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onsemi NCP582DSQ18T1G
- Part No.:
- NCP582DSQ18T1G
- Manufacturer:
- onsemi
- Package:
- SC-82A, SOT-343
- Datasheet:
-
NCP582DSQ18T1G.pdf
- Description:
- IC REG LINEAR 1.8V 150MA SC82AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,275
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Product details
Overview
NCP582DSQ18T1G from onsemi is a 1.8 V, 150 mA ultra-low-dropout CMOS linear regulator with active-high enable and auto-discharge functionality, designed for portable battery-powered systems requiring high PSRR (70 dB @ 1 kHz), low output noise (30 µVrms), and tight output voltage accuracy (±2%). It operates from 2.0–6.0 V input and delivers stable regulation in handheld instrumentation and camcorders.
For engineers reviewing the NCP582DSQ18T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 150 mA (0.32 V typ), quiescent current (75 µA typ), thermal performance in SC−82AB package, and compatibility with 0.47 µF ceramic output capacitor.
Technical Context
The NCP582DSQ18T1G implements a CMOS pass transistor architecture with internal bandgap reference and error amplifier, enabling ultra-low dropout and fast load transient response. Its active-high CE pin integrates auto-discharge via an internal 60 Ω N-channel switch to rapidly discharge VOUT when disabled.
It features fold-back current limiting and thermal shutdown protection, with guaranteed operation across −40°C to +85°C ambient. Input voltage range (2.0–6.0 V) and 1.8 V fixed output are factory-trimmed and temperature-compensated to 100 ppm/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2% over load, line, and temperature - ensures stable core supply for low-voltage microcontrollers. |
| Max Output Current | 150 mA continuous - supports moderate-power sensors and RF front-ends without external heat sinking. |
| Dropout Voltage | 0.32 V typical at 150 mA - enables operation down to 2.12 V input while maintaining 1.8 V output. |
| Quiescent Current | 75 µA typical - extends battery life in always-on monitoring circuits. |
| PSRR | 70 dB @ 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 signal chains without external noise-reduction capacitors. |
| Enable Threshold | VENH = 1.5 V min, VENL = 0.3 V max - compatible with 1.8 V and 3.3 V logic-level control signals. |
Pinout & Package
Package: SC−82AB (Case 419C), 4-pin surface-mount package with exposed pad (not electrically connected), footprint dimensions 2.0 × 1.25 × 0.95 mm (L × W × H), Pb-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Vin) | Input power supply | Accepts 2.0–6.0 V DC; requires 1.0 µF ceramic decoupling capacitor placed adjacent to pin. |
| 2 (GND) | Power ground | Primary ground return path; connects to PCB ground plane for thermal and noise control. |
| 3 (Vout) | Regulated output | Delivers 1.8 V ±2%; requires 0.47 µF ceramic output capacitor placed within 2 mm of pin per layout guidelines. |
| 4 (CE) | Active-high enable | Pull high ≥1.5 V to enable regulator; pulls low ≤0.3 V to disable with auto-discharge activation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 220 mV max at 150 mA - enables use in single-cell Li-ion (2.7–4.2 V) and multi-cell alkaline systems. |
| Auto-discharge | 60 Ω internal N-channel switch - discharges VOUT to <100 mV within 100 µs after disable, preventing back-powering. |
| High PSRR | 70 dB @ 1 kHz, 60 dB @ 10 kHz - maintains clean output under noisy DC/DC ripple conditions. |
| Low temperature drift | 100 ppm/°C - ensures output stability across industrial temperature range without calibration. |
| Fold-back protection | 40 mA short-circuit current limit - prevents thermal runaway during output fault conditions. |
Applications
| Portable Medical Sensors | Wireless IoT Edge Nodes |
|---|---|
Use Scenario: Wearable pulse oximeter with optical sensor, ADC, and BLE radio operating from coin cell. IC Role / Device Role / Timing Role: Primary 1.8 V supply for BLE SoC and analog front-end, enabled only during measurement bursts. Use Value: 75 µA quiescent current extends battery life beyond 1 year; 30 µVrms noise avoids ADC quantization errors. |
Use Scenario: Battery-powered environmental sensor node transmitting temperature/humidity data every 5 minutes. IC Role / Device Role / Timing Role: Stable 1.8 V rail for ultra-low-power MCU and digital sensor interface during active transmission. Use Value: 0.32 V dropout allows operation until battery drops to 2.12 V, maximizing usable capacity from 2.4 V nominal Li-SOCl₂ cells. |
| Industrial Handheld Scanners | Smart Camera Modules |
Use Scenario: Rugged barcode scanner with laser diode driver, image sensor, and ARM Cortex-M4 processor. IC Role / Device Role / Timing Role: Secondary regulated rail for image sensor analog block and precision reference voltage generation. Use Value: 70 dB PSRR isolates sensor analog circuitry from digital switching noise generated by CPU and display drivers. |
Use Scenario: Embedded vision module in security camera using 1.8 V MIPI CSI-2 interface and ISP core. IC Role / Device Role / Timing Role: Dedicated low-noise 1.8 V supply for MIPI PHY and image signal processor I/O banks. Use Value: Auto-discharge ensures rapid VOUT collapse upon sleep entry, eliminating leakage paths that could disrupt MIPI link state. |
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 | 250 mV dropout at 150 mA; 1.6 µA quiescent current; no auto-discharge; SOT-23-5 package. | Lacks auto-discharge and higher PSRR; better for ultra-low-IQ always-on bias rails, not dynamic enable/disable systems. | Select when lowest possible standby current outweighs need for fast discharge and noise rejection. |
| Torex XC6206P182MR-G | 300 mV dropout at 150 mA; 1.0 µA IQ; no enable pin; SOT-23-3 package. | No enable control or auto-discharge; fixed-output only; lower PSRR (60 dB @ 1 kHz). | Choose for cost-sensitive, non-enabling applications where minimal footprint and ultra-low IQ are primary. |
Compared with MCP1700T-1802E/TT and XC6206P182MR-G, the NCP582DSQ18T1G provides superior dynamic performance (fast turn-on/off, load transients), integrated auto-discharge for system-level power sequencing, and higher PSRR-making it optimal for battery-powered devices requiring precise, controllable, low-noise regulation.
Availability
NCP582DSQ18T1G is available at Aetrix Electronics and suitable for portable medical sensors, wireless IoT edge nodes, and industrial handheld scanners requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP582DSQ18T1G 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, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP582 series belongs to onsemi's precision analog LDO portfolio, engineered specifically for portable battery-powered equipment demanding ultra-low noise, low IQ, and fast transient response in compact packages.
FAQ
What is the maximum input voltage rating for the NCP582DSQ18T1G?
The NCP582DSQ18T1G has an absolute maximum input voltage (VIN) rating of 6.5 V. Operation above this level risks permanent damage. The recommended operating input range is 2.0 V to 6.0 V, ensuring proper regulation and thermal safety across all load and temperature conditions for the NCP582DSQ18T1G.
Does the NCP582DSQ18T1G require an external noise-reduction capacitor?
No, the NCP582DSQ18T1G achieves 30 µVrms output noise (10 Hz–100 kHz) without any external noise-reduction capacitor. Its internal design eliminates the need for a bypass pin or external cap, simplifying layout and reducing BOM count while maintaining low-noise performance for the NCP582DSQ18T1G.
What is the purpose of the auto-discharge function in the NCP582DSQ18T1G?
The auto-discharge function in the NCP582DSQ18T1G activates an internal 60 Ω N-channel MOSFET between VOUT and GND when the CE pin is pulled low, rapidly discharging the output capacitor. This prevents back-powering of upstream circuitry and ensures clean power-down sequencing - a critical feature for reliable operation of the NCP582DSQ18T1G in battery-powered systems.
Can the NCP582DSQ18T1G be used with a 0.22 µF output capacitor?
No - the NCP582DSQ18T1G requires a minimum 0.47 µF ceramic output capacitor for stability when VOUT = 1.8 V (≥2.5 V threshold). Using 0.22 µF violates the datasheet-specified decoupling requirement and may cause oscillation or poor transient response. Always use 0.47 µF X7R/X5R ceramic capacitor placed close to the VOUT and GND pins of the NCP582DSQ18T1G.
Is the NCP582DSQ18T1G pin-compatible with other variants in the NCP582 family?
Yes - all SC−82AB packaged NCP582 variants (e.g., NCP582DSQ15T1G, NCP582DSQ28T1G) share identical pinout (Vin, GND, Vout, CE) and footprint. Output voltage and enable polarity are factory-set; thus, the NCP582DSQ18T1G can be substituted within the same package family without PCB changes, provided system voltage and control logic requirements align.
NCP582DSQ18T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- 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):
- 0.55V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 95 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB ~ 60dB (1kHz ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-82AB
NCP582DSQ18T1G FAQ
1.How can I place an order for NCP582DSQ18T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP582DSQ18T1G 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 NCP582DSQ18T1G reliable?
The price and inventory of NCP582DSQ18T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP582DSQ18T1G is usually 5 days.
3.What payment methods are accepted for NCP582DSQ18T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP582DSQ18T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP582DSQ18T1G?
NCP582DSQ18T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP582DSQ18T1G 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 NCP582DSQ18T1G?
For technical support, including NCP582DSQ18T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP582DSQ18T1G requirements.
6.How does Aetrix verify that NCP582DSQ18T1G is sourced from the original manufacturer or authorized distributors?
All NCP582DSQ18T1G 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 NCP582DSQ18T1G meets industry standards.
7.What is the process for return or replacement of NCP582DSQ18T1G?
All NCP582DSQ18T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP582DSQ18T1G, 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 NCP582DSQ18T1G part is unused and in its original packaging.
Return procedure for NCP582DSQ18T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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