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XCL205/XCL206/XCL207 Series

●VOUT setting example

■TYPICAL APPLICATION CIRCUIT

●XCL205/XCL206/XCL207 Series A/B/C/G Types

●XCL205/XCL206/XCL207 Series F Type

<XCL205/XCL206/XCL207 F type output voltage setting>

The output voltage can be set by adding external dividing resistors. The output voltage is determined by R1 and R2 in the equation below.

The sum of R1 and R2 is normally kept 1MΩor less. The output voltage range can be set from 0.9V to 6.0V based on the 0.8V ±2.0%

reference voltage source.

Note that when the input voltage (VIN) is less than or equal to the set output voltage, an output voltage (VOUT) higher than the input

voltage (VIN) cannot be output.

VOUT=0.8× (R1+R2)/R2

Adjust the value of the phase compensation speedup capacitor CFB so that fzfb=1/ (

2×π×CFB×R1) is 10 kHz or less. It is

optimum to adjust to a value from 1kHz to 20kHbased on the components used and the board layout.

[Calculation example]

When R1=470kΩ, R2=150kΩ,

VOUT=0.8× (470k+150k)/150k=3.3V

●External Components

CIN : 10V/4.7μF (Ceramic)

CL : 6.3V/10μF (Ceramic)

NOTE

The Inductor can be used only for this DC/DC converter.

Please do not use this inductor for the other reasons.

Please use B, X5R, and X7R grades in temperature characteristics

for CIN and CL capacitors.

These grade ceramic capacitors minimize capacitance-loss as a

function of voltage stress.

VOUT(V)

R1(kΩ)

R2

(kΩ)

CFB(pF)

0.9

100

820

150

1.2

150

300

100

1.5

130

150

220

1.8

300

240

150

2.5

510

240

100

3.0

330

120

150

3.3

470

150

100

4.0

120

30

470

V

C

VSS

VSS

CE/MODE

VOUT

LX

VIN

L1

L2

CIN

CL

VIN

VOUT

CIN

7

8

1

2

3

4

5

6

Vss

VIN

Lx

Vss

CE/MODE

FB

L1

L2

R1

R2

CFB

CL

VOUT

● External Components

CIN

: 10V/4.7μF(Ceramic)

CL

: 6.3V/10μF(Ceramic)

R1 : 300kΩ

R2 : 240kΩ

CFB : 150pF

NOTE

The Inductor can be used only for this DC/DC converter.

Please do not use this inductor for the other reasons.

Please use B, X5R, and X7R grad

es in temperature characteristics for CIN and CL capacitors.

These grade ceramic capacitors minimize capacitance-loss

as a function of voltage stress.