HV7801 Supertex inc. High Side Current Monitor 8.0 to 450V Voltage Gain of 5 Features General Description Supply voltage 8V to 450V The HV7801 high side current monitor IC transfers a high- side current measurement voltage to its ground referenced Voltage output device output with a voltage gain of five. The measurement voltage Typical gain 5.01% typically originates at a current sense resistor which is located Max V 500mV SENSE in a high side circuit, such as the positive supply line. Fast rise and fall time, 700ns to 2.0s Maximum quiescent current 50A This monitor IC features a very wide input voltage range, high accuracy of transfer ratio, small size, low component count, Applications low power consumption, ease of use, and low cost. Offline, SMPS current monitor battery, and portable applications can be served equally well Battery current monitor due to the wide input voltage range and the low quiescent Motor control current. Typical Application Circuit V I SENSE SENSE 8V to 450V Input R SENSE R (optional) P IN LOAD V = 5 V HV7801 R OUT SENSE GND OUT V OUT V Doc. DSFP-HV7801 Supertex inc. A062813 www.supertex.comHV7801 Pin Configuration Ordering Information OUT GND Part Number Package Option Packing 5 4 HV7801K1-G 5-Lead SOT-23 2500/Reel -G denotes a lead (Pb)-free / RoHS compliant package 2 1 3 Absolute Maximum Ratings LOAD NC IN Parameter Value 5-Lead SOT-23 V , V -0.5V to +460V (top view) IN LOAD V -0.5V to +10V OUT V -0.5V to +5.0V SENSE Product Marking I 10mA LOAD Y = Last Digit of Year Sealed Operating ambient temperature -40C to +85C 7BYW W = Code for Week Sealed = Green Packaging Operating junction temperature -40C to +125C Package may or may not include the following marks: Si or Storage temperature -65C to +150C 5-Lead SOT-23 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: 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 = 8V to 450V, V = 0mV Q IN SENSE Input and Output R OUT pin output resistance - 16.5 - k - --- OUT 0 - 65 V = 0mV SENSE 420 - 580 V = 100mV Output voltage SENSE V mV - OUT 913 - 1087 V = 200mV SENSE 2395 - 2605 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-HV7801 Supertex inc. A062813 2 www.supertex.com