DESCRIPTION

The L9947 is a bus controlled power interface intended for automotive applications realized in multipower BCD60II technology. Up to three DC motors and one grounded resistive load can be driven with its four half-bridge and one high-side driver power outputs. The microcomputer compatible bidirectional parallel bus allows several interfaces connected on the same bus (multiplex system). The full diagnostic information is available on the bus.

■ LOW CONSUMPTION IN STANDBY MODE

(<100µA AT ROM TEMP; < 150µA AT 130°C)

■ TWO HALF BRIDGES FOR 3A LOAD

(RDSON = 0.25Ω TYP; Tj = 25°C)

■ TWO HALF BRIDGES FOR 0.5A LOAD

(RDSON = 2.5Ω TYP; Tj = 25°C)

■ HIGH SIDE DRIVER FOR 2.5A LOAD

(RDSON = 0.45Ω TYP; Tj = 25°C)

■ DIRECT CONTROLLED BY µC (MULTIPLEX SYSTEM)

■ OUTPUT HIGH/LOW LEVEL DIAGNOSTIC

■ OVERCURRENT SWITCH OFF AND DIAGNOSTIC

■ OVERTEMPERATURE DIAGNOSTIC BEFORE SWITCH OFF

■ OPEN LOAD DIAGNOSTIC