NCP1589L Datasheet (ON Semiconductor) - Low Voltage Synchronous Buck Controller

NCP1589L, Low Voltage Synchronous Buck Controller

Pin No.

Symbol Description 1 BOOT Supply rail for the floating top gate driver.

To form a boost circuit, use an external diode to bring the desired input voltage to this pin (cathode connected to BOOT pin).

Connect a capacitor (CBOOT) between this pin and the LX pin.

Typical values for CBOOT r

NCP1589L Low Voltage Synchronous Buck Controller with Light Load Efficiency and Transient Enhancement The NCP1589L is a low cost PWM controller designed to operate from a 5 V or 12 V supply.

This device is capable of producing an output voltage as low as 0.8 V and converting voltage from as low as 2.5 V.

It is easy to operate and provides an optimal level of integration to reduce size and cost of the power supply.

It operates in Ramp Pulse Modulation mode for superior load step and release resp

NCP1589L Features

* such as adaptive non

* overlap circuitry and diode emulation. It normally operates at a range of 200

* 500 kHz in continuous current conduction mode, which reduces with current at light load for further power saving. Protection features include programmable overcurrent protection, output