EUP3618 Charge Pump Flash LED Driver with Safety Timer DESCRIPTION FEATURES The EUP3618 is a large-current charge pump designed specifically for white LEDs used in camera flash applications. Only one small bucket capacitor is required to develop the output drive, providing a low EMI solution compared with inductive boost regulator. The EUP3618 has two operation modes: Flash mode and Movie mode. In Flash mode, the EUP3618 is capable of delivering up to 700mA. A safety timer is also included to ensure the LED can not be on indefinitely and overheat. The EUP3618 is available in a 10-pin TDFN package. Input Voltage Range — 2.7V to 5.5V Flash and Movie — Two Selectable Modes Up to 700mA Output Current — Flash Mode Flash Mode Safety Timer Shut-Off 1X and 2X Automatic Mode for High Efficiency External Flash Control Pin for Synchronization to a Camera Module or Graphics Controller Short-Circuit, Over-Voltage, Over-Current and Over-Temperature Protection Soft-Start Functionality 3mm × 3mm TDFN-10 Package RoHS Compliant and 100% Lead (Pb)-Free Halogen-Free APPLICATIONS Typical Application Circuit Figure 1. DS3618 Ver1.0 Nov. 2012 1 Mobile Camera Phones Digital Cameras PDAs with Built-In Cameras