Features
► Supply voltages from 8V to 450V
► Voltage output device
► Typical gain 1±1%
► Max VSENSE 500mV
► Fast rise and fall time, 700ns to 2.0µs
► Maximum quiescent current 50µA
► 5-Lead SOT-23 Package

Applications
► SMPS current monitor
► Battery current monitor
► Motor controls
► Telecom

General Description
The HV7800 high side current monitor IC transfers a highside current measurement voltage to its ground referenced
output with an accurate voltage gain of one. The measurement
voltage typically originates at a current sense resistor which
is located in a “high side” circuit, such as the positive supply
line.
This monitor IC features a very wide input voltage range, high
accuracy of transfer ratio, small size, low component count,
low power consumption, ease of use, and low cost. Offline,
battery and portable applications can be served equally well
due to the wide input voltage range and the low quiescent
current of the HV7800.