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IRU1015CD-IRU1015CDTR-IRU1015CMTR-IRU1015CT
1.5A Adj LDO Linear Regulator in a TO-252 (D-PAK) 2-Leads package
International
TOR Rectifier
FEATU RES
Output Current Limiting
APPLICATIONS
486DX4 Supply Voltage
P55 l/C) Supply Voltage
Built-ln Thermal Shutdown
VGA & Sound Card Applications
Low Voltage High Speed Termination Applications
Standard 3.3V Chip Set and Logic Applications
Guaranteed < 1.3V Dropout at Full Load Current
Fast Transient Response
1% Voltage Reference Initial Accuracy
Data Sheet No. PD94122
IRU1015
1.5A LOW DROPOUT POSITIVE
ADJUSTABLE REGULATOR
DESCRIPTION
The IRU1015 is a low dropout three-terminal adjustable
regulator with minimum of 1.5A output current capabil-
ity. This product is speaTcally designed to provide well
regulated supply for low voltage IC applications such as
486DX4 processor, P550TM l/O supply as well as high
speed bus termination and low current 3.3V logic sup-
ply. The IRU1015 is also well suited for other applica-
tions such as VGA and sound card. The |RU1015 is
guaranteed to have <1.3V dropout at full load current
making it ideal to provide well regulated outputs of 2.5V
to 3.3V with 4.75V to 7V input supply.
TYPICAL APPLICATION
1500uF
IRU1015 Vow
E - - 3.3V/ 1 .5A
1 R2 1500uF
Figure 1 - Typical application of IRU1015 in a 5V to 3.3V regulator.
Note: P550 is trademark of Intel Corp.
PACKAGE ORDER INFORMATION
To (°C) 2-PIN PLASTIC 3-PIN PLASTIC 3-PIN PLASTIC
TO-252 (D-Pak) T0-263 (M) TO-220 (T)
0 To 150 IRU1015CD |RU1015CM lRU1015CT
Rev. 1.3
08/20/02
1
IRU1015
International
TOR Rectifier
ABSOLUTE MAXIMUM RATINGS
Input Voltage (V m) ....................................................
Power Dissipation _....................................................
Storage Temperature Range ......................................
Internally Limited
-65°C To 150°C
Operating Junction Temperature Range ..................... 0°C To 150°C
PACKAGE INFORMATION
2-PIN PLASTIC TO-252 (D-Pak)
3-PIN PLASTIC TO-263 (M)
3-PIN PLASTIC TO-220 (T)
Tab is
9JA=70°CIW for 0.5" Square pad
\/OUT VOUT
9JA=35°CNV for 1" Square pad
6JT=2.7°C/W 6JA=60°C/\N
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, these specifications apply over CIN=1}LF, COUT=10|LF, and To=0 to 150°C.
Typical values refer to TJ=25°C.
PARAMETER SYM TEST CONDITION MIN TYP MAX UNITS
Reference Voltage VREF lo=10mA, To=25''C, (VIN-VO)=1.5V 1.238 1.250 1.262 V
lo=10mA, (ViN-Vo)=1.5V 1.225 1.250 1.275
Line Regulation lo=10mA, 1.3V<(VlN-VO)<7V 0.2 %
Load Regulation (Note 1) V|N=3.3V, VADJ=0, 10mA
Dropout Voltage (Note 2) AVo Note 2, lo=1.5A 1.1 1.3 V
Current Limit V|N=3.3V, AVo=100mV 1.6 A
Minimum Load Current (Note 3) Vm=3.3V, VADJ=0V 5 10 mA
Thermal Regulation 30ms Pulse, VIN-V0=3V, |o=1.5A 0.01 0.02 %/W
Ripple Rejection f=120Hz, Co=25wF Tantalum,
|o=0.75A, VlN-V0=3V 60 70 dB
Adjust Pin Current IADJ lo=10mA, ViN-Vo=1.5V, TJ=25°C,
lo=10mA, VlN-V0=1.5V 55 120 wA
Adjust Pin Current Change lo=10mA, 1hN-Vo=1.5V, TJ=25°C 0.2 5 wA
Temperature Stability V|N=3.3V, VADJ=0V, Io=10mA 0.5 %
Long Term Stability TJ=125°C, 1000Hrs 0.3 1 %
RMS Output Noise TJ=25°C, 10HzNote 1: Low duty cycle pulse testing with Kelvin con-
nections is required in order to maintain accurate data.
Note 2: Dropout voltage is dehned as the minimum dif-
ferential voltage between VIN and VOUT required to main-
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
tains this current.
tain regulation at VOUT. It is measured when the output
voltage drops 1% below its nominal value.
dividers are selected such that it automatically main-
Rev. 1.3
08/20/02
