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onsemi NCP582DSQ15T1G
- Part No.:
- NCP582DSQ15T1G
- Manufacturer:
- onsemi
- Package:
- SC-82A, SOT-343
- Datasheet:
-
NCP582DSQ15T1G.pdf
- Description:
- IC REG LINEAR 1.5V 150MA SC82AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,053
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Product details
Overview
NCP582DSQ15T1G from onsemi is a 1.5 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 ripple rejection (70 dB at 1 kHz), low output noise (30 µVRMS), and ±2% output voltage accuracy over load/temperature. It operates from 2.0–6.0 V input and delivers stable regulation in handheld instrumentation and camcorders.
For engineers reviewing the NCP582DSQ15T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 150 mA (0.22 V typ), quiescent current (75 µA typ), shutdown current (0.1 µA typ), thermal performance in SC-82AB package, and compatibility with 0.47 µF ceramic output capacitor.
Technical Context
The NCP582DSQ15T1G implements a CMOS-based LDO architecture with internal bandgap reference, error amplifier, and N-channel pass transistor enabling ultra-low dropout and fast transient response. Its active-high CE pin integrates auto-discharge circuitry (60 Ω typical N-channel on-resistance) to rapidly discharge VOUT when disabled.
It features fold-back current limiting and thermal shutdown protection. The regulator maintains 0.02%/V line regulation and 22 mV load regulation across −40°C to +85°C ambient, with output voltage temperature coefficient of 100 ppm/°C - critical for precision analog subsystems in portable equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.5 V ±2% (tight tolerance ensures stable core/sensor rail without external trimming) |
| Max Output Current | 150 mA (supports moderate-power microcontrollers and analog ICs) |
| Dropout Voltage | 0.22 V at 150 mA (enables operation down to 1.72 V input, extending battery life) |
| Quiescent Current | 75 µA typ (minimizes standby power loss in always-on subsystems) |
| PSRR | 70 dB at 1 kHz (rejects switching noise from DC-DC converters feeding Vin) |
| Output Noise | 30 µVRMS (10 Hz–100 kHz) (suitable for noise-sensitive ADCs, RF front-ends) |
| Shutdown Current | 0.1 µA typ (enables deep-sleep modes with negligible leakage) |
| Input Voltage Range | 2.0–6.0 V (compatible with single Li-ion, dual alkaline, or regulated 3.3/5 V rails) |
Pinout & Package
Package: SC-82AB (Case 419C), 4-pin surface-mount, 2.0 × 1.25 × 0.95 mm body, Pb-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Vin) | Input power supply | Accepts 2.0–6.0 V; requires 1.0 µF ceramic decoupling close to pin |
| 2 (GND) | Power ground | Primary ground return path; must be low-impedance connection to PCB ground plane |
| 3 (Vout) | Regulated output | Delivers 1.5 V ±2%; requires 0.47 µF ceramic capacitor per datasheet for Vout ≤ 2.5 V |
| 4 (CE) | Active-high enable | Pull high ≥1.5 V to enable; includes integrated auto-discharge FET to sink Vout load during shutdown |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 220 mV at 150 mA enables operation from near-dead batteries in portable devices |
| Low-noise regulation | 30 µVRMS noise (no NR cap needed) preserves SNR in audio and precision sensor signal chains |
| Auto-discharge function | 60 Ω N-channel discharge path clears Vout within microseconds after CE deactivation |
| High PSRR | 70 dB at 1 kHz suppresses ripple from upstream switching regulators |
| Thermal stability | 100 ppm/°C output drift ensures consistent voltage across industrial temperature range |
| Fast transient response | Load step recovery in <10 µs (per Fig. 21–22) maintains regulation during MCU wake-up bursts |
Applications
| Handheld Medical Sensors | Wireless IoT Edge Node |
|---|---|
Use Scenario: Battery-powered pulse oximeter with analog front-end and BLE radio. IC Role / Device Role / Timing Role: Provides clean, low-noise 1.5 V bias for op-amps and ADC reference, while enabling rapid power cycling via CE pin. Use Value: 30 µVRMS noise prevents signal corruption; 0.1 µA shutdown current extends 2-week battery life in sleep mode. | Use Scenario: Compact environmental sensor node powered by coin cell, transmitting data every 5 minutes. IC Role / Device Role / Timing Role: Supplies regulated 1.5 V to ultra-low-power MCU and digital sensors; CE pin synchronizes with transmission duty cycle. Use Value: 75 µA quiescent current minimizes idle drain; 0.22 V dropout allows operation until battery drops to 1.72 V. |
| Digital Camcorder Image Sensor Bias | Portable Test & Measurement DMM |
Use Scenario: High-resolution CMOS image sensor requiring stable analog supply during video capture. IC Role / Device Role / Timing Role: Delivers low-noise 1.5 V to sensor analog core; auto-discharge prevents residual charge from causing startup glitches. Use Value: 70 dB PSRR rejects noise from camera motor drivers; fast load transient response avoids frame artifacts during exposure changes. | Use Scenario: Handheld multimeter with LCD, precision ADC, and auto-ranging circuitry. IC Role / Device Role / Timing Role: Powers 1.5 V reference and analog signal chain; CE pin disables regulator during measurement standby. Use Value: ±2% output accuracy ensures calibration integrity; 100 ppm/°C tempco maintains reading stability across operating temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1502E/TT | 250 mV dropout at 250 mA; 1.6 µA Iq; no auto-discharge; SOT-23-5 package | Lacks active discharge; higher Iq unsuitable for long-duration sleep modes | Choose if ultra-low Iq is not required and board space permits larger SOT-23 footprint |
| Torex XC6206P152MR-G | 300 mV dropout at 150 mA; 1 µA Iq; no CE pin; SOT-23-3 package | No enable control; fixed 1.5 V output only; simpler but less flexible | Choose for cost-sensitive, always-on applications where CE functionality is unnecessary |
Compared with MCP1700T-1502E/TT and XC6206P152MR-G, the NCP582DSQ15T1G uniquely combines ultra-low dropout (0.22 V), sub-µA shutdown current (0.1 µA), and integrated auto-discharge - making it optimal for portable systems demanding both efficiency and controlled power sequencing.
Availability
NCP582DSQ15T1G is available at Aetrix Electronics and suitable for handheld instrumentation, wireless IoT edge nodes, and portable medical sensors requiring stable component supply, long-term lifecycle support, and Pb-free compliance.
Supply support for NCP582DSQ15T1G 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 intelligent power systems.
The NCP582 series belongs to onsemi's precision analog LDO portfolio, engineered specifically for battery-constrained portable applications needing low noise, low Iq, and fast enable/disable control - not general-purpose power conversion.
FAQ
What is the maximum input voltage rating for the NCP582DSQ15T1G?
The NCP582DSQ15T1G has an absolute maximum input voltage (Vin) rating of 6.5 V. However, the recommended operating input voltage range is 2.0 V to 6.0 V per electrical characteristics testing conditions. Exceeding 6.5 V risks permanent damage due to junction breakdown. For reliable operation with margin, design Vin ≤ 6.0 V, especially under transient conditions.
Does the NCP582DSQ15T1G require an external noise-reduction capacitor?
No, the NCP582DSQ15T1G does not require an external noise-reduction capacitor. Its output noise is specified at 30 µVRMS (10 Hz–100 kHz) with no NR capacitor installed. This low intrinsic noise is achieved through optimized internal CMOS design and makes the NCP582DSQ15T1G suitable for noise-sensitive analog circuits without additional passive components.
What is the purpose of the auto-discharge feature in the NCP582DSQ15T1G?
The auto-discharge feature in the NCP582DSQ15T1G activates an internal N-channel FET (60 Ω typical on-resistance) between Vout and GND when the CE pin is pulled low. This rapidly discharges any stored charge on the output capacitor, preventing unintended power-on events or voltage back-feeding into downstream circuitry during system shutdown - critical for safe power sequencing in portable devices.
Can the NCP582DSQ15T1G be used with a 0.22 µF output capacitor?
No - the NCP582DSQ15T1G requires a minimum 0.47 µF ceramic output capacitor for stable operation at 1.5 V output, as specified in the datasheet for Vout ≤ 2.5 V. Using 0.22 µF may cause oscillation or poor transient response. The device is optimized for 0.47 µF (or 1.0 µF for enhanced stability), and ESR must remain low (<100 mΩ) to ensure phase margin.
Is the NCP582DSQ15T1G pin-compatible with other variants in the NCP582 family?
Yes - all SC-82AB packaged NCP582 variants (e.g., NCP582DSQ18T1G, NCP582LSQ15T1G) share identical pinout (Vin, GND, Vout, CE) and footprint. However, functional differences exist: DSQ versions feature active-high CE with auto-discharge, while LSQ versions use active-low CE without auto-discharge. Swapping requires logic-level and discharge-path verification in the host design.
NCP582DSQ15T1G 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):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.70V @ 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
NCP582DSQ15T1G FAQ
1.How can I place an order for NCP582DSQ15T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP582DSQ15T1G 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 NCP582DSQ15T1G reliable?
The price and inventory of NCP582DSQ15T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP582DSQ15T1G is usually 5 days.
3.What payment methods are accepted for NCP582DSQ15T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP582DSQ15T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP582DSQ15T1G?
NCP582DSQ15T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP582DSQ15T1G 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 NCP582DSQ15T1G?
For technical support, including NCP582DSQ15T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP582DSQ15T1G requirements.
6.How does Aetrix verify that NCP582DSQ15T1G is sourced from the original manufacturer or authorized distributors?
All NCP582DSQ15T1G 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 NCP582DSQ15T1G meets industry standards.
7.What is the process for return or replacement of NCP582DSQ15T1G?
All NCP582DSQ15T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP582DSQ15T1G, 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 NCP582DSQ15T1G part is unused and in its original packaging.
Return procedure for NCP582DSQ15T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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