iru3034 International Rectifier Corp., iru3034 Datasheet
iru3034
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iru3034 Summary of contents
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... IRU3034CS(PbF) 8-PIN PWM SWITCHER CONTROLLER IC WITH CURRENT LIMITING DESCRIPTION The IRU3034 IC provides a low cost switching controller with true short circuit protection all in a compact 8-pin surface mount package, providing a low cost switching solution for dual supply processor applications that re- quire switching regulator for the 3.3V supply such as the applications with AGP on-board ...
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... IRU3034 & (PbF) ABSOLUTE MAXIMUM RATINGS V Supply Voltages .................................................. 20V 12 Fb Pin Voltages ......................................................... -0. Storage Temperature Range ....................................... -65 To 150°C Operating Junction Temperature ................................. 0 To 150°C PACKAGE INFORMATION 8-PIN PLASTIC SOIC (S) TOP VIEW Drv CS CS Gnd ...
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... BLOCK DIAGRAM HYST 2 4 Drv 1 Gnd 5 Figure 2 - Simplified block diagram of the IRU3034 Reg R UVLO PWM Control 1.25V V REF 3R S.S. / Hiccup Control www ...
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... C4 R2 Figure 3 - Typical application of IRU3034 in a flexible motherboard with the 4-bit VID output voltage selection. This circuit is done using a dual layout with the IRU3033 part. The advantage of this circuit is that it uses a single jumper that programs the output voltage in 16 steps with 0.1V steps from 2V to 3.5V, designed for Intel P55, P54, AMD K5 & ...
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... PENTIUM CORE SUPPLY APPLICATION PARTS LIST (IRU3034 and IRU3033 Dual Layout) Low Cost 4-Bit VID Ref Desig Description U1 LDO/Switcher IC Q2 MOSFET D1 Schottky Diode L2 Inductor L1 Inductor R1 Resistor R2 Resistor R3 Resistor R4A * Resistor R4B * Resistor R5A Resistor R5B Resistor R5C Resistor R5D Resistor R5E ...
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... C1 C2 Figure 4 - The circuit in figure 4 is the application of the IRU3034 which is done using a dual layout with IRU3033 in a switching mode only. This circuit can be used to generate a low cost 5V to 3.3V for either Pentium application with AGP socket or in Pentium II applications where it is desirable to generate an accurate on-board 3.3V supply. ...
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... SMT 1 576 , 1%, SMT 1 3.83K , 1%, SMT 1%, SMT 1 470 F, Elect 1 6MV1000GX, 1000 F, 6.3V, Elect Ceramic, SMT 1 10pF, Ceramic, SMT 1 0 6MV1000GX, 1000 F, 6.3V, Elect 1 0.047 F www.irf.com IRU3034 & (PbF OUT Manuf IR IR Motorola Micro Metal (core) Sanyo Sanyo Sanyo 7 ...
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... Rs=5m , then the current limit pro- gramming resistor, R Vcs = Vcs/I CL Where the internal current source of IRU3034 B www.irf.com ) placed CL . Once the OUT is calculated as 0.005 = 0.1V = (0.1V)/( ...
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... However, the average power dissipated is much lower than 2W due to the long off time caused by the hiccup circuit of IRU3034. The average power is in fact the short circuit period divided by the short circuit period plus the off time or "Hiccup" period. For example, if the short ...
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... IRU3034 & (PbF) TYPICAL PERFORMANCE CHARACTERISTICS IRU3034 Output Voltage 1.28 Max 1.27 1.26 1.25 1.24 1.23 Min 1.22 -40°C -25°C 0°C +25°C +50°C +75°C Spec Max. Spec Min. Vout 7V Figure 6 - Output Voltage. IRU3034 Supply Current 14.00 12.00 10.00 8.00 6.00 4.00 2.00 0.00 -40°C -25°C 0°C +25°C +50°C +75°C V12 Current Figure 8 - Supply Current. IR WORLD HEADQUARTERS : 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 ...
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... SOIC Package 8-Pin Surface Mount, Narrow Body PIN NO. 1 0.38 0.015 SYMBOL NOTE: ALL MEASUREMENTS ARE IN MILLIMETERS. IRU3034 & (PbF) H DETAIL 8-PIN MIN MAX A 4.80 4.98 1.27 BSC 0.53 REF 0.36 0.46 3.81 3.99 F 1.52 1.72 0.10 0.25 7 BSC I 0.19 0.25 J 5.80 6. 0.41 1.27 T 1.37 1.57 www.irf.com L DETAIL ...
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... IRU3034 & (PbF) IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 Feed Direction Figure A Visit us at www.irf.com for sales contact information Data and specifications subject to change without notice. 10/11/2005 www.irf.com TAC Fax: (310) 252-7903 ...