Si9174

Vishay Siliconix

www.vishay.com

4

Document Number: 71668

S-41148—Rev. C, 14-jun-04

PIN CONFIGURATION

10

PGND

FB

SYNC

MSOP-10

AGND

1

2

3

9

8

DAC

MODE

Top View

56

SD

47

2

3

4

10

9

8

7

AGND

FB

PGND

SYNC

SD

Top View

5

DAC

6

MODE

MLP33

PIN DESCRIPTION

Pin Number

Name

Function

1

Inductor connection

2

AGND

Low power analog ground

3

FB

Output voltage feedback

4

Input supply voltage for the analog circuit.

5

DAC

Voltage from external DAC to adjust output voltage.

6

MODE

Used to select switching mode of the buck converter

PWM/PSM Pin Logic:

MODE Pin

Operating Mode

PWM

Open

PSM

GND

AUTO

7

SD

Logic low disables IC and reduces quiescent current to below 2 mA

8

SYNC

9

Input supply voltage

10

PGND

Low impedance power ground

ORDERING INFORMATION

MSOP-10

MLP33

Standard

Part Number

Marking

Temperature

Standard

Part Number

Lead (Pb)-Free

Part Number

Marking

Temperature

Si9174DH-T1

9174

−40 to 85_C

Si9174DM-T1

Si9174DM-T1—E3

9174

−40 to 85_C

Additional voltage options are available.

Eval Kit

Temperature Range

Board

Si9174DB

−40 to 85_C

Surface Mount