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XC9119D10A

Series

(V)

(k

Ω)

(k

Ω)

(pF)

3.3

300

130

1000

5.0

300

75

1000

7.0

180

30

1800

10.0

270

30

1200

15.0

510

36

510

18.0

510

30

510

■

OPERATIONAL EXPLANATION (Continued)

<Lx (Pin No. 1): Switch Pin>

Please connect the anode of an Schottky barrier diode and inductor to the Lx pin.

<FB (Pin No. 3): Voltage Feedback Pin>

The reference voltage is 1.0V (TYP.).

Output voltage is approximated by the following equation according to the value

Ω or less.

about 500Hz. According to the usage, adjusting the inductance value, the load capacity value, and so on to the most

suitable operation.

Typical example:

●

Application Information

■

NOTES ON USE

1. Please do not exceed the value of stated absolute maximum ratings.

2. The DC/DC converter performance is greatly influenced by not only the ICs’ characteristics, but also by those of the

external components. Care must be taken when selecting the external components.

3. Make sure that the PCB GND traces are as thick as possible, as variations in ground potential caused by high ground

currents at the time of switching may result in instability of the IC.

4. Please mount each external component as close to the IC as possible and use thick, short connecting traces to reduce

the circuit impedance.

5. Please set up the output voltage value so that the Lx pin voltage does not exceed 20V.

Lx

CE/SS

FB

L

10uF

SD

4.7uF

2.5V~6V

operations with the input voltage less than 2.5V when voltage from 2.5V to 6.0V is applied to the power source. Please