LTC3770EUH-PBF 查看數據表（PDF） - Linear Technology

零件编号

产品描述 (功能)

生产厂家

LTC3770EUH-PBF

Fast No RSENSE™ Step-Down Synchronous Controller with Margining, Tracking and PLL

Linear Technology 

LTC3770

TYPICAL PERFORMANCE CHARACTERISTICS

Track Up

Track Down

FIGURE 12 CIRCUIT

TRACK/SS

AND VFB

500mV/DIV

VOUT

2V/DIV

TRACK/SS

VFB

VOUT

FIGURE 12 CIRCUIT

TRACK/SS

AND VFB

500mV/DIV

TRACK/SS

VFB

VOUT

2V/DIV

VOUT

250ms/DIV

3770 G13

250ms/DIV

Transient Response

FIGURE 12 CIRCUIT

VOUT

100mV/DIV

3770 G14

IL

5A/DIV

STEP

0A TO 10A

20μs/DIV

3770 G15

Efficiency vs Load Current

100 FIGURE 12 CIRCUIT

95

90

DISCONTINUOUS

MODE

85

80

75

CONTINUOUS

MODE

70

65

60

55

50

0.01

0.1

1

10

LOAD CURRENT (A)

3770 G16

ITH Voltage vs Load Current

2.5 FIGURE 12 CIRCUIT

2.0

1.5

CONTINUOUS

MODE

1.0

0.5 DISCONTINUOUS

MODE

0

0

2

4

6

8

LOAD CURRENT (A)

10 12

3770 G17

Frequency vs Input Voltage

480

460

IOUT = 10A

440

420

400

380

IOUT = 0A

360

340

320 FCB = 0V

FIGURE 12 CIRCUIT

300

0

5 10 15 20

INPUT VOLTAGE (V)

25 30

3770 G18

6

Efficiency vs Input Voltage

100

FCB = 5V

FIGURE 12 CIRCUIT

95

90

ILOAD = 10A

85

ILOAD = 1A

80

75

70

0

5 10 15 20 25 30

INPUT VOLTAGE (V)

3770 G19

Frequency vs Load Current

500

FIGURE 12 CIRCUIT

450

400

350

300

CONTINUOUS

MODE

250

200

150

DISCONTINUOUS

MODE

100

50

0

0

2

4

6

8 10 12

LOAD CURRENT (A)

3770 G20

3770fc

Share Link: