STCF02

Application

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1

Application

Table 1.

External components

Note:

- The external components proposal should be considered as a design reference guide. The

performances mentioned in the electrical characteristics table are not guaranteed for all the

possible electrical parameters of the components included in this list. On the other hand the

operation of STCF02 is not limited with the use of the external components listed above.

set to 2 KHz) has to be decreased because of an unstable driver function. Unstable operation

could be caused by using different values of inductor and output capacitor then recommended.

Figure 1.

Application circuit

Symbol

Parameter

Min.

Typ.

Max.

Unit

Sensing flash current resistor - thick film type (0805)

0.27

Ω

Sensing torch current resistor - thick film type (0603)

6.2

Ω

Setting resistor for middle flash mode - thick film type (0402)

8200

Ω

Two Input filtering capacitor TDK C1608X5R0J106MT - Ceramic

type (0603) 6.3V

10

2x10

µF

Output capacitance - Ceramic type 0603 6.3V

4.7

µF

L

TDKVLF5014A-4R7

INDUCTANCE

4.7

µH

DCR

0.12

Ω

NTC

Negative thermistor - NCP18WF104J03RB - Thick film type

100

k

Ω

Compensation capacitor - 0402

100

820

pF

Reference resistor - 0402

15

k

Ω

C1

Ceramic Capacitor

47

pF