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LT1521CS8-3.3
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- 資料表 LT1521CS8-3.3 DataSheet
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規格
| Series | LT1521 |
| Brand | Analog Devices |
| Product Type | LDO Voltage Regulators |
| Subcategory | PMIC - Power Management ICs |
| Product | Linear Regulators |
| Type | Positive Linear Regulator |
| Minimum Operating Temperature | 0 C |
| Maximum Operating Temperature | + 125 C |
| Shipping Restrictions | Mouser does not presently sell this product in your region. |
| Package / Case | SOIC-8 |
| Height | 1.75 mm |
| Output Voltage | 3.3 V |
| Load Regulation | - 20 V |
| Output Current | 300 mA |
| Number of Outputs | 1 Output |
| Input Voltage - Min | 4.3 V |
| Input Voltage - Max | 20 V |
| Operating Supply Current | 12 uA |
| Ib - Input Bias Current | 50 nA |
| Polarity | Positive |
| Quiescent Current | 12 uA |
| PSRR / Ripple Rejection - Typ | 58 dB |
| Output Type | Fixed |
| Dropout Voltage | 500 mV |
| Dropout Voltage - Max | 750 mV |
| Line Regulation | 1.5 mV |
概述
Description
The LT1521CS8-3.3 is a low-dropout (LDO) linear voltage regulator designed to provide a stable 3.3V output from higher input voltages, typically up to 20V. It features a low dropout voltage of around 0.5V, meaning it can maintain regulation with an input voltage only slightly above the output voltage. The device is capable of delivering up to 500 mA of output current and includes built-in protection features such as current limiting and thermal shutdown to prevent damage under fault conditions. The LT1521CS8-3.3 is housed in an 8-pin SOIC package, making it suitable for compact applications. It is commonly used in situations where space and efficiency are critical, such as battery-powered devices, portable electronics, and other applications requiring reliable voltage regulation with minimal power loss.
Features
The LT1521CS8-3.3 is a low dropout (LDO) linear voltage regulator designed to provide a fixed output voltage of 3.3V. Here are its key features:
1. Low Dropout Voltage: It offers a low dropout voltage of around 500mV, which allows it to maintain regulation even when the input voltage is close to the output voltage.
2. Output Current: The LT1521CS8-3.3 can supply a maximum output current of 300mA, suitable for powering small to medium load applications.
3. Quiescent Current: It has a low quiescent current, which is beneficial for battery-operated devices as it helps to conserve power when the load is minimal or idle.
4. Thermal Protection: The device includes thermal overload protection, which prevents damage due to excessive heat by reducing the output current.
5. Short-Circuit Protection: It features internal current limiting to protect against short circuits or overload conditions.
6. Stability: It requires a minimum output capacitor for stability, which can be as low as 3.3µF.
7. Package: The regulator is available in an SO8 package, making it suitable for compact applications.
These features make the LT1521CS8-3.3 ideal for use in portable devices, consumer electronics, and other applications requiring efficient power regulation with minimal voltage overhead.
1. Low Dropout Voltage: It offers a low dropout voltage of around 500mV, which allows it to maintain regulation even when the input voltage is close to the output voltage.
2. Output Current: The LT1521CS8-3.3 can supply a maximum output current of 300mA, suitable for powering small to medium load applications.
3. Quiescent Current: It has a low quiescent current, which is beneficial for battery-operated devices as it helps to conserve power when the load is minimal or idle.
4. Thermal Protection: The device includes thermal overload protection, which prevents damage due to excessive heat by reducing the output current.
5. Short-Circuit Protection: It features internal current limiting to protect against short circuits or overload conditions.
6. Stability: It requires a minimum output capacitor for stability, which can be as low as 3.3µF.
7. Package: The regulator is available in an SO8 package, making it suitable for compact applications.
These features make the LT1521CS8-3.3 ideal for use in portable devices, consumer electronics, and other applications requiring efficient power regulation with minimal voltage overhead.
Package
The LT1521CS8-3.3 is a low dropout (LDO) linear voltage regulator packaged in an 8-pin SOIC (Small Outline Integrated Circuit) package.
Pinout
The LT1521CS8-3.3 is a low dropout (LDO) linear voltage regulator from Analog Devices, designed to provide a fixed output voltage of 3.3V. It typically comes in an 8-pin SOIC package. The pin configuration and their functions are as follows:
1. VIN: Input voltage supply pin.
2. GND: Ground pin.
3. SHDN: Shutdown pin; when pulled low, it turns off the regulator, reducing the quiescent current.
4. VOUT (Pins 4, 5, 6, 7): Output voltage pins; provides the regulated 3.3V output.
8. NC: No connection; may be connected internally or not used.
The device is designed to offer a low dropout voltage, making it suitable for battery-powered applications and situations where voltage drop needs to be minimized. It features thermal shutdown and current limiting protection to enhance reliability.
1. VIN: Input voltage supply pin.
2. GND: Ground pin.
3. SHDN: Shutdown pin; when pulled low, it turns off the regulator, reducing the quiescent current.
4. VOUT (Pins 4, 5, 6, 7): Output voltage pins; provides the regulated 3.3V output.
8. NC: No connection; may be connected internally or not used.
The device is designed to offer a low dropout voltage, making it suitable for battery-powered applications and situations where voltage drop needs to be minimized. It features thermal shutdown and current limiting protection to enhance reliability.
Manufacturer
The LT1521CS8-3.3 is manufactured by Linear Technology Corporation. Linear Technology is a company that specializes in designing, manufacturing, and marketing a broad line of high-performance analog integrated circuits. Their products are used in a variety of applications including telecommunications, networking, industrial instrumentation, computers, automotive electronics, and consumer electronics.
Application
The LT1521CS8-3.3 is a low dropout voltage regulator designed for applications requiring efficient power management with minimal voltage drop. Its application areas include portable and battery-powered devices, such as smartphones, tablets, and wearable electronics, where space and power efficiency are crucial. It's also suitable for embedded systems, communication equipment, and industrial automation where stable 3.3V power supply is necessary. Additionally, it can be used in consumer electronics and automotive electronics for providing regulated power to microcontrollers and other low-voltage components.
Equivalent
The LT1521CS8-3.3 is a low-dropout (LDO) voltage regulator. Equivalent products include:
1. LM1117-3.3 from Texas Instruments - A popular 3.3V LDO regulator.
2. MIC5205-3.3 from Microchip Technology - Known for low dropout and low quiescent current.
3. NCP1117-3.3 from ON Semiconductor - Offers similar output voltage and current capabilities.
4. AMS1117-3.3 from Advanced Monolithic Systems - A widely used alternative for 3.3V regulation.
These equivalents have similar voltage output and performance characteristics but verify pin compatibility and specific requirements.
1. LM1117-3.3 from Texas Instruments - A popular 3.3V LDO regulator.
2. MIC5205-3.3 from Microchip Technology - Known for low dropout and low quiescent current.
3. NCP1117-3.3 from ON Semiconductor - Offers similar output voltage and current capabilities.
4. AMS1117-3.3 from Advanced Monolithic Systems - A widely used alternative for 3.3V regulation.
These equivalents have similar voltage output and performance characteristics but verify pin compatibility and specific requirements.
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