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AS3685C Datasheet(PDF) 2 Page - ams AG |
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AS3685C Datasheet(HTML) 2 Page - ams AG |
2 / 22 page AS3685C austriamicrosystems Datasheet www.austriamicrosystems.com/AS3685 (ptr) 1.1 1 - 21 1 General Description The AS3685 is low noise high efficiency capacitive charge pump with 1:1, 1:1.5 and 1:2 operating modes in a small 3x3mm DFN10 or a tiny 2x1.5mm WL-CSP (Wafer Level Chip Scale Package) package. It can drive one flash led at up to 1000mA current. It supports flash/torch and indicator mode for the flash led. Additionally the AS3685 limits the flash time automatically to protect the flash LED. 2 Key Features High Efficiency capactive charge pump with 1:1, 1:1.5 and 1:2 modes − 1:2 Mode can be disabled by interface Up to 1000mA Led Current Automatic Charge Pump Mode switching (Up) LED cathode disconnect in Shutdown Overtemperature Protection Automatic Flash Timeout to protect the LED − Adjustable between off, 100ms…1500ms Two Wire Interface − Accurate Control of Currents and Modes Package − DFN10 3x3mm (10 pins + exposed pad) − WL-CSP (Wafer Level Chip Scale Package) 3x4 balls 0.5mm pitch (2x1.5mm) 3 Applications Flash / Torch for Mobile Phones, Digital Cameras and PDA 4 Application Diagram Figure 1 – Application Diagram of AS3685C AS3685C Ultra Small High Efficiency 1000mA Charge Pump for White LED Flash with Two Wire Serial Interface Datasheet |
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