SI9175_04 Datasheet, PDF (4/17 Pages) Vishay Siliconix – High Performance Step-Down DC-DC Converter With Adjustable Output Voltage

Si9175
Vishay Siliconix
PIN CONFIGURATION
L_X
1
AGND
2
FB
3
V_DD
4
REF
5
MSOP-10
Top View
10 PGND
9
V_IN
8
SYNC
7
SD
6
MODE
MLP33
L_X
AGND
2
FB
3
V_DD
4
REF
5
10
PGND
9
V_IN
8
SYNC
7
SD
6
MODE
Top View
PIN DESCRIPTION
Pin Number
Name
1
L_X
2
AGND
3
FB
4
V_DD
5
REF
6
MODE
7
SD
8
SYNC
9
V_IN
10
PGND
Function
Inductor connection
Low power analog ground
Output voltage feedback
Input supply voltage for the analog circuit.
Internal reference, no connection should be made to this pin.
Used to select switching mode of the buck converter
PWM/PSM Pin Logic:
MODE Pin
V_IN
Open
GND
Operating Mode
PWM
PSM
AUTO
Logic low disables IC and reduces quiescent current to below 2 mA
Converter switching frequency can be synchronized to ¹/₆ of the clock frequency at this pin.
Input supply voltage
Low impedance power ground
ORDERING INFORMATION
MSOP-10
Standard
Part Number Marking Temperature
Si9175DH-T1
9175
−40 to 85_C
Additional voltage options are available.
Standard
Part Number
Si9175DM-T1
MLP33
Lead (Pb)-Free
Part Number Marking
Si9175DM-T1—E3
9175
Temperature
−40 to 85_C
Eval Kit
Si9175DB
Temperature Range
−40 to 85_C
Board
Surface Mount
www.vishay.com
4
Document Number: 71728
S-41148—Rev. C, 14-Jun-04