Monolithic Power Systems (MPS) MP3331 Synchronous Boost Flash LED Drivers
Monolithic Power Systems (MPS) MP3331 Synchronous Boost Flash LED Drivers with an I2C interface are designed for high-resolution camera phones. These highly efficient, 2A, single-flash LED drivers improve image and video quality in low-light environments. The MP3331 series operates in a 1MHz/2MHz/3MHz/4MHz synchronous DC-DC boost converter to deliver an optimized solution for smaller PCB spaces with higher efficiency. Features include rich protection modes, high power density and performances, and flash / assist light / torch / indicator / 5V DC modes. The cathode of the flash LED is referenced to GND, which improves thermal performance. MPS MP3331 Synchronous Boost Flash LED Drivers are available in a 1.7mm x 1.7mm WLCSP9 package. The MP3331 series is ideally suited for use in phone camera LED flash applications, tablets, and digital still cameras.
Features
- 2.7V to 5.5V input voltage
- 1MHz/2MHz/3MHz/4MHz selectable switching frequency
- Switching frequency foldback function
- 400kHz I2C compatible interface
- Standby/Flash/Assist/Torch/Indicator/5V DC modes
- Flash Mode
- Up to 2A programmable current with +/-7% accuracy
- Assist/Torch Mode
- Up to 508mA programmable current with +/-7% accuracy
- Indicator Mode
- Works in 31.5kHz PWM dimming mode with 2/16, 3/16, 4/16, 5/16 duty cycle
- 5V DC Mode
- Fixed 5V output voltage
- External torch/strobe pin
- Low-battery voltage protection
- Pre-flash for auto-detect load condition
- LED short/open protection
- VOUT-GND short protection
- Overtemperature and overvoltage protection
- Input undervoltage lockout protection
- Input-to-output disconnection function
- Thermal protection
- 1.7mm x 1.7mm WLCSP9 package
Applications
- Phone camera LED flash
- Tablets
- Digital still cameras
Typical Application
Publicado: 2015-08-31
| Actualizado: 2022-03-11