SC2616 Semtech, SC2616 Datasheet
SC2616
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SC2616 Summary of contents
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... POWER MANAGEMENT Description The SC2616 is a fully integrated DDR power solution pro- viding power for the VDDQ and the VTT rails. The SC2616 also completely adheres to the ACPI sleep state power requirements. A synchronous buck controller provides the high current of the VDDQ at high efficiency, while a linear sink/source regulator provides the termination voltage with 2 Amp Source/Sink capability ...
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... Suspend to RAM S5 Suspend to disk 0.1uF Figure 1: ACPI controller supplies “always on” 5V supply, eliminating the need for back to back MOSFETs. (see applications section) 2003 Semtech Corp. Ins tantly Available 5V Dual ACPI Controller (SC1549) Cin 10k U4 SC2616 16 9 12VCC 5VCC 4 15 5VSBY SLP_S3 BG ...
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... SC2616 www.DataSheet4U.com ± ...
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... POWER MANAGEMENT Timing Diagram 5V, 12V Rails S3 S5 1.25V 1.0V 0.3V SS/EN PGOOD TG BG STBY VDDQ VTT Vssqsb Vddqsw VDDQ S0 Block Diagram 2003 Semtech Corp SC2616 www.DataSheet4U.com S0 www.semtech.com ...
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... POWER MANAGEMENT Typical Characteristics 1E+3 10E+3 Frequency (Hz) Switching Section Error Amplifier Gain 0.0% -0.1% -0.2% 0.0 2.0 4.0 6.0 Io (A) VDDQ Load Regulation 1.0% 0.5% 0.0% -0.5% -1.0% -2.5 -2.0 -1.5 -1.0 -0.5 0.0 Io (A) VTT Load Regulation, Source and Sink 2003 Semtech Corp. 100% 80% 60% 40% 20% 0% 1.2 100E+3 1E+6 VCOMP vs Duty Cycle 8.0 10.0 12.0 0.5 1.0 1.5 2.0 2.5 7 SC2616 www.DataSheet4U.com 1.3 1.4 1.5 1.6 V (V) COMP www.semtech.com 1.7 ...
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... Evaluation Board Schematic +12V J1 12V C14 C15 100uF 0.1uF 1500uF J3 1500uF J2 5V GND STBY J4 C16 GND R12 R13 10uF 10k 10k * * J6 GND U4 SC2616 16 12VCC 5VSBY J7 4 5VSBY BF_CUT/S3 11 SLP_S3 J11 10 SLP_S5 PWR GD/S5 18 SS/EN J12 17 COMP SS/EN 12 AGND R6 33K 3 LGND C10 2 VTTSNS C11 ...
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... SC2616 www.DataSheet4U.com ...
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... Figure state transition with 800mA Ch1: TG drive, Ch12 VDDQ w/2.5V offset, Ch3, S3, Ch4: SS/EN Note: VDDQ changes 22mV between S0 and S3 states (see cursor). 2003 Semtech Corp. 600mA 600mA 600mA 600mA load on VDDQ 800mA 800mA load on VDDQ 800mA 800mA 10 SC2616 www.DataSheet4U.com www.semtech.com ...
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... VDDQ switcher recovers and takes control of the VDDQ supply voltage. When S5 and S3 are pulled low, all supplies shut down. The SS/EN pin must be pulled low (<0.3V) and high again to restart the SC2616. This can be achieved by cycling the input supplies, 5V and 2003 Semtech Corp. ...
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... Semtech Corp. Thermal Shutdown There are three independent Thermal Shutdown protection circuits in the SC2616: the VDDQ linear regulator, the VTT source regulator, and the VTT sink regulator. If any of the three regulators’ temperature rises above the threshold, that regulator will turn off independently, until the temperature falls below the thermal shutdown limit ...
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... Resr Rb 13 SC2616 www.DataSheet4U.com LCo esr ) Log 20 Log LCo 3000 10 Vin=5V SC2616 AND FETS MODULATOR + EA - 3.3uH OUT COMP 3000uF Cs Cp 22mOhm Rs www.semtech.com kHz VOUT 6.98k 8.06k ...
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... Semtech Corp. 100 kHz -20 -40 -60 100.0E+0 Figure 5: Type 2 Error Amplifier Compensation y due to EA rolloff ) 14 SC2616 www.DataSheet4U.com Compensated Error Amp gain G F Fz1 B Fp1 C Total open Fp(lc) loop gain Fz(esr) Filter+modulator +divider gain Fco 1.0E+3 10.0E+3 100.0E+3 Frequency (Hz) www.semtech.com H D 1.0E+6 ...
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... MLP terminal and the PCB land metalization.) The proposed stencil designs enables out- gassing of the solder paste during reflow as well as controlling the finished solder thickness. 15 SC2616 www.DataSheet4U.com www.semtech.com ...
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... POWER MANAGEMENT Outline Drawing - MLP-18 TERMINAL 1 TOP VIEW IDENTIFIER TERMINAL 1 BOTTOM VIEW 1 CONTROLLING DIMENSIONS: MILLIMETERS 2003 Semtech Corp. 16 SC2616 www.DataSheet4U.com www.semtech.com ...
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... POWER MANAGEMENT Land Pattern - MLP-18 Contact Information Phone: (805)498-2111 FAX (805)498-3804 2003 Semtech Corp. Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 17 SC2616 www.DataSheet4U.com www.semtech.com ...