XC9103 查看數據表（PDF） - TOREX SEMICONDUCTOR

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XC9103

Ceramic Cap. Compatible Step-Up DC/DC Converters

TOREX SEMICONDUCTOR 

XC9103/04/05 Series

Ceramic Cap. Compatible Step-Up DC/DC Converters

" ELECTRICAL CHARACTERISTICS (Continued)

XC9103B093MR, XC9104B093MR, XC9105B093MR

XC9103D093MR, XC9104D093MR, XC9105D093MR

(FOSC=300 (kHz)

PARAMETER

SYMBOL

CONDITIONS

MIN.

Output Voltage

Output Voltage Range

VOUT

VIN=VOUTSET× 0.6, VDD=3.3V

VOUTSET

IOUT=10mA, Using 2SD1628

3.234

1.5

FB Control Voltage

VFB

0.882

*1 Power Supply Voltage Range VDD

1.8

Operation Start Voltage

VST1 Recommended Circuit using 2SD1628,

-

IOUT=1.0mA

*1

Oscillation Start Voltage

VST2 No external connections

-

CE connected to VDD, Voltage applied, FB=0V

Operation Holding Voltage

VHLD Recommended Circuit using 2SD1628,

-

IOUT=1.0mA

Supply Current 1

IDD1 Same as VST2, VDD=3.300V

Supply Current 2

IDD2 Same as IDD1, FB=1.2V

Stand-by Current

ISTB Same as IDD1, CE=0V

Oscillation Frequency

FOSC Same as IDD1

255

Maximum Duty Ratio

MAXDTY Same as IDD1

75

PWM Duty Ratio

PFMDTY No Load (XC9104B/D, 9105B/D)

24

*3

Step input to FB ( Pulse width:2.0µS or more)

Overcurrent SENSE Voltage VLMT EXT = Low level voltage

220

(XC9103B, 9104B, 9105B)

Efficiency

EFFI Recommended Circuit using XP161A1355

-

Soft-start Time

TSS

5.0

CE "High" Voltage

VCEH Same as IDD1

0.65

CE "Low" Voltage

VCEL Same as IDD1

-

*2

PWM "High" Voltage

VPWMH IOUT=1.0mA

(XC9105B/D) VDD - 0.2

*2

PWM "Low" Voltage

VPWML IOUT=1.0mA

(XC9105B/D)

-

EXT "High" ON Resistance REXTH Same as IDD1, VEXT=VOUT-0.4V

-

EXT "Low" ON Resistance REXTL Same as IDD1, VEXT=0.4V

-

CE "High" Current

ICEH Same as IDD2, CE=VDD

-

CE "Low" Current

ICEL Same as IDD2, CE=0V

-

FB "High" Current

IFBH Same as IDD2, FB=VDD

-

FB "Low" Current

IFBL Same as IDD2, FB=0V

-

Test Conditions: Unless otherwise stated, CL: ceramic, recommended MOS FET should be connected.

VOUT=3.30 (V), VIN=2.00 (V), IOUT=170 (mA)

TYP.

3.300

-

0.900

-

-

-

-

62

16

300

81

32

300

85

10.0

-

-

-

-

24

16

-

-

-

-

MAX.

3.366

30.0

0.918

10

0.9

Ta=25OC

UNITS CIRCUIT

V

1

V

2

V

4

V

-

V

3

0.8

V

4

0.7

V

3

88

µA

4

22

µA

4

1.0

µA

5

345

kHz

4

87

%

4

40

%

1

380

mV

6

-

%

1

20.0

mS

1

V

5

0.20

V

5

-

V

1

VDD - 1.0 V

1

36

Ω

4

24

Ω

4

0.1

µA

5

-0.1

µA

5

0.1

µA

5

-0.1

µA

5

" NOTES

*1 Although the IC starts step-up operations from a VDD of 0.8V, the output voltage and oscillation frequency are stabilized at

VDD ≥ 1.8V. Therefore, a VDD of more than 1.8V is recommended when VDD is supplied from VIN or other power sources.

*2 With the XC9105 series, the CE pin also serves as a PWM/PFM switching pin. In operation, PWM control is selected when the voltage at the CE pin is

more than VDD -0.2V. On the other hand, PWM/PFM automatic switching control at a duty = 25% is selected when the voltage at the CE pin is less than

VDD -1.0V and more than VCEH.

*3 The overcurrent limit circuit of this IC is designed to monitor the ripple voltage so please select your external components carefully to prevent VLMT

being reached under low temperature conditions as well as normal operating conditions. Following current limiter circuit operations, which in turn causes

the IC's operations to stop, the operations of the IC can be returned to normal with a toggle of the CE pin or by turning the power supply back on.

Semiconductor Ltd.

5

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