XC9504B092DAL datasheet(14/53 Pages) TOREX

14 / 53 page

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XC9504 Series

Circuit 1, Circuit 2

L1, L2: 22

μH (CDRH5D28, SUMIDA) : XC9504B092A

μH (CDRH5D28, SUMIDA) : XC9504B093A

μH (CDRH5D28, SUMIDA) : XC9504B095A

SD1, SD2 : CRS02 (Schottky, TOSHIBA)

EC10QS06 (Schottky, NIHON INTER)

CL1, CL2 : 16MCE476MD2 (Tantalum, NIHON CHEMICON)

35MCE335MB x 3 (Tantalum, NIHON CHEMICON)

CIN : 16MCE476MD2

NPN Tr 1 : 2SD1628 (SANYO)

PNP Tr 2 : 2SA1213 (TOSHIBA)

RFB : Please use by the conditions as below.

RFB11 + RFB12≦1M

RFB21 + RFB22≦1M

RFB11 / RFB12 = (Setting Output Voltage / 0.9) - 1

VOUT2 = (0.9 - VOUT1) / (RFB21 / RFB22) + 0.9

CFB : fzfb = 1 /(2

×π×CFB1×RFB11) = 1kHz to 50kHz (12kHz usual)

fzfb = 1 /(2

×π×CFB2×RFB21) = 1kHz to 50kHz (12kHz usual).

Circuit 4

L1 : 22

μH (CDRH5D28 SUMIDA)

SD 1 : MA2Q737 (Schottky, MATSUSHITA)

CL 1 : 16MCE476MD2 (Tantalum, NIHONCHEMICON)

CIN : 16MCE476MD2 (Tantalum, NIHONCHEMICON)

N-ch MOSFET : XP161A1355P (TOREX)

Circuit 5

L1 : 22

μH (CDRH5D28, SUMIDA) : XC9504B092A

μH (CDRH5D28, SUMIDA) : XC9504B093A

μH (CDRH5D28, SUMIDA) : XC9504B095A

SD 1 : MA2Q737 (Schottky, MATSUSHITA)

CL 1 : 16MCE476MD2 (Tantalum, NIHONCHEMICON)

CIN : 16MCE476MD2 (Tantalum, NIHONCHEMICON)

N-ch MOSFET : XP161A1355P (TOREX)

Circuit 7

L2 : 22

μH (CDRH5D28, SUMIDA) : XC9504B092A

μH (CDRH5D28, SUMIDA) : XC9504B093A

μH (CDRH5D28, SUMIDA) : XC9504B095A

SD 2 : MA2Q737 (Schottky, MATSUSHITA)

CL 2 : 16MCE476MD2 (Tantalum, NIHONCHEMICON)

CIN : 16MCE476MD2 (Tantalum, NIHONCHEMICON)

P-ch MOSFET : XP162A12A6P (TOREX)

1. PWM/PFM Automatic Switching

If PWM/PFM automatic switching control is selected and the step-up ratio is low (e.g., from 4.5 V to 5.0 V), the control

mode remains in PFM setting over the whole load range, since the duty ratio under continuous-duty condition is smaller

than the PFM duty ratio of the XC9504 series.

The output voltage's ripple voltage becomes substantially high under

heavy load conditions, with the XC9504 series appearing to be producing an abnormal oscillation.

If this operation

becomes a concern, set pins PWM to High to set the control mode to PWM setting.

For use under the

above-mentioned condition, measured data of PWM/PFM automatic switching control shown on the data sheets are

available up to IOUT = 100 mA.

2. Ratings

Use the XC9504 series and peripheral components within the limits of their ratings.

■EXTERNAL COMPONENTS USED FOR THE TEST CIRCUITS

■NOTE ON USE

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