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PDF L9947S Data sheet ( Hoja de datos )
| Número de pieza | L9947S | |
| Descripción | QUAD HALF-BRIDGE AND SINGLE HIGH-SIDE DRIVER | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de L9947S (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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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
1/13
1 page  
APPLICATION CIRCUIT DIAGRAM
Fogure 1: Recommended Application Circuit.
L9947
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.
5/13
5 Page 
Figure 5: Supply Current Path at VCC Interruption
L9947
11/13
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet L9947S.PDF ] | |
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| Número de pieza | Descripción | Fabricantes |
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