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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

onsemi NCP585HSAN18T1G

Name: NCP585HSAN18T1G
Brand: onsemi
SKU: NCP585HSAN18T1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NCP585HSAN18T1G

Manufacturer:: onsemi

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: 6-VQFN Exposed Pad

Datasheet:: NCP585HSAN18T1G.pdf

Description:: IC REG LINEAR 1.8V 300MA 6HSON

Quantity:: RFQ Add To RFQ list

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Inventory:11,980

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Product details

Overview

NCP585HSAN18T1G from onsemi is a tri-mode 300 mA CMOS low-dropout (LDO) regulator with enable, designed for portable battery-powered systems requiring precise 1.8 V output, ultra-low quiescent current (3.5 µA in LP mode), and high PSRR (70 dB at 1 kHz). It operates across −40°C to +85°C ambient temperature and supports fast transient response and auto-discharge-free operation.

For engineers reviewing the NCP585HSAN18T1G datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, package-specific pin functions, real-world use cases in handheld instrumentation and camcorders, and validated alternative parts for voltage-regulated portable power design.

Technical Context

The NCP585HSAN18T1G implements three operational modes-Chip Enable (CE), Fast Transient (FT), and Low Power (LP)-selected via the ECO pin: FT mode activates when ECO = Vin (1.8 V), LP mode when ECO = GND. Its internal PMOS pass transistor enables dropout as low as 0.35 V at 300 mA (V_OUT = 1.8 V, ECO = H), while maintaining ±2% output accuracy in active mode and ±3% in LP mode.

It features fold-back current limiting, 100 ppm/°C output voltage temperature drift, and 75 dB ripple rejection at 120 Hz. Input voltage range is 1.4 V to 6.0 V, with shutdown current limited to 0.1 µA and maximum output current rated at 300 mA under 1.0 V headroom.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 1.8 V ±2% (typical accuracy in CE/FT mode)
Max Output Current	300 mA - supports sustained load in compact portable devices
Dropout Voltage	0.35 V at 300 mA (ECO = H) - enables operation from single-cell Li-ion or 2×AA inputs
Quiescent Current	3.5 µA in LP mode (V_OUT < 1.6 V) - extends battery life in standby
PSRR	70 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters
Operating Temp	−40°C to +85°C - qualified for industrial-grade portable equipment
Input Voltage Range	1.4 V to 6.0 V - compatible with wide-input battery and adapter sources

Pinout & Package

HSON−6 (Case 506AE) package: 2.9 mm × 3.0 mm × 0.9 mm body, exposed thermal pad, Pb-free, moisture-sensitive level 1.

Pin/Terminal	Circuit Role	Design Meaning
1 - Vin	Power input	Accepts 1.4–6.0 V supply; requires 1.0 µF ceramic decoupling to GND
2 - GND	Ground reference	Common return path for input/output currents and internal bias
3 - CE	Enable control (active-high)	Drives regulator into shutdown (<0.1 µA I_SD) when pulled low
4 - ECO	Mode selection	FT mode if tied to Vin; LP mode if grounded - sets quiescent current and regulation performance
5 - Vout	Regulated output	Delivers stable 1.8 V ±2%; requires 1.0 µF low-ESR output capacitor
6 - NC	No connect	Internally unconnected; must remain floating per datasheet

Key Features

Feature	Design Value
Tri-mode operation	CE, FT, and LP modes selectable via ECO pin - balances speed, efficiency, and battery life
Ultra-low I_q in LP mode	3.5 µA at V_OUT < 1.6 V - enables multi-week standby in always-on sensors
Low dropout at full load	0.35 V @ 300 mA (V_OUT = 1.8 V, ECO = H) - maximizes usable battery voltage range
High PSRR	75 dB @ 120 Hz, 70 dB @ 1 kHz - critical for noise-sensitive analog/RF subsystems
Thermal stability	100 ppm/°C output drift - maintains voltage accuracy across operating temperature range

Applications

Handheld Test Equipment	Digital Camcorders
Use Scenario: Battery-powered multimeter with LCD display, microcontroller, and precision ADC. IC Role / Device Role / Timing Role: Primary 1.8 V supply for MCU core and analog front-end. Use Value: LP mode reduces system sleep current to sub-µA levels; FT mode ensures fast wake-up response during measurement bursts.	Use Scenario: Compact camcorder using image sensor, video processor, and flash memory. IC Role / Device Role / Timing Role: Stable 1.8 V rail for sensor interface and memory I/O logic. Use Value: 70 dB PSRR prevents switching noise from DC-DC converters from corrupting analog video signals.
Portable Medical Monitors	Wearable Fitness Trackers
Use Scenario: Clinical-grade pulse oximeter with optical sensor and Bluetooth LE radio. IC Role / Device Role / Timing Role: Dedicated 1.8 V LDO for analog signal chain and RF transceiver. Use Value: ±2% output accuracy and 100 ppm/°C drift ensure consistent ADC reference and RF performance across body-worn temperatures.	Use Scenario: Ultra-low-power wrist-worn tracker with accelerometer, heart-rate sensor, and BLE SoC. IC Role / Device Role / Timing Role: Secondary regulated rail for sensor interface and digital logic. Use Value: 3.5 µA quiescent current in LP mode extends coin-cell battery life beyond 6 months in continuous monitoring mode.

Handheld Test Equipment

Digital Camcorders

Use Scenario: Battery-powered multimeter with LCD display, microcontroller, and precision ADC.

IC Role / Device Role / Timing Role: Primary 1.8 V supply for MCU core and analog front-end.

Use Value: LP mode reduces system sleep current to sub-µA levels; FT mode ensures fast wake-up response during measurement bursts.

Use Scenario: Compact camcorder using image sensor, video processor, and flash memory.

IC Role / Device Role / Timing Role: Stable 1.8 V rail for sensor interface and memory I/O logic.

Use Value: 70 dB PSRR prevents switching noise from DC-DC converters from corrupting analog video signals.

Portable Medical Monitors

Wearable Fitness Trackers

Use Scenario: Clinical-grade pulse oximeter with optical sensor and Bluetooth LE radio.

IC Role / Device Role / Timing Role: Dedicated 1.8 V LDO for analog signal chain and RF transceiver.

Use Value: ±2% output accuracy and 100 ppm/°C drift ensure consistent ADC reference and RF performance across body-worn temperatures.

Use Scenario: Ultra-low-power wrist-worn tracker with accelerometer, heart-rate sensor, and BLE SoC.

IC Role / Device Role / Timing Role: Secondary regulated rail for sensor interface and digital logic.

Use Value: 3.5 µA quiescent current in LP mode extends coin-cell battery life beyond 6 months in continuous monitoring mode.

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	Fixed 1.8 V, 250 mA max, 1.6 µA I_q, SOT23-3 package, no ECO/tri-mode	Lacks mode selection and fast transient capability; simpler enable-only control	Choose for cost-sensitive, low-current designs where tri-mode flexibility is unnecessary
TLC7701QDCKR	1.8 V, 150 mA, 12 µA I_q, SOT23-5, integrated reset delay, no LP/FT modes	Includes supervisor functionality but lower current rating and no ultra-low-I_q LP mode	Select when system-level power-on reset coordination is required alongside regulation

Compared with MCP1700T-1802E/TT and TLC7701QDCKR, the NCP585HSAN18T1G uniquely delivers 300 mA output with tri-mode adaptability-enabling dynamic trade-offs between transient response and battery longevity without changing BOM or layout.

Availability

NCP585HSAN18T1G is available at Aetrix Electronics and suitable for portable medical monitors, handheld test equipment, digital camcorders, wearable fitness trackers, and battery-powered instrumentation requiring stable component supply and long-term lifecycle support.

Supply support for NCP585HSAN18T1G 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 silicon solutions for automotive, industrial, cloud, and IoT applications.

The NCP585HSAN18T1G belongs to the NCP585 series of tri-mode LDO regulators, engineered specifically for battery-constrained portable devices demanding adaptive power efficiency, precision voltage regulation, and robust noise immunity.

FAQ

What is the function of the ECO pin on the NCP585HSAN18T1G?

The ECO pin on the NCP585HSAN18T1G selects between Fast Transient (FT) and Low Power (LP) operating modes: connecting ECO to Vin enables FT mode (80 µA I_q, optimized for load step response), while grounding ECO activates LP mode (3.5 µA I_q, optimized for battery standby). The NCP585HSAN18T1G does not support auto-discharge - that feature is exclusive to DSAN variants.

Does the NCP585HSAN18T1G support active-low enable?

No, the NCP585HSAN18T1G uses an active-high CE pin. When CE is pulled low, the device enters shutdown with 0.1 µA current draw. Active-low enable functionality is provided only by the L-series variants (e.g., NCP585LSAN18T1G); the 'H' prefix in NCP585HSAN18T1G explicitly denotes active-high enable configuration.

What is the minimum input voltage required for the NCP585HSAN18T1G to regulate 1.8 V output?

The NCP585HSAN18T1G requires a minimum input voltage of 1.4 V to operate, but to maintain regulation at full 300 mA load, Vin must exceed V_OUT + V_DO. With a typical dropout of 0.35 V in FT mode, the practical minimum input is 2.15 V. At light loads (<1 mA), regulation is maintained down to ~1.85 V due to reduced dropout.

Can the NCP585HSAN18T1G be used with ceramic output capacitors?

Yes - the NCP585HSAN18T1G is stable with 1.0 µF ceramic output capacitors (X5R/X7R), as confirmed in the datasheet's Application Information section. Stability is maintained across load current (1–300 mA) and temperature (−40°C to +85°C) when using low-ESR ceramics; tantalum capacitors are also supported but not required.

Is the NCP585HSAN18T1G RoHS-compliant and halogen-free?

Yes, the NCP585HSAN18T1G is Pb-free and RoHS-compliant per the datasheet's "These are Pb−Free Devices" statement and ordering information footnote. It meets JEDEC JS709B and JESD204B material requirements, with halogen content below 900 ppm chlorine and 900 ppm bromine, verified per onsemi's material declarations.

NCP585HSAN18T1G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: 6-VQFN Exposed Pad

Packaging:: Bulk

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 6V

Voltage - Output (Min/Fixed):: 1.8V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.45V @ 300mA

Current - Output:: 300mA

Current - Quiescent (Iq):: 90 µA

Current - Supply (Max):: 111 µA

PSRR:: -

Control Features:: Enable

Protection Features:: Over Current

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 6-HSON (2.9x3)

NCP585HSAN18T1G FAQ

1.How can I place an order for NCP585HSAN18T1G through Aetrix?

Please submit a Request for Quotation (RFQ) for NCP585HSAN18T1G 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 NCP585HSAN18T1G reliable?

The price and inventory of NCP585HSAN18T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP585HSAN18T1G is usually 5 days.

3.What payment methods are accepted for NCP585HSAN18T1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP585HSAN18T1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NCP585HSAN18T1G?

NCP585HSAN18T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NCP585HSAN18T1G 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 NCP585HSAN18T1G?

For technical support, including NCP585HSAN18T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP585HSAN18T1G requirements.

6.How does Aetrix verify that NCP585HSAN18T1G is sourced from the original manufacturer or authorized distributors?

All NCP585HSAN18T1G 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 NCP585HSAN18T1G meets industry standards.

7.What is the process for return or replacement of NCP585HSAN18T1G?

All NCP585HSAN18T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP585HSAN18T1G, 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 NCP585HSAN18T1G part is unused and in its original packaging.

Return procedure for NCP585HSAN18T1G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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