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STMicroelectronics Electronic Components Datasheet

L584 Datasheet

MULTIFUNCTION INJECTION INTERFACE

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L584 pdf
L584
MULTIFUNCTION INJECTION INTERFACE
. DRIVES ONE OR TWO EXTERNAL DAR-
LINGTONS
. DUAL AND SINGLE LEVEL CURRENT CON-
TROL
. SWITCHMODE CURRENT REGULATION
. ADJUSTABLE HIGH LEVEL CURRENT DURA-
TION
. WIDE SUPPLY RANGE (4.75 - 46V)
. TTL-COMPATIBLE LOGIC INPUTS
. THERMAL PROTECTION
. DUMP PROTECTION
PRELIMINARY DATA
DIP16 (12 + 2 + 2)
DESCRIPTION
The L584 is designed to drive injector solenoids in
electronic fuel injection systems and generally in-
ductive loads for automotive applications. The de-
vice is controlled by two logic inputs and features
switchmode regulation of the load current driving an
external darlington and an auxiliary one for the cur-
rent recirculation. A key feature of the L584 is flexi-
bility. It can be used with a variety of darlingtons to
match the requirements of the load and it allows
both simple and two level current control. Moreover,
BLOCK DIAGRAM
ORDERING NUMBER : L584
the drive waveshape can be adjusted by external
components. Other features of the device include
dump protection, thermal shutdown, a supply vol-
tage rangeof 4.75 - 46V and TTL-compatible inputs.
The L584 is suppliedin a 16 lead Powerdip package
which uses the four center pins to conduct heat to
the PC board copper.
November 1988
1/13


STMicroelectronics Electronic Components Datasheet

L584 Datasheet

MULTIFUNCTION INJECTION INTERFACE

No Preview Available !

L584 pdf
L584
PIN CONNECTION
ABSOLUTE MAXIMUM RATINGS
Symbol
VS
V1
Vr
Vsens
V8
Ir
Tstg, Tj
Parameter
DC Supply Voltage (pin 1 open)
Positive Transient Voltage
(pin 1 connected to VS, πf fall time constant = 100ms)
(5ms trise 10ms, Rsource 0.5)
Input Voltage (pins 10, 11)
External Reference Voltage (pin 2)
Sense Voltage (pin 3)
Max D.C. and Transient Voltage
Reference Current (pin 9)
Storage and Junction Temperature Range
THERMAL DATA
Symbol
Rth j-pins
Rth j-amb
Parameter
Thermal Resistance Junction-pins
Thermal Resistance Junction-ambient
* Obtained with the GND pins soldered to printed circuit with minimized copper area.
Max.
Max.
Value
– 0.2V min; +50V Max
+60V Max
– 0.2V min; +7V Max
– 0.2V min; +7V Max
– 0.2V min; +7V Max
50V
5mA Max
–55 to 150°C
Value
15
80
Unit
°C/W
°C/W
2/13


Part Number L584
Description MULTIFUNCTION INJECTION INTERFACE
Maker STMicroelectronics
Total Page 13 Pages
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