Electrical Characteristics

XC9503B095A

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)

Supply Current 1

IDD1

FB1, 2=0V

PARAMETER

FB1,2 "Low" Current

VFBL

FB1, 2=1.0V

PWM1,2 "Low" Current

IPWML

FB1, 2=3.0V, PWM=0V

EN1,2 "Low" Current

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

PARAMETER

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNITS

TEST

CIRCUIT

-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

-

28

47

Ω

5

EXT2 "High" ON Resistance

REXTBH2 EN2=0, EXT2=VDD-0.4V

-

10.0

20.0

mS

7

Soft-Start Time 2

TSS2

VOUT2

× 0.95V, EN2=0V→0.65V

5.0

91

-

%

7

MAXDTY2 Same as IDD1

-

P-ch MOSFET : XP162A12A6P

-

Minimum Operation Voltage

IOUT2=250mA

Efficiency2 (note 2)

EFFI2

PFM Duty Ratio 2

PFMDTY2 No Load, VPWM2=0V

Maximum Duty Ratio 2

%

22

30

38

TEST

CIRCUIT

0.900

0.918

V

6

7

V

No Load

No Load

4

-

-V

4

1

30

-

0.20

PWM1 "High" Voltage

VPWMH1

0.65

-

PWM1 "Low" Voltage

VPWML1

22

5

Ω

5

EXT1 "Low" ON Resistance

REXTBL1 FB2=0V, EXT1=0.4V

-

-28

47

Ω

Efficiency1 (note 2)

EXT1 "High" ON Resistance

REXTBH1 EN1=0, EXT1=VDD-0.4V

10.0

20.0

mS

-

EFFI1

4

Soft-Start Time1

TSS1

VOUT1

× 0.95V, EN1=0V→0.65V

5.0

PFM Duty Ratio 1

PFMDTY1

22

No Load, VPWM1=0V

2

IOUT1=250mA

-

30

38

%

4

P-ch MOSFET : XP162A12A6P

2

4

Maximum Duty Ratio 1

MAXDTY1 Same as IDD1

100

-0.50

µA

2

TYP.

MAX.

-

SYMBOL

CONDITIONS

-

UNITS

-

2.0

1

Minimum Operation Voltage

VINmin1

-

2

FB1,2 "High" Current

IFBH

FB1, 2=3.0V

-

-

0.50

µA

-

0.50

µA

-

-

-0.50

µA

PWM1,2 "High" Current

IPWMH

FB1, 2=3.0V, PWM=3.0V

-

-0.50

µA

2

2

2

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

500

575

kHz

2

Switching Frequency

FOSC

Same as IDD1

425

1.0

3.0

µA

2

Stand-by Current

ISTB

Same as IDD1, EN1=EN2=0V

-

190

µA

FB1=1.0V, FB2=0V

2

-

µA

150

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

Supply Current 1-1

IDD1-1

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

-80

Supply Current 2

IDD2

FB1, 2=1.0V

100

2

2

FB1=0V, FB2=1.0V

Supply Current 1-2

IDD1-2

-

100

180

µA

2

1

-

10.0

V

Output Voltage Range

(note 1)

Voutset

-

10.0

VIN

≥ 2.0V, IOUT1, 2=1mA

0.9

0.9

-

--

V

V

90

170

µA

1

Max. Input Voltage

VIN

10.0

-

10.0

V

1

Supply Voltage

VDD

2.0

XC9503 Series

2ch. Step-down DC/DC Controller ICs

TEST

CIRCUIT

FB1 Voltage

VFB1

VIN=3.0V, IOUT1=10mA

0.882

0.900

0.918

V

3

MIN.

Minimum Duty Ratio1

MINDTY1 Same as IDD2

-

V

-%

91

%

-

-0

%

PARAMETER

2.0

V

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNITS

VFB2

FB2 Voltage

2

100

-

-

%

-

VIN=3.0V, IOUT2=10mA

0.882

VINmin2

2

Minimum Duty Ratio 2

MINDTY2 Same as IDD2

-

-

0

%

6