LM5642MTC datasheet(8/40 Pages) TI

Part #	LM5642MTC

Description	LM5642/LM5642X High Voltage, Dual Synchronous Buck Converter with Oscillator Synchronization

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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8 / 40 page

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IC1

LM5642

10

+

25

C1

C34

R28

C11

R27

R23

C27

C26

C19

C2

R1

Q1

Q2

L1

R10

R11

C3

R2

R7

C4

R6

C6

C7

D3A

VDD

C9

1 PF

100

nF

220 k:

22 nF

4.7:

1 PF

4.7 PF

11.5 k:

Si4470DY x 2

Si4850EY

10 PF

50V

2.8Arms

VIN

10 m:

10 nF

100 pF

16.9 k:

100:

100 pF

100:

100 nF

BAS40-06

2.7 PH

4.5 m:

1000 PF

16V

22 m:

2.26

k:

4.99 k:

+

C13

R13

Q4

Q5

L2

C14

R14

R15

R16

C16

D3B

VDD

C23

Si4470DY x 2

Si4850EY

10 PF

50V

2.8Arms

VIN

10 m:

10 nF

100 pF

16.9 k:

100:

100 pF

100:

100 nF

BAS40-06

2.7 PH

4.5 m:

1000 PF

16V

22 m:

C16

C25

S1

VDD

SYNC

Vo = 1.8V, 20A

Q6

Q3

27 nF

C10

1 PF

C24

1 PF

Vin = 30V

r10%

SGND

COMP1

ON/SS1

COMP2

VDD1

VIN

VLIN5

SYNC

VDD2

UV_DELAY

ON/SS2

FB1

ILIM1

RSNS1

KS1

CBOOT1

HDRV1

SW1

LDRV1

PGND

ILIM2

RSNS2

KS2

SW2

HDRV2

CBOOT2

LDRV2

FB2

LM5642, LM5642X

SNVS219K – JUNE 2003 – REVISED APRIL 2013

www.ti.com

Figure 4. Typical Single Channel Application Circuit

8

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Product Folder Links: LM5642 LM5642X

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