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International Rectifier Electronic Components Datasheet

IRU1075 Datasheet

7.5A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR

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FEATURES
1V Dropout at Full Load Current
Fast Transient Response
1% Voltage Reference Initial Accuracy
Output Current Limiting
Built-In Thermal Shutdown
APPLICATIONS
Low Voltage Processor Applications such as:
P54C,P55C, Cyrix M2,
POWER PC, AMD
GTL+ Termination
PENTIUM PRO, KLAMATH
Low Voltage Memory Termination Applications
Standard 3.3V Chip Set and Logic Applications
TYPICAL APPLICATION
Data Sheet No. PD94128
IRU1075
7.5A LOW DROPOUT POSITIVE
ADJUSTABLE REGULATOR
DESCRIPTION
The IRU1075 is a low dropout three-terminal adjustable
regulator with minimum of 7.5A output current capabil-
ity. This product is specifically designed to provide well
regulated supply for low voltage IC applications such as
PentiumP54C, P55Cas well as GTL+ termina-
tion for Pentium Proand Klamathprocessor appli-
cations. The IRU1075 is also well suited for other pro-
cessors such as Cyrix, AMD and Power PCappli-
cations. The IRU1075 is guaranteed to have <1.2V drop-
out at full load current making it ideal to provide well
regulated outputs such as 3.3V with input supply volt-
age as low as 4.5V minimum.
5V
C1
1500uF
Vin 3
1075app1-1.0
IRU1075 Vout 2
Adj 1
3.3V
R1
121
C2
R2 2x 1500uF
200
Typical application of IRU1075 in a 5V to 3.3V regulator
Notes: Pentium P54C, P55C, Klamath, Pentium Pro, VRE are trademarks of Intel Corp. Cyrix M2 is trademark of Cyrix Corp.
Power PC is trademark of IBM Corp.
PACKAGE ORDER INFORMATION
Tj (°C)
0 To 150
3-PIN PLASTIC
TO-220 (T)
IRU1075CT
3-PIN PLASTIC
TO-263 (M)
IRU1075CM
3-PIN PLASTIC
Ultra Thin-Pak (P)
IRU1075CP
Rev. 1.1
06/29/01
1


International Rectifier Electronic Components Datasheet

IRU1075 Datasheet

7.5A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR

No Preview Available !

IRU1075
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Vin) ....................................................
Power Dissipation .....................................................
Storage Temperature Range ......................................
Operating Junction Temperature Range .....................
7V
Internally Limited
-65°C To 150°C
0°C To 150°C
PACKAGE INFORMATION
3-PIN PLASTIC TO-220 (T)
FRONT VIEW
3
Tab is
Vout
2
Vin
Vout
1 Adj
3-PIN PLASTIC TO-263 (M)
FRONT VIEW
3 Vin
Tab is
Vout
2 Vout
1 Adj
θJT=2.7°C/W θJA=60°C/W
θJA=35°C/W for 1" Square pad
3-PIN PLASTIC ULTRA THIN-PAK (P)
FRONT VIEW
3
Vin
Tab is
Vout
2 Vout
1 Adj
θJA=35°C/W for 1" Square pad
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, these specifications apply over Cin=1µF, Cout=10µF, and Tj=0 to 150!C.
Typical values refer to Tj=25!C.
PARAMETER
Reference Voltage
Line Regulation
Load Regulation (Note 1)
Dropout Voltage
(Note 2)
Current Limit
Minimum Load Current
(Note 3)
Thermal Regulation
Ripple Rejection
Adjust Pin Current
Adjust Pin Current Change
Temperature Stability
Long Term Stability
RMS Output Noise
SYM
Vref
Vo
TEST CONDITION
MIN TYP
Io=10mA, Tj=25!C, (Vin-Vo)=1.5V 1.238 1.250
Io=10mA, (Vin-Vo)=1.5V
1.225 1.250
Io=10mA, 1.3V<(Vin-Vo)<7V
Vin=3.3V, Vadj=0, 10mA<Io<7.5A
0.4
Io=7.5A
1.0
Io=4A
0.92
Vin=3.3V, dVo=100mV
7.6 9
Vin=3.3V, Vadj=0V
5
MAX
1.262
1.275
0.2
1.2
1.1
10
UNITS
V
%
%
V
A
mA
30ms Pulse, Vin-Vo=3V, Io=7.5A
0.02
f=120Hz, Co=25µF Tantalum,
Io=7.5A, Vin-Vo=3V
60 70
Iadj Io=10mA, Vin-Vo=1.5V, Tj=25!C,
Io=10mA, Vin-Vo=1.5V
55 120
Io=10mA, Vin-Vo=1.5V, Tj=25!C
0.2 5
Vin=3.3V, Vadj=0V, Io=10mA
0.5
Tj=125!C, 1000Hrs
0.3
Tj=25!C, 10Hz<f<10KHz
0.003
%/W
dB
µA
µA
%
%
%V
Note 1: Low duty cycle pulse testing with Kelvin con-
nections is required in order to maintain accurate data.
Note 2: Dropout voltage is defined as the minimum dif-
ferential voltage between Vin and Vout required to main-
tain regulation at Vout. It is measured when the output
voltage drops 1% below its nominal value.
Note 3: Minimum load current is defined as the mini-
mum current required at the output in order for the out-
put voltage to maintain regulation. Typically the resistor
dividers are selected such that it automatically main-
tains this current.
2 Rev. 1.1
06/29/01


Part Number IRU1075
Description 7.5A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
Maker International Rectifier
Total Page 6 Pages
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