The SC613 is a versatile charge pump designed for use in battery operated power supply applications. The wide input range is matched for Li-Ion battery applications. Only two 1uF ceramic bucket capacitors are required, and the inductorless implementation provides a reduced-EMI solution. Low noise mode switching circuitry and constant output current allow the use of 1uF input and output capacitors. The SC613 charge pump regulator can be used for applications that require up to 140mA of output current with a 4.5V output. The 5.0V output version provides up to 100mA of output current. The small package size, low component count and lower overall system cost coupled with its low noise make the SC613 a superior solution compared to switch mode regulator designs.
The SC613 is a versatile charge pump designed for use in battery operated power supply applications. The wide input range is matched for Li-Ion battery applications. Only two 1uF ceramic bucket capacitors are required, and the inductorless implementation provides a reduced-EMI solution. Low noise mode switching circuitry and constant output current allow the use of 1uF input and output capacitors. The SC613 charge pump regulator can be used for applications that require up to 140mA of output current with a 4.5V output. The 5.0V output version provides up to 100mA of output current. The small package size, low component count and lower overall system cost coupled with its low noise make the SC613 a superior solution compared to switch mode regulator designs.
The SC614 is a high efficiency charge pump LED driver using Semtech’s proprietary mAhXLifeTM technology. Performance is optimized for use in Li-ion battery applications. Each of 7 LED currents can be programmed via the I2C serial control bus. M1 through M4 are for LED backlighting of LCD main displays. S1/FL3 through S3/FL1 can be used for backlighting sub displays.
The SC614 is a low noise backlight and flash driver with a serial interface. It features four independent current sinks for main backlight, adjustable from 0.4mA to 32mA each. It also has three independent current sinks for sub-backlight or flash, adjustable from 0.4mA to 102mA each. The driver supports PWM dimming and flash control, and offers high efficiency and battery life. It is equipped with various protection features and operating modes.
The SC617 is a high-current charge pump specifically designed for use with white LEDs used in camera flash applications. Only two small bucket capacitors are required to develop the output drive, providing a low EMI solution compared to inductive boost regulators. The SC617 has two modes of operation: flash mode and spotlight mode. In flash mode, the SC617 is capable of delivering 500mA of regulated current for a duration of 500ms or up to 700mA for a reduced duration. A safety timer is also included to ensure the LED cannot be left on indefi nitely and overheat. In spotlight mode the SC617 outputs 30% of the flash current.
