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LT3502EDC
IC REG BUCK ADJ 500MA 8DFN
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規格
| Package | Tube |
| ProductStatus | Obsolete |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 3V |
| Voltage-Input(Max) | 40V |
| Voltage-Output(Min/Fixed) | 0.8V |
| Voltage-Output(Max) | 36V |
| Current-Output | 500mA |
| Frequency-Switching | 1.1MHz |
| SynchronousRectifier | No |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 8-WFDFN Exposed Pad |
概述
Description
The LT3502EDC is a high-performance monolithic step-down switching regulator designed by Analog Devices. It is a part of the LT3502 series, which is known for its efficiency and compact size. The device is capable of delivering up to 500mA of continuous output current from input voltages ranging from 3.6V to 15V, making it suitable for a variety of applications, including portable electronics, industrial controls, and automotive systems.
The LT3502EDC features a 2.2MHz fixed-frequency operation, which allows the use of small, low-cost inductors and capacitors. This high switching frequency also helps achieve a fast transient response and low output voltage ripple. The device includes an internal power switch and a low dropout mode to maintain regulation even at low input voltages.
Additional features include soft-start capability to limit inrush current, overcurrent protection, and thermal shutdown to ensure reliable operation. The LT3502EDC is available in a compact DFN package, which helps in reducing the overall size of the power management solution. Its combination of efficiency, size, and protective features makes it a versatile choice for various power supply applications.
The LT3502EDC features a 2.2MHz fixed-frequency operation, which allows the use of small, low-cost inductors and capacitors. This high switching frequency also helps achieve a fast transient response and low output voltage ripple. The device includes an internal power switch and a low dropout mode to maintain regulation even at low input voltages.
Additional features include soft-start capability to limit inrush current, overcurrent protection, and thermal shutdown to ensure reliable operation. The LT3502EDC is available in a compact DFN package, which helps in reducing the overall size of the power management solution. Its combination of efficiency, size, and protective features makes it a versatile choice for various power supply applications.
Features
The LT3502EDC is a step-down switching regulator designed for converting a higher input voltage to a lower output voltage efficiently. Key features include:
1. Input Voltage Range: It supports a wide input voltage range, typically from 3.6V to 25V, making it versatile for various power supply applications.
2. Output Voltage: The regulator provides adjustable output voltages down to as low as 0.8V, allowing flexibility for different application needs.
3. Output Current: It can deliver up to 1A of continuous output current, suitable for powering small to medium loads.
4. Efficiency: The LT3502EDC is designed for high efficiency, often exceeding 90% depending on the input voltage and load conditions.
5. Switching Frequency: It operates at a high fixed switching frequency of 2.2MHz, which helps reduce the size of the external components and the overall solution footprint.
6. Thermal Performance: The package and design support good thermal performance, which includes thermal shutdown protection to prevent damage from overheating.
7. Protection Features: It includes features like short-circuit protection and over-current protection to enhance reliability.
8. Package: The device is available in a compact 8-lead DFN package, suitable for space-constrained applications.
These features make the LT3502EDC ideal for use in consumer electronics, industrial applications, and other systems requiring efficient voltage regulation.
1. Input Voltage Range: It supports a wide input voltage range, typically from 3.6V to 25V, making it versatile for various power supply applications.
2. Output Voltage: The regulator provides adjustable output voltages down to as low as 0.8V, allowing flexibility for different application needs.
3. Output Current: It can deliver up to 1A of continuous output current, suitable for powering small to medium loads.
4. Efficiency: The LT3502EDC is designed for high efficiency, often exceeding 90% depending on the input voltage and load conditions.
5. Switching Frequency: It operates at a high fixed switching frequency of 2.2MHz, which helps reduce the size of the external components and the overall solution footprint.
6. Thermal Performance: The package and design support good thermal performance, which includes thermal shutdown protection to prevent damage from overheating.
7. Protection Features: It includes features like short-circuit protection and over-current protection to enhance reliability.
8. Package: The device is available in a compact 8-lead DFN package, suitable for space-constrained applications.
These features make the LT3502EDC ideal for use in consumer electronics, industrial applications, and other systems requiring efficient voltage regulation.
Package
The LT3502EDC is a fixed frequency step-down switching regulator in a compact package. It is housed in a 6-lead DFN (Dual Flat No-Lead) package, which is designed to provide excellent thermal performance and a small footprint suitable for compact applications.
Pinout
The LT3502EDC is a step-down switching regulator manufactured by Linear Technology, typically used for power management applications. It has an 8-pin configuration. The key functions of these pins are:
1. SW (Pin 1): Switch pin, connects to the inductor.
2. GND (Pin 2): Ground pin.
3. FB (Pin 3): Feedback pin, used to set the output voltage via a resistor divider.
4. VC (Pin 4): Compensation pin for loop stability.
5. RT (Pin 5): Timing resistor pin, sets the switching frequency.
6. SHDN (Pin 6): Shutdown pin, used to enable or disable the device.
7. VIN (Pin 7): Input voltage pin, where the supply voltage is connected.
8. VOUT (Pin 8): Output voltage pin.
These pins collectively help regulate the voltage from a higher input to a lower output, providing a stable power supply for various electronic components.
1. SW (Pin 1): Switch pin, connects to the inductor.
2. GND (Pin 2): Ground pin.
3. FB (Pin 3): Feedback pin, used to set the output voltage via a resistor divider.
4. VC (Pin 4): Compensation pin for loop stability.
5. RT (Pin 5): Timing resistor pin, sets the switching frequency.
6. SHDN (Pin 6): Shutdown pin, used to enable or disable the device.
7. VIN (Pin 7): Input voltage pin, where the supply voltage is connected.
8. VOUT (Pin 8): Output voltage pin.
These pins collectively help regulate the voltage from a higher input to a lower output, providing a stable power supply for various electronic components.
Manufacturer
The LT3502EDC is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company specializing in the design and manufacturing of analog, mixed-signal, and digital signal processing integrated circuits. These products are used in a wide array of applications, including communications, computer, industrial, instrumentation, and military/aerospace markets.
Application
The LT3502EDC is a step-down switching regulator, commonly used in applications requiring efficient voltage conversion. Key areas include powering microcontrollers, FPGAs, and other digital devices in embedded systems, consumer electronics, telecommunications, and industrial equipment. Its compact size and efficiency make it suitable for battery-powered devices, portable gadgets, and automotive electronics where space and power efficiency are crucial.
Equivalent
The LT3502EDC is a step-down switching regulator. Equivalent products include:
1. Texas Instruments: LM2830X
2. Microchip Technology: MCP16311
3. ON Semiconductor: NCP1529
4. ROHM: BD9G101G
These alternatives vary in specifications such as output current, voltage range, and efficiency, so verify compatibility with your application requirements.
1. Texas Instruments: LM2830X
2. Microchip Technology: MCP16311
3. ON Semiconductor: NCP1529
4. ROHM: BD9G101G
These alternatives vary in specifications such as output current, voltage range, and efficiency, so verify compatibility with your application requirements.
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