Data Sheet No. PD94121 revA IRU1010-33(PbF) 1A LOW DROPOUT POSITIVE FIXED 3.3V REGULATOR DESCRIPTION FEATURES Guaranteed < 1.3V Dropout at Full Load Current Fast Transient Response 1% Output Voltage Initial Accuracy Built-In Thermal Shutdown Available in SOT-223, D-Pak, Ultra Thin-PakTM and 8-Pin SOIC Surface-Mount Packages APPLICATIONS VGA & Sound Card Applications Standard 3.3V Chip Set and Logic Applications The IRU1010-33 is a low dropout three-terminal fixed output regulator with minimum of 1A output current capability. This product is specifically designed to provide well regulated supply for low voltage IC applications such as VGA, sound & DVD cards. The IRU1010-33 is guaranteed to have <1.3V dropout at full load current making it ideal to provide well regulated with 4.75V to 7V input supply. The IRU1010-33 is specifically designed to be stable with low cost aluminum capacitors while maintaining stability with low ESR tantalum caps. TYPICAL APPLICATION 5V C1 10uF VIN 3 IRU1010-33 VOUT Gnd 2 3.3V / 1A C2 10uF 1 Figure 1 - Typical application of IRU1010-33 in a 5V to 3.3V regulator. PACKAGE ORDER INFORMATION Basic Part (Non-Lead Free) TJ (°C) 0 To 150 2-PIN PLASTIC TO-252 (D-Pak) IRU1010-33CD 2-PIN PLASTIC Ultra Thin-PakTM (P) IRU1010-33CP 8-PIN PLASTIC SOIC (S) IRU1010-33CS 3-PIN PLASTIC SOT-223 (Y) IRU1010-33CY Leadfree Part TJ (°C) 0 To 150 2-PIN PLASTIC TO-252 (D-Pak) Not available 2-PIN PLASTIC 8-PIN PLASTIC Ultra Thin-PakTM (P) SOIC (S) Not available IRU1010-33CSPbF www.irf.com 3-PIN PLASTIC SOT-223 (Y) Not available 1 IRU1010-33(PbF) 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 2-PIN PLASTIC TO-252 (D-Pak) 3 2-PIN ULTRA THIN-PAKTM (P) VIN 3 VIN Tab is VOUT Tab is VOUT 1 Gnd θJA=70°C/W for 0.5" Sq pad 1 Gnd θJA=70°C/W for 0.5" Sq pad 8-PIN PLASTIC SOIC (S) VIN NC NC Gnd 1 8 2 7 3 6 4 5 3-PIN PLASTIC SOT-223 (Y) VOUT VOUT VOUT VOUT Tab is VOUT θJA=55°C/W for 1" Sq pad 3 VIN 2 VOUT 1 Gnd θJA=90°C/W for 0.4" Sq pad ELECTRICAL SPECIFICATIONS Unless otherwise specified, these specifications apply over CIN=1µF, VIN=5V, COUT=10µF, and TJ=0 to 1258C. Typical values refer to TJ=258C. PARAMETER Output Voltage Line Regulation Load Regulation (Note 1) Dropout Voltage (Note 2) Current Limit Thermal Regulation Ripple Rejection Temperature Stability Long Term Stability RMS Output Noise SYM Vo TEST CONDITION Io=10mA, TJ=258C Io=10mA Io=10mA, 4.75V<VIN<7V 10mA<Io<1A Io=1A ∆Vo=100mV 30ms Pulse, Io=1A f=120Hz, Co=25µF Tantalum, Io=0.5A Io=10mA TJ=1258C, 1000Hrs TJ=258C, 10Hz<f<10KHz MIN 3.267 3.235 TYP 3.300 3.300 MAX 3.333 3.365 7 17 1.3 1.1 0.01 60 70 0.5 0.3 0.003 0.02 1 UNITS V mV mV V A %/W dB % % %Vo Note 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. 2 www.irf.com IRU1010-33(PbF) PIN DESCRIPTIONS PIN# PIN SYMBOL PIN DESCRIPTION 1 Gnd Ground pin. This pin must be connected to ground plane using a low inductance short connection. 2 VOUT The output of the regulator. This pin is also connected to the tab of the package. An output capacitor must be connected to this pin to insure stability of the regulator. 3 VIN Input pin of the regulator. BLOCK DIAGRAM VIN 3 2 VOUT + 1.25V + CURRENT LIMIT THERMAL SHUTDOWN 1 Gnd Figure 2 - Simplified block diagram of the IRU1010-33. www.irf.com 3 IRU1010-33(PbF) (D) TO-252 Package 2-Pin K A B C L M 78 458 D J N E O P Q R G F S H R1 SYMBOL A B C D E F G H J K L M N O P Q R R1 S CL MIN 6.477 5.004 0.686 7.417 9.703 0.635 2.286 MAX 6.731 5.207 0.838 8.179 10.084 0.889 BSC 4.521 4.623 &1.52 &1.62 2.184 2.388 0.762 0.864 1.016 1.118 5.969 6.223 1.016 1.118 0.102 0 0.534 0.686 R0.31 TYP R0.51 TYP 0.428 0.588 NOTE: ALL MEASUREMENTS ARE IN MILLIMETERS. 4 www.irf.com IRU1010-33(PbF) (P) Ultra Thin-PakTM 2-Pin A A1 U E K V B H M L P G D G1 N C R CL SYMBOL A A1 B C D E G G1 H K L M N P R U V MAX MIN 6.17 5.91 5.79 5.54 6.27 6.02 2.03 1.70 0.79 0.63 0.33 0.17 2.41 2.16 4.70 4.45 9.68 9.42 1.27 0.76 0.13 0.02 1.14 0.89 0.25 0.25 1.19 0.94 68 28 3.30 2.92 5.08 NOM NOTE: ALL MEASUREMENTS ARE IN MILLIMETERS. www.irf.com 5 IRU1010-33(PbF) (S) SOIC Package 8-Pin Surface Mount, Narrow Body H A B C E DETAIL-A PIN NO. 1 L D DETAIL-A 0.386 0.015 x 458 K T F I J G 8-PIN SYMBOL A B C D E F G H I J K L T MAX MIN 4.98 4.80 1.27 BSC 0.53 REF 0.46 0.36 3.99 3.81 1.72 1.52 0.25 0.10 78 BSC 0.19 5.80 08 0.41 1.37 0.25 6.20 88 1.27 1.57 NOTE: ALL MEASUREMENTS ARE IN MILLIMETERS. 6 www.irf.com IRU1010-33(PbF) (Y) SOT-223 Package 3-Pin SYMBOL A A1 B B1 C D E e e1 H Q Q1 Q2 S T D B E e H S MIN 1.498 0.02 2.895 0.637 0.239 6.299 3.30 2.209 4.496 6.70 08 78 78 0.838 1.092 MAX 1.702 0.11 3.15 0.85 0.381 6.706 3.708 2.953 4.699 7.30 108 168 168 1.05 1.30 NOTE: ALL MEASUREMENTS ARE IN MILLIMETERS. e1 Q1 T B1 A Q C A1 Q2 www.irf.com 7 IRU1010-33(PbF) PACKAGE SHIPMENT METHOD PKG DESIG D P S Y PACKAGE DESCRIPTION TO-252, (D-Pak) Ultra Thin-PakTM PIN COUNT 2 2 8 3 SOIC, Narrow Body SOT-223 1 1 PARTS PER TUBE 75 75 95 80 1 1 Feed Direction Figure A 1 1 T&R Orientation Fig A Fig B Fig C Fig D PARTS PER REEL 2500 2500 2500 2500 1 1 Feed Direction Figure B 1 1 1 1 Feed Direction Figure D Feed Direction Figure C IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 TAC Fax: (310) 252-7903 Visit us at www.irf.com for sales contact information Data and specifications subject to change without notice. 8/18/2005 8 www.irf.com