UNISONIC TECHNOLOGIES CO., LTD
93334
LINEAR INTEGRATED CIRCUIT
HIGH ENERGY IGNITION CIRCUIT
DESCRIPTION
This devic...
UNISONIC TECHNOLOGIES CO., LTD
93334
LINEAR INTEGRATED CIRCUIT
HIGH ENERGY IGNITION CIRCUIT
DESCRIPTION
This device is designed to use the signal from a reluctor type ignition pickup to produce a well controlled output from a power darlington output
transistor.
FEATURES
* Very Low Peripheral Component Count * No Critical System Resistors * Wide Supply Voltage Operating Range (4.0V ~ 24V) * Overvoltage Shutdown (30V) * Dwell Automatically Adjusts to Produce Optimum Stored Energy without Waste * Externally Adjustable Peak Current * Transient Protected Inputs and Outputs
ORDERING INFORMATION
Ordering Number 93334G-S08-R Note: Pin Assignment: G: Gate D: Drain
S: Source
Package SOP-8
SOP-8
Packing Tape Reel
MARKING
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1 of 4
QW-R121-006.D
93334
PIN CONFIGURATION
LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM AND TYPICAL APPLICATION
Component Values
Pickup Coil RL
R1, R2
C1, C2
RBAT CFilter CDWELL RGAIN
RD2 RS
RDRIVE
RD1
Series resistance = 800Ω±10% @ 25℃, inductance= 1.35H @ 1.0kHz @ 15Vrms Leakage L=0.6mH, primary R=0.43Ω±5% @ 25℃, primary L=7.5mH ~ 8.5mH @ 5.0A
Load resistor for pickup=12KΩ±20% Input buffer resistors provide additional transient protection to the already clamped inputs=20k±20% For reduction of high frequency noise and spark transients induced in pick-up and leads; optional and non-critical Provides load dump protection (but small enough to allow operation at VBAT =4.0V) =300Ω±...