ADP1864AUJZ-R7 Datasheet PDF - ADI

●The ADP1864 series constant-frequency current-mode step-down DC-to-DC Controller. It drives a P-channel MOSFET that regulates an output voltage as low as 0.8V with ±1.25% accuracy, for up to 5A load currents, from input voltages as high as 14V. The ADP1864 provides system flexibility by allowing accurate setting of the current limit with an external resistor and the output voltage is easily adjustable using two external resistors. The ADP1864 includes an internal soft-start to allow quick power-up while preventing input inrush current. Additional safety features include short-circuit protection, output overvoltage protection and input undervoltage protection. Current-mode control provides fast and stable load transient performance, while the 580kHz operating frequency allows a small inductor to be used in the system. To further the life of a battery source, the controller turns on the external P-channel MOSFET 100% of the duty cycle during dropout.

● Internal soft-start

● 100% Duty cycle for low dropout voltage

● Current-mode operation for good line and load transient response

● Short-circuit and overvoltage protection

● Up to 94% efficiency

● Pin-to-pin compatible with LTC1772 and LTC3801

● 0.8V ±1.25% Reference accuracy over temperature

● 7µA Shutdown supply current

● 235µA Quiescent supply current