SY7806 (Dual 1.5A Current Source Camera Flash LED Driver)
【產品特性】· Dual 1.5A High Side Current Sources Programmability
· 2 A Total Allowed LED Current During Operation (ILED1 + ILED2 = 2A)
· Programmable LED Current Range from 1.4 mA to 1.5 A
· Low RDS(ON) of internal FET: 55mΩ for NFET
and 85mΩ for PFET.
· Up to 85% Efficiency with small inductor
· Hardware Flash Mode Enable (FLEN)
· Synchronization Input for RF Power Amplifier Pulse Events (TX)
· Hardware Torch Mode Enable (TORCH/TEMP)
· Optimized Flash LED Current During Low Battery Conditions (IVFM)
· Remote NTC Monitoring (TORCH/TEMP)
· 400kHz I2C Compatible Interface
· Package: CSP1.79×1.46-12, 0.4 mm Pitch
【產品應用】Camera Phone White LED Flash
【文字介紹】SY7806 is a high efficiency, high-current synchronous boost converter with 2-channel high side current sources. Each channel is capable of delivering 1.5A current for WLED and offers independent programmable currents to drive the LEDs in a flash or torch condition. The dual 128 level current sources provide the flexibility to adjust the current ratios between LED1 and LED2. SY7806 is controlled via an I2C compatible interface. The 2MHz or 4MHz switching frequency options, overvoltage protection (OVP), and adjustable current limit allow for the
use of tiny, low-profile inductor and 10μF ceramic capacitor. The dual high side current sources that mean LED cathode is grounded provide improved thermal management.
The SY7806 is available in the CSP1.79×1.46-12 package.