sc4608mltrt Semtech Corporation, sc4608mltrt Datasheet
sc4608mltrt
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sc4608mltrt Summary of contents
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POWER MANAGEMENT Description The SC4608 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 3.3V ...
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POWER MANAGEMENT Electrical Characteristics Unless otherwise specified 3.3V ...
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POWER MANAGEMENT Pin Configuration TOP VIEW (16 Pin MLP) Pin Descriptions ...
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POWER MANAGEMENT Pin Descriptions (Cont ...
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POWER MANAGEMENT Block Diagram 2007 Semtech Corp. 7 SC4608 www.semtech.com ...
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POWER MANAGEMENT Application Information Enable The SC4608 is enabled by applying a voltage greater than 2.7 volts to the AV pin. The SC4608 is disabled when DD AV falls below 2.35 volts or when sleep mode opera- DD tion is ...
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POWER MANAGEMENT Application Information (Cont.) width driver pulses while the output voltage is low and allows these pulses to increase to their steady state duty cycle as the output voltage reaches its regulated value. With this, the inrush current from ...
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POWER MANAGEMENT Application Information (Cont.) between the upper and lower MOSFETs and also mini- mizes the conduction loss in the body diode of the bot- tom MOSFET for high efficiency applications. TOP MOSFET Gate Drive TOP MOSFET Gate Drive BOTTOM ...
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POWER MANAGEMENT Application Information (Cont.) mode, the RMS value of the input capacitor can be cal- culated from OUT CIN OMAX ( RMS ) This current gives the capacitor’s power loss as follows ...
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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 SC4608 R13 R13 SC4608 SC4608 16 16 PVDD PVDD AVDD AVDD ISET ISET 3 3 ...
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POWER MANAGEMENT Bill of Materials ...
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POWER MANAGEMENT PCB Layout 2007 Semtech Corp. COMPONENT SIDE (TOP) COMPONENT SIDE (BOTTOM) 16 SC4608 www.semtech.com ...
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POWER MANAGEMENT PCB Layout (Cont.) (TOP) (INTER LAYER 1) 2007 Semtech Corp. (BOTTOM) (INTER LAYER 2) 17 SC4608 www.semtech.com ...
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POWER MANAGEMENT Outline Drawing - MLP-16 A PIN 1 INDICATOR (LASER MARK) A aaa D/2 NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL ...
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... COMPANY'S MANUFACTURING GUIDELINES ARE MET. Contact Information Phone: (805)498-2111 FAX (805)498-3804 2007 Semtech Corp. DIM Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 19 SC4608 DIMENSIONS INCHES MILLIMETERS (.156) (3.95) .122 3.10 .106 2.70 .106 2.70 .026 ...