APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com

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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

• INTERNAL PWM GENERATION

APPLICATIONS

• BRUSH TYPE MOTOR CONTROL

• CLASS D SWITCHMODE AMPLIFIER

• REACTIVE LOADS

• MAGNETIC COILS (MRI)

• ACTIVE MAGNETIC BEARING

• VIBRATION CANCELLING

DESCRIPTION

The SA50 is a pulse width modulation amplifier that can sup-

ply 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 PWM circuitry is internal as well,

leaving the user to only provide an analog signal for the motor

speed/direction, or audio signal for switchmode audio amplifica-

tion. The SA50 is packaged in a space efficient isolated 8-pin

TO-3 that can be directly connected to a heatsink.

BLOCK DIAGRAM

TYPICAL APPLICATION

EXTERNAL CONNECTIONS

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8-PIN TO-3

PACKAGE STYLE CE