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AS3685A Datasheet(PDF) 2 Page - ams AG |
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AS3685A Datasheet(HTML) 2 Page - ams AG |
2 / 25 page AS3685A/AS3685B austriamicrosystems Datasheet www.austriamicrosystems.com/ AS3685 (ptr) Revision 2.2 1 - 24 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 (different device versions available) Up to 1000mA Led Current Automatic Charge Pump Mode switching (Up) LED cathode disconnect in Shutdown Overtemperature Protection Automatic 800ms Flash Timeout to protect the flash LED Two Device Variants: − AS3685A: Direct control to select three currents − AS3685B: Single Pin Interface or Two Pin Interface with Strobe Input; 17 different currents can be selected 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 AS3685A/AS3685B C1+ C1- C2+ C2- CFLY1 1.0 FCFLY2 1.0 F VCP ILED AS3685A AS3685B ISET VBAT EN1 EN2 CBAT 2.2 F CVCP 2.2 F VBAT VSS DLED RISET RTXMASK AS3685A/AS3685B Ultra Small High Efficiency 1000mA Charge Pump for White LED Flash Datasheet |
Similar Part No. - AS3685A_11 |
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Similar Description - AS3685A_11 |
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