RT9907

3

DS9907-11 May 2014

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Copyright 2014 Richtek Technology Corporation. All rights reserved.

is a registered trademark of Richtek Technology Corporation.

Figure 2. Typical Application Circuit for 2-AA Battery Supply

2-AA Battery 1.8V to 3.2V

VDD3

ENM

FB3

EN1

LX3

COMP1

SS

EN3

EN2

COMP2

COMP3

LX2

VDD2

FB1

VDD1

LX1

FB2

20k

10k

4.7nF

1nF

1nF

4.7

H

2.5V/300mA

2

3

24

1

22

5

64

16

15

20

19

21

17

18

14

10

9

12

13

8

RT9907

11

470k

470k

100pF

220k

10

F x 4

I/O 3.3V/500mA

30k

1nF

100pF

200k

220k

4.7H

1.5V/300mA

3.3V

10

F x 4

10

F x 4

10

F x 2

10

F x 2

SS0520

150k

Chip Enable

10

F x 2

4.7

H

1

F

7, 23,

Exposed Pad (25)