MIC5190 Micrel Semiconductor, MIC5190 Datasheet
MIC5190
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MIC5190 Summary of contents
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... General Description The MIC5190 is an ultra high-speed linear regulator. It uses an external N-Channel FET as its power device. The MIC5190 offers ultra high-speed to cope with the fast load demands of microprocessor cores, ASICs, and other high-speed devices. Signal bandwidths of greater than 500kHz can be achieved with a minimum amount of capacitance while at the same time keeping the output voltage clean, regardless of load demand ...
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... Ordering Information Part Number Standard Pb-Free Voltage Current Voltage MIC5190BML MIC5190YML MIC5190BMM MIC5190YMM Pin Configuration VIN SGND 3 VCC1 4 COMP 5 MLF™-10 (ML) Pin Description Pin Number Pin Name 1 VIN 2 3 SGND 4 VCC1 5 COMP 6 7 VCC2 8 OUT 9 PGND 10 December 2005 FB Output Output Junction Temp ...
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... MIC5190 Absolute Maximum Ratings Supply Voltage (V ) .................................................. +6.0V IN Enable Input Voltage (V ) ......................................... +14V ............................................................... +14V CC CC Junction Temperature (T ) ................ – ESD ......................................................................... Note 2 Electrical Characteristics with V = 1.2V 12V Parameter Condition Output Voltage Accuracy Over temperature range Output Voltage Line Regulation ...
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... MIC5190 Typical Characteristics Load Regulation 0.505 0.504 0.503 0.502 0.501 0.5 0.499 0.498 0.497 0.496 0.495 Output Current (A) V Current CC vs. V Voltage Voltage (V) Feedback Current vs. V Voltage ...
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... MIC5190 Functional Characteristics Enable Transient TIME (10 s/div) 10A Load Transient TIME (100 s/div) December 2005 Disable Transient TIME (100 s/div) Transient Response TIME (100 s/div) 5 Micrel www.DataSheet4U.com M9999-120105 ...
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... COMP is the external compensation pin. This allows com- plete control over the loop to allow stability for any type of output capacitor, load currents and output voltage. A detailed explanation of how to compensate the MIC5190 is in the “Designing with the MIC5190” section. SGND, PGND SGND is the internal signal ground which provides an iso- lated ground path from the high current output driver ...
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... The MIC5190 has the ability to externally control gain and bandwidth. This allows the MIC5190 design to be individually tailored for different applications. In designing the MIC5190 important to maintain ad- equate phase margin. This is generally achieved by having the gain cross the 0dB point with a single pole 20dB/decade roll-off ...
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... This will have the effect of both decreasing the voltage drop as well as returning closer and faster to the regulated voltage during the recovery time. MOSFET Selection The typical pass element for the MIC5190 is an N-Channel MOSFET. There are multiple considerations when choosing a MOSFET. These include: • • ...
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... C, while others are rated as high as 175 C. In this case, we’re going to limit our maximum junction temperature to 125 C. The MIC5190 has no internal thermal protection for the MOSFET important that the design provides margin for the maximum junction temperature. Our design will maintain better than 125 C junction temperature with 1 ...
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... GS Output Capacitor The MIC5190 is stable with any type or value of output capacitor (even without any output capacitor!). This allows the output capacitor to select which parameters of the regu- lator are important. In cases where transient response is the ...
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... V OUT the output of a switching regulator. This improves the power supply in several ways. First, using the MIC5190 as a filter on the output can signifi- cantly reduce high frequency noise. Switching power sup- plies tends to create noise at the switching frequency in the COUT form of a triangular voltage ripple. High frequency noise is also created by the high-speed switching transitions ...
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... TIME (100 s/div) Figure 13. Transient Response Due to the high DC gain (80dB) of the MIC5190, it also adds increased output accuracy and extremely high load regula- tion. Distributed Power Supply As technology advances and processes move to smaller and smaller geometries, voltage requirements go down and cur- rent requirements go up ...
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... MIC5190 0.30 (0.012) 0.15 (0.006) MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. ...