US3005CW UNISEM [UNISEM], US3005CW Datasheet
US3005CW
Related parts for US3005CW
US3005CW Summary of contents
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... Notes: Pentium III is trade mark of Intel Corp. PACKAGE ORDER INFORMATION PACKAGE ORDER INFORMATION Device US3004CW US3005CW Rev. 1.2 12/8/00 DESCRIPTION DESCRIPTION The US3004/5 series of controller ICs are specifically designed to meet Intel specification for Pentium III microprocessor applications as well as the next genera- tion P6 family processors ...
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US3004,US3005 ABSOLUTE MAXIMUM RATINGS ABSOLUTE MAXIMUM RATINGS V5 supply Voltage ........................................... 10V V12 Supply Voltage ............................................ 20V Storage Temperature Range ................................. -65 TO 150 C Operating Junction Temperature Range .......... 0 TO 125 C PACKAGE INFORMATION PACKAGE INFORMATION 20 PIN ...
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UVLO Section UVLO Threshold-12V UVLO Hysterises-12V UVLO Threshold-5V UVLO Hysterises-5V Error Comparator Section Input bias current Input Offset Voltage Delay to Output Current Limit Section C.S Threshold Set Current C.S Comp Offset Voltage Hiccup Duty Cycle Supply Current Operating Supply ...
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US3004,US3005 PIN DESCRIPTIONS PIN DESCRIPTIONS PIN# PIN SYMBOL Pin Description 19 D0 LSB input to the DAC that programs the output voltage. This pin can be pulled up exter- nally by a 10k resistor to either 3. supply. ...
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BLOCK DIAGRAM BLOCK DIAGRAM Enable V12 UVLO V5 Vset D0 D1 5Bit DAC, D2 Ctrl Logic D3 D4 Vfb2 Lin2 Lin1 Vfb1 Figure 1 - Simplified block diagram of the US3004. Rev. 1.2 12/8/00 Vset Enable PWM + Control Slope ...
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US3004,US3005 TYPICAL APPLICATION TYPICAL APPLICATION Pentium III C13 C3 3. 12V 12 5 R18 V12 V5 CS VID4 VID3 VID2 VID1 VID0 ...
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US3004/5 Application Parts List Q1 MOSFET Q2 MOSFET Q3 Bipolar Trans MOSFET L1 Inductor L2 Inductor C1 Capacitor, Ceramic C2,6 Capacitor, Ceramic C3 Capacitor, Electrolytic C4 Capacitor, Ceramic C5 Capacitor, Ceramic C7,14,15 Capacitor, Ceramic C8 Capacitor, Ceramic C9 ...
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US3004,US3005 TYPICAL APPLICATION TYPICAL APPLICATION Pentium with AGP C13 C3 3. 12V 12 5 R18 V12 VID4 VID3 VID2 VID1 VID0 Figure 3- ...
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US3004 Application Parts List Ref Desig Description Q1 MOSFET Q2 MOSFET Q3,4 MOSFET L1 Inductor L2 Inductor C1 Capacitor, Ceramic C2,6 Capacitor, Ceramic C3 Capacitor, Electrolytic C4 Capacitor, Ceramic C5 Capacitor, Ceramic C7,14,15 Capacitor, Ceramic C8 Capacitor, Ceramic C9 Capacitor, ...
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US3004,US3005 Application Information Application Information An example of how to calculate the components for the application circuit is given below. Assuming, two sets of output conditions that this regu- lator must meet, a) Vo=2.8V , Io=14.2A, Vo=185mV, Io=14.2A b) Vo=2V ...
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However if the in- ductor is too small , the output ripple current and ripple voltage become too large. One solution to bring the ripple current down is to increase the switching frequency , ...
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US3004,US3005 Following the same procedure for the Schottcky diode results in a heatsink with C/W. Although it is possible to select a slightly smaller heatsink, for sim- plicity the same heatsink as the one for the high ...
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For 1.5V output, Rt can be shorted and Rb left open. However it is recommended to leave the resistor dividers as shown in the typical application circuit so that the output voltage can be adjusted higher to account for the ...
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US3004,US3005 Layout Considerations Switching regulators require careful attention to the lay- out of the components, specifically power components since they switch large currents. These switching com- ponents can create large amount of voltage spikes and high frequency harmonics if some ...