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L9947LSTN/a9850avaiQUAD HALF-BRIDGE AND SINGLE HIGH-SIDE DRIVER
L9947SSTN/a1500avaiQUAD HALF-BRIDGE AND SINGLE HIGH-SIDE DRIVER
L9947SST ?N/a162avaiQUAD HALF-BRIDGE AND SINGLE HIGH-SIDE DRIVER


L9947L ,QUAD HALF-BRIDGE AND SINGLE HIGH-SIDE DRIVERELECTRICAL CHARACTERISTICS ° (VS = 8 to 16V; VCC = 4.5 to 5.5V; Tj = -40 to 150 C;unless other-wise ..
L9947S ,QUAD HALF-BRIDGE AND SINGLE HIGH-SIDE DRIVERfunctional description (pag....)|I | Output Current Limitation to 0.67 2 AOUT2 Supply or GND|I | Ou ..
L9947S ,QUAD HALF-BRIDGE AND SINGLE HIGH-SIDE DRIVERapplications realized inOVERCURRENT SWITCH OFF AND DIAG-multipower BCD60II technology. Up to three ..
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L9947L-L9947S
QUAD HALF-BRIDGE AND SINGLE HIGH-SIDE DRIVER
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-
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.
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
THERMAL DATA
PIN CONNECTION
L9947

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ELECTRICAL CHARACTERISTICS (VS = 8 to 16V; VCC = 4.5 to 5.5V; Tj = -40 to 150°C;unless other-
wise specified; the voltage are refered to GND and currents are assumed positive, when the current
flows into the pin.)
SUPPLY:
CONTROL INPUTS: CNS, R/WN, MODE
DATA INPUT: D0 - D3
DATA OUTPUT: D0 - D3

Note (1): Off-State Leakage Current of each single output ≤25μA, Tj = -40 to 150°C.
L9947

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ELECTRICAL CHARACTERISTICS (continued)
OUTPUTS:
L9947

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FUNCTIONAL DESCRIPTION
The L9947 is a power interface circuit designed
for a multiplex system controlled by a parallel μC
bus. The bus consists of four bidirectional data
wires D0 - D3 and three control wires read/write
(R/WN), mode (MODE) and chip select (CSN).
The device needs two supply voltages. The first
voltage supplies the half bridges, high side driver
and its driving part. The second one is a 5V stabi-
lized supply. The function of the device in the typi-
cal operating modes is described in the following
tables.
APPLICATION CIRCUIT DIAGRAM

Fogure 1: Recommended Application Circuit.
L9947

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