STCF04 datasheet(6/43 Pages) STMICROELECTRONICS

6 / 43 page

Description (continued)

STCF04

6/43

Doc ID 022927 Rev 3

Description (continued)

All the functions of the device are controlled through the I²C bus which reduces the number

of logic pins of the package and saves PCB tracks on the application board. Hard and soft-

triggering of flash and torch are both supported. The device includes many functions to

protect the chip and the power LEDs. These include a soft-start control, chip

overtemperature detection and protection, and shorted LED detection and protection. In

addition, a digital programmable timeout function protects the LEDs in case of a wrong

command issued by the microprocessor. An optional external NTC is supported to protect

the LEDs against overheating. It is possible to separately program the current intensity in

Flash and Torch mode through I²C. In order to guarantee the proper function of Flash mode,

the SuperCap voltage should be monitored by the microprocessor using the READY pin

feature. In case of insufficient power from the SuperCap, a warning is generated. The device

is packaged in BGA 3 x 3 mm with 1 mm height.

STCF04 数据表(PDF) 6 Page - STMicroelectronics