SI9172 Vishay, SI9172 Datasheet - Page 6

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

Si9172
Vishay Siliconix
www.vishay.com
6
220
200
180
160
140
120
100
220
180
140
100
80
60
60
2
2
V
3
3
IN
PSM Mode
Current vs. V
85_C
V
IN
r
DS(on)
Voltage (V)
25_C
V
IN
4
4
vs. V
(V)
–25_C
IN
IN
Voltage
5
5
BP Mode
_
New Product
6
6
100
3.6
2.9
2.2
1.5
95
90
85
80
0.4
0
V
V
ADJ
OUT
PSM Mode Efficiency vs. Load
FB Threshold vs. ADJ Voltage
= 1.1 V
40
= 2.2 V
1.1
80
LOAD (mA)
ADJ (V)
120
S-02890—Rev. A, 21–Dec-00
Document Number: 71379
1.8
V
V
IN
160
IN
= 3 V
= 4.2 V
200
2.5