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Rev.1.0 Nov.21 2011

AX6618



APPLICATION CIRCUIT

1. Using an Output Capacitor with ESR≧20mΩ

C1

1uF

R1

2K

VOUT=1.0V/3A

VIN=1.5V

R3

1K

VCNTL=5V

C4

220uF

C5

0.1u

U1

AX6618ES

6

2

4

1

3

8

7

5

VCNTL

FB

VOUT

GND

EN

POK

VIN

C2

100uF

C3

0.1uF

C6

12~48nF

R2

2K

OFF

ON

VOUT

2. Using an MLCC as the Output Capacitor

SOP-8L-EP

VIN=1.5V

R3

10K

VOUT=1.0V/3A

VFB = 0.5V

U2

AX6618ES

6

2

4

1

3

8

7

5

VCNTL

FB

VOUT

GND

EN

POK

VIN

C6

220pF

C5

10uF

C1

1uF

C3

10uF

VOUT=VFB*(1+R1/R2)

VCNTL=5V

R2

200K

R1

200K

OFF

ON

VOUT

R1 = 150K~220K

TDFN-10L

VIN=1.5V

R3

10K

VOUT=1.0V/3A

VFB = 0.5V

U2

AX6618J10

3

7

9

6

8

5

4

1

VCNTL

FB

VOUT

GND

EN

POK

VIN

C6

220pF

C5

10uF

C1

1uF

C3

10uF

VOUT=VFB*(1+R1/R2)

VCNTL=5V

R2

200K

R1

200K

OFF

ON

VOUT

2

VIN

R1=150K~220K