Datasheet Microchip HV7801

Supertex inc. HV7801 High Side Current Monitor
8.0 to 450V
Voltage Gain of 5
Features General Description в–єв–є Supply voltage 8V to 450V
в–єв–є Voltage output device
в–єв–є Typical gain 5.0В±1%
в–єв–є Max VSENSE 500mV
в–єв–є Fast rise and fall time, 700ns to 2.0Вµs
в–єв–є Maximum quiescent current 50ВµA The HV7801 high side current monitor IC transfers a highside current measurement voltage to its ground referenced
output with a voltage gain of five. 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. Applications в–єв–є SMPS current monitor
в–єв–є Battery current monitor
в–єв–є Motor control Typical Application Circuit
VSENSE 8V to 450V Input ISENSE RSENSE IN
V OUT = 5 V SENSE RP (optional) LOAD HV7801
GND R OUT …