RT9401C 6Bit VID Reference Generator General Description Features The RT9401C is digital to analog converter which generates a reference voltage for Intel VR10.x 6-bit VID code z Support 6bit DAC Voltage Conforming to Intel VRD10.x VID Table respectively. The part is proposed to pair with a series of Richtek’ s general purpose PWM controllers dedicated for the desktop microprocessor core power voltage regulation. The reference voltage is within 1% high accuracy. z 1% High Accuracy of VREF RoHS Compliant and 100% Lead (Pb)-Free RT9401C Package Type SP : SOP-8 (Exposed Pad-Option 1) Lead Plating System P : Pb Free G : Green (Halogen Free and Pb Free) Applications z z Desktop/Motherboard Microprocessor Core Power Regulation High Accuracy and Programmable Voltage Power Regulation Pin Configurations (TOP VIEW) Note : ` ` 8 VID1 Richtek products are : VID2 2 RoHS compliant and compatible with the current require- VID3 3 ments of IPC/JEDEC J-STD-020. VID4 4 VID125 Ordering Information z 9 VDA 7 VDD 6 VID0 5 GND Suitable for use in SnPb or Pb-free soldering processes. SOP-8 (Exposed Pad) Marking Information Typical Application Circuit RT9401C 1 2 3 4 VID1 VID2 VDA VID125 For marking information, contact our sales representative directly or through a Richtek distributor located in your area. VDD 8 C1 7 5V C2 VID3 VID0 VID4 GND 6 5 VTT DS9401C-03 April 2011 www.richtek.com 1 RT9401C Function Block Diagram VDD VID125 VID4 VID3 VID Input VID2 MUX VID1 + - VDA VID0 VREF Functional Pin Description Pin No. Pin Name Pin Function 1 VID1 DAC Voltage Identification Inputs. 2 VID2 DAC Voltage Identification Inputs. 3 VID3 DAC Voltage Identification Inputs. 4 VID4 DAC Voltage Identification Inputs. 5 GND Ground. 6 VID0 DAC Voltage Identification Inputs. 7 VDD Power Input Pin. 8 VDA Digital - to - Analog Voltage Output. Exposed Pad (9) VID125 www.richtek.com 2 DAC Voltage Identification Inputs. DS9401C-03 April 2011 RT9401C Absolute Maximum Ratings z z z z z z (Note 1) Supply Input Voltage, VDD ------------------------------------------------------------------------------------------- 7V Power Dissipation, PD @ TA = 25°C SOP-8 (Exposed Pad) ----------------------------------------------------------------------------------------------- 1.1W Package Thermal Resistance (Note 2) SOP-8 (Exposed Pad), θJA ------------------------------------------------------------------------------------------ 86°C/W Lead Temperature (Soldering, 10 sec.) --------------------------------------------------------------------------- 260°C Storage Temperature Range ---------------------------------------------------------------------------------------- −65°C to 150°C ESD Susceptibility (Note 3) HBM (Human Body Mode) ------------------------------------------------------------------------------------------ 2kV MM (Machine Mode) -------------------------------------------------------------------------------------------------- 200V Recommended Operating Conditions z z (Note 4) Supply Input Voltage, VDD ------------------------------------------------------------------------------------------- 5V ±10% Junction Temperature Range ---------------------------------------------------------------------------------------- −40°C to 125°C Electrical Characteristics (VDD = 5V, TA = 25°C, unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit -- 2 5 mA VDA ≥ 1V -1 -- +1 % VDA < 1V -10 -- +10 mV VID(4:0) &VID125 Input Low -- -- 0.4 V VID(4:0) &VID125 Input High 1.05 -- -- V 18 -- -- μA When select AMD CPU 2.2 2.4 2.5 V When select Intel CPU 1 1.1 1.2 V Capacitor Load Only -- 70 -- dB VDD Supply Current Nominal Supply Current IDD VDA open Referen ce & DAC Output Voltage Program See Table 1 DAC Output Voltage Accuracy VID[4:0] Internal Pull-High Current Source Capability VID[4:0] Internal Pull-High Voltage Output Buffer DC Gain Bandwidth GBW CL=1nF -- 1.64 -- MHz Slew Rate SR CL=0.1uF -- 9.5 -- mV/μs Impedance ROUT 60 -- 110 Ω DS9401C-03 April 2011 www.richtek.com 3 RT9401C Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibility to affect device reliability. Note 2. θJA is measured in the natural convection at T A = 25°C on a low effective thermal conductivity test board of JEDEC 51-3 thermal measurement standard. Note 3. Devices are ESD sensitive. Handling precaution recommended. Note 4. The device is not guaranteed to function outside its operating conditions. www.richtek.com 4 DS9401C-03 April 2011 RT9401C Table 1. Output Voltage Program (VR 10) Pin Name Nominal Output Voltage DACOUT VID4 VID3 VID2 VID1 VID0 VID125 1 1 1 1 1 X No CPU 0 1 0 1 0 0 0.8375V 0 1 0 0 1 1 0.850V 0 1 0 0 1 0 0.8625V 0 1 0 0 0 1 0.875V 0 1 0 0 0 0 0.8875V 0 0 1 1 1 1 0.900V 0 0 1 1 1 0 0.9125V 0 0 1 1 0 1 0.925V 0 0 1 1 0 0 0.9375V 0 0 1 0 1 1 0.950V 0 0 1 0 1 0 0.9625V 0 0 1 0 0 1 0.975V 0 0 1 0 0 0 0.9875V 0 0 0 1 1 1 1.000V 0 0 0 1 1 0 1.0125V 0 0 0 1 0 1 1.025V 0 0 0 1 0 0 1.0375V 0 0 0 0 1 1 1.050V 0 0 0 0 1 0 1.0625V 0 0 0 0 0 1 1.075V 0 0 0 0 0 0 1.0875V 1 1 1 1 0 1 1.100V 1 1 1 1 0 0 1.1125V 1 1 1 0 1 1 1.125V 1 1 1 0 1 0 1.1375V 1 1 1 0 0 1 1.150V 1 1 1 0 0 0 1.1625V 1 1 0 1 1 1 1.175V 1 1 0 1 1 0 1.1875V 1 1 0 1 0 1 1.200V 1 1 0 1 0 0 1.2125V To be continued DS9401C-03 April 2011 www.richtek.com 5 RT9401C Table 1. Output Voltage Program (VR 10) Pin Name Nominal Output Voltage DACOUT VID4 VID3 VID2 VID1 VID0 VID125 1 1 0 0 1 1 1.225V 1 1 0 0 1 0 1.2375V 1 1 0 0 0 1 1.250V 1 1 0 0 0 0 1.2625V 1 0 1 1 1 1 1.275V 1 0 1 1 1 0 1.2875V 1 0 1 1 0 1 1.300V 1 0 1 1 0 0 1.3125V 1 0 1 0 1 1 1.325V 1 0 1 0 1 0 1.3375V 1 0 1 0 0 1 1.350V 1 0 1 0 0 0 1.3625V 1 0 0 1 1 1 1.375V 1 0 0 1 1 0 1.3875V 1 0 0 1 0 1 1.400V 1 0 0 1 0 0 1.4125V 1 0 0 0 1 1 1.425V 1 0 0 0 1 0 1.4375V 1 0 0 0 0 1 1.450V 1 0 0 0 0 0 1.4625V 0 1 1 1 1 1 1.475V 0 1 1 1 1 0 1.4875V 0 1 1 1 0 1 1.500V 0 1 1 1 0 0 1.5125V 0 1 1 0 1 1 1.525V 0 1 1 0 1 0 1.5375V 0 1 1 0 0 1 1.550V 0 1 1 0 0 0 1.5625V 0 1 0 1 1 1 1.575V 0 1 0 1 1 0 1.5875V 0 1 0 1 0 1 1.600V Note: (1) 0 : Connected to GND (2) 1 : Open (3) X : Don't Care www.richtek.com 6 DS9401C-03 April 2011 RT9401C Typical Operating Characteristics VVDA vs. Temperature Error Between VVID & VVDA 0.35 0.35% 1.2 0.30% 0.30 VVID - VVDA (%) 1.201 VVDA (V) 1.199 1.198 1.197 1.196 0.25% 0.25 0.20% 0.20 0.15% 0.15 0.10% 0.10 0.05% 0.05 1.195 0.00% 0.00 -40 -20 0 20 40 60 80 100 120 140 Temperature (°C) VID on the Fly Falling VVDA = 1.3V to 1.0625V No Load 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 1.6 VVID (V) VID on the Fly Rising VVDA = 1.3V to 1.0625V No Load VDA (100mV/Div) VDA (100mV/Div) VID0 (5V/Div) VID0 (5V/Div) Time (50μs/Div) DS9401C-03 April 2011 Time (50μs/Div) www.richtek.com 7 RT9401C Outline Dimension H A M EXPOSED THERMAL PAD (Bottom of Package) Y J X B F C I D Dimensions In Millimeters Symbol Dimensions In Inches Min Max Min Max A 4.801 5.004 0.189 0.197 B 3.810 4.000 0.150 0.157 C 1.346 1.753 0.053 0.069 D 0.330 0.510 0.013 0.020 F 1.194 1.346 0.047 0.053 H 0.170 0.254 0.007 0.010 I 0.000 0.152 0.000 0.006 J 5.791 6.200 0.228 0.244 M 0.406 1.270 0.016 0.050 X 2.000 2.300 0.079 0.091 Y 2.000 2.300 0.079 0.091 X 2.100 2.500 0.083 0.098 Y 3.000 3.500 0.118 0.138 Option 1 Option 2 8-Lead SOP (Exposed Pad) Plastic Package Richtek Technology Corporation Richtek Technology Corporation Headquarter Taipei Office (Marketing) 5F, No. 20, Taiyuen Street, Chupei City 5F, No. 95, Minchiuan Road, Hsintien City Hsinchu, Taiwan, R.O.C. Taipei County, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611 Tel: (8862)86672399 Fax: (8862)86672377 Email: [email protected] Information that is provided by Richtek Technology Corporation is believed to be accurate and reliable. Richtek reserves the right to make any change in circuit design, specification or other related things if necessary without notice at any time. No third party intellectual property infringement of the applications should be guaranteed by users when integrating Richtek products into any application. No legal responsibility for any said applications is assumed by Richtek. www.richtek.com 8 DS9401C-03 April 2011