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| Ignition Controller FEATURES Three Ignition Advance Angles (Start, Idle, and Run Zones) Works in Magneto-based and CDI Systems RC Oscillator Schmitt Trigger Inputs for Noise Immunity Ignition Output Driver for SCR RPM Limiter Operating Voltage: 2.7V - 5.5V Operating Temperature: -40C to 125C Package: 8-pin SOIC KX1130 GENERAL DESCRIPTION The KX1130 is an electronic ignition controller for small gasoline engines. The KX1130 provides variable ignition timing by selecting one of three ignition advance angles based on engine speed. Variable timing provides better cold start performance as well as higher efficiency when running at high engine speeds. Using an RC oscillator time base, the KX1130 measures the time between pulses from the magneto to determine the speed of the engine. Based on the engine speed, the KX1130 calculates the appropriate delay to position the ignition pulse at the desired advance angle. FUNCTIONAL BLOCK DIAGRAM VDD GND PUL RPM TImer POR RSTB MOD Oscillator OSC Control TST Delay Generator Driver IGN www..com (c) Keterex, Inc., 2009. All rights reserved. KX1130BR-A3 KX1130 Ignition Controller EXAMPLE APPLICATION CIRCUIT MAGNETO Kill Switch IGNITION COIL Pulser VDD RSTB OSC GND PUL MOD TST IGN Advanced Reference Position SPARK PLUG SCR Pulser Ot t Contact Information Keterex, Inc. 7320 N. Mo Pac Expressway Suite 201 Austin, Texas 78731 Tel: 512-346-8800 www.keterex.com www..com Email: sales@keterex.com Information furnished by Keterex, Inc. in this document is believed to be accurate and reliable. However, no responsibility is assumed for its use. Information in this document is subject to change without notice. Trademarks: The Keterex name and logo are registered trademarks of Keterex Incorporated. Other products or brand names mentioned herein are trademarks or registered trademarks of their respective holders. 2 KX1130 |
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