Data Sheet No. PD94139
IRU1261
DUAL 6A AND 1A LOW DROPOUT
POSITIVE FIXED 1.5V AND 2.5V REGULATOR
DESCRIPTION
The IRU1261, using a proprietary process, combines a
dual low dropout regulator with fixed outputs of 1.5V and
2.5V in a single package with the 1.5V output having a
minimum of 6A and the 2.5V having a 1A output current
capability. This product is specifically designed to pro-
vide well regulated supplies from 3.3V to generate 1.5V
for GTL+ termination resistor supply and 2.5V clock
supply for the new generation of the Pentium
II
TM
pro-
cessor applications.
FEATURES
Guaranteed to Provide 1.5V and 2.5V Supplies
with 3.1V Input
Fast Transient Response
1% Voltage Reference Initial Accuracy
Built-In Thermal Shutdown
APPLICATIONS
Pentium
II
TM
Processor Applications
TYPICAL APPLICATION
3.3V
C1
V
OUT
1
V
IN
5
4
3
2
1
C4
C2
C3
2.5V / 1A
IRU1261
Gnd
V
OUT
2
1.5V / 6A
V
CTRL
5V
R1
Figure 1 - Typical application of IRU1261 in a Pentium
II
TM
processor application.
Note:
Pentium
II
TM
is trademark of Intel Corp.
PACKAGE ORDER INFORMATION
T
J
(擄C)
0 To 150
5-PIN PLASTIC
TO-263 (M)
IRU1261CM
5-PIN PLASTIC
Ultra Thin-Pak
TM
(P)
IRU1261CP
Rev. 2.0
09/19/02
www.irf.com
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