L9904(2002) Ver la hoja de datos (PDF) - STMicroelectronics
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L9904 Datasheet PDF : 17 Pages
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L9904
MOTOR BRIDGE CONTROLLER
PRODUCT PREVIEW
s OPERATING SUPPLY VOLTAGE 8V TO 28V,
OVERVOLTAGE MAX. 40V
s OPERATING SUPPLY VOLTAGE 6V WITH
IMPLEMENTED STEPUP CONVERTER
s QUIESCENT CURRENT IN STANDBY MODE
LESS THAN 50µA
s ISO 9141 COMPATIBLE INTERFACE
s CHARGE PUMP FOR DRIVING A POWER
MOS AS REVERSE BATTERY PROTECTION
s PWM OPERATION FREQUENCY UP TO
30KHZ
s PROGRAMMABLE CROSS CONDUCTION
PROTECTION TIME
s OVERVOLTAGE, UNDERVOLTAGE, SHORT
CIRCUIT AND THERMAL PROTECTION
s REAL TIME DIAGNOSTIC
SO20
ORDERING NUMBER: L9904
DESCRIPTION
Control circuit for power MOS bridge driver in auto-
motive applications with ISO 9141bus interface.
BLOCK DIAGRAM
VS 10
ST 1
-
+
= VSTH
Ref erence
BIAS
fST
VC C
Charge
pump
VC C
Overvoltage
RDG
DG 2
Undervoltage
Thermal shutdown
EN 4
REN
V S1TH =
DIR 5
RDI R
VCC
R PWM
PWM 3
PR 6
Timer
V S2TH =
RCP
11 CP
13 CB1
12 GH1
14 S1
R S1
19 GL1
R GL1
18 GL2
R GL2
17 S2
R S2
15 GH2
16 CB2
RX 7
RRX
VCC
RTX
TX 8
ISO-Interface
= 0.5 • VVS
IKH
9K
20 GND
October 2002
This is preliminary information on a new product now in development. Details are subject to change without notice.
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