FAN5645 Datasheet | Fairchild Semiconductor

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: - 20m A maximum output - 40m V typical dropout at 20m A - 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 puters ® Description The FAN5645 is a flexible and pact 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 40m V 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 2.7 to 5.5V VBAT C IN 0.1µF VIN GND CTRL LED+ ISET GND R SET Control Figure 1. Typical Application for the FAN5645 Ordering Information Part Number FAN5645MPX Package MLP-6 3.0 x 3.0mm Pb-Free Operating Temperature Range Packing Method -40°C to 85°C Tape and Reel Bluetooth® is a registered trademark of Motorola, Inc. © 2006 Fairchild Semiconductor Corporation FAN5645 - Rev. 1.0.0 .fairchildsemi. - Indicator LED Blinker with Single-Wire Interface Block Diagram Under-Voltage UVLO Lockout Thermal Shutdown...