L497 STMicroelectronics, L497 Datasheet - Page 5

• Manufacturer Part Number: L497
• Description: HALL EFFECT PICKUP IGNITION CONTROLLER
• Manufacturer: STMicroelectronics

ELECTRICAL CHARACTERISTICS (continued)
N otes : 1.
APPLICATION INFORMATION
Figure 1 : Main Waveforms.
Symbol
V
I
6 leak
V
V
6SAT
Z7
12
2.
td/t desaturation ratio is given by:
I
sense
RPM Output Saturation Voltage
RPM Output Leakage Current
Auxiliary Zener Voltage
Reference Voltage
= I
coil
when the external Darlington is in the active region.
Parameter
td
T
1
I
11C
1
I
I
V
I
6
6
7
S
= 18.5 mA
= 25 mA
= 20 mA
I
11D
= 20 V
Test Conditions
Min.
1.20
19
Typ.
1.25
Max.
1.30
0.5
0.8
50
27
Unit
L497
V
V
V
V
A
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