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onsemi NCP4682DMU15TCG
- Part No.:
- NCP4682DMU15TCG
- Manufacturer:
- onsemi
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
NCP4682DMU15TCG.pdf
- Description:
- IC REG LINEAR 1.5V 150MA 4UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,834
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Product details
Overview
NCP4682DMU15TCG from onsemi is a 150 mA CMOS low-dropout linear voltage regulator with 1.5 V fixed output, ±0.8% output voltage accuracy, 0.28 V dropout (at 150 mA), and ultra-low 1.0 µA quiescent current. It features Chip Enable (active-high), auto-discharge functionality, and operates across 1.70–5.25 V input range-designed for power-sensitive battery-powered systems requiring stable low-voltage rail generation.
For engineers reviewing the NCP4682DMU15TCG datasheet, pinout, applications, or equivalent options, key selection criteria include enable-controlled shutdown, 1.5 V fixed output with ±40 ppm/°C tempco, ceramic-capacitor stability (≥0.1 µF), and UDFN4 1.0×1.0 mm package compatibility in space-constrained portable designs.
Technical Context
The NCP4682DMU15TCG integrates a precision bandgap reference, fold-back current limiting, and an internal N-channel pass transistor optimized for low dropout and fast load transient response. Its CE pin enables full shutdown with 0.1 µA standby current, while the auto-discharge path actively pulls VOUT to GND during disable to prevent floating outputs.
This device uses a CMOS architecture with no PNP/Pch pass element, enabling operation down to 1.70 V input and delivering high PSRR (30 dB at 1 kHz) and low output noise (70 µVRMS). It is specified for −40°C to +85°C ambient operation and supports stable regulation with minimal external components-only two 0.1 µF ceramic capacitors required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±0.8% (ensures precise biasing of 1.5 V logic, sensors, or RF front-ends) |
| Max Output Current | 150 mA continuous (supports microcontrollers, PMIC rails, and small peripherals) |
| Dropout Voltage | 0.28 V at 150 mA (enables regulation from 1.78 V input-critical for single-cell Li-ion or coin-cell applications) |
| Quiescent Current | 1.0 µA typical (minimizes battery drain in always-on monitoring circuits) |
| Standby Current | 0.1 µA with CE = low (reduces system sleep-mode power to sub-µA levels) |
| PSRR | 30 dB at 1 kHz (suppresses switching noise from adjacent DC-DC converters) |
| Temp Coefficient | ±40 ppm/°C (maintains <±1.2 mV drift over −40°C to +85°C for precision analog rails) |
Pinout & Package
Package: UDFN4 1.0 × 1.0 mm, 0.65 mm pitch, exposed thermal pad (connected to GND). Compact footprint ideal for wearables and IoT edge nodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VOUT) | Regulated output | Delivers stable 1.5 V; requires local 0.1 µF ceramic capacitor to GND for stability |
| 2 (GND) | Ground reference | Primary return path; connects to exposed thermal pad for thermal dissipation |
| 3 (CE) | Chip Enable input | Active-high control: >1.5 V enables regulator; <0.3 V disables with auto-discharge activation |
| 4 (VIN) | Input supply | Accepts 1.70–5.25 V; requires local 0.1 µF ceramic decoupling capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge function | Internal N-ch switch discharges VOUT to GND within microseconds upon CE deactivation-prevents unintended wake-up or latch-up in downstream circuitry |
| Ceramic capacitor stability | Stable with ≥0.1 µF X5R/X7R ceramics (no ESR requirement); eliminates need for tantalum or electrolytic capacitors |
| Fold-back current protection | Reduces output current and voltage during overload or short-circuit-limits power dissipation and prevents thermal runaway |
| Ultra-low quiescent current | 1.0 µA supply current enables >1-year battery life in 10 µA average-power sensor nodes (e.g., BLE beacons) |
| Wide input voltage range | 1.70–5.25 V operation supports direct connection to single-cell Li-ion (2.7–4.2 V), NiMH, or regulated 3.3 V/5 V supplies |
Applications
| Wearable Health Sensors | IoT Edge Node Power |
|---|---|
Use Scenario: Continuous ECG/PPG signal conditioning in wrist-worn monitors powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Provides clean, low-noise 1.5 V supply to analog front-end (AFE) and ADC reference. Use Value: 70 µVRMS output noise and ±40 ppm/°C tempco ensure <0.01% gain drift across body temperature range. |
Use Scenario: Always-on environmental sensor node with BLE radio, operating from 3.0 V Li-SOCl₂ primary battery. IC Role / Device Role / Timing Role: Generates 1.5 V rail for MCU core and sensor interface during active and deep-sleep modes. Use Value: 0.1 µA standby current extends 10-year battery life; CE pin synchronizes with MCU sleep/wake cycles. |
| Smart Home Remote Controls | Industrial Wireless Transmitters |
Use Scenario: IR/RF remote with motion-triggered wake-up, using alkaline AA cells. IC Role / Device Role / Timing Role: Supplies 1.5 V to ultra-low-power MCU and RF transceiver only when button press or accelerometer event occurs. Use Value: Fast CE turn-on (<100 µs) ensures immediate response; auto-discharge prevents residual VOUT from powering leakage paths. |
Use Scenario: Battery-powered 4–20 mA loop-powered transmitter with HART modulation capability. IC Role / Device Role / Timing Role: Powers isolated sensor interface and digital signal processor from limited loop-derived energy. Use Value: 0.28 V dropout allows operation down to 1.78 V input-maximizing usable battery voltage range before brown-out. |
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/MB | 150 mA, 1.5 V fixed, 1.6 µA IQ, no CE or auto-discharge | Lacks enable control and discharge path-requires external MOSFET for shutdown discharge | Select when lowest possible BOM count is prioritized and auto-discharge is not required |
| Torex XC6206P152MR-G | 150 mA, 1.5 V fixed, 1.0 µA IQ, CE pin but no auto-discharge | Supports enable but lacks integrated VOUT discharge-needs external resistor network | Choose when CE functionality is needed but board area permits discrete discharge solution |
Compared with MCP1700T-1502E/MB and XC6206P152MR-G, the NCP4682DMU15TCG uniquely combines ultra-low IQ, active-high CE, and integrated auto-discharge in a 1.0×1.0 mm UDFN-eliminating external components and reducing PCB footprint by >30% in space-constrained battery systems.
Availability
NCP4682DMU15TCG is available at Aetrix Electronics and suitable for wearable health sensors, IoT edge nodes, smart home remotes, and industrial wireless transmitters requiring stable component supply, long-term lifecycle support, and Pb-free compliance.
Supply support for NCP4682DMU15TCG 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP4682DMU15TCG belongs to onsemi's ultra-low-IQ LDO family, engineered specifically for battery-powered devices where multi-year runtime, rapid enable/disable response, and minimal board area are critical design constraints.
FAQ
What is the maximum input voltage rating for the NCP4682DMU15TCG?
The absolute maximum input voltage for the NCP4682DMU15TCG is 6.0 V per the Absolute Maximum Ratings table. However, the recommended operating input voltage range is 1.70 V to 5.25 V. Operation above 5.25 V is only permitted up to 5.50 V for ≤500 hours total cumulative time, as stated in Note 3 of the Electrical Characteristics section. For reliable long-term use, keep VIN ≤5.25 V in the NCP4682DMU15TCG design.
Does the NCP4682DMU15TCG require an external pull-up resistor on the CE pin?
No, the NCP4682DMU15TCG does not require an external pull-up resistor on the CE pin. The device includes an internal pull-down current source (0.3 µA typical) that ensures default disable state when CE is left unconnected. If enable functionality is not used, the CE pin may be tied directly to VIN to maintain permanent operation-no external resistor is needed for either configuration in the NCP4682DMU15TCG.
What is the thermal resistance (RJA) of the NCP4682DMU15TCG in its UDFN4 package?
The NCP4682DMU15TCG in the UDFN4 1.0×1.0 mm package has a junction-to-air thermal resistance (RJA) of 250 °C/W, as specified in the Thermal Characteristics table. This value assumes standard JEDEC test conditions (single-layer copper, 1 in² pad). Actual RJA improves significantly with PCB copper pour under the exposed thermal pad-designers should connect the pad directly to a solid GND plane to achieve optimal thermal performance in the NCP4682DMU15TCG layout.
Can the NCP4682DMU15TCG be used with tantalum output capacitors?
No, the NCP4682DMU15TCG is not recommended for use with tantalum output capacitors. The datasheet explicitly warns that high-ESR tantalum capacitors may cause loop oscillation and unstable regulation. The device is characterized and guaranteed stable only with ceramic capacitors ≥0.1 µF (X5R/X7R dielectrics). Using tantalum capacitors violates the stability requirements and risks erratic behavior in the NCP4682DMU15TCG application.
How does the auto-discharge feature operate in the NCP4682DMU15TCG?
When the CE pin is driven low, the NCP4682DMU15TCG activates an internal N-channel transistor between VOUT and GND, rapidly discharging the output capacitor. This action pulls VOUT to near-GND within microseconds-preventing residual voltage from powering downstream circuitry or causing undefined logic states. The discharge path is exclusive to the NCP4682D variant (including NCP4682DMU15TCG) and is not present in the NCP4682H or NCP4685 families.
NCP4682DMU15TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-UDFN 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):
- 0.8V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 1.5 µA
- Current - Supply (Max):
- -
- PSRR:
- 30dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-UDFN (1.0x1.0)
NCP4682DMU15TCG FAQ
1.How can I place an order for NCP4682DMU15TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4682DMU15TCG 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 NCP4682DMU15TCG reliable?
The price and inventory of NCP4682DMU15TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4682DMU15TCG is usually 5 days.
3.What payment methods are accepted for NCP4682DMU15TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4682DMU15TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP4682DMU15TCG?
NCP4682DMU15TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4682DMU15TCG 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 NCP4682DMU15TCG?
For technical support, including NCP4682DMU15TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4682DMU15TCG requirements.
6.How does Aetrix verify that NCP4682DMU15TCG is sourced from the original manufacturer or authorized distributors?
All NCP4682DMU15TCG 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 NCP4682DMU15TCG meets industry standards.
7.What is the process for return or replacement of NCP4682DMU15TCG?
All NCP4682DMU15TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP4682DMU15TCG, 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 NCP4682DMU15TCG part is unused and in its original packaging.
Return procedure for NCP4682DMU15TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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