HV7802MG-G 데이터 시트보기 (PDF) - Supertex Inc

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HV7802MG-G

High Side Current Monitor 8V to 450V Configurable Output

Supertex Inc 

Supertex inc.

HV7802

High Side Current Monitor

8V to 450V

Configurable Output

Features

►►Supply voltage 8V to 450V

►►Configurable as a current or voltage output device

►►Maximum sense amplifier offset of 15mV

►►Max VSENSE of 500mV

►►Fast rise and fall time, from 700ns to 2.0µs

►►Maximum quiescent current of 50µA

Applications

►► SMPS current monitor

►► Battery current monitor

►► Motor control

General Description

The HV7802 high side current monitor IC contains a

transconductance amplifier which translates a high side

current measurement voltage into an output current with

resistor programmable transconductance gain. An optional

second resistor transforms this output current into an output

voltage with an overall voltage gain set by the ratio of the two

resistors.

The measurement voltage typically originates at a current

sense resistor, which is located in a “high side” circuit, for

example a circuit not directly associated with ground.

This monitor IC features a very wide input voltage range,

configurable gain, 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.

Typical Application Circuit

8V to 450V Input

IOUT = VSENSE/RA

VOUT = RB • IOUT

GV = RB/RA

VSENSE

ISENSE

RSENSE

RA

RP (optional)

IN

RA

LOAD

HV7802

R

GND

OUT

IOUT

VOUT

RB

V

Doc.# DSFP-HV7802

A062813

Supertex inc.

www.supertex.com

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