IR3473MTR1PBF View Datasheet(PDF) - International Rectifier

Part Name

Description

Manufacturer

IR3473MTR1PBF

6A Highly Integrated SupIRBuck™

International Rectifier 

6A Highly Integrated SupIRBuckTM

IR3473

TYPICAL APPLICATION

VCC

R2

10K

TP4

EN

SW1

EN / FCCM

+3.3V

R1

10K

EN

FCCM

VSW

R4

15.8K

ISET

TP11

PGOOD

+3.3V

R5

10K

TP13

SS

PGOOD

FB

SS

C20

0.1uF

TP14

+3.3V

+3.3V

TP26

AGND

TP16

VCC

TP17

PGND

VCC

C23

open

R3

200K

C4

0.22uF

U1

IR3473

1

FCCM

2

ISET

3

PGOOD

12

4

GND1

IR3473 PHASE

5

FB

6

SS

7

NC1

VIN

C1

1uF

VSW

L1

2.2uH

R6

open

C13

open

R13

open

C2

+ C3

22uF

68uF

TP1

VINS

TP2

VIN

TP6

PGNDS

TP5

PGND

VOUT

C6

open

C7

open

C8

open

C9

150uF

C10

47uF

C11

open

C12

0.1uF

TP23

VOUTS

TP7

VOUT

TP10

PGND

C24

open

C15

open

C16

open

C17

open

C18

open

C19

open

C26

open

C27

open

TP24

PGNDS

C21

1uF

R12

4.99

C25

1uF

C14

open

TP27

A

TP25

B

R11

20

TP28

VID

R10

open

1

C22

open

R9

open

Q1

open

R7

2.80K

R8

2.55K

TP18

VOLTAGE SENSE

Figure 4: Demoboard Schematic for VOUT = 1.05V, FS = 300kHz

DEMOBOARD BILL OF MATERIALS

QTY

REFERENCE DESIGNATOR

VALUE

DESCRIPTION

MANUFACTURER

PART NUMBER

3

C1, C21, C25

1.00uF

capacitor, X7R, 1.00uF, 25V, 0.1, 0603

Murata

GRM188R71E105KA12D

1

C10

47uF

capacitor, 47uF, 6.3V, 805

TDK

C2012X5R0J476M

2

C12, C20

0.100uF

capacitor, X7R, 0.100uF, 25V, 0.1, 603

TDK

C1608X7R1E104K

1

C2

22.0uF

capacitor, X5R, 22.0uF, 16V, 20%, 1206

Taiyo Yuden

EMK316BJ226ML‐T

1

C3

68uF

capacitor, electrolytic, 68uF, 25V, 0.2, SMD

Panasonic

EEV‐FK1E680P

1

C4

0.22uF

capacitor, X5R, 0.22uF, 10V, 0.1, 0603

TDK

C1608X5R1A224K

1

C9

150uF

capacitor, tantalum polymer, 150uF, 6.3V, 20%,

7343

Sanyo

6TPC150M

1

L1

2.2uH

inductor, ferrite, 2.2uH, 8.0A, 11.2mOhm, SMT

Cyntec

PCMB065T‐2R2MS

1

R4

15.8K

resistor, thick film, 15.8K, 1/10W, 0.01, 603

KOA

RK73H1JLTD1582F

3

R1, R2, R5

10.0K

resistor, thick film, 10.0K, 1/10W, 0.01, 0603

KOA

RK73H1J1002F

1

R11

20

resistor, thick film, 20, 1/10W, 0.01, 603

KOA

RK73H1JLTD20R0F

1

R12

4.99

resistor, thick film, 4.99, 1/8W, 0.01, 603

KOA

RK73H1J4R99F

1

R3

200K

resistor, thick film, 200K, 1/10W, 0.01, 603

KOA

RK73H1JLTD2003F

1

R7

2.80K

resistor, thick film, 2.80K, 1/10W, 0.01, 603

KOA

RK73H1JLTD2801F

1

R8

2.55K

resistor, thick film, 2.55K, 1/10W, 0.01, 0603

KOA

RK73H1J2551F

1

SW1

SPST

switch, DIP, SPST, 2 position, SMT

C&K Components

SD02H0SK

1

U1

IR3473

4mm X 5mm QFN

IRF

IR3473MTRPBF

4 March 27, 2013 | V2.2 | PD97601

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