Data Sheet No. PD94138
IRU1260
DUAL 6A AND 1A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR DESCRIPTION
The IRU1260 uses a ...
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 IITM applications. Other applications include low cost dual supply for processors such as Intel P55CTM 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™ Applications
TYPICAL APPLICATION
3.3V
C1 R1 C2 VOUT1 VIN
2.5V / 1A
7 6 5 4 3 2
R5 C4
R2
U1
VOUT2 Gnd VFB2 VFB1 VCTRL
1.5V / 6A
R3 C3 R4
IRU1260
1
C5
5V
Figure 1 - Typical application of IRU1260 in the Pentium IITM design with the 1.5V output providing for GTL+ termination while 2.5V supplies the clock chip. Notes: Pentium IITM is trademark of Intel Corp. P55CTM is trademark of Intel Corp.
PACKAGE ORDER INFORMATION
TJ (°C) 0 To 150 7-PIN PLASTIC TO-263 (M) IRU1260CM 7-PIN PLASTIC Ultra Thin-PakTM (P) I...