SC1116ISKTRT Semtech

SC1116 Linear FET Controller For DDR Supplies POWER MANAGEMENT Description Features The SC1116 is a low cost controller for low power User can select FETs to optimize system current linear DDR power supplies. rating/dropout/cost Low V , 0.5V to 2.5V DDQ The SC1116 comes in a space saving SOT-23 6 pin -40C to +85C operating temperature package. External compensation capable for low ESR loads Minimum external components The SC1116 provides a dual gate drive for the top serial 0.6 mA Quiescent current and bottom parallel MOSFETs with internal shoot through Guaranteed no shoot through protection. SOT-23 6L small package. Fully WEEE and RoHS compliant The wide range of input voltages (3V to 15V) allows the chip to work in many various applications. Applications DDR supplies The variable output voltage is programmable from the SCSI outside with an input divider or an external reference. Line termination Wide range of V , down to 0.5V Source / Sink LDOs DDQ Typical Application Circuit Q1 MOS FET N VDDQ=2.5Vtyp VTT=1.25Vtyp R1 47uF U1 1k 0.5% typ SC1116 GND 1 6 VCC DRVH Vcc=3 to 15V 0.1uF 2 5 GND FB Q2 3 4 MOS FET N REF DRVL R2 1k 1k 1k 0.5% 0.1uF typ typ 4.7nF 4.7nF typ typ Notes: (1) Values used for optional compensation are 1K and 4.7nF typical. (2) When using 3V as Vcc, use of low threshold FETs is a must. Revision: March 28, 2007 1 www.semtech.comSC1116 POWER MANAGEMENT Absolute Maximum Rating 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. Parameter Smymbol Msaximu Unit IVnput Supply Voltage -V0.3 to +16.5 CC OTperating Ambient Temperature Range -C40 to +85 A OTperating Junction Temperature Range -C40 to +125 J STtorage Temperature Range -C65 to +150 STG Thermal Impedance Junction to Ambient 9W5.7 C/ JA Thermal Impedance Junction to Case 6W1.7 C/ JC Power Dissipation at T=P25C 2W50 m A D LTead Temperature (Soldering) 10 seconds 3C00 LEAD EDSD Rating (Human Body Model) E2S kV Electricial Characteristics Unless otherwise specified, V = 5V, 0.5V V 2.5V, R1 = R2 = 1k +/- 0.1%. CC DDQ Specifications with standard typeface are for T = 25C, and limits in boldface type apply over the full operating temperature range J (T = -40C to +85C). A Psarameter Tnest Condition Mpi Txy Msa Unit Supply Voltage 351V (1) Load Regulation IL: 0 + 3A -1 % IL: 0 - 3A +1 QVuiescent Current/Standby Current=015V, no load = 0A 60 800 A CC FVB & REF Input Current =015V 1A0 n CC Gate Drive OIutput Low =52.5mA 0.1 0.25 V SINK OIutput High = 2.5mA Vcc -0.25VVcc -0.15 SOURCE Note: (1) For Load Regulation testing use a low duty cycle current pulse, when measuring VTT. www.semtech.com 2007 Semtech Corp. 2