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onsemi NCP580SQ15T1G
- Part No.:
- NCP580SQ15T1G
- Manufacturer:
- onsemi
- Package:
- SC-82A, SOT-343
- Datasheet:
-
NCP580SQ15T1G.pdf
- Description:
- IC REG LINEAR 1.5V 120MA SC82AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,539
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Product details
Overview
NCP580SQ15T1G from onsemi is a 1.5 V, 120 mA ultra-low-dropout linear regulator with active-high enable, designed for precision voltage regulation in portable battery-powered systems. It delivers 1.5% output voltage accuracy, 150 mV dropout at 100 mA, 30 µVRMS output noise (no NR cap), and operates from 2.2 V to 6.0 V input across –40°C to +85°C ambient.
For engineers reviewing the NCP580SQ15T1G datasheet, pinout, applications, or equivalent options, key selection criteria include low quiescent current (90 µA), fast load transient response with 2.2 µF ceramic output capacitor, high PSRR (70 dB @ 1 kHz), and SC-82AB package compatibility with space-constrained handheld instrumentation designs.
Technical Context
The NCP580SQ15T1G implements a CMOS-based LDO architecture with internal bandgap reference, error amplifier, and PMOS pass transistor-enabling ultra-low dropout and minimal quiescent current. Its enable logic is active-high, with threshold defined as VENH ≥ 1.5 V and VENL ≤ 0.3 V relative to Vin.
It features fold-back current limiting, thermal shutdown, and low temperature drift (100 ppm/°C). Input voltage range is 2.2 V to 6.0 V; output is fixed at 1.5 V with ±1.5% initial accuracy and load regulation of ≤12 mV from 1 mA to 120 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±1.5% - ensures stable core/bias rail for low-voltage microcontrollers and sensors. |
| Max Output Current | 120 mA - supports moderate-power analog front-ends and RF biasing without thermal derating in SC-82AB. |
| Dropout Voltage | 180 mV @ 120 mA (VOUT = 2.8 V), 360 mV @ 120 mA (VOUT = 1.5 V) - enables operation down to ~1.68 V input for 1.5 V output. |
| Quiescent Current | 90 µA typical - extends battery life in always-on monitoring circuits with infrequent wake-up cycles. |
| PSRR | 70 dB @ 1 kHz - suppresses switching noise from adjacent DC-DC converters feeding shared input rails. |
| Output Noise | 30 µVRMS (10 Hz–100 kHz, no NR cap) - suitable for noise-sensitive ADC references and RF synthesizer VCO supplies. |
| Enable Threshold | VENH ≥ 1.5 V, VENL ≤ 0.3 V - compatible with 1.8 V and 3.3 V GPIO control without level-shifting. |
Pinout & Package
Package: SC-82AB (Case 419C-02), 4-pin surface-mount, 1.90 mm × 1.30 mm × 0.95 mm body, Pb-free, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Vout | Regulated output | Delivers stable 1.5 V; requires ≥2.2 µF ceramic capacitor placed adjacent to pin for stability and transient response. |
| 2 - GND | Power ground | Low-impedance return path; must be connected directly to PCB ground plane with minimal trace inductance. |
| 3 - CE | Chip enable (active-high) | Drives internal regulator into <0.1 µA shutdown when pulled low; compatible with 1.8 V logic. |
| 4 - Vin | Input supply | Accepts 2.2–6.0 V; requires 1.0 µF ceramic decoupling capacitor placed near pin per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 150 mV @ 100 mA enables use with single-cell Li-ion (3.0–4.2 V) or two-cell alkaline (2.4–3.2 V) inputs. |
| Low-noise regulation | 30 µVRMS output noise eliminates need for external noise-reduction capacitors in precision analog signal chains. |
| High PSRR | 70 dB @ 1 kHz rejects ripple from upstream buck converters, reducing need for additional filtering stages. |
| Fast transient response | Stabilizes within <10 µs for 50 mA load steps (with 2.2 µF output cap), supporting dynamic power modes in portable devices. |
| Thermal & current protection | Fold-back current limit and thermal shutdown prevent damage during sustained overload or poor PCB heatsinking. |
Applications
| Portable Medical Sensors | Handheld Test Meters |
|---|---|
Use Scenario: Battery-powered pulse oximeter with analog front-end and low-power MCU. IC Role / Device Role / Timing Role: Provides clean, stable 1.5 V bias for op-amps and ADC reference, enabling sub-1% measurement accuracy. Use Value: 30 µVRMS noise and 1.5% voltage accuracy minimize offset drift and quantization error in optical signal conditioning. | Use Scenario: Pocket-sized multimeter with auto-ranging analog circuitry and LCD driver. IC Role / Device Role / Timing Role: Supplies regulated 1.5 V to precision voltage reference IC and display controller logic. Use Value: 90 µA quiescent current extends battery life beyond 200 hours in standby mode with periodic sampling. |
| Digital Camera Image Sensors | Wearable Biometric Monitors |
Use Scenario: Compact action camera using CMOS image sensor with analog pixel readout. IC Role / Device Role / Timing Role: Powers sensor analog supply rail requiring low noise and tight voltage tolerance. Use Value: 150 mV dropout allows operation down to 1.65 V input, maximizing usable battery voltage range from Li-Po cells. | Use Scenario: Fitness tracker with heart-rate monitor, accelerometer, and BLE SoC. IC Role / Device Role / Timing Role: Supplies 1.5 V to optical PPG sensor analog chain during brief measurement bursts. Use Value: Active-high CE pin enables precise timing control via MCU GPIO, reducing average current to <1 µA in sleep intervals. |
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 | 1.5 V fixed, 250 mA, 1.6 µA IQ, SOT-23-3 (no CE pin) | Lacks enable function; higher max current but lower PSRR (60 dB @ 1 kHz) | Select when ultra-low IQ dominates over enable control and noise performance. |
| TCS2115-1.5V | 1.5 V fixed, 150 mA, 120 µA IQ, SC-70-5 (includes CE and NR pins) | Includes noise-reduction pin; slightly larger package; 45 dB PSRR @ 1 kHz | Select when external noise filtering is required and board space permits SC-70-5 footprint. |
Compared with MCP1700T-1502E/TT and TCS2115-1.5V, the NCP580SQ15T1G offers superior PSRR and lower output noise in the smallest footprint (SC-82AB), making it optimal for noise-critical, space-constrained portable designs where active enable control is essential.
Availability
NCP580SQ15T1G is available at Aetrix Electronics and suitable for portable medical sensors, handheld test meters, and digital camera image sensors requiring stable component supply, consistent parametric performance, and long-term manufacturability in high-mix low-volume production.
Supply support for NCP580SQ15T1G 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 silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP580 series belongs to onsemi's precision analog power management portfolio, engineered specifically for ultra-low-noise, low-IQ regulation in battery-powered portable electronics.
FAQ
What is the maximum input voltage rating for the NCP580SQ15T1G?
The NCP580SQ15T1G has an absolute maximum input voltage rating of 6.5 V. Its recommended operating input range is 2.2 V to 6.0 V. Exceeding 6.5 V may cause permanent damage. The device maintains regulation down to ~1.68 V input (1.5 V + dropout) under full 120 mA load, making it suitable for single-cell Li-ion and multi-cell alkaline systems.
Does the NCP580SQ15T1G require an external noise-reduction capacitor?
No, the NCP580SQ15T1G achieves 30 µVRMS output noise (10 Hz–100 kHz) without any external noise-reduction capacitor. Its internal design minimizes inherent noise sources, eliminating the need for a dedicated NR pin or external bypass cap-reducing BOM count and PCB area versus alternatives requiring NR networks.
What is the shutdown current specification for the NCP580SQ15T1G?
The NCP580SQ15T1G draws only 0.1 µA typical shutdown current when the CE pin is driven low. This ultra-low leakage enables multi-year battery life in always-connected IoT edge nodes and maintenance-free sensor deployments where the regulator spends >99% of time in disabled state.
Can the NCP580SQ15T1G be used with ceramic output capacitors smaller than 2.2 µF?
While 2.2 µF is the recommended minimum for guaranteed stability and optimal transient response, the NCP580SQ15T1G remains stable with ≥1.0 µF ceramic output capacitance per onsemi's application notes. However, using <2.2 µF increases peak deviation during 50 mA load steps by up to 40% and reduces PSRR margin above 100 kHz.
What is the thermal performance of the NCP580SQ15T1G in the SC-82AB package?
In the SC-82AB package, the NCP580SQ15T1G has a junction-to-ambient thermal resistance (θJA) of approximately 220°C/W on a standard 2-layer FR-4 PCB with minimal copper. At 120 mA and 6.0 V input, power dissipation reaches ~540 mW, resulting in ~120°C junction rise-requiring either reduced load, lower input voltage, or enhanced PCB copper pour to stay within the 125°C TJ(max) limit.
NCP580SQ15T1G 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):
- 0.7V @ 120mA
- Current - Output:
- 120mA
- Current - Quiescent (Iq):
- 160 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-82AB
NCP580SQ15T1G FAQ
1.How can I place an order for NCP580SQ15T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP580SQ15T1G 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 NCP580SQ15T1G reliable?
The price and inventory of NCP580SQ15T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP580SQ15T1G is usually 5 days.
3.What payment methods are accepted for NCP580SQ15T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP580SQ15T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP580SQ15T1G?
NCP580SQ15T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP580SQ15T1G 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 NCP580SQ15T1G?
For technical support, including NCP580SQ15T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP580SQ15T1G requirements.
6.How does Aetrix verify that NCP580SQ15T1G is sourced from the original manufacturer or authorized distributors?
All NCP580SQ15T1G 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 NCP580SQ15T1G meets industry standards.
7.What is the process for return or replacement of NCP580SQ15T1G?
All NCP580SQ15T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP580SQ15T1G, 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 NCP580SQ15T1G part is unused and in its original packaging.
Return procedure for NCP580SQ15T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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