MIC2568

Micrel

MIC2568

2

May 2003

Ordering Information

Operating

Part Number

Temperature Range

Package

Pb-Free

MIC2568-0BSM

–40

°C to +85°C

28-pin SSOP

MIC2568-1BSM

–40

°C to +85°C

28-pin SSOP

MIC2568-0YSM

–40

°C to +85°C

28-pin SSOP

X

MIC2568-1YSM

–40

°C to +85°C

28-pin SSOP

X

MIC2568-0BTS

–40

°C to +85°C

28-pin TSSOP

MIC2568-1BTS

–40

°C to +85°C

28-pin TSSOP

Pin Description

Pin Number

Pin Number

Pin Name

Pin Function

MIC2568-0

MIC2568-1

1, 3 / 15, 17

1, 3 / 15, 17

A / B V

5V Nominal Supply Input: Optional supply, switchable to V

outputs.

2,26,28/12,14,16 2,26,28/12,14,16

A / B V

V

and 28 must be externally connected. Pins 12, 14, and 16 must be externally

connected.

4, 18

4, 18

GND

Ground.

5 / 19

5 / 19

A / B V

V

6 / 20

6 / 20

A / B V

V

7 / 21

A / B EN0

Enable 0: Micrel standard logic-control signal. MIC2568-0 only.

7 / 21

A / B V

V

MIC2568-1 only.

8 / 22

A / B EN1

Enable 1: Micrel standard logic-control signal. MIC2568-0 only.

8 / 22

A / B V

Program: Cirrus Logic-compatible control signal. MIC2568-1 only.

24 / 10

24 / 10

A / B V

V

9, 11, 23, 25

9, 11, 23, 25

NC

Not internally connected.

27 / 13

27 / 13

A / B V

3.3V Nominal Supply Input: Mandatory supply, switchable to V

outputs. Also powers MIC2568 internal circuitry.

Pin Configuration

2

3

4

GND

5

6

7

A EN0

1

8

A EN1

9

NC

28

27

26

NC

25

24

NC

23

10

22

21

20

19

B EN0

B EN1

11

18

12

17

13

16

14

15

* Denotes pinout differences. Duplicate pins must be connected together for proper operation.

NC

GND

2

3

4

GND

5

6

7

1

8

9

NC

28

27

26

NC

25

24

NC

23

10

22

21

20

19

11

18

12

17

13

16

14

15

NC

GND

MIC2568-0

MIC2568-1

*

*

*

*

*

*

*

*