sc4150his-4tr Semtech Corporation, sc4150his-4tr Datasheet
sc4150his-4tr
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sc4150his-4tr Summary of contents
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POWER MANAGEMENT Description The SC4150 is a negative voltage hotswap controller that allows the insertion of line cards into a live backplane. The inrush current is programmable and closed loop op- eration limits the maximum current even under short cir- ...
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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 specified 25° 48V Values in bold apply over full operating temperature range ...
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POWER MANAGEMENT Pin Configuration TOP VIEW PWRGD/PWRGD VEE 4 (SO-8) Pin Descriptions ...
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POWER MANAGEMENT Block Diagram Active High PWRGD Vcc 12.5V Reg 60mV + Vee SENSE Active Low PWRGD Vcc 12.5V Reg 60mV + Vee SENSE 2004 Semtech ...
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POWER MANAGEMENT Applications Information Insertion of a power circuit board into a live backplane would draw enormous inrush currents. This is mostly due to the charging of the bulk electrolytic capacitors at the input of the power module being plugged ...
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POWER MANAGEMENT Applications Information (Cont.) With the input bias current of the UV and OV comparators in the range of 20-30nA, let’s choose the 562k . This yields the values of R2=9.31k 10.2k . With these values ...
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POWER MANAGEMENT Typical Characteristics Below are the snap-shots taken at start-up with different loading conditions and during the application of the over- current at the output of the circuit. For all figures, Ch1 Ch2: V DRAIN Figure 3. ...
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POWER MANAGEMENT Typical Characteristics (Cont.) The following set of snapshots demonstrates effectiveness of SC4250 circuit in the case where connection to the live back plane is very “bouncy”, which is usually the situation with manual replacements of the power cards. ...
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POWER MANAGEMENT Evaluation Board Schematic GND GND(remote) C1 0.1 R1 562k R2 9.31k C2(opt) R3 0.01 10.2k -- 48V Evaluation Board 2004 Semtech Corp. U1 SC4150H PWRGD/PWR AIN C4 R6 18k ...
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POWER MANAGEMENT Evaluation Board - Bill of Materials ...
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... POWER MANAGEMENT Outline Drawing - SO-8 Minimum Land Pattern - SO-8 Contact Information Phone: (805)498-2111 FAX (805)498-3804 2004 Semtech Corp. Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 12 SC4150 JEDEC REF: MS-012AA www.semtech.com ...