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L584 데이터시트 PDF




STMicroelectronics에서 제조한 전자 부품 L584은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

PDF 형식의 L584 자료 제공

부품번호 L584 기능
기능 MULTIFUNCTION INJECTION INTERFACE
제조업체 STMicroelectronics
로고 STMicroelectronics 로고


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L584 데이터시트, 핀배열, 회로
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




L584 pdf, 반도체, 판매, 대치품
L584
ELECTRICAL CHARACTERISTICS (Vs (Pin 14) = 14.4V; –40 Tj 105°C; Rref = 1.20Kunless
otherwise specified; refer to fig. 1)
Symbol
Parameter
Test Condiction
Min. Typ. Max.
VS Operating Supply Voltage
Pin 1 Open
4.75 44
Vd Dump Protection Threshold
Pin 1 = VS
Rd Dump Protection Input Resistance Pin 1 to GND
28 36
18 50
Iq Quiescent Current
Vi Input Threshold Voltages
Pin 14
Pin 10, 11
Low
High
45
0.8
2.0
Ii Input Current
Pin 10, 11
Low
High
–100
–250
Vr Reference Voltage
Pin 9
1.15 1.35
Rr Reference Resistor Range
Pin 9 to GND
Ir = Vr/Rr
1 3.3
I6 Peak Duration Control Current
Pin 6
Vpin 6 1.8V
Ir/9.50 | Ir/6.00
|
V6th Peak Duration Control
Comparator Threshold
Pin 6
1.20 1.6
V6SAT Pin 6 Saturation Voltage
Pin 6
(discharge state)
200
I7 Off Duration Control Current
Pin 7
Vpin 7 1.8V
(Ir min)/9.50 | (Ir max)/6.00
|
V7th Off Duration Control
Comparator Threshold
Pin 7
1.20 1.6
V7SAT Pin 7 Saturation Voltage
Pin 7
(discharge state)
200
Vspt Peak Current Threshold Voltage Pin 3
400 500
Vset Holding Current Set Voltage Range Pin 2
02
Vset Holding Current Set Voltage Range Pin 3, Peak Value, dV/dt 1V/s
Vset
0.01
Vset +
0.01
I3 Pin 3 Bias Current
Vpin 3 = 600mV
–200
Vcl Recirculation Zener Clamping Pin 16 to Pin 15 @ 200mA into Pin16 13.5
Voltage
18.5
Idn NPN Driver Source Current
Idp PNP Driver Sink Current
Vpin 15 = 0V
Vpin 8 4.75V
70 x Ir | 140 x Ir
25 x Ir | 60 x Ir
Unit
V
V
k
mA
V
V
µA
µA
V
k
A
V
mV
A
V
mV
mV
V
V
µA
V
A
A
4/13

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L584 전자부품, 판매, 대치품
L584
The drive current for the two darlingtons and the
waveform time constants are all defined in turn by a
resistor between pin 9 and ground.
The recommended value for Ir is 1mA which is ob-
tained with a 1.2Kresistor. The darlington drive
currents are given by :
PNP : Idp = 35 Ir typ. NPN : Idn = 100 Ir typ.
The duration of the high current level (t2 in fig 4) is
set by a capacitor connected between pin 6 and
ground. This capacitor, C1 is related to the duration,
t2, by :
t2 = C1
V6th – V6sat
I6
= 12
C1
Iref
(typ.)
The discharge time constant (toff in fig 4) is set by a
capacitor C2 between pin 7 and ground and is found
from :
V7th – V7sat
toff = C2
I7
Cr
= 12
(typ)
Iref
Figure 4 : Waveforms of the Typical Application Circuit of Fig. 2.
7/13

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-----------------------------------------------------------------------

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