MP1540 – 1.3MHz, 18V STEP-UP CONVERTER

MP1540 Rev. 1.0

www.MonolithicPower.com

3

8/15/2005

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TM

TYPICAL PERFORMANCE CHARACTERISTICS

VIN = VEN = 5V, TA = +25°C unless specified otherwise.

1.6

1.5

1.4

1.3

1.2

1.1

1.0

TEMPERATURE (

°C)

MP1540_TPC02

Frequency vs

Temperature

750

700

650

600

550

500

TEMPERATURE (

°C)

MP1540_TPC04

Supply Current vs

Temperature

1.6

1.5

1.4

1.3

1.2

1.1

1.0

40

30

50

60

70

80

DUTY CYCLE (%)

MP1540_TPC06

Current Limit vs

Duty Cycle

85.0

84.6

84.2

83.8

83.4

83.0

82.6

-50

0

50

100

150

-50

0

50

100

150

TEMPERATURE (

°C)

MP1540_TPC03

Maximum Duty Cycle vs

Temperature

0.80

0.75

0.70

0.65

0.60

0.55

0.50

2345

6

INPUT VOLTAGE (V)

MP1540_TPC05

RDS (ON) vs

Input Voltage

-50

0

50

100

150

MP1540_TPC01

1.270

1.260

1.250

1.240

1.230

-50

0

50

100

150

TEMPERATURE (

°C)

Feedback Voltage vs

Temperature