LTM4615 datasheet(6/32 Pages) LINER

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LTM4639

4639f

For more information www.linear.com/LTM4639

TYPICAL PERFORMANCE CHARACTERISTICS

3.3V to 1.5V with 7.5A/µs Load

Step, CPWR = 5V

5V to 1.8V with 7.5A/µs Load

Step, CPWR = 5V

5V to 3.3V with 7.5A/µs Load

Step, CPWR = 5V

7V to 5V with 7.5A/µs Load Step,

CPWR = 5V

50µs/DIV

COMPA CONNECTED TO COMPB

CFF = 180pF, CBOT = 22pF, CCOMPA = 180pF

COUT = 100µF CER ×2, 680µF 2.5V 6m POSCAP ×2

VOUT

VP-P =

80mV

4639 G10

LOAD

STEP

0A TO

7.5A

50µs/DIV

COMPA CONNECTED TO COMPB

CFF = 180pF, CBOT = 22pF, CCOMPA = 180pF

COUT = 100µF CER ×2, 680µF 2.5V 6m POSCAP ×2

VOUT

VP-P = 80mV

4639 G11

LOAD

STEP

0A TO 7.5A

50µs/DIV

COMPA CONNECTED TO COMPB

CFF = NONE, CBOT = 22pF, CCOMPA = 180pF

COUT = 47µF CER ×1,

220µF 6.3V 15m POSCAP ×2

VOUT

VP-P =

250mV

4639 G12

LOAD

STEP

0A TO 7.5A

50µs/DIV

COMPA CONNECTED TO COMPB

CFF = NONE, CBOT = 22pF, CCOMPA = 180pF

COUT = 22µF CER ×1,

150µF 6.3V 15m POSCAP ×2

VOUT

VP-P =

400mV

4639 G13

LOAD

STEP

0A TO

7.5A

Turn-On No Load

Start-Up Pre-Biased Load

Recycling VIN (On-Off-On)

Output Short-Circuit

Output Ripple Noise

20ms/DIV

RUN

1V/DIV

VOUT

0.5V/DIV

VIN = 5V

VOUT = 1V

IOUT = 20A

4639 G14

20ms/DIV

RUN

2V/DIV

VOUT

0.5V/DIV

VIN = 5V

VOUT = 1V, VOUT = 0.5V BIAS

IOUT = 20A

4639 G15

1s/DIV

RUN

2V/DIV

VOUT

0.5V/DIV

VIN = 5V

VOUT = 1V

4639 G16

500µs/DIV

VOUT

0.5V/DIV

IIN

200mA/DIV

VIN = 5V

VOUT = 1V

4639 G17

1µs/DIV

VIN = 3.3V

VOUT = 1V

IOUT = 20A

4639 G18

VP-P = 8mV

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