XC9502 Series
!
Electrical Characteristics
Common Characteristics
PARAMETER
Supply Voltage (note 1)
Max. Input Voltage
Output Voltage Range
(note 3)
SYMBOL
VDD
VIN
2ch. Step-up / down DC/DC Controller ICs
XC9502B095
(FOSC=500kHz)
CONDITIONS
MIN.
2.0
10.0
0.9
0.9
2.0
0.9
-
-
-
-
-
-
-
425
0.65
-
-
-
-
-
-
-
TYP.
-
-
-
-
-
-
130
110
80
130
90
90
1.0
500
-
-
-
-
-
-
-
-
MAX.
10.0
-
-
VIN
10.0
VIN
250
220
150
240
190
190
3.0
575
-
0.20
0.50
-0.50
0.50
-0.50
0.50
-0.50
Ta=25
O
C
UNITS
V
V
V
V
V
V
µA
µA
µA
µA
µA
µA
µA
kHz
V
V
µA
µA
µA
µA
µA
µA
TEST
CIRCUIT
1
1
1
2
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
VDD
≥
2.0V, IOUT1, 2=1mA
VOUTSET VDD≠VOUT1
VIN
≥
0.9V, IOUT1, 2=1mA
VDD=VOUT1
Supply Current 1
IDD1
FB1, 2=0V
Supply Current 1-1
IDD1-1
EN1=3.0V, EN2=0V, FB1=0V
Supply Current 1-2
IDD1-2
EN2=3.0V, EN1=0V, FB2=0V
Supply Current 1-3
IDD1-3
FB1=0V, FB2=1.0V
Supply Current 1-4
IDD1-4
FB1=1.0V, FB2=0V
Supply Current 2
IDD2
FB1, 2=1.0V
ISTB
Same as IDD1, EN1=EN2=0V
Stand-by Current
Switching Frequency
FOSC
Same as IDD1
EN1,2 "High" Voltage
VENH
FB1,2=0V
EN1,2 "Low" Voltage
VENL
FB1,2=0V
IENH
EN1,2=3.0V
EN1,2 "High" Current
IENL
EN1,2=0V, FB1,2=3.0V
EN1,2 "Low" Current
PWM1,2 "High" Current
IPWMH FB1, 2=3.0V, PWM=3.0V
PWM1,2 "Low" Current
IPWML
FB1, 2=3.0V, PWM=0V
IFBH
FB1, 2=3.0V
FB1,2 "High" Current
VFBL
FB1, 2=1.0V
FB1,2 "Low" Current
Unless otherwise stated, VDD=3.0V, PWM1,2=3.0V, EN1, 2 =3.0V
Output 1 Characteristics
PARAMETER
FB1 Voltage
Operation Start-up Voltage1
(note 2)
Oscillation Start-up Voltage1
Maximum Duty Ratio1
Minimum Duty Ratio1
PFM Duty Ratio1
Efficiency1 (note 4)
SYMBOL
VFB1
Step-up Controller
CONDITIONS
VOUT1
VOUT2
VOUT1
VOUT2
Ta=25
O
C
MIN.
0.882
-
-
-
75
-
22
TYP.
0.900
-
-
-
80
-
30
MAX.
0.918
0.9
2.0
0.8
85
0
38
-
20.0
47
30
-
0.20
UNITS
V
V
V
V
%
%
%
%
mS
Ω
Ω
V
V
TEST
CIRCUIT
VDD=3.0V, VIN=1.5V, IOUT1=10mA
Using Tr: 2SD1628,
VST1-1 IOUT1=1.0mA, RFB11=200kΩ, RFB12=75kΩ
VDD
≠
VOUT1: IOUT1=1mA
VST2-1 FB1=0V
MAXDTY1 Same as IDD1
MINDTY1 Same as IDD2
PFMDTY1 No Load, VPWM1=0V
EFFI1
IOUT=130mA
4
2
1
3
3
3
5
5
5
6
6
5
5
83
-
N-ch MOSFET:XP161A1355P
VOUT1
×
0.95V, EN1=0V→0.65V
Soft-Start Time1
TSS1
5.0
10.0
28
EXT1 "High" ON Resistance REXTBH1 FB1=0, EXT1=VDD-0.4V
-
22
EXT1 "Low" ON Resistance
REXTBL1 EN1=FB2=0V, EXT1=0.4V
-
PWM1 "High" Voltage
VPWMH1 No Load
0.65
-
PWM1 "Low" Voltage
VPWML1 No Load
-
-
Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V
Output 2 Characteristics
PARAMETER
FB2 Voltage
Minimum Operation Voltage
Maximum Duty Ratio2
Minimum Duty Ratio2
PFM Duty Ratio2
Efficiency2
SYMBOL
VFB2
VINmin
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
MIN.
0.882
-
100
-
22
TYP.
0.900
-
-
-
30
Ta=25
O
C
MAX.
0.918
2.0
-
0
38
-
20.0
47
30
-
0.20
UNITS
V
V
%
%
%
%
mS
Ω
Ω
V
V
TEST
CIRCUIT
7
1
3
3
8
8
8
6
6
8
8
-
91
P-ch MOSFET : XP162A12A6P
VOUT2
×
0.95V, EN2=0V→0.65V
Soft-Start Time2
TSS2
5.0
10.0
28
EXT2 "High" ON Resistance REXTBH2 EN2=0, EXT2=VDD-0.4V
-
22
EXT2 "Low" ON Resistance
REXTBL2 FB2=0V, EXT2=0.4V
-
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) Although the IC's step-up operations start from a V
DD
of 0.8V, the output voltage and switching frequency are stabilized at V
DD
≥
2.0V. Therefore, a V
DD
of more than 2.0V is recommended when V
DD
is supplied from V
IN
or other power sources.
2) Although the IC's switching operations start from a V
IN
of 0.9V, the IC's power supply pin (V
DD
) and output voltage monitor pin
(FB1) should be connected to V
OUT1
. With operations from V
IN
=0.9V, the 2nd channel's (output 2) EN2 pin should be set to chip
disable. Once ouput voltage V
OUT1
is more than 2.0V, the EN2 pin should be set to chip enable.
3) Please be careful not to exceed the breakdown voltage level of the peripheral parts.
4) EFFI={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100
6
TOREX [ TOREX SEMICONDUCTOR ]
