Data brief

For further information contact your local STMicroelectronics sales office.

February 2012

Doc ID 022750 Rev 1

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STEVAL-TLL008V1

Camera flash with SuperCap based on the STCF04

Features

– Shutdown mode, mainly used to decrease

the power consumption of the device

– Monitoring mode, used to monitor the

SuperCap voltage

– IDLE mode, which allows the accessing of

all the internal registers

– NTC feature, which can be used in all

modes. The NTC is activated automatically

in flash and Torch mode regardless of the

value of the NTC_ON bit. NTC must be

activated manually in all the other modes

– Torch mode, intended to be used for low

light intensities. The LED current in Torch

mode can be adjusted in a range from

15 mA up to 300 mA

– Flash mode, intended to be used for high

light intensities. The LED current in Flash

mode can be adjusted up to 10 A with the

input voltage ranging from 2.7 V up to 5.5 V

Description

The STEVAL-TLL008V1 demonstration board is a

flash LED driver using the STCF04 device, which

dedicated to charging a SuperCap.

All LEDs with a forward voltage range from 2.5 V

to 5 V are compatible with the STCF04. The

forward voltage spread of any selected LED must,

however, be within this range (2.5 V to 5 V). It is

possible to set the level of the LED current in

Flash mode and Torch mode by setting the

dimming registers. The maximum level of the LED

current in Flash mode can be set by changing the

external flash resistor.

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Obsolete

Product(s)

- Obsolete

Product(s)