SC2596SETRT Semtech, SC2596SETRT Datasheet
SC2596SETRT
Specifications of SC2596SETRT
Available stocks
Related parts for SC2596SETRT
SC2596SETRT Summary of contents
Page 1
... Over current protection Available in SOIC8-EDP package Pb-free, Halogen free, and RoHS/WEEE compliant Applications DDR-I and DDR-II memory termination SSTL-2 and SSTL-3 termination HSTL termination PC motherboards Graphics boards Disk drives CD-ROM drives AVCC SC2596 EN VTT VDDQ VSENSE VREF PVCC VREF 0 1 SC2596 VTT www.semtech.com ...
Page 2
... 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 Electrical Characteristics (DDR-I) Unless otherwise specified - +125 © 2009 Semtech Corp θ θ 2.5V 2.5V DDQ SC2596 PRELIMINARY ...
Page 3
... Note: (1) Regulation is measured by using a load current pulse. (Pulse Width less than 10mS, Duty Cycle less than 2%, T Electrical Characteristics (DDR-II) Unless otherwise specified - +125 Note: (1) Regulation is measured by using a load current pulse. (Pulse Width less than 10mS, Duty Cycle less than 2%, T © 2009 Semtech Corp 2.5V 2.5V DDQ 3.3V 1.8V DDQ ...
Page 4
... PVCC PVCC EN EN VTT VTT Start up by EN. AVCC AVCC PVCC PVCC VTT VTT load © 2009 Semtech Corp. AVCC AVCC VDDQ//PVCC VDDQ//PVCC VREF VREF VTT VTT Shut down. Shut down by EN. AVCC AVCC PVCC//VDDQ PVCC//VDDQ VTT VTT ...
Page 5
... AVCC (V) Maximum Sourcing Current vs AVCC. (VDDQ=1.8V, PVCC=2.5V) 3.0 2.5 2.0 1.5 1.0 2 2 Maximum Sourcing Current vs AVCC. (VDDQ=1.8V, PVCC=1.8V) © 2009 Semtech Corp. 4.0 3.5 3.0 2.5 2 4.5 5 5.5 4.0 3.5 3.0 2.5 2.0 4 SC2596 2 ...
Page 6
... VSENSE 3 6 VREF 4 5 (SOIC8-EDP) © 2009 Semtech Corp. Ordering Information Part Number SC2596SETRT (1) SC2596EVB (2) VTT Notes: PVCC (1) Only available in tape and reel packaging. A reel contains 2500 devices for SOIC8-EDP. AVCC (2) EVB provided with SOIC8-EDP package. VDDQ (3) Pb-free, Halogen free, and RoHS/WEEE compliant. ...
Page 7
... POWER MANAGEMENT Pin Descriptions © 2009 Semtech Corp SC2596 www.semtech.com ...
Page 8
... It is used as the reference voltage to the Error amp. A 100nF or higher capacitor is recommended for VREF pin to ground; To enhance the noise immunity from board, an additional pull-down resistor (1MΩ) is recomanded as well from VREF pin to ground. © 2009 Semtech Corp. Anti- UVLO + Shoot- Thermal thru ...
Page 9
... VSENSE pin is a feedback pin from VTT plane. VTT plane is always a narrow and long strip plane in most montherboard applications. This long strip plane will © 2009 Semtech Corp. cause a large trace inductance and trace resistance. Consider the load transient condition, a fast load cur- ...
Page 10
... The preferred configuration for DDR-I applications is to tie AVCC and PVCC to VDDQ, which is typically 2.5V. (b) If AVCC and PVCC rails are tied together, then the VDDQ cannot lead the AVCC and PVCC. © 2009 Semtech Corp. Application_4: High Source Current Configuration ...
Page 11
... VTT output copper plane should be as large as possible. A 4.7uF to 10 decouple the VTT pin. 5) The trace between VSENSE pin and VTT rail should be as short as possible and put a 10nF ~100nF capacitor close this vsense pin. © 2009 Semtech Corp. Phase Margin vs External ESR 120.00 100.00 80 ...
Page 12
... POWER MANAGEMENT Typical Application Circuit VDDQ 1.8V EN VREF R1 C1 0.9V 1M Bill of Material © 2009 Semtech Corp. U1 SC2596 1 8 GND VTT PVCC 3 6 VSENSE AVCC 4 5 VREF VDDQ C2 0 DDR-II VTT Solution SC2596 PRELIMINARY VTT 0.9V 3. 1uF 1uF www.semtech.com ...
Page 13
... POWER MANAGEMENT Outline Drawing - SOIC8-EDP © 2009 Semtech Corp. 13 SC2596 www.semtech.com ...
Page 14
... POWER MANAGEMENT Land Pattern - SOIC8-EDP Contact Information © 2009 Semtech Corp. Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 14 SC2596 PRELIMINARY www.semtech.com ...