Supertex inc. HV7800 High Side Current Monitor 8.0 to 450V Voltage Gain of 1 Features General Description Supply voltages from 8V to 450V The HV7800 high side current monitor IC transfers a high- side current measurement voltage to its ground referenced Voltage output device output with an accurate voltage gain of one. The measurement Typical gain 11% voltage typically originates at a current sense resistor which Max V 500mV SENSE is located in a high side circuit, such as the positive supply Fast rise and fall time, 700ns to 2.0s line. Maximum quiescent current 50A 5-Lead SOT-23 Package 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 SMPS current monitor due to the wide input voltage range and the low quiescent Battery current monitor current of the HV7800. Motor controls Telecom Typical Application Circuit V I SENSE SENSE 8V to 450V Input R SENSE R (optional) P IN LOAD V = V HV7800 R OUT SENSE GND OUT V OUT V Doc. DSFP-HV7800 Supertex inc. A062813 www.supertex.comHV7800 Pin Configuration Ordering Information OUT GND Part Number Package Option Packing 4 5 HV7800K1-G 5-Lead SOT-23 2500/Reel -G denotes a lead (Pb)-free / RoHS compliant package Absolute Maximum Ratings 2 3 1 Parameter Value LOAD NC IN 1 V , V -0.5V to +460V IN LOAD 5-Lead SOT-23 1 V -0.5V to +10V OUT (top view) 2 V -0.5V to +5.0V SENSE Product Marking I 10mA LOAD Operating ambient temperature -40C to +85C Y = Last Digit of Year Sealed 7AYW W = Code for Week Sealed Operating junction temperature -40C to +125C = Green Packaging Storage temperature -65C to +150C Package may or may not include the following marks: Si or Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. Continuous 5-Lead SOT-23 operation of the device at the absolute rating level may affect device reliability. All voltages are referenced to device ground. Notes: Typical Thermal Resistance 1. Referenced to GND 2. V = V - V Package SENSE IN LOAD ja O 5-Lead SOT-23 253 C/W Note: Thermal testboard per JEDEC JESD51-7 Electrical Characteristics (T = 25C unless otherwise specified, V = 8V to 450V) A IN Sym Parameter Min Typ Max Units Conditions Supply V Supply voltage 8.0 - 450 V * --- IN I Quiescent supply current - - 50 A - V = 8.0V to 450V, V = 0mV Q IN SENSE Input and Output R OUT pin output resistance - 3.6 - k - --- OUT 0 - 15 - V = 0mV SENSE 79 - 121 - V = 100mV Output voltage SENSE V mV OUT 177 - 223 - V = 200mV SENSE 470 - 530 - V = 500mV SENSE Dynamic Characteristics - 0.7 - - V step 5.0mV to 500mV SENSE t Output rise time, 10% to 90% s RISE - - 2.0 - V step 0mV to 500mV SENSE t Output fall time, 90% to 10% - 0.7 2.0 s * V step 500mV to 0mV FALL SENSE * Values apply over the full temperature range Doc. DSFP-HV7800 Supertex inc. A062813 2 www.supertex.com