AUIR3242STRXUMA1 Infineon

AUIR3242S LOW QUIESCENT CURRENT BACK TO BACK MOSFET DRIVER Features Very low quiescent current on and off state Back to back configuration Boost converter with integrated diode Standard level gate voltage Input active low Under voltage lockout with diagnostic Wide operating voltage 3-36V Ground loss protection Lead-Free, Halogen Free, RoHS compliant Potential applications Power switch for Stop and Start board net stabilizer Battery switch Product validation Standard Pack Base Part Package Type Complete Part Number Number Form Quantity AUIR3242S SOIC8 Tape and reel 2500 AUIR3242STR Description The AUIR3242S is a high side MOSFET driver for back to back topology targeting back to back switch. It features a very low quiescent current both on and off state. The AUIR3242S is a combination of a boost DC/DC converter using an external inductor and a gate driver. It drives standard level MOSFET even at low battery voltage. The input controls the gate voltage. The AUIR3242S integrates an under voltage lock out protection to prevent to drive the MOSFET in linear mode. Please read the Important Notice and Warnings at the end of this document www.infineon.com Page 1 of 25 2018-07-26 AUIR3242S LOW QUIESCENT CURRENT BACK TO BACK MOSFET DRIVER Table of contents Table of contents ............................................................................................................................ 2 1 Typical Connection ................................................................................................................. 3 2 Block diagram ........................................................................................................................ 5 2.1 Input Circuitry .......................................................................................................................................... 5 2.2 Current definition .................................................................................................................................... 6 3 Pin configuration ................................................................................................................... 7 3.1 Pin assignement ...................................................................................................................................... 7 3.2 Pin definition and functions .................................................................................................................... 7 4 General product characteristics ............................................................................................... 8 4.1 Absolute Maximum Ratings .................................................................................................................... 8 5 Static Electrical Characteristics ............................................................................................... 9 6 Timing Converter Characteristics ............................................................................................ 10 6.1 Timing converter definition .................................................................................................................. 10 7 Switching Characteristics ...................................................................................................... 11 8 General Description ............................................................................................................... 12 8.1 Boost DC/DC converter ......................................................................................................................... 12 8.2 Low quiescent current operation when On.................................................................................... 12 8.3 Peak current control ............................................................................................................................. 13 8.4 Output capacitor choice ....................................................................................................................... 14 8.5 Minimum operating voltage.................................................................................................................. 14 8.6 Over-Voltage protection........................................................................................................................ 14 8.7 Under voltage lockout - Diagnostic ...................................................................................................... 14 8.8 Analog Diagnostic: Output current measurement ............................................................................... 16 8.9 Digital diagnostic ................................................................................................................................... 16 8.10 Power On Reset ..................................................................................................................................... 17 9 Typical Performance Characteristics ....................................................................................... 18 10 Case Outline SO8 ................................................................................................................. 20 11 Tape & Reel SO8 .................................................................................................................. 21 12 Part Marking Information ....................................................................................................... 22 13 Revision history .................................................................................................................... 24 2 of 25 2018-07-26