L9947 Datasheet, PDF (1/13 Pages) STMicroelectronics – QUAD HALF-BRIDGE AND SINGLE HIGH-SIDE DRIVER

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L9947
QUAD HALF-BRIDGE AND SINGLE HIGH-SIDE DRIVER
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 DIAG-
NOSTIC
OVERTEMPERATURE DIAGNOSTIC BE-
FORE SWITCH OFF
OPEN LOAD DIAGNOSTIC
DESCRIPTION
The L9947 is a bus controlled power interface in-
BLOCK DIAGRAM
Multiwatt 15
ORDERING NUMBER: L9947S
tended 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 compat-
ible bidirectional parallel bus allows several inter-
faces connected on the same bus (multiplex sys-
tem). The full diagnostic information is available on
the bus.
April 1999
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