DESCRIPTION
The SA51 is a pulse width modulation amplifier that can supply 5A continuous current to the load. The full bridge amplifier can be operated over a wide range of supply voltages. All of the drive/control circuitry for the lowside and highside switches are internal to the hybrid. The user provides a TTL compatible PWM signal for simultaneous amplitude and direction control in four quadrant mode. The internal circuitry will provide proper deadtime protection for each half bridge. All N-channel FETs mean the best efficiency for the size, both in terms of on-resistance and switching capability. For an idle/sleep mode or for fault protection, a TTL compatible disable pin is provided so as to shut down all four transistors. The SA51 is packaged in a space efficient isolated 8-pin TO-3 that can be directly connected to a heatsink.

FEATURES
 • LOW COST COMPLETE H-BRIDGE
 • SELF-CONTAINED SMART LOWSIDE/HIGHSIDE DRIVE CIRCUITRY
 • SINGLE SUPPLY OPERATION
 • WIDE SUPPLY RANGE: UP TO 80V
 • 5A CONTINUOUS OUTPUT
 • HERMETIC SEALED PACKAGE
 • HIGH EFFICIENCY: 95%
 • FOUR QUADRANT OPERATION, TORQUE CONTROL CAPABILITY

APPLICATIONS
 • BRUSH TYPE MOTOR CONTROL
 • CLASS D SWITCHMODE AMPLIFIER
 • REACTIVE LOADS
 • MAGNETIC COILS (MRI)
 • ACTIVE MAGNETIC BEARING
 • VIBRATION CANCELLING