. It must be soldered to a PCB ground plane to achieve rated thermal performance (RJA = 350°C/W); leaving it unconnected degrades thermal resistance and risks junction overheating under 150 mA load.
NCP4680DMX10TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-XFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.25V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.82V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 70 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-XDFN (0.8x0.8)
NCP4680DMX10TCG FAQ
1.How can I place an order for NCP4680DMX10TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4680DMX10TCG 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 NCP4680DMX10TCG reliable?
The price and inventory of NCP4680DMX10TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4680DMX10TCG is usually 5 days.
3.What payment methods are accepted for NCP4680DMX10TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4680DMX10TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP4680DMX10TCG?
NCP4680DMX10TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4680DMX10TCG 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 NCP4680DMX10TCG?
For technical support, including NCP4680DMX10TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4680DMX10TCG requirements.
6.How does Aetrix verify that NCP4680DMX10TCG is sourced from the original manufacturer or authorized distributors?
All NCP4680DMX10TCG 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 NCP4680DMX10TCG meets industry standards.
7.What is the process for return or replacement of NCP4680DMX10TCG?
All NCP4680DMX10TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP4680DMX10TCG, 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 NCP4680DMX10TCG part is unused and in its original packaging.
Return procedure for NCP4680DMX10TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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