LTC3788IUHTRPBF datasheet(8/32 Pages) LINER

Part #	LTC3788IUHTRPBF

Description	2-Phase, Dual Output Synchronous Boost Controller

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LTC3788

8

3788fa

SENSE Pin Input Current

vs Temperature

Oscillator Frequency

vs Temperature

Maximum Current Sense

Threshold vs ITH Voltage

SENSE Pin Input Current

vs VSENSE Voltage

SENSE Pin Input Current

vs ITH Voltage

Oscillator Frequency

vs Input Voltage

TYPICAL PERFORMANCE CHARACTERISTICS

TEMPERATURE (°C)

–45

300

350

600

450

5

55

80

500

550

400

–20

30

105

130

3788 G19

FREQ = GND

FREQ = INTVCC

15

510

20

25

30

35

40

INPUT VOLTAGE (V)

344

354

356

358

360

350

342

352

340

348

346

3788 G20

FREQ = GND

ITH VOLTAGE (V)

0

80

120

100

0.6

1.0

3788 G21

40

0

0.2

0.4

0.8

1.2

1.4

–40

60

20

–20

–60

ILIM = GND

ILIM = FLOAT

ILIM = INTVCC

Burst Mode

OPERATION

PULSE SKIPPING MODE

FORCED CONTINUOUS MODE

TEMPERATURE (°C)

–45

5

55

80

0

80

40

160

200

240

120

20

100

60

180

220

260

140

–20

30

105

130

3788 G22

SENSE+ PIN

SENSE – PIN

VSENSE = 12V

ILIM = FLOAT

ITH VOLTAGE (V)

0

1

2

2.5

0

80

40

160

200

240

120

20

100

60

180

220

260

140

0.5

1.5

3

3788 G23

SENSE+ PIN

SENSE – PIN

VSENSE = 12V

ILIM = INTVCC

ILIM = FLOAT

ILIM = GND

ILIM = INTVCC

ILIM = FLOAT

ILIM = GND

VSENSE COMMON MODE VOLTAGE (V)

2.5

17.5

27.5

32.5

0

80

40

160

200

240

120

20

100

60

180

220

260

140

7.5

12.5

22.5

37.5

3788 G24

SENSE+ PIN

SENSE – PIN

ILIM = INTVCC

ILIM = FLOAT

ILIM = GND

ILIM = INTVCC

ILIM = FLOAT

ILIM = GND

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