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DC2851A User Guide 

 

LT7200S 

Quad 18V, ±5A 

Synchronous Monolithic 

Step-Down Regulator   

 

www.analog.com 

 

Analog Devices | 8 

 

Bill of Materials 

 

 

ITEM 

QTY 

REFERENCE 

PART DESCRIPTION 

MANUFACTURER/PART NUMBER 

Required Evaluation Kit Components 

C2,C5,C10,C14 

CAP.,10uF, X5R,25V,10%,0805 

MURATA, 
GRM21BR61E106KA73L 

C3,C6,C11,C15 

CAP.,1uF, X5R,25V,10%,0402 

MURATA, GRM155R61E105KA12D 

C12 

CAP.,4.7uF, 
X5R,6.3V,20%,0402 

Taiyo Yuden, JMK105BBJ475MVHF 

C16 

CAP.,1uF, X5R,25V,10%,0603 

AVX, 06033D105KAT2A 

C19,C20,C21,C22,C23,
C24,C25,C26,C56 

CAP.,47uF, X5R,10V,20%,1206 

TDK, C3216X5R1A476M160AB 

C34,C37,C40,C43 

CAP.,470pF, X7R,50V,10%, 
0603 

MURATA, GRM188R71H471KA01D 

C35,C38,C41,C44 

CAP.,4.7pF,C0G/NP0,50V,0603  MURATA, GRM1885C1H4R7CA01D 

C36,C39,C42,C45 

CAP.,1uF, X5R,10V,10%,0603 

TAIYO YUDEN, LMK107BJ105KA-T 

C46,C47,C48,C49,C66,
C67,C68,C69 

CAP.,4.7uF, 
X5R,10V,10%,0402 

TDK, C1005X5R1A475K050BC 

10 

C50,C51,C52,C53 

CAP.,100pF, C0G,50V,5%,0603  TDK, CGA3E2C0G1H101J080AA 

11 

C58 

CAP.,100uF, ALUM 
ELECT,25V,20%, CE-BS Series 

SUN ELECTRONIC INDUSTRIES 
CORP, 25CE100BS 

12 

L1,L2 

IND.,0.6uH, XEL5030 

COILCRAFT, XEL5030-601MEB 

13 

L3,L4 

IND.,1.5uH, XEL5030 

COILCRAFT, XEL5030-152MEB 

14 

Q1 

XSTR., MOSFET, N-
CH,40V,14A, DPAK (TO-252) 

VISHAY, SUD50N04-8M8P-4GE3 

15 

R1,R9,R13,R14,R17,R
18,R23,R24 

RES.,0 OHM,1/10W,0603,AEC-
Q200 

VISHAY, CRCW06030000Z0EA 

16 

R3,R4,R5,R6,R50 

RES.,100k 
OHMS,1%,1/10W,0603 

VISHAY, CRCW0603100KFKEA 

17 

R7 

RES.,2.2 
OHMS,5%,1/10W,0603 

VISHAY, CRCW06032R20JNEA 

18 

R8,R10,R15,R16 

RES.,1M OHM,1%,1/10W,0603 

VISHAY, CRCW06031M00FKEA 

19 

R19,R22,R25,R28,R41 

RES.,10k 
OHMS,1%,1/10W,0603 

VISHAY, CRCW060310K0FKEA 

20 

R29,R30,R31 

RES.,0 OHM,1/4W,1206 

VISHAY, CRCW12060000Z0EA 

21 

R40 

RES.,20k 
OHMS,1%,1/10W,0603 

VISHAY, CRCW060320K0FKEA 

22 

R42 

RES.,15k 
OHMS,1%,1/10W,0603 

VISHAY, CRCW060315K0FKEA 

Содержание DC2851A

Страница 1: ...he low quiescent current shutdown mode with its own TRACK or RUN pin A user selectable MODE SYNC pin on the evaluation kit allows the part to operate in either discontinuous mode for higher efficiency...

Страница 2: ...IOUT 0A to 5A per Channel 1 15 1 2 1 25 V VOUT2 Default Output Voltage VIN 12V IOUT 0A to 5A per Channel 1 73 1 8 1 87 V VOUT3 Default Output Voltage VIN 12V IOUT 0A to 5A per Channel 3 17 3 3 3 43 V...

Страница 3: ...or output voltage ripple take care to avoid a long ground lead on the oscilloscope probe Measure the output voltage ripple by touching the probe tip directly across the output capacitor See Figure 2...

Страница 4: ...DC2851A User Guide LT7200S Quad 18V 5A Synchronous Monolithic Step Down Regulator www analog com Analog Devices 4 Figure 1 Proper Measurement Equipment Setup...

Страница 5: ...ithic Step Down Regulator www analog com Analog Devices 5 Figure 2 Scope Probe Placement for Measuring Input or Output Voltage Ripple Typical Performance Characteristics Figure 3 DC2851A Efficiency vs...

Страница 6: ...DC2851A User Guide LT7200S Quad 18V 5A Synchronous Monolithic Step Down Regulator www analog com Analog Devices 6...

Страница 7: ...s Monolithic Step Down Regulator www analog com Analog Devices 7 Figure 4 DC2851A EMI Performance in CISPR25 Conducted and Radiated Emission Tests VEMI 14V VOUT1 1 2V VOUT2 1 8V VOUT3 3 3V VOUT4 5V IO...

Страница 8: ...J105KA T 9 8 C46 C47 C48 C49 C66 C67 C68 C69 CAP 4 7uF X5R 10V 10 0402 TDK C1005X5R1A475K050BC 10 4 C50 C51 C52 C53 CAP 100pF C0G 50V 5 0603 TDK CGA3E2C0G1H101J080AA 11 1 C58 CAP 100uF ALUM ELECT 25V...

Страница 9: ...s 1 1 FB1 IND 100 OHMS 100MHz FERRITE BEAD 25 8A 6mOHMS 1812 WURTH ELEKTRONIK 74279226101 2 1 C59 CAP 1uF X5R 25V 10 0402 MURATA GRM155R61E105KA12D 3 4 C60 C61 C64 C65 CAP 0 22uF X5R 25V 10 0402 MURAT...

Страница 10: ...JACK FEMALE THT NON INSULATED SWAGE 0 218 KEYSTONE 575 4 4 5 JP1 JP2 JP3 JP4 JP6 CONN HDR MALE 1x3 2m0000m VER T ST THT WURTH ELEKTRONIK 62000311121 5 1 JP5 CONN HDR MALE 2x3 2mm VERT ST THT WURTH ELE...

Страница 11: ...DC2851A User Guide LT7200S Quad 18V 5A Synchronous Monolithic Step Down Regulator www analog com Analog Devices 11 Schematic Diagram...

Страница 12: ...DC2851A User Guide LT7200S Quad 18V 5A Synchronous Monolithic Step Down Regulator www analog com Analog Devices 12 Schematic Diagram continued...

Страница 13: ...nd reliable However no responsibility is assumed by Analog Devices for its use nor for any infringements of patents or other rights of third parties that may result from its use Specifications subject...

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