Electrical Characteristics

XC9503B093A

Common Characteristics

Ta=25

VOUT1

VOUT2

Unless otherwise stated, VDD=3.0V, PWM1,2=3.0V, EN1, 2 =3.0V

Output 1 Characteristics

Step-down Controller

Unless otherwise stated, VDD=EN1=PWM1=3.0V, PWM2=EN2=GND, EXT2=OPEN, FB2=OPEN, VIN=5.0V

Output 2 Characteristics

Step-down Controller

Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V

Notes

1)

2)

Please be careful not to exceed the breakdown voltage level of the peripheral parts.

EFFI={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100

-V

7

7

0.20

V

0.65

PWM2 "Low" Voltage

VPWML2

-

No Load

No Load

PWM2 "High" Voltage

VPWMH2

--

22

30

Ω

5

EXT2 "Low" ON Resistance

REXTBL2 FB2=0V, EXT2=0.4V

-

7

EXT2 "High" ON Resistance

REXTBH2 EN2=0, EXT2=VDD-0.4V

-

28

47

Ω

5

Soft-Start Time 2

TSS2

VOUT2

× 0.95V, EN2=0V→0.65V

5.0

7

IOUT2=250mA

92

-

%

7

30

Efficiency2 (note 2)

EFFI2

-

P-ch MOSFET : XP162A12A6P

PFM Duty Ratio 2

PFMDTY2 No Load, VPWM2=0V

22

0.900

0.918

V

6

FB2 Voltage

VFB2

VIN=3.0V, IOUT2=10mA

0.882

TYP.

MAX.

UNITS

TEST

CIRCUIT

PARAMETER

SYMBOL

CONDITIONS

MIN.

-V

4

4

0.20

V

0.65

PWM1 "Low" Voltage

VPWML1

-

No Load

No Load

PWM1 "High" Voltage

VPWMH1

--

22

30

Ω

5

EXT1 "Low" ON Resistance

REXTBL1 FB2=0V, EXT1=0.4V

-

4

EXT1 "High" ON Resistance

REXTBH1 EN1=0, EXT1=VDD-0.4V

-

28

47

Ω

5

2

38

P-ch MOSFET : XP162A12A6P

Soft-Start Time1

TSS1

VOUT1

× 0.95V, EN1=0V→0.65V

5.0

10.0

20.0

mS

2

IOUT1=250mA

Minimum Duty Ratio1

MINDTY1 Same as IDD2

No Load, VPWM1=0V

--

0

%

2.0

V

1

Maximum Duty Ratio 1

MAXDTY1 Same as IDD1

100

-

-

%

Minimum Operation Voltage

VINmin1

-

-

-0.50

µA

2

FB1,2 "Low" Current

VFBL

FB1, 2=1.0V

-

-

0.50

µA

2

FB1,2 "High" Current

IFBH

FB1, 2=3.0V

-

-

-0.50

µA

2

PWM1,2 "Low" Current

IPWML

FB1, 2=3.0V, PWM=0V

-

-

0.50

µA

2

PWM1,2 "High" Current

IPWMH

FB1, 2=3.0V, PWM=3.0V

-

-

-0.50

µA

2

EN1,2 "Low" Current

IENL

EN1,2=0V, FB1,2=3.0V

-

-

0.50

µA

2

EN1,2 "High" Current

IENH

EN1,2=3.0V

-

-

0.20

V

2

EN1,2 "Low" Voltage

VENL

FB1,2=0V

-

--

V

2

EN1,2 "High" Voltage

VENH

FB1,2=0V

0.65

300

345

kHz

2

Switching Frequency

FOSC

Same as IDD1

255

1.0

3.0

µA

2

Stand-by Current

ISTB

Same as IDD1, EN1=EN2=0V

-

2

FB1=1.0V, FB2=0V

Supply Current 2

IDD2

FB1, 2=1.0V

-

80

150

µA

2

µA

EN2=3.0V, EN1=0V, FB2=0V

FB1=0V, FB2=1.0V

Supply Current 1-2

IDD1-2

-

70

150

µA

Supply Current 1

V

1

-

10.0

V

IDD1

-

10.0

70

140

VIN

≥ 2.0V, IOUT1, 2=1mA

0.9

0.9

-

--

V

1

Max. Input Voltage

VIN

10.0

-

10.0

V

1

Supply Voltage

VDD

2.0

TEST

CIRCUIT

XC9503 Series

2ch. Step-down DC/DC Controller ICs

PARAMETER

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNITS

FB1, 2=0V

2

Supply Current 1-1

Output Voltage Range

(note 1)

VOUTSET

IDD1-1

EN1=3.0V, EN2=0V, FB1=0V

-

60

120

µA

2

PARAMETER

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNITS

TEST

CIRCUIT

0.918

V

3

FB1 Voltage

VFB1

VIN=3.0V, IOUT1=10mA

0.882

PFMDTY1

22

30

0.900

-

%

4

Efficiency1 (note 2)

EFFI1

-

92

-

%

4

PFM Duty Ratio 1

Minimum Operation Voltage

VINmin2

-

-

2.0

V

1

Maximum Duty Ratio 2

MAXDTY2 Same as IDD1

100

-

-

%

2

2

Minimum Duty Ratio 2

MINDTY2 Same as IDD2

-

-

0

%

38

%

10.0

20.0

mS

5