NCP1578 Datasheet (ON Semiconductor) - Synchronous Step-Down Controller

NCP1578, Synchronous Step-Down Controller

Pin No.

Symbol Description 1 FPWM FPWM or Power Saving Control.

Logic high enables force PWM.

Logic low enables power saving operation.

2 EN_LDO LDO enable input.

The 5 V LDO is enabled if EN_LDO is high and disabled if it is low.

This pin can sustain voltage as high as VBAT.

3 OCSET I

NCP1578 Features

* soft-start sequence, UVLO for linear regulator and switcher, overvoltage protection, overcurrent protection, and thermal shutdown. The IC is packaged in QFN20. Features

* ăFixed 5.0 V/50 mA Internal Linear Regulator

* ăAdjustable PWM Output Voltage

* ă1.5% Accuracy 0.8 V Referen