Data Sheet No. PD94138
IRU1260
DUAL 6A AND 1A LOW DROPOUT
POSITIVE ADJUSTABLE REGULATOR
DESCRIPTION
The IRU1260 uses a proprietary process and combines
a dual low dropout adjustable output regulator in a single
package with one output having a minimum of 6A and
the other one having a 1A output current capability. This
product is specifically designed to provide well regulated
supplies for low voltage ICs such as 3.3V to 1.5V and
2.5V supplies for the GTL+ termination and the new
clock for Pentium
II
TM
applications. Other applications
include low cost dual supply for processors such as Intel
P55C
TM
where 2.8V and 3.3V are needed for the Core
and the I/O supplies from the 5V input.
FEATURES
Guaranteed <1.3V Dropout at 6A (Output #2)
Guaranteed <0.6V Dropout at 1A (Output #1)
Fast Transient Response
1% Voltage Reference Initial Accuracy
Built-In Thermal Shutdown
APPLICATIONS
Providing a Single Package Solution for GTL+ and
High Speed Bus Termination
Dual Supply P55C鈩?Applications
TYPICAL APPLICATION
3.3V
C1
R1
C2
V
OUT
1
V
IN
2.5V / 1A
7
6
5
4
3
2
R5
C4
R2
U1
V
OUT
2
Gnd
V
FB
2
V
FB
1
V
CTRL
1.5V / 6A
R3
C3
R4
IRU1260
1
C5
5V
Figure 1 - Typical application of IRU1260 in the Pentium
II
TM
design with the 1.5V output
providing for GTL+ termination while 2.5V supplies the clock chip.
Notes:
Pentium
II
TM
is trademark of Intel Corp.
P55C
TM
is trademark of Intel Corp.
PACKAGE ORDER INFORMATION
T
J
(
擄
C)
0 To 150
7-PIN PLASTIC
TO-263 (M)
IRU1260CM
7-PIN PLASTIC
Ultra Thin-Pak
TM
(P)
IRU1260CP
Rev. 2.1
09/19/02
www.irf.com
1