LTC1156 Quad High Side Micropower MOSFET Driver with Internal Charge Pump DESCRIPTIO FEATURES n No External Charge Pump Components The LTC1156 quad High side gate driver allows using low n Fully Enhances N-Channel Power MOSFETs cost N-channel FETs for high side switching applications. n 16 Microamps Standby Current An internal charge pump boosts the gate drive voltage n 95 Microamps ON Current above the positive rail, fully enhancing an N-channel MOS n Wide Power Supply Range 4.5V to 18V switch with no external components. Micropower opera- n Controlled Switching ON and OFF Times tion, with 16A standby current and 95A operating n Replaces P-Channel High Side Switches current, allows use in virtually all systems with maximum n Compatible with Standard Logic Families efficiency. n Available in 16-pin SOL Package Included on chip is independent over-current sensing to provide automatic shutdown in case of short circuits. A APPLICATI S time delay can be added to the current sense to prevent false triggering on high in-rush current loads. n Laptop Computer Power Switching n The LTC1156 operates off of a 4.5V to 18V supply and is SCSI Termination Power Switching n well suited for battery-powered applications, particularly Cellular Telephone Power Management n where micropower sleep operation is required. P-Channel Switch Replacement n Battery Charging and Management The LTC1156 is available in both 16-pin DIP and 16-pin n Low Frequency H-Bridge Driver SOL packages. n Stepper Motor and DC Motor Control TYPICAL APPLICATI Laptop Computer Power Management Standby Supply Current 5V 100 + V = V = V = V = 0V IN1 IN2 IN3 IN4 90 0.1F *30m 10F T = 25C J 100k 80 V V S S 70 DS1 DS2 60 5V DS3 50 HARD DISK DS4 Si9956DY DRIVE 40 LTC1156 30 IN1 G1 FLOPPY DISK CONTROL DRIVE 20 IN2 G2 LOGIC 10 IN3 G3 OR P IN4 G4 DISPLAY 0 Si9956DY GND GND 0 5 10 15 20 SUPPLY VOLTAGE (V) PERIPHERAL LTC1156 G01 ALL COMPONENTS SHOWN ARE SURFACE MOUNT. MINIMUM PARTS COUNT SHOWN. CURRENT LIMITS CAN BE SET SEPARATELY AND TAILORED TO INDIVIDUAL LOAD CHARACTERISTICS. 1156 TA01 * IMS026 INTERNATIONAL MANUFACTURING SERVICES, INC. (401) 683-9700 1 SUPPLY CURRENT (A) O U UO ULTC1156 O ABS LUTEXAI U RATI GS Supply Voltage ....................................................... 22V Operating Temperature Range Input Voltage ..................... (V + 0.3V) to (GND 0.3V) LTC1156C ............................................. 0C to 70C S Gate Voltage ....................... (V + 24V) to (GND 0.3V) Storage Temperature Range ................. 65C to 150C S Current (Any Pin)................................................. 50mA Lead Temperature (Soldering, 10 sec.)................. 300C PACKAGE/ORDER I FOR ATIO TOP VIEW TOP VIEW ORDER PART ORDER PART NUMBER 1 16 G1 NUMBER GND 1 16 GND G1 2 15 DS1 IN1 2 15 IN1 DS1 3 14 G2 V 3 14 V G2 S LTC1156CN S LTC1156CS 4 13 DS2 IN2 4 13 IN2 DS2 5 12 DS3 5 12 IN3 IN3 DS3 6 11 G3 6 11 GND GND G3 7 10 DS4 7 10 IN4 IN4 DS4 8 9 G4 8 9 V V G4 S S S PACKAGE N PACKAGE 16-LEAD PLASTIC SOL 16-LEAD PLASTIC DIP T = 110C, = 120C/W T = 110C, = 130C/W JMAX JA JMAX JA Consult factory for Industrial and Military grade parts. ELECTRICAL CHARACTERISTICS V = 4.5V to 18V, T = 25C, unless otherwise noted. S A SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V Supply Voltage (Note 1) l 4.5 18 V S I Quiescent Current OFF V = 5V, V = 0V (Note 2) 16 40 A Q S IN I Quiescent Current ON V = 5V, V = 5V (Note 3) 95 125 A Q S IN I Quiescent Current ON V = 12V, V = 5V (Note 3) 180 400 A Q S IN V Input High Voltage l 2.0 V INH V Input Low Voltage l 0.8 V INL I Input Current 0V < V < V l 1.0 A IN IN S C Input Capacitance 5pF IN V Drain Sense Threshold 80 100 120 mV SEN Voltage l 75 100 125 mV I Drain Sense Input Current 0V < V < V l 0.1 A SEN SEN S V V Gate Voltage Above Supply V = 5V l 6.0 7.0 9.0 V GATE S S V = 6V l 7.5 8.3 15.0 V S V = 12V l 15 18 25 V S t Turn-ON Time V = 5V, C = 1000pF ON S GATE Time for V > V + 2V 50 250 750 s GATE S Time for V > V + 5V 200 1100 2000 s GATE S V = 12V, C = 1000pF S GATE Time for V > V + 5V 50 180 500 s GATE S Time for V > V + 10V 120 450 1200 s GATE S 2 U WU U W W W