LTC3773 查看數據表（PDF） - Linear Technology

零件编号

产品描述 (功能)

比赛名单

LTC3773

Triple Output Synchronous 3-Phase DC/DC Controller with Up/Down Tracking

Linear Technology 

LTC3773

TYPICAL PERFORMANCE CHARACTERISTICS

IVDR and IVCC vs Switching Frequency

120 VIN = 10V, VCC = VDR = 5V,

FORCED CONTINUOUS MODE

2.6

IVDR

100 VOUT1 = 2.5V WITH 5A LOAD

VOUT2 = 1.8V WITH 5A LOAD

80 VOUT3 = 1.2V WITH 5A LOAD

2.5

IVCC

2.4

60

2.3

40

2.2

20

2.1

0

2.0

150 250 350 450 550 650 750

SWITCHING FREQUENCY (kHz)

3773 G07

Forced Continuous Mode

0A to 10A Load Step

1.8V VOUT

50mV/DIV

AC COUPLED

50μs/DIV

VIN = 12V, fSW = 220kHz

IL

5A/DIV

ILOAD

10A/DIV

3773 G09

IVCC and IVDR vs Load Current

100

DISCONTINUOUS

MODE

FORCED CONTINUOUS

10

Burst Mode

OPERATION

1

0.001

PLLFLTR = 0V

PLLFLTR = 5V

PLLFLTR = FLOATS

0.01 0.1

1

10 100

CHANNEL 1 LOAD CURRENT (A)

VIN = 12V, VCC = VDR = 5V, VOUT1 = 2.5V

VOUT2 = 1.8V (NO LOAD), VOUT3 = 1.2V (NO LOAD)

3773 G08

Discontinuous Mode 0A to 5A

Load Step at 5kHz Interval

1.8V VOUT

50mV/DIV

AC COUPLED

50μs/DIV

VIN = 12V, fSW = 220kHz

IL

5A/DIV

VSW

10V/DIV

ILOAD

5A/DIV

3773 G10

Burst Mode Operation 0A to 5A

Load Step at 5kHz Interval

1.8V VOUT

50mV/DIV

AC COUPLED

6

50μs/DIV

VIN = 12V, fSW = 220kHz

IL

5A/DIV

VSW

10V/DIV

ILOAD

5A/DIV

3773 G11

3773fb

Share Link: