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XC9504
Series
Circuit 1, Circuit 2 
L1, L2: 22
H (CDRH5D28, SUMIDA) : XC9504B092A 
H (CDRH5D28, SUMIDA) : XC9504B093A 
H (CDRH5D28, SUMIDA) : XC9504B095A 
SD1, SD2 :  CRS02 (Schottky, TOSHIBA) 
 EC10QS06 (Schottky, NIHON INTER) 
C
L1
, C
L2
 :  16MCE476MD2 (Tantalum, NIHON CHEMICON) 
 35MCE335MB x 3 (Tantalum, NIHON CHEMICON) 
C
IN
 :  16MCE476MD2 
NPN Tr 1 : 2SD1628 (SANYO) 
PNP Tr 2 : 2SA1213 (TOSHIBA) 
R
FB
 :  Please use by the conditions as below. 
R
FB11
 + R
FB12
 1M
R
FB21
 + R
FB22
 1M
R
FB11 
/ R
FB12 
= (Setting Output Voltage / 0.9) - 1 
V
OUT2
 = (0.9 - V
OUT1
) / (R
FB21
 / R
FB22
) + 0.9 
C
FB
 :  
fzfb = 1 /(2
C
FB1
fzfb = 1 /(2
C
FB2
Circuit 4 
L1 : 22
H (CDRH5D28 SUMIDA) 
SD 1 : MA2Q737 (Schottky, MATSUSHITA) 
C
L 1 
: 16MCE476MD2 (Tantalum, NIHONCHEMICON) 
C
IN
 : 16MCE476MD2 (Tantalum, NIHONCHEMICON) 
N-ch MOSFET : XP161A1355P (TOREX) 
Circuit 5 
L1 : 22
H (CDRH5D28, SUMIDA) : XC9504B092A 
 15
H (CDRH5D28, SUMIDA) : XC9504B093A 
 10
H (CDRH5D28, SUMIDA) : XC9504B095A 
SD 1 : MA2Q737 (Schottky, MATSUSHITA) 
C
L 1 
: 16MCE476MD2 (Tantalum, NIHONCHEMICON) 
C
IN
 : 16MCE476MD2 (Tantalum, NIHONCHEMICON) 
N-ch MOSFET : XP161A1355P (TOREX) 
Circuit 7 
L2 : 22
H (CDRH5D28, SUMIDA) : XC9504B092A 
 15
H (CDRH5D28, SUMIDA) : XC9504B093A 
 10
H (CDRH5D28, SUMIDA) : XC9504B095A 
SD 2 : MA2Q737 (Schottky, MATSUSHITA) 
C
L 2 
: 16MCE476MD2 (Tantalum, NIHONCHEMICON) 
C
IN
 : 16MCE476MD2 (Tantalum, NIHONCHEMICON) 
P-ch MOSFET : XP162A12A6P (TOREX) 
 15
 10
R
FB11
) = 1kHz to 50kHz (12kHz usual) 
R
FB21
) = 1kHz to 50kHz (12kHz usual). 
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 I
OUT
 = 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