MAX1644 2A, Low-Voltage, Step-Down Regulator With Synchronous Rectification And Internal Switches

The MAX1644 constant-off-time, PWM Step-down DC-DC Converter is ideal for use in applications such as PC cards, CPU daughter cards, and desktop computer bus-termination boards. The device features internal synchronous rectification for high efficiency and reduced component count. It requires no external Schottky Diode The internal 0.10 PMOS power Switch and 0.10 NMOS synchronous-rectifier Switch easily deliver continuous load currents up to 2A. The MAX1644 produces a preset +3.3V or +2.5V output voltage or an adjustable output from +1.1V to VIN. It achieves efficiencies as high as 95%.
The MAX1644 uses a unique current-mode, constant-off-time, PWM control scheme, which includes an Idle Mode to maintain high efficiency during light-load operation. The programmable constant-off-time architecture sets switching frequencies up to 350kHz, allowing the user to optimize performance trade-offs between efficiency, output switching noise, component size, and cost. The device also features an adjustable soft-start to limit surge currents during start-up, a 100% duty cycle mode for low-dropout operation, and a low-power shutdown mode that disconnects the input from the output and reduces supply current below 1A. The MAX1644 is available in a 16-pin SSOP package.
By Maxim Integrated Products
MAX1644 's PackagesMAX1644 's pdf datasheet
MAX1644EAE




MAX1644 Pinout, Pinouts
MAX1644 pinout,Pin out
This is one package pinout of MAX1644,If you need more pinouts please download MAX1644's pdf datasheet.

MAX1644 Application circuits
MAX1644 circuits
This is one application circuit of MAX1644,If you need more circuits,please download MAX1644's pdf datasheet.


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