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dc1997a-af

DEMO MANUAL 

DC1997A-A/DC1997A-B

PARTS LIST–DC1997A-A

ITEM

QTY REFERENCE

PART DESCRIPTION

MANUFACTURER/PART NUMBER

Required Circuit Components

1

1

C12

CAP X7R 470pF 16V 5% 0603

AVX 0603YC471JAT2A

2

2

C21, C22

CAP X5R 10µF 16V,10% 0805

MURATA GRM21BR61C106KE15L

3

2

C3, C16

CAP NPO 1000pF 25V 5% 0603

AVX 06033A102JAT2A

4

3

C4, C10, C14

CAP X5R 0.1µF 16V 10% 0603

AVX 0603YD104KAT2A

5

2

C5, C11

CAP NPO 47pF 16V 5% 0603

AVX,0603YA470JAT2A

6

1

C6

CAP X7R 330pF 16V 0603

AVX 0603YC331JAT2A

7

2

C7, C13

CAP X5R 0.01µF 16V 10% 0603

AVX 0603YD103KAT2A

8

1

C8

CAP X5R 4.7µF 16V,10% 0805

AVX 0805YD475KAT2A

9

2

C9, C18

CAP X5R 1µF 16V,10% 0603

AVX 0603YD105KAT2A

10

4

CIN1, CIN2, CIN3, CIN4

CAP X5R 22µF 16V 1210

AVX 1210YD226MAT2A

11

1

CIN6

CAP 180µF 16V SVP-F8

SANYO 16SVP180MX

12

4

COUT1, COUT2, COUT6, COUT7

CAP X5R 100µF 6.3V 20% 1206

MURATA GRM31CR60J107ME39L

13

4

COUT4, COUT5, COUT9, COUT10

CAP 330µF 2.5V SIZE 7343

SANYO 2R5TPE330M9

14

2

D1, D2

DIODE SCHOTTKY SOD-323

CENTRAL SEMI. CMDSH-4E TR

15

2

L1, L2

IND 0.47µH 0.8mΩ DCR

WÜRTH 7443330047

16

2

Q1, Q2

MOSFET 5mm x 6mm POWER STAGE

INFINEON BSC0911ND

17

2

R13, R45

RES 100k 1% 0603

VISHAY CRCW0603100KFKEA

18

6

R2, R11, R19, R44, R4, R12

RES 10k 1% 0603

VISHAY CRCW060310K0FKEA

19

1

R27

RES CHIP 11k 1% 0603

VISHAY CRCW060311K0FKEA

20

2

R29, R31

RES 2.2Ω 1% 0603

VISHAY CRCW06032R20FKEA

21

1

R30

RES 133k 1% 0603

VISHAY CRCW0603133KFKEA

22

2

R32, R40

RES 15k 1% 0603

VISHAY CRCW060315K0FKEA

23

12

R5, R17, R21, R23, R25, R35, R38, R41, 

R42, R50, R14, R24

RES 0Ω,0603

VISHAY CRCW06030000Z0EA

24

4

R6, R7, R46, R48

RES 10Ω 1% 0603

VISHAY CRCW060310R0FKED

25

2

RS1, RS2

RES 0.001Ω 1W 1% 2512

VISHAY WSL25121L000FEA

26

1

U1

LTC3838EUHF-1 QFN 38-LEAD 

LINEAR TECH. LTC3838EUHF-1

Summary of Contents for DC1997A-A

Page 1: ...d trademarks of Linear Technology Corporation All other trademarks are the property of their respective owners The entire converter excluding the bulk input and output capacitors fits within a 1 5in2...

Page 2: ...to regulate to the fixed 1 2V reference generated by the LT 6650 reference circuit If desired this reference canbesetwithapotentiometer oranexternalsourcesuch asaDACoranothersource Seethefollowinginst...

Page 3: ...le To monitor the load step current connect the scope probe across the ISTEP turrets for that rail 3 Connect the output of the pulse generator to the PULSE turret for the rail under test and connect t...

Page 4: ...RENT A 0 EFFICIENCY 85 90 95 1 5V 1 2V 20 DC1997A F02 80 75 70 5 10 15 25 BOTH RAILS MOSFET INFINEON BSC0911ND DUAL L W RTH 7443330047 0 47 H DCR 0 8m 10 RSENSE 1m FCM VIN 12V fSW 300kHz LOAD CURRENT...

Page 5: ...d from Ground Figure 12 Turn On of the 1 2V Rail of the DC1997A B Assembly RUN Pin Released from Ground 1 2VO AC 50mV DIV LOAD STEP 5A DIV 20 s DIV 20A 10A COUT 2 SANYO 2R5TPE330M9 100 F X5R 1206 L W...

Page 6: ...F 16V SVP F8 SANYO 16SVP180MX 12 4 COUT1 COUT2 COUT6 COUT7 CAP X5R 100 F 6 3V 20 1206 MURATA GRM31CR60J107ME39L 13 4 COUT4 COUT5 COUT9 COUT10 CAP 330 F 2 5V SIZE 7343 SANYO 2R5TPE330M9 14 2 D1 D2 DIOD...

Page 7: ...0 0 Q3 Q10 MOSFET LFPAK OPT 11 0 R1 R3 R8 R9 R10 R15 R16 R18 R20 R22 R26 R28 R33 R34 R36 R37 R39 R43 R47 R49 R63 RES 0603 OPT 12 0 R51 R53 R54 R59 R60 R61 R62 RES 0603 OPT 13 0 R52 RES POT 3313J 1 OPT...

Page 8: ...T2A 12 1 CIN6 CAP 180 F 16V SVP F8 SANYO 16SVP180MX 13 4 COUT1 COUT2 COUT6 COUT7 CAP X5R 100 F 6 3V 20 1206 MURATA GRM31CR60J107ME39L 14 4 COUT4 COUT5 COUT9 COUT10 CAP 330 F 2 5V SIZE 7343 SANYO 2R5TP...

Page 9: ...1 0603 VISHAY CRCW060310K0FKEA 15 1 R52 RES POT 20k 1 POT 3313J 1 BOURN 3313J 1 203E 16 1 R53 RES 20k 0 1 0603 VISHAY PTN0603E2002BST1 17 1 R54 RES 10k 0 1 0603 VISHAY PTN0603E1002BSTS 18 2 R55 R56 R...

Page 10: ...10 dc1997a af DEMO MANUAL DC1997A A DC1997A B SCHEMATIC DIAGRAM...

Page 11: ...Technology Corporation is believed to be accurate and reliable However noresponsibilityisassumedforitsuse LinearTechnologyCorporationmakesnorepresenta tion that the interconnection of its circuits as...

Page 12: ...Y INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE EXCEPT TO THE EXTENT OF THIS INDEMNITY NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT SPECIAL INCIDENTAL...

Page 13: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Analog Devices Inc DC1997A B DC1997A A...

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