HV816K6-G Datasheet, PDF (1/5 Pages) Supertex, Inc – High Side Current Monitor

HV7801
High Side Current Monitor
8.0 to 450V, Gain of 5
Features
► Supply voltage 8.0 to 450V
► Voltage output device
► Typical gain 5.0±1%
► Max V_SENSE 500mV
► Fast rise and fall times, 700ns to 2.0µs
► Maximum quiescent current 50µA
Applications
► SMPS current monitor
► Battery current monitor
► Motor control
General Description
The HV7801 high side current monitor IC transfers a high-
side 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
applications, 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
V_OUT = 5 • V_{SENS E}
V_SENSE
I_SENSE
IN
LOAD
HV7801
GND
OUT
V_OUT
V
● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: [phone] ● www.supertex.com