Electrical Characteristics

XC9503B092A

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)

7

7

Ω

5

Ω

EFFI2

P-ch MOSFET : XP162A12A6P

92

-

IOUT2=250mA

100

-

-

Same as IDD1

-

EN1=0, EXT1=VDD-0.4V

22

-

MIN.

VIN=3.0V, IOUT1=10mA

0.882

Efficiency1 (note 2)

EFFI1

-

P-ch MOSFET : XP162A12A6P

V

10.0

-

FB1,2 "High" Current

IFBH

FB1, 2=3.0V

VIN

-

Max. Input Voltage

PWM1,2 "Low" Current

PFM Duty Ratio 1

PFMDTY1 No Load, VPWM1=0V

FB1, 2=1.0V

FB1,2 "Low" Current

VFBL

PARAMETER

SYMBOL

CONDITIONS

VFB1

--

1

Supply Current 2

IDD2

FB1, 2=1.0V

-

60

140

5.0

VPWMH2

No Load

EN2=0, EXT2=VDD-0.4V

0.65

-

PARAMETER

SYMBOL

CONDITIONS

2

FB2 Voltage

VFB2

VIN=3.0V, IOUT2=10mA

0.882

UNITS

MIN.

PARAMETER

SYMBOL

Supply Voltage

VDD

-

TYP.

MIN.

0.9

2.0

-

PWM1,2 "High" Current

IPWMH

Output Voltage Range

(note 1)

VOUTSET

-

-

-

IPWML

FB1, 2=3.0V, PWM=0V

FB1, 2=0V

TSS2

VOUT2

× 0.95V, EN2=0V→0.65V

FB1=0V, FB2=1.0V

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

FB1, 2=3.0V, PWM=3.0V

Same as IDD1

Same as IDD2

-

-

PWM2 "High" Voltage

5

47

22

28

30

EXT2 "High" ON Resistance

REXTBH2

PWM2 "Low" Voltage

VPWML2

No Load

MINDTY2

EXT2 "Low" ON Resistance

REXTBL2 FB2=0V, EXT2=0.4V

Soft-Start Time 2

Efficiency2 (note 2)

0.20

-

-

7

V

V

%

7

7

Minimum Operation Voltage

VINmin2

-

PFM Duty Ratio 2

PFMDTY2 No Load, VPWM2=0V

Minimum Duty Ratio 2

22

-

MAXDTY2

%

TYP.

30

38

%

%

MAX.

0.900

0.918

50

10.0

0

2.0

-

-0.50

-

0.50

-

180

10.0

10.0

CONDITIONS

2ch. Step-down DC/DC Controller ICs

TEST

CIRCUIT

MAX.

UNITS

0.9

Supply Current 1

IDD1

-

3.0

µA

Stand-by Current

ISTB

Same as IDD1, EN1=EN2=0V

-

1.0

V

207

kHz

Switching Frequency

FOSC

Same as IDD1

153

Supply Current 1-1

IDD1-1

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

--

V

EN1,2 "High" Voltage

VENH

FB1,2=0V

0.65

-

0.20

V

EN1,2 "Low" Voltage

VENL

FB1,2=0V

-

-

0.50

µA

EN1,2 "High" Current

IENH

EN1,2=3.0V

-

-

-0.50

µA

EN1,2 "Low" Current

IENL

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

-

0.918

0.900

-0

-

38

30

-

0.20

-

-

10.0

20.0

92

-

Soft-Start Time1

TSS1

PWM1 "Low" Voltage

-

FB2=0V, EXT1=0.4V

EXT1 "Low" ON Resistance

REXTBL1

-

0.65

VPWML1

No Load

VOUT1

× 0.95V, EN1=0V→0.65V

5.0

µA

60

120

µA

mS

VIN

≥ 2.0V, IOUT1, 2=1mA

V

-

10.0

XC9503 Series

1

1

2

2

2

2

V

µA

2

2

2

2

µA

2

2

4

UNITS

V

µA

%

%

%

V

4

4

6

V

TEST

CIRCUIT

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

1

2

2

2

110

µA

2

Supply Current 1-2

IDD1-2

-

60

130

µA

FB1=1.0V, FB2=0V

TYP.

MAX.

TEST

CIRCUIT

2

µA

-

0.50

-

-0.50

-

3

Minimum Operation Voltage

VINmin1

-

-

2.0

V

1

FB1 Voltage

%

2

Minimum Duty Ratio1

MINDTY1

2

Maximum Duty Ratio 1

MAXDTY1

100

-

4

EXT1 "High" ON Resistance

REXTBH1

-

28

47

Ω

5

4

IOUT1=250mA

22

30

Ω

5

PWM1 "High" Voltage

V

Same as IDD2

Maximum Duty Ratio 2

20.0

mS

VPWMH1

No Load

4