HV7802

Features:

·Supply voltage 8V to 450V
·Confi gurable as a current or voltage output device
·Maximum sense amplifi er offset of 5mV
·Max V_SENSE of 500mV
·Fast rise and fall times, from 700ns to 1.4µs
·Maximum quiescent current of 50µA



Application

·SMPS current monitor
·Battery current monitor
·Motor control



Pinout




Specifications

Parameter	Value
VIN, VLOAD	-0.5V to +450V
VOUT	-65 to +150
VSENSE	-0.5V to +5.0V
ILOAD	-0.5V to +5.0V
Operating ambient temperature	0 to +70
Operating junction temperature	-40 to +125
Storage temperature	-65 to +150

Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. Continuous operation of the device at the absolute rating level may affect device reliability. All voltages are referenced to device ground.



Description

The HV7802 high side current monitor IC contains a transconductance amplifi er 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 HV7802, for example a circuit not directly associated with ground.

This monitor IC HV7802 features a very wide input voltage range, confi gurable gain, small size, low component count, low power consumption, ease of use, and low cost. Offl ine applications, battery, and portable applications can be served equally well due to the wide input voltage range and the low quiescent current.