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onsemi NCP4586DMU28TCG
- Part No.:
- NCP4586DMU28TCG
- Manufacturer:
- onsemi
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
NCP4586DMU28TCG.pdf
- Description:
- IC REG LINEAR 2.8V 150MA 4UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,641
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Product details
Overview
NCP4586DMU28TCG from onsemi is a CMOS 150 mA low-dropout linear regulator with 2.8 V fixed output, ±1% accuracy at 25°C, 320 mV typical dropout at full load, 80 dB PSRR at 1 kHz, and stable operation with 0.47 µF ceramic output capacitance. It serves as a precision local voltage source in space-constrained portable electronics requiring low noise and high ripple rejection.
For engineers reviewing the NCP4586DMU28TCG datasheet, pinout, applications, or equivalent options, key selection considerations include its UDFN4 (1.0 × 1.0 mm) package, enable-high logic, auto-discharge capability, and compatibility with low-ESR ceramic capacitors in battery-powered systems.
Technical Context
The NCP4586DMU28TCG implements a CMOS pass transistor architecture enabling ultra-low quiescent current (38–58 µA) and high PSRR across audio and switching noise frequencies. Its internal bandgap reference and error amplifier deliver tight output regulation over temperature (±20 ppm/°C) and line/load variations.
This device integrates an active pull-down circuit for fast output discharge during disable, supports input voltages from 1.7 V to 6.5 V, and features current-foldback protection. It operates across −40°C to +85°C ambient and is qualified per AEC-Q100 stress test standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V with ±1% accuracy at 25°C - ensures stable biasing for RF front-ends and analog sensors without external feedback. |
| Max Output Current | 150 mA continuous - sufficient to power microcontrollers, PMIC rails, or small displays in handheld devices. |
| Dropout Voltage | 320 mV typical at 150 mA - enables operation from single-cell Li-ion (3.0 V min) or two-cell alkaline (3.2 V min) sources. |
| PSRR | 80 dB at 1 kHz - suppresses switching noise from DC-DC converters feeding the LDO input rail. |
| Output Noise | 30 µVRMS (10 Hz–100 kHz) - meets low-noise requirements for ADC references and audio codec supplies. |
| Quiescent Current | 38–58 µA - extends battery life in always-on sensor nodes and standby modes. |
| Enable Polarity | Active-high CE pin - simplifies interface with GPIOs that drive high to activate power domains. |
Pinout & Package
Package: UDFN4 (1.0 mm × 1.0 mm, 0.65 mm pitch), Pb-free, moisture sensitivity level 1 (MSL1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 1.7–6.5 V; requires 470 nF ceramic decoupling placed adjacent to pin for transient stability. |
| GND | Ground reference | Common return path for input/output currents; must be low-impedance and thermally coupled to exposed pad. |
| CE | Chip enable control | Active-high logic input; internal pull-down ensures default-off state when unconnected. |
| VOUT | Regulated output | Delivers 2.8 V ±1% with <30 mV load regulation (1–150 mA); supports fast discharge via integrated N-ch transistor. |
| NC | No connection | Unbonded terminal; must remain floating - no routing or soldering permitted. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise output | 30 µVRMS (10 Hz–100 kHz) - eliminates need for post-LDO RC filtering in sensitive analog signal chains. |
| Auto-output discharge | Integrated N-channel discharge switch - reduces VOUT decay time to <100 µs after disable, preventing latch-up in downstream logic. |
| Stability with minimal capacitance | Guaranteed stable with ≥0.47 µF ceramic COUT - eliminates cost and board area of larger tantalum or polymer caps. |
| High PSRR at low frequency | 80 dB @ 1 kHz - rejects ripple from buck converter switching frequencies and their harmonics. |
| Low thermal resistance | RJA = 250°C/W (UDFN4) - enables 150 mA operation at +85°C ambient without heatsinking on standard 2-layer PCBs. |
Applications
| Wireless Headset Power Management | Digital Camera Sensor Bias |
|---|---|
Use Scenario: Powers Bluetooth audio SoC and MEMS microphone in compact earbud form factor with single-cell Li-ion battery. IC Role / Device Role / Timing Role: Primary 2.8 V LDO supplying RF transceiver core and analog front-end, synchronized to enable/disable with host MCU sleep/wake cycles. Use Value: Low 38 µA quiescent current extends standby time; 30 µVRMS noise prevents audible hiss in audio path; UDFN4 footprint saves >60% board area vs. SOT-23-5. |
Use Scenario: Supplies image sensor analog bias and ADC reference in ultra-thin point-and-shoot camera modules. IC Role / Device Role / Timing Role: Precision 2.8 V rail generator for CIS analog chain, activated only during image capture to minimize power draw. Use Value: ±1% output accuracy maintains consistent sensor gain calibration; 80 dB PSRR rejects noise from nearby flash LED drivers; fast discharge prevents ghost images during rapid shot-to-shot transitions. |
| Portable Medical Pulse Oximeter | Industrial IoT Edge Node |
Use Scenario: Provides clean 2.8 V supply to photodiode amplifier and analog signal conditioner in battery-operated wearable oximeters. IC Role / Device Role / Timing Role: Low-noise analog rail generator with enable-controlled sequencing, isolated from digital subsystem noise. Use Value: 30 µVRMS noise floor ensures sub-1% SpO₂ measurement accuracy; 320 mV dropout allows operation down to 3.0 V battery voltage; AEC-Q100 qualification supports medical reliability requirements. |
Use Scenario: Powers LoRaWAN transceiver and environmental sensor interface in sealed industrial telemetry node. IC Role / Device Role / Timing Role: Always-on 2.8 V regulator for real-time clock and wake-up controller, with fast enable response for event-triggered transmission. Use Value: 100 µs startup time enables rapid sensor readout; auto-discharge prevents back-powering during firmware updates; UDFN4 package withstands reflow and vibration in harsh enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2802E/TT | 250 mA rating, 17 µA IQ, no auto-discharge, SOT-23-3 package | Lacks fast output discharge; limited to simpler enable-only use cases without sequencing requirements | Select when lowest quiescent current is critical and discharge timing is not required. |
| TCS2112-2.8V | 150 mA, 50 µA IQ, 450 mV dropout at 150 mA, SC-70-5 package | Higher dropout limits usable input range; no integrated discharge transistor | Choose for cost-sensitive designs where 2.8 V rail tolerance allows higher dropout margin. |
Compared with MCP1700T-2802E/TT and TCS2112-2.8V, the NCP4586DMU28TCG uniquely combines auto-discharge, ultra-low noise, and UDFN4 miniaturization - making it optimal for space-constrained, multi-rail portable systems requiring precise power sequencing and fast turn-off.
Availability
NCP4586DMU28TCG is available at Aetrix Electronics and suitable for battery-powered equipment, portable communication devices, and digital imaging systems requiring stable component supply with guaranteed long-term manufacturability.
Supply support for NCP4586DMU28TCG 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, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The NCP4586DMU28TCG belongs to onsemi's NCP4586 family of low-noise, low-IQ LDOs designed specifically for space- and power-constrained portable electronics requiring high PSRR and fast transient response.
FAQ
What is the output voltage tolerance of the NCP4586DMU28TCG over temperature?
The NCP4586DMU28TCG delivers ±1.5% output voltage accuracy across the full operating temperature range of −40°C to +85°C for VOUT > 2 V. At 25°C, tolerance tightens to ±1%. This is verified per the Electrical Characteristics table on page 4 of the datasheet, where VOUT = 2.8 V × [0.985–1.015] under load and temperature variation.
Does the NCP4586DMU28TCG require an external capacitor on the CE pin for noise immunity?
No, the NCP4586DMU28TCG does not require an external capacitor on the CE pin. Its enable input has built-in hysteresis and ESD protection (2 kV HBM), and the internal pull-down current (0.4 µA) provides sufficient noise immunity for typical PCB layouts. External filtering is unnecessary unless operating in extreme EMI environments near RF transmitters.
Can the NCP4586DMU28TCG be used with a 10 µF tantalum output capacitor?
No - the NCP4586DMU28TCG is optimized for ceramic capacitors ≥0.47 µF and may oscillate with high-ESR tantalum capacitors. The datasheet explicitly warns that "if a tantalum capacitor is used, and its ESR is high, loop oscillation may result." For stable operation, use X5R/X7R ceramics with ESR < 100 mΩ.
What is the thermal performance of the NCP4586DMU28TCG in its UDFN4 package?
The NCP4586DMU28TCG in UDFN4 has a junction-to-air thermal resistance (RJA) of 250°C/W. At 150 mA and 3.0 V input (0.3 V dropout), power dissipation is 45 mW, resulting in ~11.3°C junction rise above ambient - well within the +150°C max rating. Performance assumes standard 2-layer PCB with exposed pad soldered to solid ground plane.
Is the NCP4586DMU28TCG pin-compatible with other variants in the NCP4586 family?
Yes - all NCP4586 variants in the UDFN4 package (e.g., NCP4586DMU12TCG, NCP4586DMU33TCG) share identical pinout, footprint, and thermal pad layout. Only the output voltage and marking code differ. This enables voltage-scaling flexibility without PCB redesign.
NCP4586DMU28TCG 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):
- 6.5V
- Voltage - Output (Min/Fixed):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.51V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 58 µA
- Current - Supply (Max):
- -
- PSRR:
- 80dB (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)
NCP4586DMU28TCG FAQ
1.How can I place an order for NCP4586DMU28TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4586DMU28TCG 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 NCP4586DMU28TCG reliable?
The price and inventory of NCP4586DMU28TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4586DMU28TCG is usually 5 days.
3.What payment methods are accepted for NCP4586DMU28TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4586DMU28TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP4586DMU28TCG?
NCP4586DMU28TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4586DMU28TCG 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 NCP4586DMU28TCG?
For technical support, including NCP4586DMU28TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4586DMU28TCG requirements.
6.How does Aetrix verify that NCP4586DMU28TCG is sourced from the original manufacturer or authorized distributors?
All NCP4586DMU28TCG 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 NCP4586DMU28TCG meets industry standards.
7.What is the process for return or replacement of NCP4586DMU28TCG?
All NCP4586DMU28TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP4586DMU28TCG, 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 NCP4586DMU28TCG part is unused and in its original packaging.
Return procedure for NCP4586DMU28TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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