SY7726 (High Efficiency 2-string LED Drive)
【產品特性】• Wide input range: 2.7V~28V
• Drive up to 10 LEDs per string
• Integrated 40V Power MOSFET
• 2 channel current source of up to 30mA
• 1% Typical current matching accuracy
• Low LED Regulated Voltage (150mV typical)
• High switching frequency - 1MHz
• Internal compensation and soft start
• Analog PWM dimming
• Enable and 1-wire digital dimming
• LED open/short protection, OVP, OCP protection
• Thermal Shutdown Protection
• Pb-free Package: CSP 1.31×1.31mm -9, 0.4 mm Pitch
【產品應用】· Smart Phone
· 1-cell lithium-ion battery LED applications
【文字介紹】SY7726 is the ideal power solution for white LED backlight with medium to small size LCD panels. It is a highly integrated Boost converter with two matching current sources. It integrates a 40V Power MOSFET as well as compensation and soft start circuit, which results with much fewer external components.
Each of the two regulated current source provides 30mA (max.) programmed current. With a maximum 38V at the output of the Boost converter, each string can connect up to 10 LEDs in series, for a total of 20LEDs, respectively.
The device has a wide input voltage range from 2.7V to 28V. The LED current is programmable through a resistor. It integrates both PWM Analog dimming and 1-wire digital dimming function for accurate LED current control.