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參數(shù)資料
| 型號： | L484D1 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | MAGNETIC PICKUP IGNITION CONTROLLER |
| 中文描述： | 磁皮卡點火控制器 |
| 文件頁數(shù)： | 4/11頁 |
| 文件大小： | 156K |
| 代理商： | L484D1 |
PINFUNCTIONS
(continued)
N
°
14
Name
Function
DRIVER COLLECTOR
INPUT
The collector current for the internal driver which drives the external
darlington is supplied through this pin. The external resistor R10 limits the
dissipation in the IC. The value this resistor depends on the darlington used
and on the limiting current in the coil.
The external darlington is protected against overvoltage by means of an
internal zener available at this pin. The external divider R5/R6 defines the
limitation value, typically given by :
15
OVERVOLTAGE
LIMITATION
V
ovp
=
30
R5
+
5
10
3
R6
+
30
16
DRIVING STAGE
OUTPUT
Current Driver for the External Darlington. To ensure stability on the current
limitation loop a capacitor C3 (typically 2.2nF, this value depending on the
darlington used) must be connected between this pin and the current
sensing input (pin 1).
ELECTRICAL CHARACTERISTICS
(V
S
= 14.4V ; T
J
= - 40 to 125
°
C unlessotherwisespecified ; referred
to the test circuit)
Symbol
V
S
V
IS
Parameter
Test Conditions
Min.
6
160
Typ.
Max.
28
240
Unit
V
mV
Operating Supply Voltage
Input Stage Voltage (pin 2 with
10K
resistor)
On Pick-up Thresh. Voltage at LOW RPM
(pin 2)
Current Limitation Sensing Voltage (pin 1)
Zero Crossing Thresh. Voltage (pin 8)
Hysteresis Voltage (pin 8)
C
D WELL
Charge Current
200
V
TH
V
IS
–30
V
IS
+30
mV
V
SENS
V
ZC
V
H
I
7C
V
S
= 6 to 16V
200
3
100
0.7
320
60
200
3
mV
mV
mV
μ
A
20
I
7D
I
7D
/I
7C
I
7C
C
D WELL
Discharge Current
at LOW RPM
V
pick-up
= 0.5V ;
or pin 6 not connected
(*) Note 1
at HIGH RPM
7
7
8
30
15
33
μ
A
I
7D
I
7D
/I
7C
V
pin3
I
3
V
Cp
C
D WELL
Charge Current
C
D WELL
Discharge Current
V
pick-up
= 9V
(**) Note 2
T
amb
= 25
°
C
(***) Note 3
13
0.7
0.85
44
3.2
4
3
0.7
μ
A
μ
A
Threshold Voltage
Output Current
Continuous Coil Current Protection Inhibit
LOW Voltage (pin 4).
Series Darlington Driver
Saturation Voltage (V
pin 14 - 16
)
Zener Volt. Pin 11
External Darlington Overvoltage Protection
Zener Voltage
Pin 9 Output Current in Low Status
Tachometer Signal Output LOW Voltage.
(pin5)
Output Leakage (pin 5)
V
μ
A
V
0
V
CEsat
I
pin14
= 150mA
I
pin14
= 50mA
I
pin11
= 140mA
T
amb
= 25
°
C ;
I
pin15
= 5 to 15mA
V
9
= 0V
ON Condition
I
sink
= 0.5mA
OFF Condition
V
pin5
= 5V
0.4
1
0.6
8.8
35
V
V
V
V
V
Z
V
OVZ
6.5
25
I
09
V
CH
3
mA
V
I
CH
0.7
10
μ
A
L484
4/11
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