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onsemi NCP4586DSN28T1G
- Part No.:
- NCP4586DSN28T1G
- Manufacturer:
- onsemi
- Package:
- SC-74A, SOT-753
- Datasheet:
-
NCP4586DSN28T1G.pdf
- Description:
- IC REG LINEAR 2.8V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,635
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Product details
Overview
NCP4586DSN28T1G from onsemi is a CMOS low-dropout linear regulator delivering 150 mA output with 2.8 V fixed output voltage, 320 mV typical dropout at full load, ±1% output accuracy (at TJ = 25°C), and 80 dB PSRR at 1 kHz - designed for stable power in space-constrained portable electronics such as MP3 players and camcorders.
For engineers reviewing the NCP4586DSN28T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its enable-high logic configuration, UDFN/SC-82AB/SOT-23-5 package compatibility, low-noise 30 µVRMS performance, and guaranteed stability with 0.47 µF ceramic output capacitors.
Technical Context
The NCP4586DSN28T1G implements a CMOS-based LDO architecture with internal reference, error amplifier, and pass transistor - optimized for low quiescent current (38–58 µA) and fast transient response under dynamic load conditions. Its enable-high control pin (CE) activates regulation when pulled to VIN, and it features built-in current fold-back protection and thermal shutdown.
This variant belongs to the D-series (Enable High + Auto-Discharge), integrating an internal N-channel discharge transistor between VOUT and GND to rapidly deplete output capacitance during shutdown - critical for systems requiring controlled power sequencing and leakage minimization in battery-backed circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±1% (at TJ = 25°C); ensures precise biasing for 2.8 V logic rails and analog sensors. |
| Max Output Current | 150 mA continuous; supports moderate-power peripherals like audio codecs or small displays. |
| Dropout Voltage | 320 mV typical at 150 mA; enables operation down to VIN = 3.12 V, extending battery runtime in single-cell Li-ion or alkaline systems. |
| 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); suitable for noise-sensitive analog circuitry including ADC references and RF front-ends. |
| Quiescent Current | 38–58 µA; minimizes standby power loss in always-on subsystems like real-time clocks or wake-up controllers. |
| Input Voltage Range | 1.7 V to 6.5 V; compatible with single-cell Li-ion (2.7–4.2 V), LiFePO₄ (2.0–3.6 V), and dual-alkaline (2.4–3.2 V) sources. |
Pinout & Package
The NCP4586DSN28T1G is packaged in Pb-free SOT-23-5 (Case 1212), a 5-pin surface-mount package measuring 2.9 × 2.8 × 1.3 mm with gull-wing leads. Thermal resistance RJA is 238°C/W, supporting up to 420 mW power dissipation at TA = 85°C.
| 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 for line transient immunity. |
| GND | Power ground reference | Common return path for input/output currents; must be low-impedance and tied directly to PCB ground plane. |
| CE | Chip enable (active-high) | Pull to VIN to enable regulation; pull to GND to disable - triggers auto-discharge of VOUT via internal N-ch FET. |
| VOUT | Regulated output | Delivers stable 2.8 V; requires 470 nF or larger ceramic capacitor at pin for loop stability and load transient response. |
| NC | No connection | Unbonded pin; must remain floating - no routing or soldering permitted to avoid parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge function | Internal N-channel transistor discharges VOUT to GND within microseconds upon CE deactivation - eliminates residual voltage that could cause latch-up in downstream logic. |
| Ultra-low noise output | 30 µVRMS over 10 Hz–100 kHz band - avoids modulation artifacts in audio paths and preserves SNR in precision analog signal chains. |
| Capacitor-stable design | Stable with ≥0.47 µF ceramic output capacitors (ESR < 100 mΩ); eliminates need for costly tantalum or polymer alternatives. |
| High PSRR across frequency | 80 dB at 1 kHz and >60 dB up to 100 kHz - maintains clean output despite ripple from switching regulators or noisy system buses. |
| Low dropout at full load | 320 mV typical at 150 mA - enables use with input voltages as low as 3.12 V while sustaining 2.8 V output, maximizing usable battery capacity. |
Applications
| MP3 Player Power Management | Digital Camera Sensor Biasing |
|---|---|
|
Use Scenario: Providing clean, regulated 2.8 V to audio DACs and headphone amplifiers in portable music players. IC Role / Device Role: Primary low-noise voltage regulator for analog audio signal chain. Use Value: 30 µVRMS output noise prevents audible hiss; 80 dB PSRR rejects noise from display backlight drivers and USB interface switching. |
Use Scenario: Supplying stable 2.8 V to CMOS image sensor analog front-end and timing circuitry. IC Role / Device Role: Precision bias rail generator ensuring consistent pixel response and low dark current. Use Value: ±1% output accuracy and ±20 ppm/°C tempco maintain sensor gain calibration across −40°C to +85°C operating range. |
| Camcorder Audio Subsystem | Portable Medical Monitor Front-End |
|
Use Scenario: Powering microphone preamplifiers and analog-to-digital converters in handheld video recorders. IC Role / Device Role: Low-noise, fast-transient LDO for real-time audio capture circuitry. Use Value: Load transient recovery time < 10 µs (IOUT step 1–150 mA) prevents clipping or distortion during sudden audio peaks. |
Use Scenario: Delivering 2.8 V to ECG/EEG analog signal conditioning stages in battery-powered patient monitors. IC Role / Device Role: Safety-critical analog supply with guaranteed stability and low drift. Use Value: 238°C/W thermal resistance and −40°C to +85°C ambient rating support reliable operation in uncontrolled clinical environments. |
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 max output, 1.6 µA quiescent current, no auto-discharge, SOT-23-3 package (3-pin, no CE) | Lacks enable control and output discharge; suited only for always-on, ultra-low-IQ applications | Select when minimal standby current outweighs need for sequencing control and discharge capability. |
| Torex XC6206P282MR-G | 150 mA, 2.8 V fixed, 3 µA IQ, no CE pin, SOT-23-3, no auto-discharge | Pin count and footprint incompatible; no enable or discharge functionality - requires external MOSFET for sequencing | Choose only if board redesign accommodates 3-pin layout and external discharge circuitry is acceptable. |
Compared with MCP1700T-2802E/TT and XC6206P282MR-G, the NCP4586DSN28T1G uniquely integrates enable-high logic and auto-discharge in a 5-pin SOT-23 package - enabling compact, sequenced power delivery without external components, while maintaining competitive noise and PSRR performance.
Availability
NCP4586DSN28T1G is available at Aetrix Electronics and suitable for portable medical monitors, digital cameras, and MP3 players requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for NCP4586DSN28T1G 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 high-performance silicon solutions for automotive, industrial, cloud, and IoT applications.
The NCP4586DSN28T1G belongs to onsemi's NCP4586 family of low-noise, low-dropout regulators - engineered specifically for battery-powered portable devices where size, efficiency, and signal integrity are critical design constraints.
FAQ
What is the output voltage tolerance of the NCP4586DSN28T1G over temperature?
The NCP4586DSN28T1G delivers ±1.5% output voltage accuracy across the full operating ambient temperature range of −40°C to +85°C for VOUT > 2 V. At 2.8 V nominal output, this corresponds to a guaranteed 2.758 V to 2.842 V window under all specified conditions, verified per onsemi's Electrical Characteristics table on page 4 of the datasheet.
Does the NCP4586DSN28T1G require an external capacitor on the CE pin for noise immunity?
No, the NCP4586DSN28T1G does not require an external capacitor on the CE pin. Its enable input has internal hysteresis and is rated for 2000 V HBM ESD protection; however, for systems with high EMI exposure, a 100 pF ceramic capacitor from CE to GND may be added - but this is not specified in the datasheet and is not necessary for functional operation of the NCP4586DSN28T1G.
Can the NCP4586DSN28T1G operate with a 1.5 V input supply?
No, the NCP4586DSN28T1G cannot operate with a 1.5 V input supply. Its minimum operating input voltage is 1.7 V per the Absolute Maximum Ratings table (page 3) and Electrical Characteristics (page 4). At 2.8 V output, the minimum viable input is 3.12 V (2.8 V + 320 mV dropout), making it incompatible with sub-2 V sources such as NiMH or partially discharged alkaline cells.
What is the purpose of the NC pin on the NCP4586DSN28T1G SOT-23-5 package?
The NC (No Connection) pin on the NCP4586DSN28T1G is an unconnected, non-bonded terminal in the SOT-23-5 package. It serves no electrical function and must remain electrically floating - no trace, pad, or solder connection should be made to it, as doing so may introduce parasitic coupling or compromise thermal performance of the NCP4586DSN28T1G.
How does the auto-discharge feature of the NCP4586DSN28T1G behave during shutdown?
When the CE pin is pulled low (disable state), the NCP4586DSN28T1G activates an internal N-channel transistor between VOUT and GND, discharging the output capacitor rapidly. Typical discharge time is under 100 µs for a 4.7 µF capacitor, as shown in Figure 39–41 of the datasheet - ensuring fast, deterministic power-down without external circuitry and preventing back-powering of upstream circuitry via the NCP4586DSN28T1G.
NCP4586DSN28T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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:
- SOT-23-5
NCP4586DSN28T1G FAQ
1.How can I place an order for NCP4586DSN28T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4586DSN28T1G 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 NCP4586DSN28T1G reliable?
The price and inventory of NCP4586DSN28T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4586DSN28T1G is usually 5 days.
3.What payment methods are accepted for NCP4586DSN28T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4586DSN28T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP4586DSN28T1G?
NCP4586DSN28T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4586DSN28T1G 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 NCP4586DSN28T1G?
For technical support, including NCP4586DSN28T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4586DSN28T1G requirements.
6.How does Aetrix verify that NCP4586DSN28T1G is sourced from the original manufacturer or authorized distributors?
All NCP4586DSN28T1G 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 NCP4586DSN28T1G meets industry standards.
7.What is the process for return or replacement of NCP4586DSN28T1G?
All NCP4586DSN28T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP4586DSN28T1G, 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 NCP4586DSN28T1G part is unused and in its original packaging.
Return procedure for NCP4586DSN28T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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