LTC3788EGN-1 查看數據表（PDF） - Linear Technology

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LTC3788EGN-1

2-Phase, Dual Output Synchronous Boost Controller

Linear Technology 

TYPICAL PERFORMANCE CHARACTERISTICS

LTC3788-1

Quiescent Current vs Temperature

170

VIN = 12V

160

VFB = 1.25V

RUN2 = GND

150

140

130

120

110

100

–45 –20

5 30 55 80

TEMPERATURE (°C)

105 130

37881 G13

Shutdown (RUN) Threshold

vs Temperature

1.40

1.35

1.30

RUN RISING

1.25

1.20

RUN FALLING

1.15

1.10

–45 –20

5 30 55 80

TEMPERATURE (°C)

105 130

37881 G14

Undervoltage Lockout Threshold

vs Temperature

4.4

4.3

4.2

INTVCC RISING

4.1

4.0

3.9

3.8

INTVCC FALLING

3.7

3.6

3.5

3.4

–45 –20

5 30 55 80 105 130

TEMPERATURE (°C)

37881 G15

INTVCC Line Regulation

5.5

5.4

5.3

5.2

5.1

5.0

4.9

4.8

4.7

4.6

4.5

0

5 10 15 20 25 30

INPUT VOLTAGE (V)

35 40

37881 G16

EXTVCC Switchover and INTVCC

Voltages vs Temperature

6.0

5.8

5.6

INTVCC

5.4

5.2

5.0

4.8

EXTVCC RISING

4.6

EXTVCC FALLING

4.4

4.2

4.0

–45 –20

5 30 55 80

TEMPERATURE (°C)

105 130

37881 G17

INTVCC vs INTVCC Load Current

5.50

VIN = 12V

5.45

5.40

EXTVCC = 0V

5.35

5.30

5.25

5.20

EXTVCC = 6V

5.15

5.10

5.05

5.00

0

20 40 60 80 100 120 140 160 180 200

INTVCC LOAD CURRENT (mA)

37881 G18

Oscillator Frequency

vs Temperature

600

FREQ = INTVCC

550

500

450

400

FREQ = GND

350

300

–45 –20

5 30 55 80

TEMPERATURE (°C)

105 130

37881 G19

37881f

7

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