LTM8045 datasheet(41/54 Pages) AD

41 / 54 page

LTM4655

Rev. 0

For more information www.analog.com

APPLICATIONS INFORMATION

Table 12. Negative Output Voltage Response vs Component Matrix. Performance of Figure 48 Circuit with Values Here Indicated.

Load-Stepping from 50% of Full Scale (F.S.) to 100% of F.S. Load Current, in 1μs. Typical Measured Values.

COUTHn VENDORS

PART NUMBER

CINHn/CDn VENDORS

PART NUMBER

AVX

12066D107MAT2A (100µF, 6.3V, 1206 Case Size)

Murata

GRM32ER71K475M (4.7µF, 80V, 1210 Case Size)

Murata

GRM31CR60J107M (100µF, 6.3V, 1206 Case Size)

AVX

12065C475MAT2A (4.7µF, 50V, 1206 Case Size)

Taiyo Yuden

JMK316BBJ107MLHT (100µF, 6.3V, 1206 Case Size)

Murata

GRM31CR71H475M (4.7µF, 50V, 1206 Case Size)

TDK

C3216X5R0J107M (100µF, 6.3V, 1206 Case Size)

Taiyo Yuden

UMK316AB7475ML (4.7µF, 50V, 1206 Case Size)

AVX

1210YD476MAT2A (47µF, 16V, 1210 Case Size)

TDK

C3216X5R1H475M (4.7µF, 50V, 1206 Case Size)

Murata

GRM32ER61C476M (47µF, 16V, 1210 Case Size)

Taiyo Yuden

EMK325BJ476MM (47µF, 16V, 1210 Case Size)

AVX

12103D226MAT2A (22µF, 25V, 1210 Case Size)

Taiyo Yuden

TMK325BJ226MM (22µF, 25V, 1210 Case Size)

TDK

C3225X5R1E226M (22µF, 25V, 1210 Case Size)

AVX

12105D106MAT2A (10µF, 50V, 1210 Case Size)

Murata

GRM32ER61H106M (10µF, 50V, 1210 Case Size)

Taiyo Yuden

UMK325BJ106M (10µF, 50V, 1210 Case Size)

TDK

C3225X5R1H106M (10µF, 50V, 1210 Case Size)

VOUTn–

(V)

VINn

(V)

F. S.

LOAD

(A)

CINHn

(VINn–TOGND

BYPASS CAP)

CINOUTn

(VINn–TOVOUTn–

BYPASS CAP)

CDn

(VDn– TOVOUTn–

BYPASS CAP)

CDGND

(VDn– TOGND

BYPASS CAP)

COUTHn

(CERAMIC

OUTPUT CAP)

RISETn

(kΩ)

RPGDFBn

(kΩ)

fSWn

(kHz)

RfSETn

(kΩ)

REXTVCCn

(Ω)

LOAD STEP

TRANSIENT

DROOP

(mV)

LOAD STEP

PK-PK

DEVIATION

(mV)

RECOVERY

TIME

(μs)

–0.5

3.2

4.7µF

100µF × 4

N/A

400

N/A

2.2

150

–0.5

4.7µF

100µF × 4

N/A

400

N/A

2.2

190

–0.5* 24

4.7µF

100µF × 4

N/A

200**

N/A

2.2

190

–3.3

2.2

4.7µF

100µF

66.5

22.6

400

N/A

130

–3.3

3.5

4.7µF

100µF × 2

66.5

22.6

400

N/A

165

330

–3.3

4.7µF

100µF × 2

66.5

22.6

450

2200

175

355

–3.3

4.7µF

100µF × 2

66.5

22.6

500

1000

160

310

–5

1.75

4.7µF

47µF × 2

100

36.5

400

N/A

125

235

–5

3.2

4.7µF

47µF × 2

100

36.5

550

665

175

340

–5

24 3.85

4.7µF

47µF × 2

100

36.5

600

499

185

380

–8

1.2

4.7µF

47µF

160

61.9

450

2200

32.4

125

235

–8

2.3

4.7µF

47µF

160

61.9

700

332

32.4

185

340

–8

3.1

4.7µF

47µF

160

61.9

800

249

32.4

180

330

–12

0.9

4.7µF

22µF

240

95.3

475

1300

49.9

140

270

–12

1.9

4.7µF

22µF

240

95.3

825

237

49.9

157

290

–12

24 2.75

4.7µF

22µF

240

95.3

1100

143

49.9

170

325

–15

0.75

4.7µF

22µF

301

121

500

1000

60.4

170

–15

12 1.75

4.7µF

22µF

301

121

875

210

60.4

200

380

–15

2.5

4.7µF

22µF

301

121

1200

124

60.4

205

400

–24

0.55

4.7µF

4.7µF × 2

10µF × 2

481

196

550

665

100

105

220

–24

12 1.25

4.7µF

4.7µF × 2

10µF × 2

481

196

1000

165

100

140

275

*Internal loop compensation is used with Table 12 settings. COMP

na connects to COMPnb in Figure 48.

**To avoid violating minimum on-time criteria, drive CLKIN with a 200kHz, 50% duty cycle clock.

LTM8045 Datasheet(PDF) 41 Page - Analog Devices

LTM8045 Datasheet(HTML) 41 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54

Datasheet Download

Link URL