! Electrical Characteristics

XC9502B092

Common Characteristics

(FOSC=180kHz)

Ta=25

VOUT1

VOUT2

VOUT1

VOUT2

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

Output 1 Characteristics

Step-up Controller

Ta=25

Using Tr: 2SD1628,

Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V

Output 2 Characteristics

Step-down Controller

Ta=25

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

Notes

1)

2)

3)

4)

IOUT2=250mA

%

MAXDTY2

100

-

-

Same as IDD1

%

MAX.

0.900

0.918

Efficiency1 (note 4)

EFFI1

IOUT=130mA

-

N-ch MOSFET:XP161A1355P

Oscillation Start-up Voltage1

VST2-1

-

MIN.

0.882

-

IFBH

FB1, 2=3.0V

FB1, 2=1.0V

FB1,2 "Low" Current

-

60

130

FB1=1.0V, FB2=0V

Same as IDD2

-

-

0.900

Max. Input Voltage

VIN

10.0

-

V

1

Supply Current 1-4

-

PARAMETER

SYMBOL

CONDITIONS

µA

FB1, 2=1.0V

3.0

µA

Stand-by Current

ISTB

Same as IDD1, EN1=EN2=0V

UNITS

MIN.

PARAMETER

SYMBOL

CONDITIONS

3

Efficiency2 (note 4)

EFFI2

P-ch MOSFET : XP162A12A6P

8

92

--

%

8

8

V

8

Although the IC's step-up operations start from a VDD of 0.8V, the output voltage and switching frequency are stabilized at VDD

≥

2.0V. Therefore, a VDD of more than 2.0V is recommended when VDD is supplied from VIN or other power sources.

V

TYP.

FB1 Voltage

VFB1

Soft-Start Time1

EXT1 "Low" ON Resistance

VDD=3.0V, VIN=1.5V, IOUT1=10mA

0.65

FB1=0V

-

2.0

-

PWM1,2 "Low" Current

IDD1-4

IPWML

FB1, 2=3.0V, PWM=0V

FB1, 2=0V

Supply Current 2

IDD2

Soft-Start Time2

PARAMETER

SYMBOL

MIN.

0.9

Supply Voltage (note 1)

VDD

VFBL

FB1,2 "High" Current

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

PWM1,2 "High" Current

IPWMH

VPWMH2

No Load

EN2=0, EXT2=VDD-0.4V

EXT2 "Low" ON Resistance

REXTBL2 FB2=0V, EXT2=0.4V

EXT2 "High" ON Resistance

REXTBH2

Minimum Operation Voltage

5.0

-

Ω

6

%

10.0

30

38

-

6

47

22

28

30

PWM2 "Low" Voltage

VPWML2

No Load

-

PWM2 "High" Voltage

8

Ω

-

-

0.20

-

-

TSS2

VOUT2

× 0.95V, EN2=0V→0.65V

VINmin

-

PFM Duty Ratio2

PFMDTY2 No Load, VPWM2=0V

Minimum Duty Ratio2

22

MINDTY2

MAX.

TYP.

120

85

-

60

130

0

2.0

-

%

-

VIN

-

60

-

VIN

10.0

CONDITIONS

2ch. Step-up / down DC/DC Controller ICs

TEST

CIRCUIT

MAX.

UNITS

-

TYP.

XC9502 Series

-

Output Voltage Range

(note 3)

VOUTSET

0.9

2.0

Supply Current 1-1

IDD1-1

Supply Current 1

IDD1

VIN

≥ 0.9V, IOUT1, 2=1mA

VDD=VOUT1

110

µA

Supply Current 1-2

IDD1-2

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

-

50

160

µA

Supply Current 1-3

IDD1-3

FB1=0V, FB2=1.0V

-

70

-

1.0

180

207

Switching Frequency

FOSC

Same as IDD1

153

--

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

-

FB1, 2=3.0V, PWM=3.0V

-

0.918

-

0.50

-

-0.50

-0.50

-

0.50

-

V

V

Operation Start-up Voltage1

(note 2)

VST1-1

-

-

IOUT1=1.0mA, RFB11=200k

Ω, RFB12=75kΩ

VDD

≠ VOUT1: IOUT1=1mA

0.9

%

80

85

-

2.0

0.8

-

28

47

20.0

10.0

30

38

-0

FB2 Voltage

VFB2

VIN=3.0V, IOUT2=10mA

0.882

EXT1 "High" ON Resistance

REXTBL1

-

-

-

22

30

-

PWM1 "High" Voltage

VPWMH1

No Load, VPWM1=0V

22

Maximum Duty Ratio1

MAXDTY1 Same as IDD1

PFM Duty Ratio1

75

PFMDTY1

Minimum Duty Ratio1

MINDTY1

TSS1

VOUT1

× 0.95V, EN1=0V→0.65V

5.0

REXTBH1 FB1=0, EXT1=VDD-0.4V

No Load

-

-

EN1=FB2=0V, EXT1=0.4V

No Load

0.65

%

V

VDD

≥ 2.0V, IOUT1, 2=1mA

VDD

≠VOUT1

V

µA

70

160

-

-

-

0.9

V

V

-

10.0

3

1

1

3

3

2

3

3

3

3

V

V

µA

µA

kHz

µA

UNITS

V

µA

µA

µA

5

5

V

Ω

mS

5

3

3

6

6

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

-

Same as IDD2

0.20

V

PWM1 "Low" Voltage

VPWML1

Maximum Duty Ratio2

20.0

mS

7

TEST

CIRCUIT

V

TEST

CIRCUIT

Ω

%

5

Although the IC's switching operations start from a VIN of 0.9V, the IC's power supply pin (VDD) and output voltage monitor pin

(FB1) should be connected to VOUT1. With operations from VIN=0.9V, the 2nd channel's (output 2) EN2 pin should be set to chip

disable. Once ouput voltage VOUT1 is more than 2.0V, the EN2 pin should be set to chip enable.

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

3

3

3

3

3

3

3

3

4

5

2

3

1

V

1

3

3

4