iru3033 International Rectifier Corp., iru3033 Datasheet
iru3033
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iru3033 Summary of contents
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... IRU3033 Drv1 V V FB1 12(SW Figure 1 - Typical application of IRU3033 in a flexible mother board designed for Intel P55 , P54 , AMD K5 well as Cyrix M1 PACKAGE ORDER INFORMATION Rev. 1.7 07/17/02 DESCRIPTION The IRU3033 IC combines a switching controller and a linear regulator controller all in a compact 8-pin surface ...
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... IRU3033 ABSOLUTE MAXIMUM RATINGS V ,V Supply Voltages ....................................... 20V 12 12(SW) Fb Pin Voltages ........................................................ -0. Storage Temperature Range ...................................... -65°C To 150°C Operating Junction Temperature ................................ PACKAGE INFORMATION 8-PIN PLASTIC SOIC (S) TOP VIEW Drv1 Drv2 2 7 12(SW FB1 FB2 V Gnd 4 5 HYST u =1608C/W ...
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... BLOCK DIAGRAM V V 12(SW) HYST 2 4 Drv 1 1 Gnd 5 Figure 2 - Simplified block diagram of the IRU3033. Rev. 1.7 07/17/02 V FB1 3 UVLO V REF PWM Control 1.25V www.irf.com IRU3033 pin to set the output ...
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... Figure 3 - Typical application of IRU3033 in a flexible motherboard with the 4-bit VID output voltage selection. This circuit 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 & K6 cally shuts down the I/O regulator when a single plane processor is dropped in the socket. ...
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... Note 1: For the applications where it is desirable to eliminate the heat sink, the IRL3103S for Q2 and MBR1545CT for D2 in TO-263 packages with minimum of 1" square copper pad can be used. Rev. 1.7 07/17/02 Qty Part # 1 IRU3033CS (8-Pin SOIC) 1 MTP3055 (TO-220) 1 IRL3303 (TO-220) IRL3103S (TO-263) (Note 1) 1 ...
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... C1 C2 Figure 4 - This unique application of IRU3033 allows the designer to switch between Linear or Switching mode of operation using a single IC. This circuit has the flexibility to be used for low current operation in Linear mode for cost reasons and yet be able to operate in the Switching mode if the load current increases and the heat generated by the Linear operation will be an issue ...
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... Note 1: For the applications where it is desirable to eliminate the heat sink, the IRL3103S for Q2 and MBR1545CT for D2 in TO-263 packages with minimum of 1" square copper pad can be used. Rev. 1.7 07/17/02 Part # 1 IRU3033CS (8-Pin SOIC) 1 IRL3303 (TO-220) IRL3103S (TO-263) (Note 1) 1 MBR1045CT (TO-220) ...
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... C1 C2 Figure 5 - The circuit in figure 4 is the application of the 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. Ref Desig ...
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... REF R1 = Resistor connected from V IRU3033 Resistor connected from V The IRU3033 requires the use of an output capacitor as part of the frequency compensation in order to be stable. Typical designs for the microprocessor applications use standard electrolytic capacitors with typical ESR in the range 100mV and an output capacitance of 500 to 1000mF ...
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... B Select R = 576V WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 10 Frequency Calculation The IRU3033 frequency of operation is calculated using the following formula (Vo3(1 - D)3ESR) / (L3DVo) Where Output voltage ( Duty cycle ESR = Output capacitor ESR ...
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... Surface Mount, Narrow Body PIN NO NOTE: ALL MEASUREMENTS ARE IN MILLIMETERS. Rev. 1.7 07/17/02 (S) SOIC Package DETAIL-A 0.386 0.015 x 458 K F 8-PIN SYMBOL MIN MAX A 4.80 4.98 B 1.27 BSC 0.53 REF C D 0.36 0.46 E 3.81 3.99 F 1.52 1.72 G 0.10 0. BSC I 0.19 0.25 J 5.80 6. 0.41 1.27 T 1.37 1.57 www.irf.com IRU3033 H L DETAIL ...
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... IRU3033 PACKAGE SHIPMENT METHOD PKG PACKAGE DESIG DESCRIPTION S SOIC, Narrow Body IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 12 PIN PARTS COUNT PER TUBE Feed Direction Figure A Visit us at www.irf.com for sales contact information Data and specifications subject to change without notice. 02/01 www ...