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onsemi NCP4586DSQ28T1G
- Part No.:
- NCP4586DSQ28T1G
- Manufacturer:
- onsemi
- Package:
- SC-82A, SOT-343
- Datasheet:
-
NCP4586DSQ28T1G.pdf
- Description:
- IC REG LINEAR 2.8V 150MA SC82AB
- Quantity:
- Payment:
- Shipping:
Inventory:11,835
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Product details
Overview
NCP4586DSQ28T1G from onsemi is a CMOS low-dropout linear regulator delivering 150 mA output with 2.8 V fixed output voltage, ±1% accuracy at 25°C, 320 mV typical dropout at full load, and 80 dB PSRR at 1 kHz - deployed in battery-powered portable electronics requiring stable, low-noise power for analog sensors and RF front-ends.
For engineers reviewing the NCP4586DSQ28T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its SC−82AB package footprint, enable-high logic with auto-discharge, 30 µVRMS output noise (10 Hz–100 kHz), and compatibility with 0.47 µF ceramic output capacitors without external compensation.
Technical Context
The NCP4586DSQ28T1G implements a CMOS pass transistor architecture with internal voltage reference and error amplifier, supporting enable-controlled startup/shutdown and active output discharge during disable. Its feedback loop is internally compensated for stability with ≥0.47 µF ceramic output capacitance.
It operates across 1.7 V to 6.5 V input range while maintaining 2.8 V output within ±1% (25°C) and ±1.5% (−40°C to +85°C), with thermal shutdown and current foldback protection. The device draws only 38–58 µA quiescent current and 0.1–1 µA standby current depending on enable state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V, ±1% accuracy at 25°C - ensures precise biasing for 2.8 V logic rails and analog circuitry. |
| Max Output Current | 150 mA continuous - sufficient for powering microcontrollers, sensors, and low-power RF ICs. |
| 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 upstream DC/DC converters feeding the LDO input. |
| Output Noise | 30 µVRMS (10 Hz–100 kHz) - low enough for noise-sensitive ADC references and RF VCO supply. |
| Quiescent Current | 38–58 µA - minimizes battery drain in always-on sensor nodes and wearables. |
| Enable Threshold | VCEH = 1.0 V min - compatible with 1.8 V and 3.3 V GPIO control without level shifting. |
Pinout & Package
Package: SC−82AB (Case 419C), 4-pin surface-mount, 1.8 × 1.15 × 0.8 mm body, Pb-free, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 1.7–6.5 V; requires 470 nF ceramic decoupling capacitor placed adjacent to pin. |
| GND | Power ground reference | Low-impedance return path for input/output currents; must be tied to solid ground plane. |
| CE | Enable control input (active high) | Drives regulator ON when ≥1.0 V; internal pull-down ensures default OFF state if left floating. |
| VOUT | Regulated output terminal | Delivers stable 2.8 V; supports fast auto-discharge via internal NMOS to GND upon CE deactivation. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge function | Internal NMOS discharges output capacitor rapidly on disable - prevents residual voltage hold-up in power sequencing. |
| Ultra-low noise output | 30 µVRMS (10 Hz–100 kHz) - eliminates need for post-LDO RC filtering in precision analog signal chains. |
| Stable with minimal capacitance | 0.47 µF ceramic output capacitor sufficient - reduces BOM count and PCB area vs. traditional LDOs requiring ≥2.2 µF. |
| High PSRR at audio frequencies | 80 dB at 1 kHz - effectively rejects ripple from buck converter switching at 500 kHz–2 MHz fundamental harmonics. |
| Wide input voltage range | 1.7–6.5 V operation - accommodates single Li-ion, dual alkaline, USB 5 V, and intermediate DC bus rails. |
Applications
| Portable Medical Sensors | Wireless Audio Transceivers |
|---|---|
Use Scenario: Powering MEMS accelerometers and analog front-end amplifiers in wearable ECG patches. IC Role / Device Role / Timing Role: Low-noise 2.8 V bias supply ensuring <1 LSB error in 12-bit ADC conversions. Use Value: 30 µVRMS noise avoids signal degradation; 150 mA headroom supports burst-mode sensor sampling. |
Use Scenario: Supplying Bluetooth LE audio codec ICs and crystal oscillator circuits in true wireless stereo earbuds. IC Role / Device Role / Timing Role: Clean 2.8 V rail for RF synthesizer VCO and digital baseband core logic. Use Value: 80 dB PSRR isolates sensitive RF sections from noisy DC/DC converter inputs; SC−82AB footprint saves space in compact earbud PCBs. |
| Industrial IoT Edge Nodes | Smart Camera Modules |
Use Scenario: Regulating power for ultra-low-power microcontrollers and LoRaWAN transceivers in battery-operated field sensors. IC Role / Device Role / Timing Role: Primary system LDO enabling deep-sleep current as low as 0.1 µA via CE control. Use Value: 38 µA quiescent current extends 10-year battery life; auto-discharge prevents leakage through downstream loads during sleep. |
Use Scenario: Providing stable 2.8 V to CMOS image sensor analog blocks and ISP cores in compact surveillance modules. IC Role / Device Role / Timing Role: Precision voltage source for pixel array bias and ADC reference voltage generation. Use Value: ±1% output accuracy maintains consistent exposure calibration; 320 mV dropout allows use of aging batteries down to 3.1 V. |
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 rated, 6 µA quiescent current, no auto-discharge, SOT-23-3 package | Lacks active output discharge; lower IQ suits multi-year battery life but requires external discharge path | Choose for ultra-low-IQ designs where auto-discharge is handled externally or unnecessary |
| Torex XC6206P282MR-G | 150 mA rated, 1 µA standby current, no enable pin, SOT-23-3 package | Fixed ON operation only; no CE control or auto-discharge; smaller footprint but less flexible sequencing | Choose for cost-sensitive, always-on applications where enable control is not required |
Compared with MCP1700T-2802E/TT and XC6206P282MR-G, the NCP4586DSQ28T1G uniquely combines enable-high logic, integrated auto-discharge, and SC−82AB's 4-pin layout - making it optimal for space-constrained, sequenced power systems in portable electronics.
Availability
NCP4586DSQ28T1G is available at Aetrix Electronics and suitable for portable medical sensors, wireless audio transceivers, and industrial IoT edge nodes requiring stable component supply with guaranteed long-term manufacturability and RoHS-compliant sourcing.
Supply support for NCP4586DSQ28T1G 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, with leadership in power management, analog, and sensor technologies.
The NCP4586DSQ28T1G belongs to the NCP4586 family of low-noise, low-dropout regulators designed specifically for battery-powered portable equipment demanding high PSRR, minimal board space, and reliable power sequencing.
FAQ
What is the output voltage tolerance of the NCP4586DSQ28T1G over temperature?
The NCP4586DSQ28T1G maintains output voltage within ±1.5% over the full operating ambient temperature range of −40°C to +85°C. At 25°C, the tolerance tightens to ±1%, and the output voltage temperature coefficient is ±20 ppm/°C - ensuring predictable drift in thermally varying environments like automotive cabins or outdoor IoT enclosures.
Does the NCP4586DSQ28T1G require an external capacitor on the CE pin for noise immunity?
No, the NCP4586DSQ28T1G does not require an external capacitor on the CE pin. Its enable input has built-in hysteresis and is specified to operate reliably with clean digital GPIO signals. However, if routing CE across noisy sections of the PCB, a 100 pF ceramic capacitor to ground near the pin may improve noise margin - though this is not required per the datasheet.
Can the NCP4586DSQ28T1G be used with tantalum output capacitors?
The NCP4586DSQ28T1G is optimized for ceramic output capacitors ≥0.47 µF. Tantalum capacitors are not recommended due to their higher ESR, which can cause loop instability and oscillation. If tantalum must be used, a minimum 10 µF unit with ESR ≤100 mΩ is required - but ceramic remains the validated, preferred solution per the datasheet.
What is the thermal resistance (RJA) of the NCP4586DSQ28T1G in its SC−82AB package?
The NCP4586DSQ28T1G in SC−82AB package has a junction-to-air thermal resistance (RJA) of 263°C/W under standard JEDEC test conditions (1s² copper pad). With proper PCB copper pour under the exposed pad (if applicable) and adequate airflow, actual RJA can be reduced by 30–50%, enabling sustained 150 mA operation at ambient temperatures up to 70°C.
How does the auto-discharge feature of the NCP4586DSQ28T1G behave during shutdown?
When the CE pin is driven low, the NCP4586DSQ28T1G activates an internal NMOS transistor between VOUT and GND, discharging the output capacitor at a rate determined by load and capacitance. For a typical 4.7 µF output cap, VOUT falls from 2.8 V to 0.3 V in <1 ms - enabling fast, deterministic power-down sequences critical in multi-rail systems and battery safety protocols.
NCP4586DSQ28T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Bulk
- 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:
- SC-82AB
NCP4586DSQ28T1G FAQ
1.How can I place an order for NCP4586DSQ28T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4586DSQ28T1G 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 NCP4586DSQ28T1G reliable?
The price and inventory of NCP4586DSQ28T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4586DSQ28T1G is usually 5 days.
3.What payment methods are accepted for NCP4586DSQ28T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4586DSQ28T1G transactions.
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4.How is shipping managed for NCP4586DSQ28T1G?
NCP4586DSQ28T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4586DSQ28T1G 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 NCP4586DSQ28T1G?
For technical support, including NCP4586DSQ28T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4586DSQ28T1G requirements.
6.How does Aetrix verify that NCP4586DSQ28T1G is sourced from the original manufacturer or authorized distributors?
All NCP4586DSQ28T1G 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 NCP4586DSQ28T1G meets industry standards.
7.What is the process for return or replacement of NCP4586DSQ28T1G?
All NCP4586DSQ28T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP4586DSQ28T1G, 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 NCP4586DSQ28T1G part is unused and in its original packaging.
Return procedure for NCP4586DSQ28T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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