IRU1260CP International Rectifier, IRU1260CP Datasheet

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IRU1260CP

Manufacturer Part Number
IRU1260CP
Description
DUAL 6A AND 1A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
Manufacturer
International Rectifier
Datasheet
FEATURES
APPLICATIONS
TYPICAL APPLICATION
Notes: Pentium II
P55C
PACKAGE ORDER INFORMATION
Rev. 2.1
09/19/02
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
Providing a Single Package Solution for GTL+ and
High Speed Bus Termination
Dual Supply P55C
TM
is trademark of Intel Corp.
Figure 1 - Typical application of IRU1260 in the Pentium II
IRU1260
TM
is trademark of Intel Corp.
3.3V
U1
5V
providing for GTL+ termination while 2.5V supplies the clock chip.
Applications
0 To 150
T
J
(
°
V
V
V
C)
O U T
O U T
V
V
C T R L
Gnd
FB
FB
V
IN
1
2
2
1
C1
7
6
5
4
3
2
1
7-PIN PLASTIC
IRU1260CM
TO-263 (M)
POSITIVE ADJUSTABLE REGULATOR
www.irf.com
R5
C4
DUAL 6A AND 1A LOW DROPOUT
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
include low cost dual supply for processors such as Intel
P55C
and the I/O supplies from the 5V input.
C5
TM
Ultra Thin-Pak
where 2.8V and 3.3V are needed for the Core
7-PIN PLASTIC
IRU1260CP
R4
TM
R1
R2
R3
design with the 1.5V output
TM
TM
applications. Other applications
(P)
C2
C3
Data Sheet No. PD94138
2.5V / 1A
1.5V / 6A
IRU1260
1

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IRU1260CP Summary of contents

Page 1

... Core and the I/O supplies from the 5V input 7-PIN PLASTIC 7-PIN PLASTIC TO-263 (M) Ultra Thin-Pak IRU1260CM IRU1260CP www.irf.com Data Sheet No. PD94138 IRU1260 TM applications. Other applications 2. 1. design with the 1.5V output TM (P) 1 ...

Page 2

IRU1260 ABSOLUTE MAXIMUM RATINGS Input Voltage (V ) .................................................... 7V IN Power Dissipation ..................................................... Internally Limited Storage Temperature Range ...................................... -65°C To 150°C Operating Junction Temperature Range ..................... PACKAGE INFORMATION 7-PIN PLASTIC TO-263 ( OUT ...

Page 3

PIN DESCRIPTIONS PIN # PIN SYMBOL PIN DESCRIPTION 1 V The control input pin of the regulator. This pin via a 10V resistor is connected to the 5V CTRL supply to provide the base current for the pass transistor of ...

Page 4

IRU1260 APPLICATION INFORMATION Introduction The IRU1260 is a dual adjustable Low Dropout (LDO) regulator which can easily be programmed with the ad- dition of two external resistors to any voltages within the range of 1.20 to 5.5V. This voltage regulator ...

Page 5

Stability The IRU1260 requires the use of an output capacitor as part of the frequency compensation in order to make the regulator stable. Typical designs for the microprocessor applications use standard electrolytic capacitors with typical ESR in the range of ...

Page 6

IRU1260 Layout Consideration The IRU1260 like all other high speed linear regulators need to be properly laid out to insure stable operation. The most important component is the output capacitor, which needs to be placed close to the output pin ...

Page 7

TYPICAL APPLICATION PENTIUM APPLICATION 3.3V V OUT OUT IRU1260 Gnd CTRL 5V Figure 5 - Typical application of IRU1260 in the Pentium providing for GTL+ termination while 2.5V supplies the clock chip. ...

Page 8

IRU1260 TYPICAL APPLICATION RAMBUS APPLICATION IRU1260 Figure 6 - Typical application of IRU1260 in the Rambus providing for memory termination while 3.3V supplies ...

Page 9

TYPICAL APPLICATION INTEL 740 GRAPHICS CHIP APPLICATION 3. IRU1260 5V Figure 7 - Typical application of IRU1260 to provide 2.7V from the 3.3V bus for the Intel 740 graphics chip. Ref Desig Description U1 Dual LDO Regulator ...

Page 10

IRU1260 (M) TO-263 Package 7-Pin SYMBOL MIN MAX A 10.05 10.31 B 8.28 8.53 C 4.31 4.57 D 0.66 0.91 E 1.14 1.40 ...

Page 11

Rev. 2.1 09/19/02 TM (P) Ultra Thin-Pak 7-Pin SYMBOL MIN MAX A 9.27 9.52 A1 8.89 9.14 B 7.87 8.13 C 1.78 2.03 D ...

Page 12

IRU1260 PACKAGE SHIPMENT METHOD PKG PACKAGE DESIG DESCRIPTION M TO-263 TM P Ultra Thin-Pak 1 1 Feed Direction Figure A IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 12 PIN PARTS COUNT PER TUBE ...

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