Description
The GR8324N is designed to monitor the outputs of
switching power supply and generates the power
good signal to inform the system. It provides
over-voltage protection, under-voltage protection,
over-current protection, and power good signal
generating. The over-voltage protection (OVP) and
under-voltage protection (UVP) monitor 3.3V, 5V
and two 12V to protect the power supply and system.
Over-current protection (OCP) monitors IS33, IS5,
IS12A, IS12B input current sense. An adjustable
over-current trip point composed of Iref and a setting
resistor help users design the OCP easily. The
power-good feature issues a power-good signal
when the output is ready; therefore, the GR8324N
provides a reliable power supply environment for the
system.

Features

Over-voltage protection and lockout for 3.3V, 5V, and two 12V power supplies

Under-voltage protection and lockout for 3.3V, 5V, and two 12V power supplies

Over-current protection and lockout for 3.3V, 5V and two 12V power supplies

Open drain output for PGO and FPO/ pins

300mS power good delay

75mS delay for under-voltage and over-current protection

38mS for PSON/ de-bounce

73uS width noise de-glitches

Wide power supply voltage range

Special care for AC power off

Programmable protection circuit

Brown-in auto recovery

Applications

PC power supply

LCD TV power supply