TC4403EPA Microchip

TC4403 1.5A High-Speed, Floating Load Driver Features General Description Low Quiescent Current: 300A Max The TC4403 is a modified version of the TC4425 driver, intended to drive floating or isolated loads requiring Capacitive Inputs With 300mV Hysteresis high-current pulses. The load is intended to be con- Both Inputs Must Be Driven to Drive Load nected between the outputs without other reference to Low Output Leakage supply or ground. Then, only when both logic inputs High Peak Current Capability and the V input are energized, is power supplied to DD Fast Output Rise Time the load. This construction allows the implementation of a wide variety of redundant input controllers. Outputs Individually Testable The low OFF-state output leakage and independence Applications of the two half-circuits permit a wide variety of testing schemes to be utilized to assure functionality. The high Isolated Load Drivers peak current capability, short internal delays, and fast Pulsers output rise and fall times ensure that sufficient power Safety Interlocks will be available to the load when it is needed. The TTL and CMOS compatible inputs allow operation from a Device Selection Table wide variety of input devices. The ability to swing the inputs negative without affecting device performance Part Number Package Temp. Range allows negative biases to be placed on the inputs for TC4403CPA 8-Pin PDIP 0C to +70C greater safety. In addition, the capacitive nature of the inputs allows the use of series resistors on the inputs TC4403EPA 8-Pin PDIP -40C to +85C for extra noise suppression. TC4403MJA 8-Pin CERDIP -55C to +125C The TC4403 is built for outstanding ruggedness and reliability in harsh applications. Input voltage excur- Package Type sions above the supply voltage or below ground are 8-Pin PDIP/CERDIP clamped internally without damaging the device. The output stages are power MOSFETs with high-speed body diodes to prevent damage to the driver from NC18 NC inductive kickbacks. IN (V )27 OUT (V ) DD DD TC4403 GND36 V DD IN (GND)45 OUT (GND) 2002-2012 Microchip Technology Inc. DS21417C-page 1TC4403 Functional Block Diagram 6 V DD 7 OUT (V ) DD 300mV Input Hysteresis 5 OUT (GND) 4 IN (GND) 2 IN (V ) DD TC4403 3 GND Effective Input C = 20pF (Each Input) Typical Application +15V TC4422 Power 66 R T 2 7 Fire R LOAD TC4403 R T 4 5 Arm 33 1 M 1 M -15V DS21417C-page 2 2002-2012 Microchip Technology Inc.