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UL497 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - HALL EFFECT PICKUP IGNITION CONTROLLER - Unisonic Technologies

भाग संख्या UL497
समारोह HALL EFFECT PICKUP IGNITION CONTROLLER
मैन्युफैक्चरर्स Unisonic Technologies 
लोगो Unisonic Technologies लोगो 
पूर्व दर्शन
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UL497 pdf
UL497
„ PIN CONFIGURATION
Preliminary
LINEAR INTEGRATED CIRCUIT
„ PIN DESCRIPTION (refer to APPLICATION CIRCUIT)
PIN NO.
1
2
3
4
5
6
7
8
9
10
PIN NAME
GND
SIGNAL GND
POWER SUPPLY
N.C.
HALL-EFFECT INPUT
RPM OUTPUT
AUX. ZENER
RECOVERY TIME
MAX CONDUCTION
TIME
DWELL CONTROL
TIMER
DESCRIPTION
This pin must be connected to ground.
This pin must be connected to ground.
The input of supply voltage. Its voltage will be limited by an 7.5V zener. The
R5 inside will limit the current by the zener for high supply voltege.
Connected to ground or left open.
The input of the hall-effect pickup signal. This input is dwell control circuit
output to enable the current driving into the coil.
As a open collector output, it’s at low level when current flows in the ignition
coil. It should be connected pin7 zener for high volteges protection. Then R8
must limit the zener current, too, and R 1 limits pin 6 current if RPM module
pad is accidentally connected to VS.
A 21V Zener whose current must be limited by an internal resistor.
A capacitor connected between this pin and ground sets the slope of the
dwell time variation as it rises from zero to the correct value. It occurs just
following the detection of I coll94% I nom, only before the low transition of the
hall-effect signal pulse. The duration is given :
tsrc=12.9×R7src× Csrc (ms)
PS: R7 (K) is the biasing resistor at pin 12 and Csrc (μF) is the delay
capacitor at pin 8.
Between this pin and ground there’s a capacitor which determines the
intervention delay of the permanent conduction protection. The coil current is
slowly reduced to zero after the delay time.
Delay Time TP is given by :
tP=16×R7 CP (ms)
PS: R7 (K) is the biasing resistor at pin 12 and CP (μF) is the delay capacitor
at pin 9.
Connected between this pin and ground there’s a capacitor CT which is
charged when the Hall effect output is High and is discharged at the High to
Low transition of the Hall effect signal. When using a 62Kresistor at pin12
CT should be 100nF.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 8
QW-R118-015.a

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भाग संख्याविवरणविनिर्माण
UL497HALL EFFECT PICKUP IGNITION CONTROLLERUnisonic Technologies
Unisonic Technologies


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