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IRU1117-3.3CS-IRU1117-33CDTR-IRU1117-33CS-IRU1117-33CYTR
0.8A Fixed LDO Linear Regulator in a TO-252 (D-PAK) 2-Leads package
Data Sheet No. PD94172
International
TOR Rectifier
800mA LOW DROPOUT POSITIVE
FIXED 3.3V REGULATOR
FEATURES DESCRIPTION
El Guaranteed < 1.2V Dropout at 800mA Load The IRU1117-33 is a low dropout three-terminal flxed out-
Current put regulator with minimum of 800mA output current ca-
EI Fast Transient Response pability. This product is specifically designed to provide
El 1% Output Voltage Initial Accuracy well regulated supply for low voltage IC applications such
El Built-ln Thermal Shutdown as VGA, sound & DVD cards. The IRU1117-33 is guar-
Cl Available in SOT-223, D-Pak, Ultra Thin-PakTM anteed to have <1.2V dropout at full load current making
and 8-Pin SOIC Surface-Mount Packages it ideal to provide well regulated with 4.75V to 7V input
supply. The IRU1117-33 is specifically designed to be
APPLICATIONS stable with low cost aluminum capacitors while main-
Cl Standard 3.3V Chip Set and Logic Applications
I YPICAL APPLICATION
"c,Ir-
lar , ,
W1 El"-
IRU1117-33
Vour Z I 3.3V / 800mA
Gnd 1 l
Figure 1 - Typical application of IRU1117-33 in a 5V to 3.3V regulator.
PACKAGE ORDER INFORMATION
To (°C) 2-PIN PLASTIC 2-PIN PLASTIC 8-PIN PLASTIC 3-PIN PLASTIC
TO-252 (D-Pak) Ultra Thin-PakTM (P) SOIC (S) SOT-223 (Y)
0 To 150 lRU1117-33CD IRU1117-33CP lRU1117-33CS lRU1117-33CY
Rev. 1.5 1
02/04/03
IRU1117-33
International
TOR Rectifier
ABSOLUTE MAXIMUM RATINGS
Input Voltage (V IN) ....................................................
Power Dissipation _....................................................
Storage Temperature Range ......................................
Operating Junction Temperature Range ..................... 0°C To 150°C
Internally Limited
-65°C To 150°C
PACKAGE INFORMATION
2-PIN PLASTIC TO-252 (D-Pak)
2-PIN ULTRA THIN-PAKTM (P)
8-PIN PLASTIC SOIC (S)
3-PIN PLASTIC SOT-223 (Y)
Tab is
0JA=70°CIW for 0.5" Sq pad
3 :l VIN
Tab is
VOUT l
1 Cl Gnd
9JA=70°CNV for 0.5" Sq pad
va ElvOur
NOE ElvOur
rats Echr
GndE EVwr
eJA=55°CIW for 1" Sq pad
Tabisl:
6JA=90°CNV for 0.4" Sq pad
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, these specifications apply over CN--1wF, V|N=5V, (bur=10pF, and T--0 to 125°C.
Typical values refer to TJ=25°C.
PARAMETER SYM TEST CONDITION MIN TYP MAX UNITS
Output Voltage Vo lo=10mA, TJ=25°C 3.267 3.300 3.333 V
lo=10mA 3.235 3.300 3.365
Line Regulation lo=10mA, 4.75V
Load Regulation (Note 1) 10mADropout Voltage (Note 2) lo=1A 1.3 V
lo=800mA 1.2
Current Limit AVo=100mV 1.1 A
Thermal Regulation 30ms Pulse, lo=800mA 0.01 0.02 %/W
Ripple Rejection f=120Hz, Co=25wF Tantalum,
lo=0.5A 6O 70 dB
Temperature Stability lo=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 connections is required in order to maintain accurate data.
Note 2: Dropout voltage is defined as the minimum differential voltage between VIN and VouT required to maintain
regulation at VOUT. It is measured when the output voltage drops 1% below its nominal value.
Rev. 1.5
02/04/03
