ir3831 International Rectifier Corp., ir3831 Datasheet - Page 8

• Manufacturer Part Number: ir3831
• Description: Synchronous Buck Regulator For Ddr Applications
• Manufacturer: International Rectifier Corp.

TYPICAL OPERATING CHARACTERISTICS (-40
02/20/09
240.0
220.0
200.0
180.0
701.0
700.5
700.0
699.5
699.0
698.5
698.0
697.5
697.0
696.5
696.0
510.0
508.0
506.0
504.0
502.0
500.0
498.0
496.0
494.0
492.0
490.0
4.36
4.34
4.32
4.30
4.28
4.26
4.24
4.22
4.20
1.240
1.235
1.230
1.225
1.220
1.215
1.210
1.205
1.200
-40
-40
-40
-40
-40
-20
-20
-20
-20
-20
0
0
0
0
0
Enab le (UV LO) Star t
V cc(UV LO) Star t
20
Icc(Stan db y)
20
20
20
FREQUENCY
20
V fb
T e m p [o C]
T e m p [oC]
T e m p[o C]
Te m p[o C]
Te m p [oC]
40
40
40
40
40
60
60
60
60
60
80
80
80
80
80
100
100
100
100
100
120
120
120
120
120
50.6
50.4
50.2
50.0
49.8
49.6
49.4
49.2
49.0
48.8
48.6
14.0
13.0
12.0
11.0
10.0
24.0
23.5
23.0
22.5
22.0
21.5
21.0
4.00
3.99
3.98
3.97
3.96
3.95
3.94
1.030
1.025
1.020
1.015
1.010
1.005
1.000
- 40
-40
-40
-40
-40
- 20
-20
-20
-20
-20
o
0
0
0
0
C - 125
0
En able (UV L O) Stop
IOCSET (500k Hz )
V cc(UV L O) Stop
20
20
20
20
20
Icc(Dyn)
IR3831MPbF
ISS
Te m p [oC]
Te m p[oC]
Te m p [oC]
T e m p [ o C ]
T e m p[o C]
40
40
40
40
40
o
C) F
60
60
60
60
60
80
80
80
80
80
s
=500 kHz
100
100
100
100
100
120
120
120
120
120
8