LTC3776EUF View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LTC3776EUF

Dual 2-Phase, No RSENSE™, Synchronous Controller for DDR/QDR Memory Termination

Linear Technology 

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LTC3776

TYPICAL APPLICATIO S

VIN

3.3V

CIN

22µF

RFB1A

59k

RFB1B

187k

CITH1A

100pF

CITH1

RITH1

22k

1000pF

RVIN 10Ω

CITH2

CVIN 2.2nF

1µF

RITH2

6.2k

CSS

10nF

CITH2A

330pF

22

SW1

SENSE1+ 21

23

24

1

2

3

4

IPRG1

PGND

VFB1

BG1

ITH1 SYNC/SSEN

IPRG2

TG1

PLLLPF PGND

SGND

TG2

20

19

18

17

16

15

5 LTC3776EUF 14

VIN

RUN/SS

13

9

7

8

6

PGOOD

VFB2

ITH2

VREF

BG2

PGND

SENSE2+

SW2

12

11

10

PGND

25

MP1

FDC638P

MP2

FDC638P

L1

2.2µH

MN1

FDC637N

MN2

FDC637N

L2

2.2µH

VDDQ

2.5V

2A

COUT1

47µF

COUT2

47µF

VTT

1.25V

±2A

L1, L2: VISHAY IHLP-2525CZ-01

3776 F15

Figure 15. 2-Phase, 750kHz, DDR Memory Supplies with Ceramic Output Capacitors

3776f

24

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