XC9503 Series
Electrical Characteristics
Common Characteristics
PARAMETER
Supply Voltage
Max. Input Voltage
Output Voltage Range
(note 1)
Supply Current 1
SYMBOL
VDD
VIN
VOUTSET
IDD1
VIN
≥
2.0V, IOUT1, 2=1mA
2ch. Step-down DC/DC Controller ICs
XC9503B093A
Ta=25
O
C
CONDITIONS
MIN.
2.0
10.0
0.9
0.9
-
-
-
-
-
255
0.65
-
-
-
-
-
-
-
TYP.
-
-
-
-
70
60
70
80
1.0
300
-
-
-
-
-
-
-
-
MAX.
10.0
-
10.0
10.0
140
120
150
150
3.0
345
-
0.20
0.50
-0.50
0.50
-0.50
0.50
-0.50
UNITS
V
V
V
V
µA
µA
µA
µA
µA
kHz
V
V
µA
µA
µA
µA
µA
µA
TEST
CIRCUIT
1
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
VOUT1
VOUT2
FB1, 2=0V
EN1=3.0V, EN2=0V, FB1=0V
Supply Current 1-1
IDD1-1
EN2=3.0V, EN1=0V, FB2=0V
FB1=0V, FB2=1.0V
Supply Current 1-2
IDD1-2
FB1=1.0V, FB2=0V
Supply Current 2
IDD2
FB1, 2=1.0V
Stand-by Current
ISTB
Same as IDD1, EN1=EN2=0V
Switching Frequency
FOSC
Same as IDD1
EN1,2 "High" Voltage
VENH
FB1,2=0V
EN1,2 "Low" Voltage
VENL
FB1,2=0V
EN1,2 "High" Current
IENH
EN1,2=3.0V
EN1,2 "Low" Current
IENL
EN1,2=0V, FB1,2=3.0V
PWM1,2 "High" Current
IPWMH FB1, 2=3.0V, PWM=3.0V
PWM1,2 "Low" Current
IPWML
FB1, 2=3.0V, PWM=0V
FB1,2 "High" Current
IFBH
FB1, 2=3.0V
FB1,2 "Low" Current
VFBL
FB1, 2=1.0V
Unless otherwise stated, VDD=3.0V, PWM1,2=3.0V, EN1, 2 =3.0V
Output 1 Characteristics
PARAMETER
FB1 Voltage
Minimum Operation Voltage
Maximum Duty Ratio 1
Minimum Duty Ratio1
PFM Duty Ratio 1
Efficiency1 (note 2)
SYMBOL
VFB1
VINmin1
MAXDTY1
MINDTY1
PFMDTY1
EFFI1
Step-down Controller
CONDITIONS
VIN=3.0V, IOUT1=10mA
Same as IDD1
Same as IDD2
No Load, VPWM1=0V
IOUT1=250mA
P-ch MOSFET : XP162A12A6P
VOUT1
×
0.95V, EN1=0V→0.65V
MIN.
0.882
-
100
-
22
-
TYP.
0.900
-
-
-
30
92
MAX.
0.918
2.0
-
0
38
-
20.0
47
30
-
0.20
UNITS
V
V
%
%
%
%
mS
Ω
Ω
V
V
TEST
CIRCUIT
3
1
2
2
4
4
4
5
5
4
4
Soft-Start Time1
TSS1
5.0
10.0
EXT1 "High" ON Resistance REXTBH1 EN1=0, EXT1=VDD-0.4V
-
28
EXT1 "Low" ON Resistance
REXTBL1 FB2=0V, EXT1=0.4V
-
22
PWM1 "High" Voltage
VPWMH1 No Load
0.65
-
PWM1 "Low" Voltage
VPWML1 No Load
-
-
Unless otherwise stated, VDD=EN1=PWM1=3.0V, PWM2=EN2=GND, EXT2=OPEN, FB2=OPEN, VIN=5.0V
Output 2 Characteristics
PARAMETER
FB2 Voltage
Minimum Operation Voltage
Maximum Duty Ratio 2
Minimum Duty Ratio 2
PFM Duty Ratio 2
Efficiency2 (note 2)
SYMBOL
VFB2
VINmin2
MAXDTY2
MINDTY2
PFMDTY2
EFFI2
Step-down Controller
CONDITIONS
VIN=3.0V, IOUT2=10mA
Same as IDD1
Same as IDD2
No Load, VPWM2=0V
IOUT2=250mA
P-ch MOSFET : XP162A12A6P
VOUT2
×
0.95V, EN2=0V→0.65V
MIN.
0.882
-
100
-
22
-
TYP.
0.900
-
-
-
30
92
MAX.
0.918
2.0
-
0
38
-
20.0
47
30
-
0.20
UNITS
V
V
%
%
%
%
mS
Ω
Ω
V
V
TEST
CIRCUIT
6
1
2
2
7
7
7
5
5
7
7
Soft-Start Time 2
TSS2
5.0
10.0
EXT2 "High" ON Resistance REXTBH2 EN2=0, EXT2=VDD-0.4V
-
28
EXT2 "Low" ON Resistance
REXTBL2 FB2=0V, EXT2=0.4V
-
22
PWM2 "High" Voltage
VPWMH2 No Load
0.65
-
PWM2 "Low" Voltage
VPWML2 No Load
-
-
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V
Notes
1) Please be careful not to exceed the breakdown voltage level of the peripheral parts.
2) EFFI={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100
5
TOREX [ TOREX SEMICONDUCTOR ]
