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onsemi NCP4680DMX15TCG
- Part No.:
- NCP4680DMX15TCG
- Manufacturer:
- onsemi
- Package:
- 4-XFDFN Exposed Pad
- Datasheet:
-
NCP4680DMX15TCG.pdf
- Description:
- IC REG LINEAR 1.5V 150MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,544
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Product details
Overview
NCP4680DMX15TCG from onsemi is a 150 mA CMOS low-dropout linear voltage regulator with fixed 1.5 V output, ±1.0% accuracy, 0.25 V dropout at 150 mA (VOUT = 2.5 V), and 75 dB PSRR at 1 kHz - designed for noise-sensitive power rails in compact portable electronics.
For engineers reviewing the NCP4680DMX15TCG datasheet, pinout, applications, or equivalent options, this page delivers verified specifications, XDFN4 package layout, auto-discharge functionality, thermal performance data, and validated alternative options for battery-powered and communication subsystem designs.
Technical Context
The NCP4680DMX15TCG implements a CMOS-based LDO architecture with integrated chip enable (active-high CE) and an internal output discharge transistor - enabling fast VOUT ramp-down during shutdown. Its fold-back current limit protects against sustained overloads while minimizing thermal stress.
It operates across 1.40 V to 5.25 V input range, supports ceramic output capacitors ≥0.1 µF, and maintains stable regulation under load transients up to 150 mA with sub-100 µs recovery - confirmed by Figures 39–46 in the datasheet for the 1.5 V variant's behavior across temperature and line/load steps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±1.0% over −40°C to +85°C - ensures precise biasing for 1.5 V logic, memory I/O, or analog sensor interfaces. |
| Max Output Current | 150 mA continuous - sufficient for powering single-core microcontrollers, RF front-end ICs, or small FPGA I/O banks. |
| Dropout Voltage | 0.25 V at 150 mA and VOUT = 2.5 V; for 1.5 V version, typical dropout is ≤0.32 V - enables operation from single Li-ion or 2-cell alkaline sources. |
| PSRR | 75 dB at 1 kHz - suppresses switching noise from upstream DC/DC converters feeding noisy intermediate rails. |
| Quiescent Current | 50 µA typical - extends battery life in always-on monitoring circuits without compromising startup speed. |
| Enable Threshold | VCEH = 1.0 V min - compatible with 1.8 V GPIOs and allows direct control from low-voltage MCUs. |
| Thermal Resistance | RJA = 350°C/W (XDFN4) - requires minimal PCB copper area for thermal relief in space-constrained layouts. |
Pinout & Package
XDFN4 0.8 mm × 0.8 mm, 0.48 mm pitch, Pb-free package with exposed thermal pad connected to GND. Tab must be soldered to PCB ground plane for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Regulated 1.5 V output; connects to local bypass capacitor (≥0.1 µF ceramic) and load. |
| 2 | GND | Ground reference for regulation and CE logic; tied to thermal pad on underside. |
| 3 | CE | Active-high enable input; internal pull-down ensures default-off state; drives high to activate regulator. |
| 4 | VIN | Noise-filtered input supply (1.40–5.25 V); requires 0.1 µF ceramic decoupling adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-Discharge Function | Integrated NMOS between VOUT and GND activates on CE deactivation - discharges output cap in <1 ms, preventing residual voltage hold-up in power sequencing. |
| Low-Noise Regulation | Output noise ≤30 µVrms (10 Hz–100 kHz, VOUT = 1.5 V) - suitable for ADC references and RF synthesizer supplies. |
| Fold-Back Current Limit | Reduces short-circuit power dissipation by lowering output current as VOUT collapses - limits junction temperature rise during fault conditions. |
| Ceramic-Capacitor Stable | Guaranteed stability with ≥0.1 µF X7R/X5R ceramic output capacitor - eliminates need for tantalum or electrolytic parts, reducing BOM count and footprint. |
| Wide Input Range | 1.40 V to 5.25 V operation - supports direct connection to LiFePO4, single Li-ion, or regulated 3.3 V/5 V system rails. |
Applications
| Portable Medical Sensors | IoT Edge Node Power |
|---|---|
|
Use Scenario: Powering ultra-low-power pulse oximeter analog front-end and BLE SoC in wearable patch design. IC Role / Device Role / Timing Role: Primary 1.5 V rail regulator delivering clean, sequenced power with fast shutdown discharge to meet medical device leakage requirements. Use Value: Auto-discharge prevents >100 µA standby current from residual VOUT charge, extending 2-week battery life by 12% in sleep cycles. |
Use Scenario: Supplying 1.5 V I/O domain of RISC-V microcontroller and environmental sensor cluster in battery-operated smart meter. IC Role / Device Role / Timing Role: Low-quiescent LDO enabling MCU deep-sleep mode while maintaining sensor bias; CE synchronized to wake-up interrupt. Use Value: 50 µA IQ and 1.0 V CE threshold allow direct GPIO control from 1.8 V MCU without level-shifting, simplifying PCB routing. |
| HD Camera Module Core | Industrial Wireless Gateway |
|
Use Scenario: Providing 1.5 V core voltage to image signal processor (ISP) in compact HD security camera module. IC Role / Device Role / Timing Role: Noise-suppressing post-regulator for ISP digital core, placed after primary 3.3 V buck converter. Use Value: 75 dB PSRR at 1 kHz attenuates switching ripple from upstream DC/DC, reducing image sensor pattern noise by 8 dB. |
Use Scenario: Powering 1.5 V PHY interface of industrial Ethernet controller in DIN-rail gateway with wide ambient temperature range. IC Role / Device Role / Timing Role: High-accuracy, thermally robust LDO supporting −40°C to +85°C operation with ±1.0% output tolerance. Use Value: ±1.0% VOUT accuracy over temperature ensures compliant LVDS signaling margins across full industrial grade range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1502E/TT | 150 mA, 1.5 V fixed, 6 µA IQ, no auto-discharge, SOT-23 package | Lacks output discharge; higher thermal resistance (RJA ≈ 238°C/W) limits high-ambient use | Select when ultra-low IQ dominates over shutdown sequencing; verify thermal margin at 150 mA in enclosure. |
| Torex XC6219B152MR-G | 150 mA, 1.5 V fixed, 1.0 µA IQ, no CE pin, 0.8×0.8 mm DFN | No enable control or auto-discharge; optimized only for static low-power loads | Choose only for always-on, non-sequenced rails where 1.0 µA IQ justifies loss of active control and discharge. |
Compared with MCP1700T-1502E/TT and XC6219B152MR-G, the NCP4680DMX15TCG uniquely combines 1.5 V precision, auto-discharge, and 50 µA IQ in XDFN4 - making it the sole option meeting simultaneous requirements for compact size, controlled shutdown, and low-noise 150 mA delivery.
Availability
NCP4680DMX15TCG is available at Aetrix Electronics and suitable for portable medical sensors, IoT edge nodes, HD camera modules, and industrial wireless gateways requiring stable component supply with guaranteed Pb-free compliance and tape-and-reel packaging.
Supply support for NCP4680DMX15TCG 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 NCP4680DMX15TCG belongs to onsemi's NCP4680 series of low-noise, auto-discharge LDOs - engineered specifically for space-constrained, battery-powered systems demanding precise voltage regulation, fast transient response, and controlled power sequencing.
FAQ
What is the maximum input voltage rating for the NCP4680DMX15TCG?
The NCP4680DMX15TCG has an absolute maximum input voltage of 6.0 V per its Absolute Maximum Ratings table. Operation above 5.25 V is not recommended, as the device is specified for reliable performance only within the 1.40 V to 5.25 V operating input range. Exceeding 6.0 V risks permanent damage to the NCP4680DMX15TCG.
Does the NCP4680DMX15TCG require external components for stable operation?
Yes - the NCP4680DMX15TCG requires two 0.1 µF ceramic capacitors: one placed between VIN and GND, and another between VOUT and GND, both located as close as possible to their respective pins. These capacitors are mandatory for stability, transient response, and noise suppression; omitting either compromises regulation integrity and may cause oscillation.
How does the auto-discharge feature function in the NCP4680DMX15TCG?
When the CE pin is driven low, the NCP4680DMX15TCG activates an internal NMOS transistor between VOUT and GND, discharging the output capacitor rapidly. This feature ensures VOUT falls to near-zero within milliseconds, eliminating residual voltage that could interfere with downstream power sequencing or violate safety standards in battery-powered devices using the NCP4680DMX15TCG.
What is the thermal performance of the NCP4680DMX15TCG in its XDFN4 package?
The NCP4680DMX15TCG in XDFN4 has a junction-to-air thermal resistance (RJA) of 350°C/W. At 150 mA output and 0.32 V dropout, power dissipation is ~48 mW - resulting in ~17°C junction-to-ambient rise under still-air conditions. For sustained 150 mA loads, thermal relief via PCB copper pour under the exposed pad is strongly advised to maintain reliability of the NCP4680DMX15TCG.
Is the NCP4680DMX15TCG pin-compatible with other variants in the NCP4680 family?
Yes - all NCP4680 variants in the XDFN4 package (e.g., NCP4680DMX10TCG, NCP4680DMX18TCG) share identical pinout, footprint, and package dimensions. Voltage selection is factory-set; swapping variants requires only board-level rework of the part number and no layout change - enabling flexible voltage tuning across NCP4680DMX15TCG and related fixed-output versions.
NCP4680DMX15TCG 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):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.54V @ 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)
NCP4680DMX15TCG FAQ
1.How can I place an order for NCP4680DMX15TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4680DMX15TCG 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 NCP4680DMX15TCG reliable?
The price and inventory of NCP4680DMX15TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4680DMX15TCG is usually 5 days.
3.What payment methods are accepted for NCP4680DMX15TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4680DMX15TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP4680DMX15TCG?
NCP4680DMX15TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4680DMX15TCG 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 NCP4680DMX15TCG?
For technical support, including NCP4680DMX15TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4680DMX15TCG requirements.
6.How does Aetrix verify that NCP4680DMX15TCG is sourced from the original manufacturer or authorized distributors?
All NCP4680DMX15TCG 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 NCP4680DMX15TCG meets industry standards.
7.What is the process for return or replacement of NCP4680DMX15TCG?
All NCP4680DMX15TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP4680DMX15TCG, 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 NCP4680DMX15TCG part is unused and in its original packaging.
Return procedure for NCP4680DMX15TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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