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

onsemi NCP585LSAN12T1G

Name: NCP585LSAN12T1G
Brand: onsemi
SKU: NCP585LSAN12T1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NCP585LSAN12T1G

Manufacturer:: onsemi

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

Package:: 6-VQFN Exposed Pad

Datasheet:: NCP585LSAN12T1G.pdf

Description:: IC REG LINEAR 1.2V 300MA 6HSON

Quantity:: RFQ Add To RFQ list

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Product details

Overview

NCP585LSAN12T1G from onsemi is a tri-mode 300 mA CMOS low-dropout regulator with active-low enable, fixed 1.2 V output, and HSON-6 package. It delivers ±2% output accuracy, 310 mV dropout at 300 mA (LP mode), and ultra-low 3.5 µA quiescent current in low-power mode-ideal for battery-powered portable instrumentation requiring stable voltage under dynamic load and shutdown conditions.

For engineers reviewing the NCP585LSAN12T1G datasheet, pinout, applications, or equivalent options, this page provides verified technical context, tri-mode operation details (CE/FT/LP), HSON-6 thermal performance data, and validated alternatives for portable power management designs where input range (1.4–6.0 V), ripple rejection (70 dB @ 1 kHz), and auto-discharge capability are critical selection criteria.

Technical Context

The NCP585LSAN12T1G implements a CMOS-based LDO architecture with three configurable operating modes: Chip Enable (CE), Fast Transient (FT), and Low Power (LP), selected via the ECO pin. Its internal reference and error amplifier maintain regulation across −40°C to +85°C ambient temperature.

Mode switching is hardware-controlled: ECO = GND enables LP mode (3.5 µA I_q, 40 mV load regulation); ECO = V_in activates FT mode (80 µA I_q, 15 mV load regulation). The active-low CE pin supports system-level power sequencing and deep shutdown (0.1 µA I_SD).

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 1.2 V ±2% (typical accuracy over line/load/temp)
Max Output Current	300 mA continuous-supports peak loads in handheld cameras without thermal shutdown
Dropout Voltage	310 mV @ 300 mA (LP mode, V_OUT = 1.2 V)-enables operation from single-cell Li-ion down to 1.51 V input
Quiescent Current	3.5 µA (LP mode, V_OUT < 1.6 V)-extends battery life in always-on sensor nodes
Ripple Rejection	70 dB @ 1 kHz (I_OUT = 50 mA)-suppresses switching noise from upstream DC-DC converters
PSRR Bandwidth	65 dB @ 10 kHz-maintains clean output under high-frequency digital noise
Shutdown Current	0.1 µA @ V_CE = V_IN-ensures negligible drain during system sleep states

Pinout & Package

HSON-6 (Case 506AE) surface-mount package with exposed thermal pad; 2.9 mm × 3.0 mm footprint, 0.95 mm pitch, 0.15–0.25 mm height; optimized for PCB thermal dissipation in space-constrained portable designs.

Pin/Terminal	Circuit Role	Design Meaning
1	V_IN	Input supply rail (1.4–6.0 V); requires 1.0 µF ceramic decoupling adjacent to pin
2	GND	Power ground reference; connects to exposed thermal pad for junction-to-board heat transfer
3	CE	Active-low chip enable-driving low disables regulator and reduces I_q to 0.1 µA
4	V_OUT	Regulated 1.2 V output; requires 1.0 µF low-ESR capacitor placed within 2 mm of pin
5	ECO	Mode control-tie to GND for LP mode (ultra-low I_q), tie to V_IN for FT mode (fast transient response)
6	NC	No-connect; electrically isolated-must remain unconnected per datasheet

Key Features

Feature	Design Value
Tri-mode operation	Hardware-selectable CE/FT/LP modes via ECO pin-enables dynamic trade-off between efficiency and transient response
Fold-back current limiting	50 mA short-circuit current limit-prevents thermal runaway during output faults without external components
Auto-discharge support	Internal N-channel discharge path activated when CE = low-ensures rapid V_OUT decay for safe power-down sequencing
Low temperature drift	100 ppm/°C output voltage drift-maintains accuracy across industrial temperature range without calibration
Pb-free construction	RoHS-compliant HSON-6 package-meets global environmental compliance requirements for consumer electronics

Applications

Portable Medical Sensors	Handheld Test Equipment
Use Scenario: Battery-powered glucose meter with real-time analog front-end and Bluetooth LE radio. IC Role / Device Role / Timing Role: Primary 1.2 V supply for precision ADC and RF transceiver ICs. Use Value: LP mode extends 200 mAh coin-cell life by >3× versus standard LDOs; 70 dB PSRR prevents RF noise coupling into measurement path.	Use Scenario: Pocket-sized multimeter with LCD display, microcontroller, and analog signal conditioning. IC Role / Device Role / Timing Role: Stable 1.2 V rail for MCU core and precision op-amps during battery voltage sag. Use Value: 310 mV dropout allows full functionality down to 1.51 V input; fast transient response maintains regulation during display backlight pulses.
Digital Camcorders	Wearable Health Monitors
Use Scenario: HD camcorder using CMOS image sensor and video encoder ASIC. IC Role / Device Role / Timing Role: Dedicated 1.2 V supply for image sensor interface logic and memory I/O. Use Value: FT mode reduces load regulation error to 15 mV during burst read/write cycles; ECO pin enables synchronized power gating with sensor frame timing.	Use Scenario: ECG patch with ultra-low-power MCU, analog front-end, and BLE SoC. IC Role / Device Role / Timing Role: Always-on 1.2 V supply for analog signal chain during sleep mode. Use Value: 3.5 µA I_q in LP mode reduces average current draw below 5 µA-enabling multi-week operation on 30 mAh battery.

Portable Medical Sensors

Handheld Test Equipment

Use Scenario: Battery-powered glucose meter with real-time analog front-end and Bluetooth LE radio.

IC Role / Device Role / Timing Role: Primary 1.2 V supply for precision ADC and RF transceiver ICs.

Use Value: LP mode extends 200 mAh coin-cell life by >3× versus standard LDOs; 70 dB PSRR prevents RF noise coupling into measurement path.

Use Scenario: Pocket-sized multimeter with LCD display, microcontroller, and analog signal conditioning.

IC Role / Device Role / Timing Role: Stable 1.2 V rail for MCU core and precision op-amps during battery voltage sag.

Use Value: 310 mV dropout allows full functionality down to 1.51 V input; fast transient response maintains regulation during display backlight pulses.

Digital Camcorders

Wearable Health Monitors

Use Scenario: HD camcorder using CMOS image sensor and video encoder ASIC.

IC Role / Device Role / Timing Role: Dedicated 1.2 V supply for image sensor interface logic and memory I/O.

Use Value: FT mode reduces load regulation error to 15 mV during burst read/write cycles; ECO pin enables synchronized power gating with sensor frame timing.

Use Scenario: ECG patch with ultra-low-power MCU, analog front-end, and BLE SoC.

IC Role / Device Role / Timing Role: Always-on 1.2 V supply for analog signal chain during sleep mode.

Use Value: 3.5 µA I_q in LP mode reduces average current draw below 5 µA-enabling multi-week operation on 30 mAh battery.

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1804T-1202E/MB	Fixed 1.2 V, 150 mA max, SOT-23-5; no tri-mode; 120 mV dropout @ 150 mA	Limited current capacity and no LP/FT mode switching-suitable only for low-power sub-circuits	Select when board space is constrained and 150 mA suffices; avoid for 300 mA loads or dynamic mode control needs.
Torex XC6219B122MR-G	Fixed 1.2 V, 300 mA, SOT-25; CE pin only (no ECO); 250 mV dropout @ 300 mA; 1 µA I_q	Lacks tri-mode operation and auto-discharge-requires external MOSFET for fast V_OUT discharge	Choose for lowest quiescent current in simple enable/disable systems; not suitable for applications requiring hardware-selectable transient performance.

Compared with MCP1804T-1202E/MB and XC6219B122MR-G, the NCP585LSAN12T1G uniquely combines 300 mA capability, tri-mode configurability, and integrated auto-discharge in HSON-6-making it the only option among the three that supports both ultra-low-power sleep and high-speed load transient recovery without external components.

Availability

NCP585LSAN12T1G is available at Aetrix Electronics and suitable for portable medical sensors, handheld test equipment, digital camcorders, and wearable health monitors requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for NCP585LSAN12T1G 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 NCP585 series belongs to onsemi's precision LDO portfolio, designed specifically for portable battery-powered systems demanding tight output tolerance, ultra-low quiescent current, and robust transient response across wide input voltage and temperature ranges.

FAQ

What is the maximum input voltage rating for the NCP585LSAN12T1G?

The NCP585LSAN12T1G has an absolute maximum input voltage rating of 6.5 V. Recommended operating input voltage is 1.4 V to 6.0 V. Exceeding 6.5 V may cause permanent damage. This rating applies to both V_IN and the CE pin, while the ECO pin tolerates −0.3 V to 6.5 V. The NCP585LSAN12T1G must be operated within these limits to ensure reliability and specified performance.

How does the ECO pin affect the NCP585LSAN12T1G's quiescent current and load regulation?

The ECO pin selects between Low Power (LP) and Fast Transient (FT) modes: tying ECO to GND enables LP mode (3.5 µA I_q, 40 mV load regulation), while tying ECO to V_IN activates FT mode (80 µA I_q, 15 mV load regulation). These values are measured at V_OUT = 1.2 V. The NCP585LSAN12T1G's dual-mode architecture allows designers to optimize for battery life or dynamic performance without changing the bill of materials.

Does the NCP585LSAN12T1G include overcurrent protection, and what is its trip threshold?

Yes, the NCP585LSAN12T1G features fold-back current limiting with a typical short-circuit output current of 50 mA. This protection activates when V_OUT drops near 0 V, reducing output current to limit power dissipation and prevent thermal damage. The NCP585LSAN12T1G does not latch off-it recovers automatically when the overload condition is removed. No external components are required to implement this protection.

What is the recommended output capacitor for stable operation of the NCP585LSAN12T1G?

The NCP585LSAN12T1G is optimized for use with a 1.0 µF ceramic capacitor on the V_OUT pin, placed within 2 mm of the device with minimal trace length. Low-ESR capacitors improve PSRR and transient response. Stability analysis (Figure 32–35) confirms stable operation across 0.1 µF to 100 µF with appropriate ESR ranges. The NCP585LSAN12T1G does not require tantalum or electrolytic capacitors for stability.

Is the NCP585LSAN12T1G compatible with lead-free reflow soldering processes?

Yes, the NCP585LSAN12T1G is Pb-free and qualified for standard lead-free reflow profiles per JEDEC J-STD-020. Its HSON-6 package (Case 506AE) supports peak temperatures up to 260°C for 30 seconds. The exposed thermal pad enhances thermal transfer during soldering and in-system operation. The NCP585LSAN12T1G meets RoHS Directive 2011/65/EU and is marked with the "Pb-Free" designation in its ordering information.

NCP585LSAN12T1G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: 6-VQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 6V

Voltage - Output (Min/Fixed):: 1.2V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.75V @ 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)

NCP585LSAN12T1G FAQ

1.How can I place an order for NCP585LSAN12T1G through Aetrix?

Please submit a Request for Quotation (RFQ) for NCP585LSAN12T1G 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 NCP585LSAN12T1G reliable?

The price and inventory of NCP585LSAN12T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP585LSAN12T1G is usually 5 days.

3.What payment methods are accepted for NCP585LSAN12T1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP585LSAN12T1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NCP585LSAN12T1G?

NCP585LSAN12T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NCP585LSAN12T1G 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 NCP585LSAN12T1G?

For technical support, including NCP585LSAN12T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP585LSAN12T1G requirements.

6.How does Aetrix verify that NCP585LSAN12T1G is sourced from the original manufacturer or authorized distributors?

All NCP585LSAN12T1G 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 NCP585LSAN12T1G meets industry standards.

7.What is the process for return or replacement of NCP585LSAN12T1G?

All NCP585LSAN12T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP585LSAN12T1G, 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 NCP585LSAN12T1G part is unused and in its original packaging.

Return procedure for NCP585LSAN12T1G:

1.Submit a request within 90 days.

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

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