LTC3808 (4)
The LTC3808 is available from Analog Devices at Xecor. Designed for synchronous step-down DC/DC voltage regulation, the LTC3808 offers high efficiency, low EMI, and programmable output voltage tracking. Available in 16-SSOP and thermally enhanced DFN packages, it is ideal for portable devices, notebook computers, PDAs, and distributed DC power systems. Whether used in one or two-cell lithium-ion powered devices or portable instruments, this series ensures excellent line and load transient response, low power consumption, and scalability for demanding applications. Xecor is an authorized distributor for Analog Devices. Please view our extensive selection of the LTC3808 series below.
| Part Number | Description | Package | Inventory | Add To Bom |
|---|---|---|---|---|
| LTC3808EGN#TRPBF | Reliable current source for demanding applicatio | SSOP-16 | 5,011 | |
| LTC3808EDE#PBF | DC/DC Cntrlr Single-OUT Step Down 750kHz 14-Pin DFN EP Tube | DFN-14 | 5,459 | |
| LTC3808EGN#PBF | DC/DC Cntrlr Single-OUT Step Down 750kHz 16-Pin SSOP N Tube | SSOP-16 | 6,017 | |
| LTC3808EDE#TRPBF | LTC3808EDE#TRPBF is a power management integrated circuit with a DC/DC converter function, supporting input voltage range from 2 | DFN-14 | 2,311 |
Key Featrues
Programmable Output Voltage Tracking: This feature allows the output voltage to be dynamically adjusted, enabling precise control over power delivery. It is particularly useful in applications requiring multiple voltage rails, such as portable devices, ensuring optimal performance and efficiency across varying load conditions.
Spread Spectrum Modulation for Low Noise: By spreading the switching frequency spectrum, this feature reduces electromagnetic interference (EMI), making the device suitable for noise-sensitive applications like communication equipment and medical devices. It enhances system reliability and compliance with EMI standards.
Constant Frequency Current Mode Operation: This ensures excellent line and load transient response, improving stability and efficiency in dynamic load environments. It is ideal for applications like notebook computers and portable instruments, where rapid load changes are common.
Wide Input and Output Voltage Range (2.75V to 9.8V Input, 0.6V to VIN Output): The wide operating range makes the controller versatile for use in various power systems, including one or two-cell lithium-ion battery-powered devices. It supports a broad range of applications, from low-power portable electronics to distributed DC power systems.
True PLL for Frequency Locking or Adjustment (250kHz to 750kHz): The phase-locked loop (PLL) allows synchronization with an external clock or adjustment of the switching frequency, reducing noise and improving system compatibility. This is beneficial in multi-rail power systems or applications requiring precise timing control.
Spread Spectrum Modulation for Low Noise: By spreading the switching frequency spectrum, this feature reduces electromagnetic interference (EMI), making the device suitable for noise-sensitive applications like communication equipment and medical devices. It enhances system reliability and compliance with EMI standards.
Constant Frequency Current Mode Operation: This ensures excellent line and load transient response, improving stability and efficiency in dynamic load environments. It is ideal for applications like notebook computers and portable instruments, where rapid load changes are common.
Wide Input and Output Voltage Range (2.75V to 9.8V Input, 0.6V to VIN Output): The wide operating range makes the controller versatile for use in various power systems, including one or two-cell lithium-ion battery-powered devices. It supports a broad range of applications, from low-power portable electronics to distributed DC power systems.
True PLL for Frequency Locking or Adjustment (250kHz to 750kHz): The phase-locked loop (PLL) allows synchronization with an external clock or adjustment of the switching frequency, reducing noise and improving system compatibility. This is beneficial in multi-rail power systems or applications requiring precise timing control.
Applications
Portable Power Management for Notebooks and PDAs: The LTC3808 is ideal for managing power in portable devices like notebooks and PDAs. Its synchronous step-down architecture and low EMI features ensure efficient power conversion, while its wide input voltage range (2.75V to 9.8V) makes it suitable for one or two-cell lithium-ion battery-powered devices, providing stable and reliable power in compact form factors.
Distributed DC Power Systems: The LTC3808 is well-suited for distributed DC power systems, where precise voltage regulation and synchronization are critical. Its programmable output voltage tracking and constant frequency current mode operation ensure excellent transient response and stability, making it ideal for applications requiring multiple regulated power rails in industrial and telecommunications environments.
Portable Instrumentation: The LTC3808 is an excellent choice for portable instrumentation, such as handheld meters or data loggers. Its low quiescent current (105 µA) and micropower shutdown mode (IQ = 9 µA) extend battery life, while its spread spectrum modulation reduces EMI, ensuring accurate measurements and reliable operation in sensitive measurement environments.
Low-Noise Power Supplies for Medical Devices: The LTC3808 is ideal for powering medical devices where low noise and high efficiency are paramount. Its spread spectrum modulation and synchronous rectification minimize electromagnetic interference, while its wide output voltage range (0.6V to VIN) and overvoltage protection ensure safe and reliable operation in critical healthcare applications.
These applications highlight the versatility and advanced features of the LTC3808, making it a robust solution for a wide range of power management needs.
Distributed DC Power Systems: The LTC3808 is well-suited for distributed DC power systems, where precise voltage regulation and synchronization are critical. Its programmable output voltage tracking and constant frequency current mode operation ensure excellent transient response and stability, making it ideal for applications requiring multiple regulated power rails in industrial and telecommunications environments.
Portable Instrumentation: The LTC3808 is an excellent choice for portable instrumentation, such as handheld meters or data loggers. Its low quiescent current (105 µA) and micropower shutdown mode (IQ = 9 µA) extend battery life, while its spread spectrum modulation reduces EMI, ensuring accurate measurements and reliable operation in sensitive measurement environments.
Low-Noise Power Supplies for Medical Devices: The LTC3808 is ideal for powering medical devices where low noise and high efficiency are paramount. Its spread spectrum modulation and synchronous rectification minimize electromagnetic interference, while its wide output voltage range (0.6V to VIN) and overvoltage protection ensure safe and reliable operation in critical healthcare applications.
These applications highlight the versatility and advanced features of the LTC3808, making it a robust solution for a wide range of power management needs.
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