MAX1644 (3)
The MAX1644 is available from Maxim Integrated at Xecor. Designed for low-voltage, step-down regulation with synchronous rectification, the MAX1644 offers high efficiency (up to 95%), internal PMOS and NMOS switches, and adjustable output voltage from 1.1V to VIN. Available in a 16-SSOP package, it is ideal for applications such as PC cards, CPU daughter cards, desktop bus-termination boards, and notebook computers. Whether used in CPU I/O supplies or +5V to +3.3V/+2.5V conversion, this series ensures reliable performance, scalability, and efficiency for demanding applications. Xecor is an authorized distributor for Maxim Integrated. Please view our extensive selection of the MAX1644 series below.
| Part Number | Description | Package | Inventory | Add To Bom |
|---|---|---|---|---|
| MAX1644EAE | This product, MAX1644EAE+, comes in a SSOP-16 package and operates at 350KHZ | SSOP-16 | 7,321 | |
| MAX1644EAE+ | This product, MAX1644EAE+, comes in a SSOP-16 package and operates at 350KHZ | SSOP-16 | 2,143 | |
| MAX1644EAE+T | MAX1644EAE+T: Efficient low-voltage step-down regulator | SSOP-16 | 3,368 |
Key Featrues
High Efficiency (Up to 95%): The MAX1644 achieves up to 95% efficiency, making it ideal for power-sensitive applications such as notebooks, subnotebooks, and CPU daughter cards. This high efficiency reduces power loss and heat generation, improving overall system performance and battery life.
Internal Synchronous Rectification: The device integrates internal PMOS and NMOS switches with low on-resistance (70mΩ at 4.5V and 100mΩ at 3V), eliminating the need for an external Schottky diode. This reduces component count, simplifies design, and enhances efficiency in step-down voltage conversion.
Adjustable and Pin-Selectable Output Voltage: The MAX1644 supports adjustable output voltages from +1.1V to VIN and pin-selectable fixed outputs of +3.3V or +2.5V. This flexibility allows it to cater to a wide range of applications, including PC cards, bus-termination boards, and CPU I/O supplies.
Programmable Constant-Off-Time Operation: The device features programmable constant-off-time control, enabling stable operation across varying load conditions. This ensures reliable performance and minimizes output voltage ripple, making it suitable for high-precision applications.
Thermal Shutdown and Short-Circuit Protection: The MAX1644 includes built-in thermal shutdown and output short-circuit protection, safeguarding the device and connected components from damage due to overheating or fault conditions. This enhances system reliability and longevity in demanding environments.
Internal Synchronous Rectification: The device integrates internal PMOS and NMOS switches with low on-resistance (70mΩ at 4.5V and 100mΩ at 3V), eliminating the need for an external Schottky diode. This reduces component count, simplifies design, and enhances efficiency in step-down voltage conversion.
Adjustable and Pin-Selectable Output Voltage: The MAX1644 supports adjustable output voltages from +1.1V to VIN and pin-selectable fixed outputs of +3.3V or +2.5V. This flexibility allows it to cater to a wide range of applications, including PC cards, bus-termination boards, and CPU I/O supplies.
Programmable Constant-Off-Time Operation: The device features programmable constant-off-time control, enabling stable operation across varying load conditions. This ensures reliable performance and minimizes output voltage ripple, making it suitable for high-precision applications.
Thermal Shutdown and Short-Circuit Protection: The MAX1644 includes built-in thermal shutdown and output short-circuit protection, safeguarding the device and connected components from damage due to overheating or fault conditions. This enhances system reliability and longevity in demanding environments.
Applications
Desktop Bus-Termination Boards: The MAX1644 is ideal for providing stable and efficient power conversion in desktop bus-termination boards. Its synchronous rectification and internal switches ensure high efficiency and reduced component count, making it suitable for maintaining precise voltage levels in high-speed data communication systems.
CPU Daughter Card Supply: The MAX1644 is perfect for powering CPU daughter cards, offering adjustable output voltages from 1.1V to 5.5V. Its high efficiency and low operating supply current make it an excellent choice for ensuring reliable and efficient power delivery in compact computing environments.
Notebook and Subnotebook Computers: The MAX1644 is well-suited for notebook and subnotebook computers, providing efficient step-down voltage conversion from 5V to 3.3V or 2.5V. Its compact 16-SSOP package and high efficiency make it ideal for space-constrained and power-sensitive portable computing applications.
CPU I/O Supplies: The MAX1644 is ideal for supplying power to CPU I/O interfaces, offering precise and adjustable output voltages. Its internal synchronous rectification and low on-resistance switches ensure high efficiency and reliable performance, making it suitable for demanding computing environments.
CPU Daughter Card Supply: The MAX1644 is perfect for powering CPU daughter cards, offering adjustable output voltages from 1.1V to 5.5V. Its high efficiency and low operating supply current make it an excellent choice for ensuring reliable and efficient power delivery in compact computing environments.
Notebook and Subnotebook Computers: The MAX1644 is well-suited for notebook and subnotebook computers, providing efficient step-down voltage conversion from 5V to 3.3V or 2.5V. Its compact 16-SSOP package and high efficiency make it ideal for space-constrained and power-sensitive portable computing applications.
CPU I/O Supplies: The MAX1644 is ideal for supplying power to CPU I/O interfaces, offering precise and adjustable output voltages. Its internal synchronous rectification and low on-resistance switches ensure high efficiency and reliable performance, making it suitable for demanding computing environments.
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