Current Monitor. HV7800 Datasheet

HV7800 Monitor. Datasheet pdf. Equivalent

Part HV7800
Description High Side Current Monitor
Feature Supertex inc. HV7800 High Side Current Monitor 8.0 to 450V Voltage Gain of 1 Features ►►Supply vo.
Manufacture Supertex
Datasheet
Download HV7800 Datasheet




HV7800
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)
VOUT = VSENSE
IN LOAD
HV7800
GND
OUT
VOUT
V
R
Doc.# DSFP-HV7800
A062813
Supertex inc.
www.supertex.com



HV7800
Ordering Information
Part Number
Package Option Packing
HV7800K1-G
5-Lead SOT-23 2500/Reel
-G denotes a lead (Pb)-free / RoHS compliant package
Pin Configuration
OUT
5
GND
4
HV7800
Absolute Maximum Ratings
Parameter
VIN, VLOAD 1
V1
OUT
V2
SENSE
ILOAD
Operating ambient temperature
Value
-0.5V to +460V
-0.5V to +10V
-0.5V to +5.0V
±10mA
-40°C to +85°C
Operating junction temperature
-40°C to +125°C
Storage temperature
-65°C to +150°C
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.
Notes:
1. Referenced to GND
2. VSENSE = VIN - VLOAD
1 23
LOAD NC IN
5-Lead SOT-23
(top view)
Product Marking
7AYW
Y = Last Digit of Year Sealed
W = Code for Week Sealed
= “Green” Packaging
Package may or may not include the following marks: Si or
5-Lead SOT-23
Typical Thermal Resistance
Package
θja
5-Lead SOT-23
253OC/W
Note:
Thermal testboard per JEDEC JESD51-7
Electrical Characteristics (TA = 25°C unless otherwise specified, VIN = 8V to 450V)
Sym Parameter
Min Typ Max Units Conditions
Supply
VIN Supply voltage
IQ Quiescent supply current
Input and Output
ROUT
OUT pin output resistance
VOUT
Output voltage
Dynamic Characteristics
tRISE Output rise time, 10% to 90%
tFALL Output fall time, 90% to 10%
* Values apply over the full temperature range
8.0 - 450 V * ---
- - 50 µA - VIN = 8.0V to 450V, VSENSE = 0mV
- 3.6 - kΩ - ---
0 - 15
- VSENSE = 0mV
79 - 121 mV - VSENSE = 100mV
177 - 223
- VSENSE = 200mV
470 - 530
- VSENSE = 500mV
- 0.7 -
µs - VSENSE step 5.0mV to 500mV
- - 2.0
- VSENSE step 0mV to 500mV
-
0.7 2.0
µs * VSENSE step 500mV to 0mV
Doc.# DSFP-HV7800
A062813
Supertex inc.
2 www.supertex.com







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