CS5231-3GDF8 ONSEMI [ON Semiconductor], CS5231-3GDF8 Datasheet
CS5231-3GDF8
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CS5231-3GDF8 Summary of contents
Page 1
... V OUT input voltage is lower than the output voltage. The CS5231−3 can be used to provide power to an ASIC on a PCI Network Interface Card (NIC). When the system enters a Sleep State and the 5.0 V input drops below 4.4 V, the AuxDrv control signal on the CS5231−3 is activated turning on the external PFET. This switches the supply source from the 5.0 V input to the 3.3 V input through the PFET, guaranteeing a constant 3.3 V output to the ASIC that is “ ...
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... ESD Damage Threshold (Human Body Model second maximum above 183 C. *The maximum package power dissipation must be observed. ABSOLUTE MAXIMUM RATINGS Pin Name Pin Symbol IC Power Input Output Voltage Auxiliary Drive Output AuxDrv IC Ground CS5231−3 Internal Bias − Error + V UV Amp IN - ...
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... Guaranteed by design, not 100% production tested. Thermal shutdown is 100% functionally tested at wafer probe. Package Lead # 2 D PAK−5 SOIC− Tab CS5231− < T < < T < 125 C; 4. Test Conditions < 500 mA. OUT = 10mA 500 mA OUT = 10 mA ...
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... C 0.0 0.0 0.2 I (A) OUT Figure 4. Load Regulation vs. I Temperature 0.0 0.2 0.4 0.6 I (A) OUT Figure 6. V vs. I Over Junction OUT OUT Temperature CS5231−3 1.2 1.0 0.8 0.6 0.4 0.2 0 100 120 0 Figure 3. Line Regulation vs. I 390 380 370 360 0 0.4 Over Figure 5. Reverse Current vs. Junction OUT 4.52 125 C 4. ...
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... Stable Region 100 10 0.4 0 1.0 Figure 9. Region of Stable Operation 3.4 3.3 3.2 500 10 100 120 140 Figure 11. Transient Response OUT CS5231−3 GND AuxDrv indicates PFET body diode Figure 12. Application Circuit http://onsemi.com 5 2.0 3.0 4.0 5.0 6.0 7.0 Capacitance ESR ( ...
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... THEORY OF OPERATION The CS5231− fixed 3.3 V linear regulator that contains an auxiliary drive control feature. When V greater than the typical 4.5 V threshold, the IC functions as a linear regulator. It provides up to 500 mA of current to a load through a composite PNP−NPN pass transistor. An output capacitor greater than 10 mF with equivalent series resistance less than 1 ...
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... OUT V AUXDRV I = 375 3.465 OUT AUX Figure 18. Power−Up 3.465 V. I AUX is Compensated By Higher Value of V CS5231− OUT V AUXDRV Figure 19. Power−Down, V STABILITY CONSIDERATIONS and 3.3 is AUX The output capacitor helps determine three main characteristics of a linear regulator: startup, transient response and stability ...
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... R due to temperature. DS(ON not possible to remotely sense the output voltage of the CS5231−3 since the feedback path to the error amplifier is not externally available important to minimize results voltage drops due to metal resistance of high current PC OUT board traces ...
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... T J(MAX A(MAX Maximum ambient temperature and power dissipation are determined by the design, while q JA package manufacturer. The maximum junction temperature for operation of the CS5231−3 within specification is 150 C. The maximum power dissipation of a linear regulator is given as P D(MAX IN(MAX OUT(MIN LOAD(MAX IN(MAX) ) ...
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... The CS5231−3 power supply management solution is implemented in an area less than 1.5 square inches. Due to the simplicity of the design, output current must be derated if the CS5231−3 is operated at V voltages greater than 7.0 V. Figure 21 provides the derating curve on a maximum power dissipation if heatsink is added. ...
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... V tantalum capacitors C1 p−channel FET transistor U1 Linear regulator with auxiliary T1−T6 Turret pins CS5231−3 Temperature Performance The graph below shows thermal performance for the CS5231−3 across the normal operating output current range Figure 25 ...
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... PACKAGE DIMENSIONS CASE 936AC−01 2 For D PAK Outline and Dimensions − Contact Factory http://onsemi.com CS5231− PAK−5 DP SUFFIX ISSUE O 12 ...
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... G C SEATING PLANE −Z− 0.25 (0.010 PACKAGE THERMAL DATA Parameter R qJC R qJA *Depending on thermal properties of substrate. R CS5231−3 PACKAGE DIMENSIONS SOIC−8 DF SUFFIX CASE 751−07 ISSUE 0.10 (0.004 SOLDERING FOOTPRINT 1.52 0.060 7.0 4.0 0.275 ...
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... Japan: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 http://onsemi.com 14 ON Semiconductor Website: http://onsemi.com Order Literature: http://www.onsemi.com/litorder For additional information, please contact your local Sales Representative. CS5231−3/D ...