CCA 4100 Flasher/Oscillator LED FLASHER IC-Layout FEATURES ?? LED-Flash-Light driver IC ?? very long operation time with only one 1.5V battery cell ?? minimum external devices (capacitor) ?? large operating range from 1 to 5V ?? average current drain under 500µA (over battery live cycle) ?? wide temperature range ?? low cost ?? fully function compatible to LM3909 GENERAL DESCRIPTION The CCA4100 is an insensitive and easy to use IC to flash Light Emitting Diodes (LEDs). For operating it only needs an external capacitor and a standard 1,5V battery cell. The circuite is self starting and includes internal timing resistors and a resistor to limit LED current. The device is optimised for minimal power drain at 1,5V and 3V at nominal flashing rates. Typical Applications are toys, advertising gimmicks or novelties but also applications with necessity to locate something in the dark as fishing floats, fire alarms and fire extinguishers or emergency switches and exits. The circuit could also be used for electronic applications as triggers and saw tooth generators. PIN CONFIGURATION (SOP 8) F-RC 1 8 S-RC OUT 2 7 NC NC 3 6 RL GND 4 5 Vcc CCA 4100 Dok.-Nr.: DD0013 LED-Flasher PIN 1 2 3 4 5 6 7 8 NAME F-RC Out NC GND VCC RL NC S-RC -1- DESCRIPTION Fast Frequency Voltage Output to charge capacitor no connected ground supply voltage current limited resistor out no connected Slow Frequency Ro/13.03.01 CCA 4100 Flasher/Oscillator ELECTRICAL CHARACTERISTICS o Conditions unless otherwise specified: Parameter Supply voltages Flash Frequency High Flash Frequency Current Peak LED current Pulse Width o -40 C < TOP < 85 C; Symbol VCC , VDD f fh I ILEDmax TPW Conditions C 300µF (5%) C 0,30 µF (5%) in operation mode C 350 µF C 350 µF at half amplitude Min. 1.1 0,65 Typ. 1,0 1,1 0,55 45 6,0 Max. 6.0 1,3 0,75 Application example 300µ / 3 V 1 8 2 7 CCA 4100 3 6 4 5 1,5 V Dok.-Nr.: DD0013 LED-Flasher Flash rate: ~ 1 Hz -2- Ro/13.03.01 Unit V Hz KHz mA mA ms CCA 4100 Flasher/Oscillator REVISION HISTORY Revision 1.0 Date 03/13/01 Author Roland Obst Item Data sheet CREATIVE CHIPS GmbH Am Ockenheimer Graben 54 D-55411 Bingen / Rhein Germany Phone: +49 (0) 6721 7999 10 Fax: +49 (0) 6721 7999 12 Email: info@creativechips.com Internet: http://www.creativechips.com Dok.-Nr.: DD0013 LED-Flasher -3- Ro/13.03.01