LT8640 datasheet(7/26 Pages) AD

7 / 26 page

LT8642-1

Rev. 0

For more information www.analog.com

TYPICAL PERFORMANCE CHARACTERISTICS

RT Programmed Switching

Frequency

Minimum Input Voltage

Bias Pin Current vs VIN

Bias Pin Current vs Frequency

CLKOUT Waveforms

Switching Waveforms, Full

Frequency Continuous Operation

Switching Waveforms,

Burst Mode Operation

Case Temperature Rise

Switching Rising Edge

SWITCHING FREQUENCY (MHz)

0.2

150

200

250

1.8

86421 G25

100

125

175

225

0.6

1.4

2.2

2.6

TEMPERATURE (°C)

–50 –25

100 125

2.0

2.2

2.4

2.6

2.8

3.0

3.2

86421 G26

VBIAS = 5V

VOUT = 1.2V

fSW = 2MHz

FC MODE

INPUT VOLTAGE (V)

16.0

16.5

17.0

17.5

18.0

18.5

19.0

86421 G27

VBIAS = 5V

VOUT = 1.2V

VIN = 12V

FC MODE

SWITCHING FREQUENCY (MHz)

0.2

0.6

1.4

1.8

2.2

2.6

3.0

86421 G28

DEMO BOARD ON STILL AIR

VIN = 12V

VBIAS = 3.3V

VOUT = 1.2V

fSW = 1MHz

fSW = 2MHz

LOAD CURRENT (A)

9 10

86421 G29

VIN = 12V

ILOAD = 2A

2ns/DIV

VSW

2V/DIV

86421 G30

200ns/DIV

VCLKOUT

2V/DIV

VSW

5V/DIV

86421 G31

fSW = 2MHz

FC MODE

FRONT PAGE APPLICATION

12VIN TO 1.2VOUT AT 3A

500ns/DIV

1A/DIV

VSW

5V/DIV

86421 G32

FRONT PAGE APPLICATION

12VIN TO 1.2VOUT AT 100mA

VSYNC = 0V

5µs/DIV

2A/DIV

VSW

5V/DIV

86421 G33

LT8640 Datasheet(PDF) 7 Page - Analog Devices

LT8640 Datasheet(HTML) 7 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

Datasheet Download

Link URL