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onsemi NCP4586DSN18T1G
- Part No.:
- NCP4586DSN18T1G
- Manufacturer:
- onsemi
- Package:
- SC-74A, SOT-753
- Datasheet:
-
NCP4586DSN18T1G.pdf
- Description:
- IC REG LINEAR 1.8V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,534
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Product details
Overview
NCP4586DSN18T1G from onsemi is a 150 mA, low-noise, low-dropout linear regulator with 1.8 V fixed output, ±1% accuracy at 25°C, 320 mV typical dropout at full load, and 80 dB PSRR at 1 kHz-designed for power-sensitive portable electronics requiring stable, clean bias under variable input conditions.
For engineers reviewing the NCP4586DSN18T1G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, SOT-23-5 terminal mapping, real-world use cases in battery-powered imaging and audio subsystems, and two validated alternative regulators with documented functional trade-offs.
Technical Context
The NCP4586DSN18T1G implements a CMOS-based LDO architecture with internal voltage reference, error amplifier, and pass transistor-optimized for ultra-low quiescent current (38–58 µA) and high ripple rejection across 10 Hz–100 kHz bandwidth. Its enable pin (CE) is active-high and includes an internal pull-down current source (0.4 µA), supporting controlled power sequencing.
It operates across 1.7–6.5 V input range while maintaining 1.8 V output with ±1% initial accuracy and ±20 ppm/°C temperature coefficient. Dropout voltage is 460 mV typ. at 150 mA (for 1.8 V output), and stability is guaranteed with ≥0.47 µF ceramic output capacitance-no ESR requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±1% (at TJ = 25°C, VOUT > 2 V spec applies; actual tolerance is ±18 mV) |
| Max Output Current | 150 mA continuous-supports logic rails and analog sensor bias without thermal derating in SOT-23-5 at TA ≤ 60°C |
| Dropout Voltage | 460 mV typ. at 150 mA-enables operation from single Li-ion (3.0 V min) or dual alkaline (3.2 V min) sources |
| PSRR | 80 dB at 1 kHz-rejects switching noise from DC-DC converters feeding its input rail |
| Output Noise | 30 µVrms (10 Hz–100 kHz)-suitable for RF biasing and precision ADC reference supplies |
| Quiescent Current | 38–58 µA-minimizes standby drain in always-on subsystems like Bluetooth LE receivers |
| Enable Threshold | VCEH = 1.0 V min-compatible with 1.8 V GPIO without level-shifting |
Pinout & Package
SOT-23-5 package (Case 1212), 2.7 mm × 3.1 mm footprint, exposed pad not present, Pb-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input supply connection | Accepts 1.7–6.5 V; requires 470 nF ceramic decoupling placed adjacent to pin |
| 2 (GND) | Power ground reference | Common return for input/output capacitors and load; must be low-impedance PCB plane |
| 3 (CE) | Active-high chip enable | Pulled low internally (0.4 µA); tie to VIN to enable, GND to disable; no external pull-up needed |
| 5 (VOUT) | Regulated output | Delivers 1.8 V ±1%; requires 470 nF ceramic capacitor directly at pin for stability |
| 4 (NC) | No connection | Not bonded; must remain unconnected-no routing or copper fill allowed |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise output | 30 µVrms enables clean power for RF transceivers and high-resolution SAR ADCs |
| Low dropout at full load | 460 mV typ. allows >90% efficiency when input is 2.5 V, critical for battery runtime extension |
| Stable with small ceramics | Guaranteed stability with ≥0.47 µF X5R/X7R ceramic-eliminates need for larger, costly tantalum caps |
| High PSRR across frequency | 80 dB @ 1 kHz and >60 dB up to 100 kHz suppresses noise from PMIC switchers sharing same input rail |
| Auto-discharge disabled | This DSN variant lacks auto-discharge transistor-output holds voltage after disable, simplifying power sequencing |
Applications
| Portable Imaging Sensors | Wireless Audio Receivers |
|---|---|
Use Scenario: Powering CMOS image sensor analog front-end and PLL clock generator in compact action cameras. IC Role / Device Role / Timing Role: Provides ultra-low-noise 1.8 V bias for pixel readout circuitry and reference voltage for timing controller. Use Value: 30 µVrms noise prevents fixed-pattern noise in captured images; 80 dB PSRR blocks interference from Wi-Fi/BT coexistence circuits. |
Use Scenario: Supplying 1.8 V to Bluetooth LE audio codec IC and MEMS microphone preamp in true wireless earbuds. IC Role / Device Role / Timing Role: Delivers stable, low-quiescent-power rail for always-listening voice trigger circuitry. Use Value: 38–58 µA IQ extends battery life during standby; 460 mV dropout enables operation down to 2.26 V battery voltage. |
| Industrial Handheld Scanners | Medical Point-of-Care Monitors |
Use Scenario: Regulating 1.8 V for laser diode driver control logic and barcode decode ASIC in ruggedized scanners. IC Role / Device Role / Timing Role: Supplies clean, sequenced power to digital core and interface peripherals during cold start. Use Value: Active-high CE pin synchronizes with MCU GPIO; ±1% output accuracy ensures consistent decode timing across temperature. |
Use Scenario: Biasing low-power ECG front-end amplifiers and display driver ICs in battery-operated patient monitors. IC Role / Device Role / Timing Role: Provides isolated, low-noise 1.8 V rail for analog signal chain-critical for sub-µV biopotential measurement. Use Value: 20 ppm/°C tempco maintains gain stability over operating range (−40°C to +85°C); no external trimming required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1802E/TT | 150 mA, 1.8 V, 6 µA IQ, but only 65 dB PSRR @ 1 kHz and 40 µVrms noise | Lacks noise performance for RF/audio; better for ultra-low-power sleep modes where PSRR is secondary | Choose when standby current is priority over noise/PSRR; verify stability with 1 µF ceramic (MCP1700 requires higher COUT) |
| Torex XC6206P182MR-G | 150 mA, 1.8 V, 35 µA IQ, 70 dB PSRR @ 1 kHz, 45 µVrms noise, SC-82AB only | Higher noise limits use in precision analog; SC-82AB footprint differs from SOT-23-5-requires layout change | Consider if board space permits SC-82AB; confirm thermal margin-RJA = 263°C/W vs. NCP4586DSN18T1G's 238°C/W |
Compared with MCP1700T-1802E/TT and XC6206P182MR-G, the NCP4586DSN18T1G delivers superior noise and PSRR at identical output current, with tighter output accuracy and lower thermal resistance in SOT-23-5-making it optimal for noise-sensitive, thermally constrained portable designs.
Availability
NCP4586DSN18T1G is available at Aetrix Electronics and suitable for battery-powered equipment, portable communication devices, and medical point-of-care monitors requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for NCP4586DSN18T1G 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, high-performance silicon solutions for automotive, industrial, cloud, and consumer markets.
The NCP4586DSN18T1G belongs to the NCP4586 family of low-noise, low-IQ LDOs-engineered specifically for portable electronics where battery life, signal integrity, and small-footprint power management are critical design constraints.
FAQ
What is the maximum input voltage rating for the NCP4586DSN18T1G?
The NCP4586DSN18T1G has an absolute maximum input voltage of 7 V. Operation beyond this rating risks permanent damage. For reliable long-term use, the recommended operating input range is 1.7 V to 6.5 V-ensuring proper regulation, thermal safety, and specified PSRR/noise performance across temperature.
Does the NCP4586DSN18T1G include an auto-discharge function?
No, the NCP4586DSN18T1G does not include auto-discharge. It is the "D" version in naming convention (per ordering table), but the DSN suffix indicates SOT-23-5 packaging-not discharge functionality. Only the "D" variants in SC-82AB (e.g., NCP4586DSQ18T1G) and UDFN4 packages integrate the internal discharge transistor. This part holds output voltage after disable.
Can the NCP4586DSN18T1G operate stably with a 1 µF ceramic output capacitor?
Yes-the NCP4586DSN18T1G is stable with output capacitances ≥0.47 µF, including 1 µF X5R/X7R ceramics. Larger values improve transient response and reduce output ripple, but do not affect stability margins. Avoid high-ESR capacitors like standard aluminum electrolytics, which may cause oscillation.
What is the thermal resistance (RJA) of the NCP4586DSN18T1G in its SOT-23-5 package?
The NCP4586DSN18T1G in SOT-23-5 (Case 1212) has a junction-to-air thermal resistance (RJA) of 238°C/W under standard JEDEC test conditions (2s2p board). Actual board-level RJA depends on copper area, layer count, and airflow-but this value confirms suitability for 150 mA loads up to +60°C ambient without heatsinking.
Is the NCP4586DSN18T1G pin-compatible with other NCP4586 variants in SOT-23-5?
Yes-all NCP4586 variants in SOT-23-5 (e.g., NCP4586DSN12T1G, NCP4586DSN28T1G) share identical pinout: Pin 1 = VIN, Pin 2 = GND, Pin 3 = CE, Pin 4 = NC, Pin 5 = VOUT. Output voltage is set internally; no external resistors are used. Swapping variants requires only firmware or schematic update to match voltage requirement.
NCP4586DSN18T1G 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):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.68V @ 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
NCP4586DSN18T1G FAQ
1.How can I place an order for NCP4586DSN18T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4586DSN18T1G 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 NCP4586DSN18T1G reliable?
The price and inventory of NCP4586DSN18T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4586DSN18T1G is usually 5 days.
3.What payment methods are accepted for NCP4586DSN18T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4586DSN18T1G transactions.
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4.How is shipping managed for NCP4586DSN18T1G?
NCP4586DSN18T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4586DSN18T1G 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 NCP4586DSN18T1G?
For technical support, including NCP4586DSN18T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4586DSN18T1G requirements.
6.How does Aetrix verify that NCP4586DSN18T1G is sourced from the original manufacturer or authorized distributors?
All NCP4586DSN18T1G 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 NCP4586DSN18T1G meets industry standards.
7.What is the process for return or replacement of NCP4586DSN18T1G?
All NCP4586DSN18T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP4586DSN18T1G, 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 NCP4586DSN18T1G part is unused and in its original packaging.
Return procedure for NCP4586DSN18T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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