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1638

Step-Up DC/DC Converter High Efficiency PFM

STANSON TECHNOLOGY 

Step-Up DC/DC Converter

ST1638

High Efficiency PFM

ELECTRICAL CHARACTERISTICS (Ta=25℃, Vcc=15V, unless otherwise specified.)

Symbol

△VOUT

IIN

VSTART

VHOLD

IIN

IS1

IS2

RON

Parameter

Output Voltage Accuracy

Input Voltage

Start Up Voltage

Hold On Voltage

Input Current at No Load

Supply Current

Supply Current

SW Switch-On Resistance

ILEAKAGE

Fosc

DOSC

SW Leakage Current

Max Oscillator Freq.

Oscillator Duty Cycle

Efficiency

Conditions

IOUT = 1 mA, VIN: 0→2V

IOUT = 1 mA, VIN: 2→0V

IOUT = 0 mA

VS = VOUT X 0.95

VS = VOUT + 0.5V

VS = VOUT X 0.95,

VSW = 0.4V

VSW = 6V

VS = VOUT X 0.95

VS = VOUT X 0.95

Min.

-2.5

0.7

20

1

80

65

Typ. Max. Unit

2.5 %

6V

0.8 0.9 V

V

15

μA

70 μA

9

μA

1.3 Ω

0.5 μA

120 160 KHz

75 85 %

85

%

STANSON TECHNOLOGY

120 Bentley Square, Mountain View, Ca 94040 USA

TEL: (650) 9389294 FAX: (650) 9389295

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