2

Rev.1.2

■Standard circuit

VIN1

4

3

2

FB1

SW1

EN1

GND1

R1

1MΩ

Vin1/Vin2

2.5V to6V

Cin1=

22µF

L1=

4.7µH

ELM604PA

FB2

SW2

GND2

ON/OFF

C2

C1

R5

VIN2

EN2

1

10

8

9

7

6

5

L2=

4.7µH

R6

ON/OFF

Vout1

1.8V

Vout2

1.2V

R3

300kΩ

R2

499kΩ

R4

300kΩ

Cout2

10µF

Cout1

10µF

Cin2=

22µF

* Passive components not specified values in the above figure are optional.

TDFN10-3x3(TOP VIEW)

■Pin configuration

Pin No.

Pin name

Pin description

1

EN1

Channel 1 enable control input

2

FB1

Channel 1 voltage feedback

3

VIN2

Channel 2 supply input

4

GND2

Channel 2 ground pin

5

SW2

Channel 2 power switch output

6

EN2

Channel 2 enable control input

7

FB2

Channel 2 voltage feedback

8

VIN1

Channel 1 supply input

9

GND1

Channel 1 ground pin

10

SW1

Channel 1 power switch output

7 -

2

3

4

5

6

1

7

8

9

10

9

8

7

6

5

10

4

3

2

1

TDFN10-3x3(BOTTOM VIEW)

2

3

4

5

6

1

7

8

9

10

9

8

7

6

5

10

4

3

2

1