AW3648CSR数据手册Awinic中文资料规格书

描述 Description

High Efficiency, 1.5A Flash LED DriverThe AW3648 is a LED flash driver that provides ahigh level of adjustability within a small solutionsize. The AW3648 utilizes a 2MHz or 4MHzfixed-frequency synchronous boost converter toprovide power to the 1.5A constant current LEDsources. The 64 levels current source provides theflexibility to adjust the current of LED inFlash/Torch/IR modes. The AW3648 providesthree IVFM protection modes to prevent systemreset or shutdown under low battery condition.The AW3648 is controlled via an I 2 C-compatibleinterface. The main features of the AW3648include: flash/torch current, flash timeout duration,IVFM, TX interrupt, and NTC thermistor monitor.The AW3648 also provides hardware flash andhardware torch pins (STROBE and TORCH/TEMP)to control Flash/Torch events.The 2MHz or 4MHz switching frequency options,overvoltage protection (OVP), and adjustablecurrent limit allow for the use of tiny, low-profileinductors and 10-µF ceramic capacitors. Thedevice operates over a –40°C to +85°C ambienttemperature range.

特性 Features

• 1.5A Accurate and Programmable LED Current Source
- Flash：23.4mA~1.5A，64 levels 23.44mA/leve
•
- Torch：5.4mA~376mA，64 levels 5.89mA/leve
•
- Flash Timeout：40ms~1.6s，16 levels
- Flash/Torch/IR Mode
• High Efficiency: 85%
• Optimized Flash LED Current During Low Battery Conditions (IVFM)
• Hardware Strobe Enable (STROBE)
• Hardware Torch Enable (TORCH/TEMP)
• Remote NTC Monitoring
• Synchronization Input for RF Power Amplifier Pulse Events (TX)
• 400kHz I2C：AW3648（I2C Address=0x63）
• 0.4mm Pitch, CSP-12 Package