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4602fa

LTM4602

Start-Up, No Load, IOUT = 0A

Start-Up, IOUT = 6A

(Resistive Load)

Short-Circuit Protection,

IOUT = 0A

Short-Circuit Protection,

IOUT = 6A

VIN to VOUT Step-Down Ratio

(See Figure 21 for all curves)

VIN (V)

5.5

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

515

4602 G14

3.3V

2.5V

1.8V

1.5V

1.2V

fADJ = OPEN

SEE FREQUENCY ADJUSTMENT DISCUSSION

FOR 12VIN TO 5VOUT AND 5VIN TO 3.3VOUT

CONVERSION

0.6V

VIN = 12V

VOUT = 1.5V

COUT = 1 × 22μF, 6.3V X5R

330μF, 4V SANYO POSCAP

NO EXTERNAL SOFT-START CAPACITOR

200μs/DIV

4602 G10

VOUT

0.5V/DIV

IIN

0.5A/DIV

VIN = 12V

VOUT = 1.5V

COUT = 1 × 22μF, 6.3V X5R

330μF, 4V SANYO POSCAP

NO EXTERNAL SOFT-START CAPACITOR

500μs/DIV

4602 G11

VOUT

0.5V/DIV

IIN

0.5A/DIV

VIN = 12V

VOUT = 1.5V

COUT = 1 × 22μF, 6.3V X5R

330μF, 4V SANYO POSCAP

NO EXTERNAL SOFT-START CAPACITOR

20μs/DIV

4602 G12

VOUT

0.5V/DIV

IIN

0.5A/DIV

VIN = 12V

VOUT = 1.5V

COUT = 1 × 22μF, 6.3V X5R

330μF, 4V SANYO POSCAP

NO EXTERNAL SOFT-START CAPACITOR

20μs/DIV

4602 G13

VOUT

0.5V/DIV

IIN

0.5A/DIV

TYPICAL PERFORMANCE CHARACTERISTICS

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