High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303 Series
(2) Efficiency vs. Output Current
FOSC=300kHz, VOUT=3.3V
FOSC=300kHz, VOUT=5.0V
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
100
100
PWM/PFM Switching Control
PWM Control
90
PWM/PFM Switching Control
PWM Control
5.0V
90
80
70
60
50
40
30
20
10
0
80
70
60
6.0V
50
40
30
20
10
0
VIN=3.0V
VIN=2.7V
4.2V
1000
4.2V
3.3V
0.1
1
10
100
1000
10000
0.1
1
10
100
10000
Output Current IOUT (mA)
Output Current IOUT (mA)
FOSC=300kHz, VOUT=3.3V
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02
Tr1:IRLMS6702, Tr2:IRLMS1902, Tr3:IRLML2502
100
PWM/PFM Switching Control
PWM Control
90
80
70
60
50
40
30
20
10
0
4.2V
VIN=2.7V
0.1
1
10
100
1000
10000
Output Current IOUT (mA)
Semiconductor Ltd.
10
TOREX [ Torex Semiconductor ]
