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ST1S03APUR
Basic Information Overview
- Category: Integrated Circuit (IC)
- Use: Voltage Regulator
- Characteristics: Low dropout voltage, high efficiency, compact size
- Package: SOP-8 (Small Outline Package)
- Essence: Step-down switching regulator
- Packaging/Quantity: Tape and reel, 2500 units per reel
Specifications
- Input Voltage Range: 2.5V to 18V
- Output Voltage Range: 0.8V to VIN
- Output Current: Up to 3A
- Dropout Voltage: 300mV at 3A
- Switching Frequency: 500kHz
- Operating Temperature Range: -40°C to +125°C
Detailed Pin Configuration
- VIN: Input voltage pin
- GND: Ground pin
- FB: Feedback pin for output voltage regulation
- EN: Enable pin for turning the regulator on/off
- SS/TR: Soft-start/Tracking pin for controlling start-up time
- COMP: Compensation pin for stability optimization
- SW: Switching node pin
- VOUT: Output voltage pin
Functional Features
- High Efficiency: The ST1S03APUR utilizes a synchronous rectification architecture, resulting in high efficiency even at low input voltages.
- Low Dropout Voltage: With a dropout voltage as low as 300mV, this voltage regulator can maintain a stable output voltage even when the input voltage is close to the desired output voltage.
- Compact Size: The SOP-8 package allows for a compact and space-saving design, making it suitable for applications with limited board space.
Advantages and Disadvantages
Advantages: - High efficiency - Low dropout voltage - Compact size - Wide input voltage range
Disadvantages: - Limited output current capability (up to 3A)
Working Principles
The ST1S03APUR is a step-down switching regulator that converts a higher input voltage to a lower output voltage. It operates by using an internal power MOSFET switch and synchronous rectification to achieve high efficiency. The feedback mechanism ensures that the output voltage remains stable within the specified range.
Detailed Application Field Plans
The ST1S03APUR is commonly used in various applications, including: - Power supplies for industrial equipment - Battery-powered devices - Automotive electronics - Telecommunications equipment - Consumer electronics
Detailed and Complete Alternative Models
- ST1S10: Similar functionality with higher output current capability (up to 5A)
- LM2576: Non-synchronous step-down regulator with adjustable output voltage
- LT1763: Low dropout linear regulator with ultra-low noise performance
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Wymień 10 typowych pytań i odpowiedzi związanych z zastosowaniem ST1S03APUR w rozwiązaniach technicznych
Sure! Here are 10 common questions and answers related to the application of ST1S03APUR in technical solutions:
Q1: What is ST1S03APUR? A1: ST1S03APUR is a step-down switching regulator IC (integrated circuit) manufactured by STMicroelectronics.
Q2: What is the input voltage range of ST1S03APUR? A2: The input voltage range of ST1S03APUR is typically between 4.5V and 18V.
Q3: What is the output voltage range of ST1S03APUR? A3: The output voltage range of ST1S03APUR can be adjusted from 0.8V to VIN.
Q4: What is the maximum output current of ST1S03APUR? A4: The maximum output current of ST1S03APUR is 3A.
Q5: What is the efficiency of ST1S03APUR? A5: The efficiency of ST1S03APUR can reach up to 95% depending on the input and output conditions.
Q6: Does ST1S03APUR have built-in protection features? A6: Yes, ST1S03APUR includes various protection features such as overcurrent protection, thermal shutdown, and undervoltage lockout.
Q7: Can ST1S03APUR operate in a wide temperature range? A7: Yes, ST1S03APUR is designed to operate in a temperature range of -40°C to +125°C.
Q8: Is ST1S03APUR suitable for battery-powered applications? A8: Yes, ST1S03APUR is suitable for battery-powered applications due to its low quiescent current and high efficiency.
Q9: Can ST1S03APUR be used in automotive applications? A9: Yes, ST1S03APUR is AEC-Q100 qualified, making it suitable for automotive applications.
Q10: What package options are available for ST1S03APUR? A10: ST1S03APUR is available in a compact and thermally enhanced PowerSO-8 package.
Please note that the answers provided here are general and may vary depending on specific application requirements. It is always recommended to refer to the datasheet and application notes provided by the manufacturer for detailed information.