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onsemi NCP582LSQ25T1G
- Part No.:
- NCP582LSQ25T1G
- Manufacturer:
- onsemi
- Package:
- SC-82A, SOT-343
- Datasheet:
-
NCP582LSQ25T1G.pdf
- Description:
- IC REG LINEAR 2.5V 150MA SC82AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,419
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Product details
Overview
NCP582LSQ25T1G from onsemi is an ultra-fast, low-noise 150 mA CMOS LDO regulator with active-low enable and no auto-discharge, delivering a fixed 2.5 V output voltage, 220 mV dropout at 150 mA, and 30 µVRMS output noise (10 Hz–100 kHz), optimized for portable battery-powered instrumentation requiring high ripple rejection and tight voltage accuracy.
For engineers reviewing the NCP582LSQ25T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its SC-82AB package footprint, 2% output voltage accuracy over −40°C to +85°C, 70 dB PSRR at 1 kHz, and compatibility with 0.47 µF ceramic output capacitance for 2.5 V operation.
Technical Context
The NCP582LSQ25T1G implements a CMOS-based LDO architecture with internal reference, error amplifier, and pass transistor, configured for active-low chip enable (CE) control without auto-discharge functionality. Its design targets low quiescent current (75 µA typ.) and fast transient response under dynamic load steps.
It operates across 2.0–6.0 V input range while maintaining regulated 2.5 V output, supports up to 150 mA continuous load, and features fold-back current limiting and thermal shutdown protection. The device exhibits 100 ppm/°C output voltage temperature coefficient and 0.02%/V line regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±2% - ensures stable core or I/O rail for precision analog/digital circuits. |
| Dropout Voltage | 220 mV at 150 mA - enables operation from single-cell Li-ion or 3.3 V supply with margin. |
| Quiescent Current | 75 µA typical - minimizes battery drain in always-on portable systems. |
| PSRR | 70 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters. |
| Output Noise | 30 µVRMS (10 Hz–100 kHz) - suitable for noise-sensitive ADCs, RF front-ends, and precision sensors. |
| Operating Temp | −40°C to +85°C ambient - validated for industrial and consumer handheld environments. |
| Input Voltage Range | 2.0 V to 6.0 V - accommodates wide battery chemistries and intermediate supply rails. |
Pinout & Package
Package: SC-82AB (Case 419C), 4-pin surface-mount package with exposed pad (not electrically connected), 2.0 × 1.25 mm footprint, 0.65 mm pitch, Pb-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Vin) | Input power supply | Accepts 2.0–6.0 V input; requires 1.0 µF ceramic decoupling capacitor to GND. |
| 2 (GND) | Power ground | Primary ground reference for regulator feedback and internal circuitry; connects to PCB ground plane. |
| 3 (Vout) | Regulated output | Delivers fixed 2.5 V ±2%; requires 0.47 µF ceramic capacitor to GND per datasheet for stability. |
| 4 (CE) | Active-low enable | Pull low to enable regulator; pull high (≥ VIN − 0.3 V) to disable; no auto-discharge function. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 220 mV at full 150 mA load - maximizes usable battery voltage range in space-constrained devices. |
| Low output noise | 30 µVRMS without external noise-reduction capacitor - eliminates need for additional filtering components. |
| High PSRR | 70 dB at 1 kHz - maintains clean 2.5 V rail despite noisy switcher-derived inputs. |
| Fast dynamic response | Stable under 0.5 µs load transients (1–150 mA) - prevents brownout during processor wake-up bursts. |
| Thermal & current protection | Fold-back current limit and thermal shutdown - ensures safe operation during overload or poor heatsinking. |
Applications
| Portable Medical Sensors | Industrial Handheld Scanners |
|---|---|
|
Use Scenario: Battery-powered pulse oximeter with analog front-end and low-power MCU. IC Role / Device Role / Timing Role: Provides clean, stable 2.5 V reference and analog supply for ADC and op-amps. Use Value: 30 µVRMS noise and 2% accuracy preserve signal integrity for sub-1% SpO₂ measurement resolution. |
Use Scenario: Rugged barcode scanner with integrated imager and Bluetooth LE radio. IC Role / Device Role / Timing Role: Powers image sensor interface and BLE SoC I/O domain from shared Li-ion cell. Use Value: 220 mV dropout extends runtime by >12% compared to 300 mV-dropout LDOs at end-of-discharge. |
| Wearable Health Monitors | Smart Home Sensor Nodes |
|
Use Scenario: Compact ECG patch with ultra-low-power MCU and analog signal chain. IC Role / Device Role / Timing Role: Supplies regulated 2.5 V to instrumentation amplifiers and SAR ADC. Use Value: 75 µA quiescent current enables multi-week battery life in sleep mode without compromising startup time. |
Use Scenario: Zigbee-enabled temperature/humidity node powered by coin cell or small Li-Po. IC Role / Device Role / Timing Role: Delivers precise 2.5 V bias to humidity sensor and RF transceiver analog blocks. Use Value: 70 dB PSRR isolates sensitive RF receive path from digital switching noise on shared PCB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2502E/TT | 250 mA rated, 1.6 µA quiescent current, no enable pin, SOT-23-5 package | Lacks enable control and higher noise (80 µVRMS) - unsuitable where active power gating or low-noise analog supply is required | Select only if ultra-low IQ dominates over noise, enable, and size constraints |
| Torex XC6206P252MR-G | 150 mA rated, 1.0 µA IQ, no enable, SOT-23-3 package, 45 µVRMS noise | Smaller footprint but lacks CE control and has higher noise - limits use in precision analog or power-gated systems | Consider only for cost-sensitive, non-gated, non-noise-critical 2.5 V rails |
Compared with MCP1700T-2502E/TT and XC6206P252MR-G, the NCP582LSQ25T1G uniquely balances low noise (30 µVRMS), active-low enable, and compact SC-82AB packaging-making it optimal for portable systems needing both precision regulation and dynamic power control.
Availability
NCP582LSQ25T1G is available at Aetrix Electronics and suitable for portable medical sensors, industrial handheld scanners, and wearable health monitors requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for NCP582LSQ25T1G 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, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The NCP582 series belongs to onsemi's precision low-noise LDO portfolio, designed specifically for battery-powered portable equipment demanding high accuracy, low IQ, and fast transient response in minimal footprint.
FAQ
What is the maximum output current capability of the NCP582LSQ25T1G?
The NCP582LSQ25T1G is rated for 150 mA continuous output current under recommended operating conditions. Absolute maximum rating is 200 mA, but sustained operation above 150 mA may trigger fold-back current limiting or thermal shutdown depending on ambient temperature and PCB thermal design. Derating is advised above 85°C ambient.
Does the NCP582LSQ25T1G require an external noise-reduction capacitor?
No, the NCP582LSQ25T1G 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 RC network, simplifying layout and reducing BOM count while maintaining low-noise performance.
What is the recommended output capacitor value for the NCP582LSQ25T1G?
Per the datasheet, a 0.47 µF ceramic capacitor is recommended for the NCP582LSQ25T1G since its output voltage is 2.5 V. This value ensures stability, optimal transient response, and meets ESR requirements. Placement must be within 2 mm of the Vout and GND pins with short, wide traces.
Is the NCP582LSQ25T1G pin-compatible with other variants in the NCP582 family?
Yes - all SC-82AB-packaged NCP582 variants (e.g., NCP582LSQ18T1G, NCP582DSQ25T1G) share identical pinout and footprint. However, enable logic polarity differs: NCP582LSQ25T1G uses active-low CE, while D-version parts feature active-high CE with auto-discharge - direct substitution requires schematic review.
What thermal performance can be expected from the NCP582LSQ25T1G in SC-82AB package?
In the SC-82AB package, the NCP582LSQ25T1G has a thermal resistance θJA of approximately 220°C/W (typical, no copper pour). With 150 mA load and 3.5 V input (1.0 V dropout), power dissipation is ~150 mW; junction temperature rise is ~33°C above ambient - well within the 125°C max rating when ambient stays ≤92°C.
NCP582LSQ25T1G 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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 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
NCP582LSQ25T1G FAQ
1.How can I place an order for NCP582LSQ25T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP582LSQ25T1G 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 NCP582LSQ25T1G reliable?
The price and inventory of NCP582LSQ25T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP582LSQ25T1G is usually 5 days.
3.What payment methods are accepted for NCP582LSQ25T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP582LSQ25T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP582LSQ25T1G?
NCP582LSQ25T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP582LSQ25T1G 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 NCP582LSQ25T1G?
For technical support, including NCP582LSQ25T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP582LSQ25T1G requirements.
6.How does Aetrix verify that NCP582LSQ25T1G is sourced from the original manufacturer or authorized distributors?
All NCP582LSQ25T1G 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 NCP582LSQ25T1G meets industry standards.
7.What is the process for return or replacement of NCP582LSQ25T1G?
All NCP582LSQ25T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP582LSQ25T1G, 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 NCP582LSQ25T1G part is unused and in its original packaging.
Return procedure for NCP582LSQ25T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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