LTC1154 High Side Micropower MOSFET Driver Fea T Descrip T n Fully Enhances N-Channel Power MOSFETs The LTC 1154 single high side gate driver allows using low n 8A I Standby Current cost N-channel FETs for high side switching applications. An Q n 85A I ON Current internal charge pump boosts the gate drive voltage above Q n No External Charge Pump Capacitors the positive rail, fully enhancing an N-channel MOS switch n 4.5V to 18V Supply Range with no external components. Micropower operation, with n Short-Circuit Protection 8A standby current and 85A operating current, allows n Thermal Shutdown via PTC Thermistor use in virtually all systems with maximum efficiency. n Status Output Indicates Shutdown Included on chip is programmable overcurrent sensing. n Available in 8-Pin SOIC and PDIP Packages A time delay can be added to prevent false triggering on high inrush current loads. An active high shutdown input a T is also provided and interfaces directly to a standard PTC thermistor for thermal shutdown. An open-drain output n Laptop Computer Power Switching is provided to report switch status to the P. An active n SCSI Termination Power Switching low enable input is provided to control multiple switches n Cellular Telephone Power Management in banks. n Battery Charging and Management n The LTC1154 is available in both 8-pin DIP and 8-pin High Side Industrial and Automotive Switching n SOIC packages. Stepper Motor and DC Motor Control L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Typical a T Ultralow Voltage Drop High Side Switch with Standby Supply Current Short-Circuit Protection 50 V = 0V IN 5V 45 T = 25C J 51k 40 0.036* 2.7A MAX IN V S 35 0.1F** 200k** 30 P EN DS 25 LTC1154 20 IRLR024 STATUS G 15 10 GND SD 5V LOAD 5 0 0 5 10 15 20 LTC1154 TA01 ALL COMPONENTS SHOWN ARE SURFACE MOUNT. SUPPLY VOLTAGE (V) * IMS026 INTERNATIONAL MANUFACTURING SERVICE, INC. (401) 683-9700 LTC1153 TA02 ** NOT REQUIRED IF LOAD IS RESISTIVE OR INDUCTIVE. 1154fc 1 For more information www.linear.com/LTC1154 SUPPLY CURRENT (A) ion pplica ions pplica ion uresLTC1154 a Te Maxi Mu M r a T (Note 1) Supply Voltage ..........................................................22V Operating Temperature Input Voltage .......................(V + 0.3V) to (GND 0.3V) LTC1154C ................................................. 0C to 70C S Enable Input Voltage ...........(V + 0.3V) to (GND 0.3V) LTC1154H .......................................... 40C to 150C S Gate Voltage .........................(V + 24V) to (GND 0.3V) Storage Temperature Range .................. 65C to 150C S Status Output Voltage ...............................................15V Lead Temperature (Soldering, 10 sec.) ..................300C Current (Any Pin) ...................................................50mA p in c F T TOP VIEW TOP VIEW IN 1 8 V IN 1 8 V S S EN 2 DS 2 7 DS 7 EN STATUS 3 6 G STATUS 3 6 G GND SD 4 5 GND 4 5 SD N8 PACKAGE S8 PACKAGE 8-LEAD PLASTIC DIP 8-LEAD PLASTIC SOIC T = 100C, = 130C/W T = 100C, = 150C/W JMAX JA JMAX JA Der in F Ma Tion (