General Description

The HV7801 high side current monitor IC transfers a high side current measurement voltage to its ground referenced output with an accurate voltage gain of fi ve. The measurement voltage typically originates at a current sense resistor which is located in a “high side” circuit, such as the positive supply line.

Features

Supply voltage 8V to 450V

Voltage output device

Typical gain 5±1

Max VSENSE 500mV

Fast rise and fall times, 700ns to 2µs

Maximum quiescent current 50µA

Applications

SMPS current monitor

Battery current monitor

Motor control