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CS5231-3GDF8 Datasheet(PDF) 11 Page - ON Semiconductor |
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CS5231-3GDF8 Datasheet(HTML) 11 Page - ON Semiconductor |
11 / 14 page CS5231−3 http://onsemi.com 11 PC Board Layout Artwork The PC Board is a single layer copper design. The layout artwork is reproduced at actual size below. Figure 23. Top Copper Layer Figure 24. Top Silk Screen Layer 2” 1.8” 2” 1.8” VIN 5.0 V GND GND VOUT 3.3 V AUX 3.3 V AUX.DRV Test Description The startup and supply transition waveforms shown in Figures 13 through 19 were obtained using the application circuit board with a resistive load of 8.8 W. This provides a DC load of 375 mA when the regulated output voltage is 3.3 V. A standard 2.0 A bench supply was used to provide power to the application circuit. The transient response waveforms shown in the Typical Performance Characteristics section were obtained by switching a 6.3 W resistor across the output. Temperature Performance The graph below shows thermal performance for the CS5231−3 across the normal operating output current range. Figure 25. Package Temperature vs. Load Current (VIN = 5.0 V, TA = 235C) Load Current (mA) 55 0 50 45 50 40 35 30 25 20 100 150 200 250 300 350 400 450 500 PFET RDS(ON) Performance The graph provided below show typical RDS(ON) performance for the PFET. The data is provided as VDS vs IOUT for different values of VAUX. Figure 26. PFET VDS vs. IOUT IOUT (mA) 140 0 100 100 120 80 60 40 20 0 200 300 400 500 160 VAUX = 3.135 V VAUX = 3.300 V VAUX = 3.465 V APPLICATIONS CIRCUIT BILL OF MATERIALS Ref des Description Part Number Manufacturer Contact Information C1, C2 33 mF, 16 V tantalum capacitors TAJD336K016 AVX Corp www.avxcorp.com 1−843−448−9411 Q1 p−channel FET transistor MGSF1P02ELT1 ON Semiconductor http://onsemi.com U1 Linear regulator with auxiliary CS5231−3DPS ON Semiconductor http://onsemi.com T1−T6 Turret pins 40F6023 Newark Electronics www.newark.com 1−800−463−9275 |
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