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PIN NUMBER

MSOP-10*

USP-10B*

(XC9128)

USP-10B*

(XC9129)

SOP-8 **

PIN NAME

FUNCTION

1

1

1

1

Power Ground

2

2

2

2

Lx

Output of Internal Power Switch

3

3

3

3

BAT

Battery Input

4

4

4

4

EN

Chip Enable

5

5

-

-

FO

Flag Output

6

6

-

-

AEN/

Adaptor Enable

7

7

7

5

Analog Ground

8

8

8

6

FB

Output Voltage Monitor

9

9

9

7

MODE

Mode Switch

10

10

10

8

Output Voltage

-

-

5, 6

-

NC

No Connection

■

PIN CONFIGURATION

■

PIN ASSIGNMENT

* For MSOP-10 and USP-10B packages, please short the GND pins (pins 1 and 7).

*The dissipation pad for the USP-10B package should be solder-plated following the recommended mount pattern and metal masking

so as to enhance mounting strength and heat release. If the pad needs to be connected to other pins, it should be connected to the

Ground pins (pins 1 and 7).

** For SOP-8 package, please short the GND pins (pins 1 and 5).

Lx 2

BAT 3

EN 4

FO 5

9 MODE

8 FB

6 AEN/

FO 5

EN 4

BAT 3

Lx 2

6 AEN/

8 FB

9 MODE

Lx 2

BAT 3

EN 4

6 FB

7 MODE

MSOP-10

(TOP VIEW)

USP-10B

(BOTTOM VIEW)

XC9128 Series

SOP-8

(TOP VIEW)

Under Development

NC 5

EN 4

BAT 3

Lx 2

6 NC

8 FB

9 MODE

USP-10B

(BOTTOM VIEW)

XC9129 Series