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onsemi NCP584LSN18T1G
- Part No.:
- NCP584LSN18T1G
- Manufacturer:
- onsemi
- Package:
- SC-74A, SOT-753
- Datasheet:
-
NCP584LSN18T1G.pdf
- Description:
- IC REG LINEAR 1.8V 200MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,474
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Product details
Overview
NCP584LSN18T1G from onsemi is a tri-mode CMOS low-dropout (LDO) voltage regulator delivering 1.8 V at up to 200 mA, featuring active-low enable (CE), ECO pin-controlled Fast Transient (FT) and Low Power (LP) modes, 200 mV dropout at 200 mA, ±2% output accuracy in FT mode, and ultra-low 3.5 µA quiescent current in LP mode for portable battery-powered systems.
For engineers reviewing the NCP584LSN18T1G datasheet, pinout, applications, or equivalent options, key selection considerations include its SOT23-5 package, 1.8 V fixed output, tri-mode operation via ECO pin, 6.5 V max input, and trade-offs between transient response (FT mode) and quiescent power (LP mode).
Technical Context
The NCP584LSN18T1G implements a CMOS-based LDO architecture with internal reference, error amplifier, and pass transistor. Its tri-mode functionality is controlled by the ECO pin: grounded for LP mode (3.5 µA Iq, ±3% accuracy), tied to Vin for FT mode (40 µA Iq, ±2% accuracy, 20 mV load regulation), and CE pin enables/disables regulation with 0.1 µA shutdown current.
It supports input voltages from 1.4 V to 6.5 V and maintains stable 1.8 V output across −40°C to +85°C ambient. The device includes fold-back current limiting, 75 dB PSRR at 1 kHz, and 100 ppm/°C output voltage temperature coefficient-enabling precision regulation in space-constrained, low-power portable applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V - eliminates external feedback network; ensures stable rail for 1.8 V logic and memory interfaces. |
| Max Output Current | 200 mA - sufficient for powering microcontrollers, sensors, or RF transceivers in compact portable devices. |
| Dropout Voltage | 200 mV at 200 mA - enables operation with only 2.0 V input, extending battery life in single-cell Li-ion or dual-cell alkaline systems. |
| Quiescent Current | 3.5 µA (LP mode), 40 µA (FT mode) - allows ultra-low-power sleep states without compromising wake-up speed or regulation fidelity. |
| PSRR | 75 dB at 1 kHz - suppresses switching noise from DC-DC converters or digital ICs feeding the same battery source. |
| Accuracy | ±2% (FT mode), ±3% (LP mode) - meets tight tolerance requirements for core voltage rails in modern low-voltage processors and FPGAs. |
| Temp Coefficient | 100 ppm/°C - limits output drift to <±1.8 mV over −40°C to +85°C, critical for precision analog subsystems. |
Pinout & Package
SOT23−5 package (Case 1212), 2.8 mm × 2.5 mm footprint, 1.0–1.3 mm height, Pb-free, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: Vin | Power supply input | Accepts 1.4–6.5 V; requires 1.0 µF tantalum decoupling close to pin for stability. |
| 2: GND | Ground reference | Common return path for input/output currents; must be low-impedance and thermally coupled to PCB ground plane. |
| 3: CE | Active-low chip enable | Pull high (>1.0 V) to enable; pull low (<0.3 V) to enter 0.1 µA shutdown state-ideal for host MCU control. |
| 4: ECO | Mode selection control | Ground for LP mode (ultra-low Iq); tie to Vin for FT mode (fast transient response and tighter regulation). |
| 5: Vout | Regulated output | Delivers 1.8 V ±2% (FT) or ±3% (LP); requires ≥2.2 µF tantalum or ceramic capacitor with ≤40 mΩ ESR for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Tri-mode operation (CE + ECO) | Enables dynamic trade-off between power efficiency (LP), regulation precision (FT), and full disable (shutdown)-no external mode logic required. |
| Low dropout at 200 mA | 200 mV @ 1.8 V output allows use with weak or depleting batteries while maintaining regulated output down to 2.0 V input. |
| High PSRR (75 dB @ 1 kHz) | Effectively isolates sensitive analog or RF circuitry from noisy digital supply domains without additional filtering stages. |
| Fold-back current protection | Reduces output current during short-circuit events to limit power dissipation and prevent thermal runaway in SOT23-5 package. |
| Ultra-low shutdown current | 0.1 µA ensures negligible battery drain during extended system sleep-critical for always-on IoT sensor nodes. |
Applications
| Portable Medical Sensors | Wearable Fitness Trackers |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) using coin-cell battery and low-power ADC/microcontroller. IC Role / Device Role / Timing Role: Primary 1.8 V power rail regulator supplying analog front-end and BLE SoC. Use Value: LP mode reduces system standby current to sub-µA levels; 200 mV dropout extends usable battery life by >15% versus higher-dropout alternatives. | Use Scenario: Heart-rate monitor with optical sensor, accelerometer, and Bluetooth LE radio. IC Role / Device Role / Timing Role: Stable 1.8 V supply for sensor interface and wireless transceiver during burst transmission. Use Value: FT mode delivers fast load transient response (<10 µs recovery) to handle radio transmit current spikes without output droop. |
| Handheld Test Instruments | Industrial Data Loggers |
Use Scenario: Battery-powered multimeter with LCD display and precision reference. IC Role / Device Role / Timing Role: Precision 1.8 V rail for ADC reference and microcontroller core voltage. Use Value: ±2% accuracy and 100 ppm/°C drift ensure measurement repeatability across operating temperature range. | Use Scenario: Remote environmental logger using LoRaWAN and long-life primary cells. IC Role / Device Role / Timing Role: Main system regulator enabling deep-sleep cycles between sensor reads and transmissions. Use Value: 0.1 µA shutdown current minimizes self-discharge, supporting >5-year field deployment on AA batteries. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1804T-1802I/OT | Fixed 1.8 V, 150 mA, 300 mV dropout @ 150 mA, no tri-mode, 3.5 µA Iq (quiescent only) | Lacks ECO-controlled FT/LP modes; simpler enable but no dynamic performance/power tuning | Select when design requires lowest possible BOM count and does not need mode-switching capability. |
| Torex XC6209F182MR-G | Fixed 1.8 V, 300 mA, 250 mV dropout @ 300 mA, 1 µA Iq, no tri-mode, CE only | Higher current rating and lower Iq, but no ECO pin or FT mode-optimized purely for ultra-low-power static operation | Select when maximum current headroom and minimal quiescent draw are prioritized over transient performance flexibility. |
Compared with MCP1804T-1802I/OT and XC6209F182MR-G, the NCP584LSN18T1G uniquely provides real-time, pin-controlled optimization between low-noise regulation (FT) and ultra-low-power operation (LP), making it suitable for adaptive power management in resource-constrained portable systems where both performance and battery longevity are critical.
Availability
NCP584LSN18T1G is available at Aetrix Electronics and suitable for portable medical sensors, wearable fitness trackers, handheld test instruments, and industrial data loggers requiring stable component supply, long-term lifecycle support, and Pb-free compliance.
Supply support for NCP584LSN18T1G 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 manufacturer specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The NCP584 series belongs to onsemi's precision low-dropout regulator product line, designed specifically for battery-powered portable electronics demanding high accuracy, ultra-low quiescent current, and dynamic power-state adaptability.
FAQ
What is the function of the ECO pin on the NCP584LSN18T1G?
The ECO pin on the NCP584LSN18T1G selects between Fast Transient (FT) mode and Low Power (LP) mode: tying ECO to Vin activates FT mode (40 µA Iq, ±2% accuracy, 20 mV load regulation), while grounding ECO enables LP mode (3.5 µA Iq, ±3% accuracy, 10 mV load regulation). This dual-mode capability is unique to the NCP584LSN18T1G and allows dynamic optimization without firmware intervention.
Does the NCP584LSN18T1G require an external capacitor on the Vout pin?
Yes, the NCP584LSN18T1G requires an output capacitor for stability: ≥2.2 µF tantalum or ceramic with ≤40 mΩ ESR in LP mode, and ≥1.0 µF ceramic with ESR values defined per output current (see Figures 32–34 in datasheet) in FT mode. Omitting or undersizing the capacitor risks oscillation or poor transient response in the NCP584LSN18T1G.
What is the maximum input voltage rating for the NCP584LSN18T1G?
The absolute maximum input voltage for the NCP584LSN18T1G is 6.5 V, as specified in the Maximum Ratings table. Operation above this level may cause permanent damage. For reliable long-term use, the recommended operating input range is 1.4 V to 6.0 V, ensuring proper regulation and thermal safety under all load and temperature conditions for the NCP584LSN18T1G.
How does the NCP584LSN18T1G behave during shutdown?
When the CE pin is pulled low, the NCP584LSN18T1G enters shutdown mode with typical current consumption of 0.1 µA and output disabled. The pass transistor is fully turned off, isolating Vin from Vout; however, reverse current flow is not blocked, so external diode protection may be needed if backfeed is possible. This behavior is consistent across all operating modes of the NCP584LSN18T1G.
Can the NCP584LSN18T1G be used with ceramic output capacitors?
Yes, the NCP584LSN18T1G supports ceramic output capacitors, but minimum ESR requirements vary by mode and load: in FT mode, ESR must meet values shown in Figures 32–34 (e.g., ~60 mΩ at 200 mA for 1.8 V output); in LP mode, ESR must be ≥40 mΩ for all loads. Using a ceramic capacitor below the required ESR may cause instability in the NCP584LSN18T1G.
NCP584LSN18T1G 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):
- 6V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 200mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 70 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- 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
NCP584LSN18T1G FAQ
1.How can I place an order for NCP584LSN18T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP584LSN18T1G 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 NCP584LSN18T1G reliable?
The price and inventory of NCP584LSN18T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP584LSN18T1G is usually 5 days.
3.What payment methods are accepted for NCP584LSN18T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP584LSN18T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP584LSN18T1G?
NCP584LSN18T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP584LSN18T1G 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 NCP584LSN18T1G?
For technical support, including NCP584LSN18T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP584LSN18T1G requirements.
6.How does Aetrix verify that NCP584LSN18T1G is sourced from the original manufacturer or authorized distributors?
All NCP584LSN18T1G 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 NCP584LSN18T1G meets industry standards.
7.What is the process for return or replacement of NCP584LSN18T1G?
All NCP584LSN18T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP584LSN18T1G, 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 NCP584LSN18T1G part is unused and in its original packaging.
Return procedure for NCP584LSN18T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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