LTM4613 datasheet(7/34 Pages) LINER

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LTM4651

4651f

For more information www.linear.com/LTM4651

TYPICAL PERFORMANCE CHARACTERISTICS

Start-Up, Pre-Bias

Short Circuit, No Load

Short Circuit, 1.25A Load

–24V Transient Response, 12VIN

Start-Up, No Load

Start-Up, 1.25A Load

–5V Transient Response, 24VIN

TA = 25°C, unless otherwise noted.

FIGURE 32 CIRCUIT, 24VIN,

CINOUT = CIN = CDGND = CD = 4.7F,

COUT = 47F ×2, RfSET = 665k,

RISET = 100k, RPGDFB = 36.5k,

REXTVCC = 20, 1.8A TO 3.8A LOAD STEP AT 2A/s

40s/DIV

VOUT–

100mV/DIV

AC-COUPLED

IOUT

1A/DIV

4651 G07

FIGURE 32 CIRCUIT,

0.625A TO 1.25A LOAD STEP AT 0.625A/s

20s/DIV

VOUT–

100mV/DIV

AC-COUPLED

IOUT

0.4A/DIV

4651 G08

FIGURE 32 CIRCUIT, APPLICATION OF 12VIN,

START-UP INTO NO LOAD

1ms/DIV

VIN

5V/DIV

RUN

2V/DIV

PGOOD

5V/DIV

VOUT–

10V/DIV

4651 G09

FIGURE 32 CIRCUIT, APPLICATION OF 12VIN,

START-UP INTO 19.2Ω LOAD

1ms/DIV

VIN

5V/DIV

IOUT

500mA/DIV

PGOOD

5V/DIV

VOUT–

10V/DIV

4651 G10

FIGURE 32 CIRCUIT, VOUT– PRE-BIASED

TO –5V THROUGH A 1N4148 DIODE PRIOR

TO RUN TOGGLING HIGH

1ms/DIV

VOUT–

10V/DIV

RUN

2V/DIV

PGOOD

2V/DIV

IDIODE

100mA/DIV

4651 G11

FIGURE 32 CIRCUIT,

NO LOAD PRIOR TO APPLICATION OF

VOUT– SHORT-CIRCUIT

10s/DIV

VOUT–

10V/DIV

IIN

10A/DIV

4651 G12

FIGURE 32 CIRCUIT,

19.2 LOAD PRIOR TO APPLICATION OF

VOUT– SHORT-CIRCUIT

10s/DIV

VOUT–

10V/DIV

IIN

10A/DIV

4651 G13

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