sc4609mltrt Semtech Corporation, sc4609mltrt Datasheet
sc4609mltrt
Related parts for sc4609mltrt
sc4609mltrt Summary of contents
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POWER MANAGEMENT Description The SC4609 is a voltage mode step down (buck) regula- tor controller that provides accurate high efficiency power conversion from an input supply range of 2.7V to 5.5V. A high level of integration reduces external component count, ...
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POWER MANAGEMENT Absolute Maximum Ratings Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not implied ...
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POWER MANAGEMENT Electrical Characteristics (Cont.) Unless otherwise specified, VCC = 3.3V 270pF ...
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POWER MANAGEMENT Pin Configuration TOP VIEW BST DRVH PHASE VCC 1 ISET 2 COMP FSET VSENSE SS (MLP12, 4x4) Pin Descriptions ...
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POWER MANAGEMENT Pin Descriptions (Cont ...
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POWER MANAGEMENT Block Diagram 2006 Semtech Corp. 6 SC4609 www.semtech.com ...
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POWER MANAGEMENT Application Information Enable The SC4609 is enabled by applying a voltage greater than 2.7 volts to the VCC pin. The SC4609 is disabled when VCC falls below 2.35 volts or when sleep mode opera- tion is invoked by ...
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POWER MANAGEMENT Application Information (Cont.) Over Current Protection The SC4609 detects over current conditions by sensing the voltage across the drain-to-source of the high side MOSFET. The SC4609 determines the high side MOS- FET current level by sensing the drain-to-source ...
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POWER MANAGEMENT Application Information (Cont.) TOP MOSFET Gate Drive TOP MOSFET Gate Drive BOTTOM MOSFET Gate Drive BOTTOM MOSFET Gate Drive Phase node Phase node Figure 3. Timing Waveforms for Gate Drives and Phase Node Inductor ...
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POWER MANAGEMENT Application Information (Cont OUT CIN OMAX ( RMS ) This current gives the capacitor’s power loss as follows CIN ( RMS ) CIN CIN This capacitor’s RMS loss can be ...
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POWER MANAGEMENT Application Information (Cont.) For a low voltage and high output current application such as the 3.3V/1.5V@12A case, the conduction loss is of- ten dominant and selecting low R ticeably improve the efficiency of the converter even though they ...
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POWER MANAGEMENT Application Information (Cont After the compensation, the converter will have the fol- lowing loop gain ...
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POWER MANAGEMENT Application Information (Cont.) Design Example 1. 3V to1.5V @10A application with SC4609 D2 D2 R13 R13 BST BST VCC VCC 4.7u 4. ISET ISET ...
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POWER MANAGEMENT Bill of Materials ...
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POWER MANAGEMENT PCB Layout 2006 Semtech Corp. COMPONENT SIDE (TOP) COMPONENT SIDE (BOTTOM) 15 SC4609 www.semtech.com ...
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POWER MANAGEMENT PCB Layout (Cont.) (TOP) (INTER LAYER 1) 2006 Semtech Corp. (BOTTOM) (INTER LAYER 2) 16 SC4609 www.semtech.com ...
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POWER MANAGEMENT Outline Drawing - MLP-12 A PIN 1 INDICATOR (LASER MARK) A aaa NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE ...
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... COMPANY'S MANUFACTURING GUIDELINES ARE MET. Contact Information Phone: (805)498-2111 FAX (805)498-3804 2006 Semtech Corp. DIM Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 18 SC4609 DIMENSIONS INCHES MILLIMETERS (.148) (3.75) .106 2.70 .091 2.30 .091 2.30 .031 ...