HV7800 데이터 시트보기 (PDF) - Supertex Inc

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HV7800

High Side Current Monitor 8.0 to 450V Voltage Gain of 1

Supertex Inc 

Supertex inc.

HV7800

High Side Current Monitor

8.0 to 450V

Voltage Gain of 1

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 high-

side 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.

Typical Application Circuit

8V to 450V Input

VSENSE

ISENSE

RSENSE

RP (optional)

IN

LOAD

VOUT = VSENSE

HV7800

R

GND

OUT

VOUT

V

Doc.# DSFP-HV7800

A062813

Supertex inc.

www.supertex.com

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