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XRP7664-65-74-75

2A/3A 18V Synchronous Step-Down Regulator, Constant frequency 

(XRP7664-65), Light-Load efficiency (XRP7674-75) 

 

 

 

© 2014 Exar Corporation 

5/8 

Rev. 2.0.0 

XRP7664 BILL OF MATERIAL 

 

 

 

XRP7665 BILL Of MATERIAL 

 

 

Reference

Qty.

Manufacturer

Part Number

Size

Component

PCB

1

Exar

XRP7664EVB

1.3"x2"

XRP7664 Evaluation kit

U1

1

Exar

XRP7664

SO-8

2A Buck regulator

L1

1

COOPER-Bussmann

DR74-100R

7.6x7.6mm

10uH shielded inductor

C1

1

Murata Corp.

GRM32DR61E106KA12L

1210

CER CAP 10uF, 25V, X5R

C3, C4

2

Murata Corp.

GRM31CR61A226ME19L

1206

CER CAP 22uF, 10V, X5R

CBS

1

Murata Corp.

GRM188R71H103KA01D

0603

CAR CEP 10000pF, X7R, 50V

CC

1

Murata Corp.

GRM188R71H332KA01D

0603

CAP CER 3300pF, X7R, 50V

CSS

1

Murata Corp.

GRM188R71H104KA57D

0603

CAP CER 0.1uF, X7R, 50V

R1

1

Panasonic

ERJ-3EKF2612V

0603

Resistor 26.1K Ohm, 1%

R2

1

Panasonic

ERJ-3EKF1002V

0603

Resistor 10K Ohm, 1%

RC

1

Panasonic

ERJ-3EKF5621V

0603

Resistor 5.62K Ohm, 1%

R4

1

Panasonic

ERJ-3EKF1003V

0603

Resistor 100K Ohm, 1%

J1

1

Wurth Elektronik

61304011121

Conn. Header 0.1" 3POS

J1(JUMPER)

1

Wurth Elektronik

609002115121

CONN JUMPER SHORT.

VIN, VOUT, GND, EN, SW

6

Vector Electronic

K24C/M

.042 Dia

Test Point Post

Reference

Qty.

Manufacturer

Part Number

Size

Component

PCB

1

Exar

XRP7665EVB

1.3"x2"

XRP7665 Evaluation kit

U1

1

Exar

XRP7665

PSO-8

3A Buck Regulator

L1

1

Wurth Elektronik

744314850

7x7x5mm

8.5uH shielded inductor

C1

1

Murata Corp.

GRM32ER61E226KE15L

1210

CER CAP 22uF, 25V, X5R

C3, C4

2

Murata Corp.

GRM31CR61A226KE19L

1206

CER CAP 22uF, 10V, X5R

CBS

1

Murata Corp.

GRM188R71H103KA01D

603

CAP CEP 10000pF, X7R, 50V

CC

1

Murata Corp.

GRM188R71H392KA01D

603

CAP CER 3900pF, X7R, 50V

CSS

1

Murata Corp.

GRM188R71H104KA57D

603

CAP CER 0.1uF, X7R, 50V

R1

1

Panasonic

ERJ-3EKF2612V

603

Resistor 26.1k Ohm, 1%

R2

1

Panasonic

ERJ-3EKF1002V

603

Resistor 10k Ohm, 1%

RC

1

Panasonic

ERJ-3EKF6821V

603

Resistor 6.81k Ohm, 1%

R4

1

Panasonic

ERJ-3EKF1003V

603

Resistor 100k Ohm, 1%

J1

1

Wurth Elektronik

61304011121

Conn. Header 0.1" 3POS

J1(JUMPER)

1

Wurth Elektronik

609002115121

CONN JUMPER SHORT.

VIN, VOUT, GND, EN, SW

6

Vector Electronic

K24C/M

.042 Dia

Test Point Post

Содержание XRP7664-65-74-75

Страница 1: ...required at EN pin in order to turn the regulator on and off STANDARD CONFIGURATION The XRP76XXEVB evaluation board is configured to operate under the following conditions and parameters Input voltage range 4 5V 18V Output voltage range 3 3V Output current load range 0 2A 3A EVALUATION BOARD MANUAL FEATURES 2A 3A Continuous Output Current 4 5V to 18V Wide Input Voltage PWM Current Mode Control Adj...

Страница 2: ...or divider connected to FB programs the output voltage If the feedback pin exceeds 1 1V the over voltage protection will trigger If the feedback voltage drops below 0 3V the oscillator frequency is lowered to short circuit protection COMP 6 Compensation pin This is the output of transconductance error amplifier and the input to the current comparator It is used to compensate the control loop Conne...

Страница 3: ...te the output at 3 3V upon turning on the input supply The XRP76XX should provide nominal efficiency equal to figure 4 of the datasheet JUMPER J1 FUNCTION Jumper J1 can be used to either connect EN to VIN or allow an independent logic level control signal to be applied to EN The board is supplied from EXAR with jumper set at left side position marked EN VIN This allows for automatic startup of the...

Страница 4: ...d efficiency XRP7674 75 2014 Exar Corporation 4 8 Rev 2 0 0 EVALUATION BOARD SCHEMATICS C4 22uF CSS 0 1uF CBS 10nF CC nF RC k CC1 DNP R4 100k J1 1 2 3 FB C2 DNP C3 22uF GND VIN VOUT GND EN 1 SW 1 U1 XRP76XX BS 1 IN 2 SW 3 GND 4 FB 5 COMP 6 EN 7 SS 8 L1 uH R1 26 1k R2 10k C1 uF EN EXT EN VIN SW SW FB ...

Страница 5: ...03 Resistor 100K Ohm 1 J1 1 Wurth Elektronik 61304011121 Conn Header 0 1 3POS J1 JUMPER 1 Wurth Elektronik 609002115121 CONN JUMPER SHORT VIN VOUT GND EN SW 6 Vector Electronic K24C M 042 Dia Test Point Post Reference Qty Manufacturer Part Number Size Component PCB 1 Exar XRP7665EVB 1 3 x2 XRP7665 Evaluation kit U1 1 Exar XRP7665 PSO 8 3A Buck Regulator L1 1 Wurth Elektronik 744314850 7x7x5mm 8 5u...

Страница 6: ... Resistor 100K Ohm 1 J1 1 Wurth Elektronik 61304011121 Conn Header 0 1 3POS J1 JUMPER 1 Wurth Elektronik 609002115121 CONN JUMPER SHORT VIN VOUT GND EN SW 6 Vector Electronic K24C M 042 Dia Test Point Post Reference Qty Manufacturer Part Number Size Component PCB 1 Exar XRP7675EVB 1 3 x2 XRP7675 Evaluation kit U1 1 Exar XRP7675EVB PSO 8 3A Buck Regulator Light Load efficient L1 1 Wurth Elektronik ...

Страница 7: ...3A 18V Synchronous Step Down Regulator Constant frequency XRP7664 65 Light Load efficiency XRP7674 75 2014 Exar Corporation 7 8 Rev 2 0 0 EVALUATION BOARD LAYOUT Fig 3 Component Placement Top Side Fig 4 Layout Bottom Side ...

Страница 8: ...s publication in order to improve design performance or reliability EXAR Corporation assumes no responsibility for the use of any circuits described herein conveys no license under any patent or other right and makes no representation that the circuits are free of patent infringement Charts and schedules contained here in are only for illustration purposes and may vary depending upon a user s spec...

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