規格
| 屬性 | 價值 |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 4V |
| Voltage-Input(Max) | 18V |
| Voltage-Output(Min/Fixed) | 0.8V |
| Voltage-Output(Max) | 18V |
| Current-Output | 3A |
| Frequency-Switching | 850kHz |
| SynchronousRectifier | Yes |
| OperatingTemperature | -40°C ~ 150°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) Exposed Pad |
概述
Description
The ST1S40IPHR is a part of STMicroelectronics' range of step-down switching voltage regulators. It is designed to efficiently convert higher input voltages to lower output voltages, making it suitable for various applications that require stable power delivery. Key features include a wide input voltage range, high efficiency, and integrated power MOSFETs, which contribute to minimizing external components and reducing overall system cost. The regulator supports adjustable output voltage, allowing for flexibility in different circuit designs. It is often used in consumer electronics, industrial systems, and other areas where efficient power management is critical. The device is equipped with protection features like overcurrent protection, thermal shutdown, and short-circuit protection, enhancing reliability and safety in various operating conditions. The compact package design also aids in space-constrained applications. Overall, the ST1S40IPHR is valued for its balance of performance, efficiency, and ease of use in DC-DC conversion tasks.
Equivalent
The ST1S40IPHR is a step-down switching regulator from STMicroelectronics. Equivalent products from other manufacturers include:
1. MP2307 - Monolithic Power Systems: A 3A step-down converter with a similar voltage range.
2. LM2596 - Texas Instruments: A popular 3A step-down voltage regulator.
3. AP1509 - Diodes Incorporated: A 2A step-down converter with similar characteristics.
These alternatives offer comparable functionality and are often used in similar applications. Always verify specifications to ensure compatibility with your specific requirements.
1. MP2307 - Monolithic Power Systems: A 3A step-down converter with a similar voltage range.
2. LM2596 - Texas Instruments: A popular 3A step-down voltage regulator.
3. AP1509 - Diodes Incorporated: A 2A step-down converter with similar characteristics.
These alternatives offer comparable functionality and are often used in similar applications. Always verify specifications to ensure compatibility with your specific requirements.
Features
The ST1S40IPHR is a high-efficiency monolithic step-down switching regulator designed for applications requiring a compact and efficient power solution. Key features include:
1. Input Voltage Range: Operates with an input voltage range of 2.7V to 18V, allowing flexibility in various applications.
2. Output Current: Can deliver up to 0.9A of continuous output current.
3. Efficiency: High efficiency, which minimizes heat generation and enhances performance, especially in battery-powered devices.
4. Switching Frequency: Operates at a fixed 900 kHz frequency, optimizing the size of external components and overall design compactness.
5. Adjustable Output Voltage: Offers an adjustable output voltage, allowing customization for specific application needs.
6. Protection Features: Includes built-in overcurrent, overtemperature, and undervoltage lockout protection, enhancing reliability and safety.
7. Package Type: Available in a compact package, which is suitable for space-constrained designs.
8. Applications: Typically used in consumer electronics, industrial equipment, and other applications requiring efficient voltage regulation.
These features make the ST1S40IPHR a versatile and reliable choice for various power management applications.
1. Input Voltage Range: Operates with an input voltage range of 2.7V to 18V, allowing flexibility in various applications.
2. Output Current: Can deliver up to 0.9A of continuous output current.
3. Efficiency: High efficiency, which minimizes heat generation and enhances performance, especially in battery-powered devices.
4. Switching Frequency: Operates at a fixed 900 kHz frequency, optimizing the size of external components and overall design compactness.
5. Adjustable Output Voltage: Offers an adjustable output voltage, allowing customization for specific application needs.
6. Protection Features: Includes built-in overcurrent, overtemperature, and undervoltage lockout protection, enhancing reliability and safety.
7. Package Type: Available in a compact package, which is suitable for space-constrained designs.
8. Applications: Typically used in consumer electronics, industrial equipment, and other applications requiring efficient voltage regulation.
These features make the ST1S40IPHR a versatile and reliable choice for various power management applications.
Pinout
The ST1S40IPHR is a step-down switching regulator produced by STMicroelectronics. It typically comes in an 8-pin HSOP package. Below is a brief overview of its pin functions:
1. VIN: Input voltage supply.
2. SW: Switch node connected to the inductor.
3. GND: Ground reference.
4. FB: Feedback voltage input to set the output voltage via an external resistor divider.
5. EN: Enable pin to turn the device on or off.
6. PG: Power Good indicator. Indicates whether the output voltage is within regulation.
7. SS/TR: Soft-start or tracking pin. Allows control of the soft-start time and tracking functionality.
8. COMP: Compensation pin used to stabilize the control loop.
These pins are configured to allow the ST1S40IPHR to efficiently convert a higher input voltage to a lower output voltage with a high degree of accuracy and control.
1. VIN: Input voltage supply.
2. SW: Switch node connected to the inductor.
3. GND: Ground reference.
4. FB: Feedback voltage input to set the output voltage via an external resistor divider.
5. EN: Enable pin to turn the device on or off.
6. PG: Power Good indicator. Indicates whether the output voltage is within regulation.
7. SS/TR: Soft-start or tracking pin. Allows control of the soft-start time and tracking functionality.
8. COMP: Compensation pin used to stabilize the control loop.
These pins are configured to allow the ST1S40IPHR to efficiently convert a higher input voltage to a lower output voltage with a high degree of accuracy and control.
Manufacturer
The ST1S40IPHR is manufactured by STMicroelectronics. STMicroelectronics is a multinational electronics and semiconductor company. It is one of the world's leading semiconductor companies, providing products and solutions that span microelectronics, MEMS (Micro-Electro-Mechanical Systems), sensors, power management, and other semiconductor solutions used across various applications and industries. The company is known for its innovation in electronic components and plays a significant role in sectors such as automotive, industrial, personal electronics, communications equipment, and Internet of Things (IoT) applications.
Application
The ST1S40IPHR is a step-down DC-DC converter used primarily in applications requiring efficient power management. It is commonly used in portable devices, industrial control systems, and embedded systems due to its ability to deliver high output current with low output voltage ripple. This makes it suitable for powering microprocessors, microcontrollers, and other sensitive electronic components. Its compact design and high efficiency also make it ideal for use in battery-powered applications, where prolonging battery life is crucial. Additionally, it can be employed in telecommunications equipment and consumer electronics, where stable and efficient power conversion is necessary.
Package
The ST1S40IPHR is a step-down DC-DC converter by STMicroelectronics, provided in a DFN (Dual Flat No-leads) package, specifically the DFN 3x3 mm. This package type is compact and suitable for applications requiring efficient power management in limited space.
