ELECTRICAL CHARACTERISTICS

XC9210B093

(FOSC = 300kHz)

Ta=25

VOUT

Unless otherwise stated, VDD = 3.0V, CE = 3.0V, PWM = 3.0V, FB = 3.0V, EXT1, 2=OPEN, MODE = 3.0V, VIN=4.2V

Notes 1)

2)

3)

Tr1 : CPH3308

(SANYO)

Tr2 : CPH3408

(SANYO)

L : 22µH

(SUMIDA CDRH125)

CL : 16V, 47µF x 2

(NICHICEMI Tantalum MCE Series)

CIN : 16V, 47µF

(NICHICEMI Tantalum MCE Series)

RFB1 : 200k

Ω

RFB2 : 75k

Ω

CFB : 62pF

4

-0

%

2

Minimum Duty Ratio

MINDTY

Same as IDD2

-

--

%

2

Maximum Duty Ratio

MAXDTY

Same as IDD1

100

-

2.0

V

1

Minimum Operation Voltage

VINmin

-

0.900

0.918

V

3

FB Voltage

VFB

VIN=3.0V, IOUT=10mA

0.882

--

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

FB "Low" Current

2

31

-19

30

5

-

VIN

≥ 2.0V, MODE = 0V, IOUT=1mA

-V

4

2

EXT2 = VDD - 0.4V

Ω

IFBH

FB "High" Current

MODE "Low" Current

MODE "High" Current

IMODEL

CE "Low" Current

ICEH

CE "High" Current

PWM "Low" Current

PWM "High" Current

IMODEH

VOUTSET

EXT2 "High" ON Resistance

EXT1 "Low" ON Resistance

EXT1 "High" ON Resistance

Soft-Start Time

REXTBH2

REXTBL2

VMODEH

VMODEL

VPWMH

VPWML

IFBL

-

0.5

-

-

- 0.5

-

FB = 1.0V

MODE = 0V

-

EXT2 "Low" ON Resistance

PWM "High" Voltage

No Load

Ω

5

2

Ω

5

4

4

µA

2

µA

2

19

30

µA

-

- 0.50

0.50

µA

µA

V

-

MIN.

XC9210 Series

Synchronous Step-Down DC / DC Controller ICs

µA

2

-

0.20

4

--

MODE "Low" Voltage

0.65

PWM "Low" Voltage

No Load

-

No Load

0.65

MODE "High" Voltage

No Load

-

REXTBL1

Ω

REXTBH1

V

-

0.20

V

CE = 0V, EXT2 = VDD - 0.4V

-23

CE1 = 0, EXT1= VDD - 0.4V

-

FB = 0V, EXT1 = 0.4V

-

4

10.0

20.0

5

26

37

VOUT

× 0.95V, CE=0V→0.65V

5.0

TSS

%

EFFI

mS

96

-

IOUT1=300mA (note 3)

-

Efficiency1 (note 2 )

%

4

30

38

No Load, VPWM=0V

22

PFMDTY

PFM Duty Ratio

4

PWM=0V

-

µA

2

IPWML

µA

2

-

0.5

-

IPWMH

-

- 0.5

- 0.5

CE = 0V

-

ICEL

-

0.5

-

V

2

-

0.2

FB = 0V

-

VCEL

CE "Low" Voltage

V

2

--

FB = 0V

0.65

VCEH

CE "High" Voltage

kHz

2

300

345

Same as IDD1

255

FOSC

Oscillation Frequency

µA

2

-

3.0

Same as IDD1, CE = 0V

-

ISTB

Stand-by Current

µA

2

65

120

FB = 1.0V

-

IDD2

Supply Current 2

µA

2

FB = 0V

IDD1

120

-65

1

--

Supply Current 1

V

1

-

VIN

0.9

Output Voltage Range(note 1)

V

V

2.0

-

10.0

SYMBOL

PARAMETER

MODE = 0V

10.0

Maximum Input Voltage

VDD

VIN

1

MODE = 0V

Supply Voltage

CONDITIONS

UNITS

TEST

CIRCUIT

MAX.

TYP.

Semiconductor Ltd.