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FAN5645 Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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FAN5645 Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 10 page September 2007 © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN5645 • Rev. 1.0.0 FAN5645 Indicator LED Blinker with Single-Wire Interface Features Records and plays back blink patterns Single-wire digital control of LED blink rate and intensity Resistor-programmable LED maximum current High-side constant-current driver topology: - 20mA maximum output - 40mV typical dropout at 20mA 33µA operating current Standard 1.8V logic Short-circuit protection Thermal Shutdown Protection Under-Voltage Lockout Protection 6-pin 3.0 x 3.0mm MLP package Applications Cell Phones, Smart-Phones Pocket PCs, Bluetooth ® Headsets PDA, DSC, PMP, and MP3 Players Laptop Computers Description The FAN5645 is a flexible and compact solution for a blinking LED indicator. The internal programmable blink algorithm eliminates any need for continual system processor control. This means longer battery life for the hand-held system because the system processor is not awakened from sleep mode just to blink an LED. Very low dropout of 40mV allows driving an LED without any inductors or switch capacitors. An external resistor sets the LED output current level. LED blink rate and intensity is controlled by a simple one-wire interface. In shutdown mode, the supply current is reduced to 0.3µA (typical). The FAN5645 is available in 6-pin molded leadless package (MLP). Typical Application VIN 2.7to5.5V CTRL LED+ GND ISET VBAT Control GND CIN 0.1µF Figure 1. Typical Application for the FAN5645 Ordering Information Part Number Package Pb-Free Operating Temperature Range Packing Method FAN5645MPX MLP-6 3.0 x 3.0mm -40°C to 85°C Tape and Reel Bluetooth® is a registered trademark of Motorola, Inc. |
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