XC9503 Series
(2) Efficiency vs. Output Current
2ch. Step-down DC/DC Controller ICs
FOSC=300kHz, V
OUT1, 2
=1.0V
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP162A12A6P
PWM/PFM Switching Control
PWM Control
FOSC=300kHz, V
OUT1, 2
=1.0V
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP162A12A6P
PWM/PFM Switching Control
PWM Control
100
Efficiency1, 2 E
FFI1, 2
(%)
80
60
100
Efficiency1, 2 E
FFI1, 2
(%)
80
10.0V
6.0V
8.0V
60
40
20
VIN=5.0V
0
4.2V
40
20
0
0.1
1
10
100
1000
Output Current1, 2 I
OUT1, 2
(mA)
3.3V
VIN=2.7V
0.1
1
10
100
1000
Output Current1, 2 I
OUT1, 2
(mA)
FOSC=300kHz, V
OUT1, 2
=1.8V
100
Efficiency1, 2 E
FFI1, 2
(%)
80
VIN= 2.7V
60
3.3V
40
20
0
0.1
1
10
100
1000
Output Current1, 2 I
OUT1, 2
(mA)
4.2V
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP162A12A6P
FOSC=300kHz, V
OUT1, 2
=1.8V
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP162A12A6P
100
Efficiency1, 2 E
FFI1, 2
(%)
80
10.0V
60
40
6.0V
20
0
0.1
1
10
100
1000
Output Current1, 2 I
OUT1, 2
(mA)
VIN=5.0V
8.0V
FOSC=300kHz, V
OUT1, 2
=2.5V
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP162A12A6P
FOSC=300kHz, V
OUT1, 2
=2.5V
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP162A12A6P
PWM/PFM Switching Control
PWM Control
100
Efficiency1, 2 E
FFI1, 2
(%)
80
100
Efficiency1, 2 E
FFI1, 2
(%)
80
10V
60
VIN=2.7V
60
40
20
PWM/PFM Switching Control
PWM Control
3.3V
4.2V
VIN=5.0V
40
20
0
6.0V
8.0V
0
0.1
1
10
100
1000
Output Current1, 2 I
OUT1, 2
(mA)
0.1
1
10
100
1000
Output Current1, 2 I
OUT1, 2
(mA)
* When setting VOUT1, 2 =1.0V, VIN=8.0V, 10.0V,
CL should be 94µF (Tantalum) + 100µF (OS-COM)
16
TOREX [ TOREX SEMICONDUCTOR ]
