SI9172 Vishay, SI9172 Datasheet - Page 3

• Manufacturer Part Number: SI9172
• Description: Psm Buck Converter With Dynamic Adjustable Output And Bypass Capability
• Manufacturer: Vishay

Document Number: 71379
S-02890—Rev. A, 21–Dec-00
Pin No.
9, 10
1, 2
ENABLE
BP/PSM
3
4
5
6
7
8
ADJ
V
V
IN
IN
ENABLE
BP/PSM
Name
1
2
3
4
5
GND
REF
ADJ
V
F
L
IN
B
X
MSOP-10
Input voltage source for buck converter, MOSFET driver, and IC control circuits
Logic high enables the converter. Logic low shuts down the IC and decreases current consumed to <1 mA.
Logic high = Bypass mode, logic low = PSM mode.
Analog voltage input to control output voltage
1.215-V reference. Decouple with 0.1-mF capacitor.
Direct output voltage sense feedback
IC ground
Inductor connection node
Top View
V
10
9
8
7
6
OUT
V
IN
L
L
GND
F
REF
X
X
B
FIGURE 1.
New Product
t
DELAY
90%
t
SS
Part Number
Si9172BH-TI
Eval Kit
Si9172DB
Function
Temperature Range
Temperature Range
t
t
DELAY
SS
= Soft-Start Time
.
–25_C to 85_C
–25_C to 85_C
= Start-Up Delay Time
_
_
Vishay Siliconix
Board Type
Surface Mount
Tape and Reel
Package
www.vishay.com
Si9172
3