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CCA4100 – Flasher/Oscillator LED FLASHER CCA4100 FEATURES LED flashlight driver IC Long operation time with one 1.5V battery cell Low number of external components (one capacitor) Large operating range from 1 to 5V Average current drain less than 500µA (over battery life cycle) Wide temperature range Low cost Fully function compatible to LM3909 Application Circuit 300µ / 3 V 1 Pin Configuration (SOP 8) F-RC 1 8 S-RC OUT 2 7 NC NC 3 6 RL GND 4 5 Vcc Chip Layout 8 2 7 CCA 4100 3 6 4 5 1,5 V Flash rate: ~ 1 Hz CCA 4100 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. ELECTRICAL CHARACTERISTICS Conditions: Parameter -40 oC < TOP < 85 oC; Symbol Conditions Supply voltages VCC, VDD Flash Frequency f High Flash Frequency fh Current I Peak LED current ILEDmax Pulse Width TPW C = 300 µF (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. Unit 6.0 1.3 V Hz kHz mA mA ms 0.75 PIN NAME DESCRIPTION 1 2 3 4 5 6 7 8 F-RC Out NC GND VCC RL NC S-RC Fast Frequency Voltage Output to charge capacitor no connected ground supply voltage current limited resistor out no connected Slow Frequency Disclaimers: Creative Chips GmbH reserves the right to make changes without further notice to any products herein to improve reliability, function or design. Creative Chips does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others. These products are not authorized for use as critical components in life support devices or systems without the express written approval of Creative Chips. 39/2013 CREATIVE CHIPS GmbH, Im Bubenstück 1, 55411 Bingen am Rhein, GERMANY Web: www.creativechips.com || Email: [email protected] || Tel.: +49 (0) 67 21 / 9 87 22 - 0