LTM4612 查看數據表（PDF） - Linear Technology

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LTM4612

Ultralow Noise 36VIN, 15VOUT, 5A, DC/DC µModule

Linear Technology 

LTM4612

TYPICAL PERFORMANCE CHARACTERISTICS

Start-Up with 24VIN to 12VOUT at

IOUT = 5A, TA = –55°C

Short-Circuit with 24VIN to 12VOUT

at IOUT = 0A

Short-Circuit with 24VIN to 12VOUT

at IOUT = 5A

VOUT

5V/DIV

IIN

0.2A/DIV

VOUT

5V/DIV

IIN

2A/DIV

VOUT

5V/DIV

IIN

1A/DIV

500μs/DIV

4612 G10

SOFT-START CAPACITOR: 3.9nF

CIN = 3 s 10μF CERAMIC CAPACITORS AND

1 s 47μF OSCON CAPACITOR

50μs/DIV

4612 G11

COUT = 2 s 22μF CERAMIC CAPACITORS AND

2 s 47μF CERAMIC CAPACITORS

20μs/DIV

4612 G12

COUT = 2 s 22μF CERAMIC CAPACITORS AND

2 s 47μF CERAMIC CAPACITORS

VIN to VOUT Step-Down Ratio

36

SEE FREQUENCY ADJUSTMENT SECTION

FOR OPERATIONS OUTSIDE THIS REGION

30

24

OPERATING REGION

WITH DEFAULT FREQUENCY

18

12

Input Ripple

50mV/DIV

Output Ripple

10mV/DIV

6

0

3.3 4

6

8 10 12 14 15

VOUT (V)

4612 G13

1μs/DIV

4612 G14

VIN = 24V

VOUT = 12V AT 5A RESISTIVE LOAD

CIN = 3 s 10μF 50V CERAMIC 1 s 100μF BULK

1μs/DIV

VIN = 24V

VOUT = 12V AT 5A RESISTIVE LOAD

COUT = 2 s 22μF 16V CERAMIC AND

2 s 47μF 16V CERAMIC

4612 G15

4612f

6

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