W83310S-R2

W inbond B us Termination Regulator W 83310S-R2 W 83310G-R2 W83310S-R2/W83310G-R2 W83310S-R2 Data Sheet Revision History PAGES DATES VERSION VERSION ON WEB MAIN CONTENTS 1 2 3 4 N.A. 4 All 1,2 03/Mar. 03/Jul. 05/Jan. 06/Jan. 0.5 0.51 0.52 0.53 N.A. N.A. N.A N.A All versions before 0.5 are for internal use only Recommend circuit update Add Pb-free part no:W83310G-R2 Add description of supporting cont. 1.8 Amp driving and sinking current. Please note that all data and specifications are subject to change without notice. All the trademarks of products and companies mentioned in this datasheet belong to their respective owners. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Winbond customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Winbond for any damages resulting from such improper use or sales. -I- Publication Release Date: January 17, 2005 Revision 0.53 W83310S-R2/W83310G-R2 Table of Contents1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. GENERAL DESCRIPTION ......................................................................................................... 1 FEATURES ................................................................................................................................. 1 APPLICATIONS .......................................................................................................................... 1 PIN CONFIGURATION AND DESCRIPTION ............................................................................ 2 APPLICATION CIRCUIT............................................................................................................. 3 INTERNAL BLOCK DIAGRAM ................................................................................................... 4 ELECTRICAL CHARACTERISTICS........................................................................................... 5 7.1 AC CHARACTERISTICS................................................................................................ 5 TYPICAL OPERATING WAVEFORM......................................................................................... 6 PACKAGE DIMENSION ............................................................................................................. 8 ORDERING INFORMATION ...................................................................................................... 9 HOW TO READ THE TOP MARKING........................................................................................ 9 -II- W83310S-R2/W83310G-R2 1. GENERAL DESCRIPTION The W83310S-R2 is a linear regulator which provides achieves peak 2.0 Amp/cont. 1.8 Amp bidirectional sinking and driving capability for DDR SDRAM bus terminator application. The chip simply implement a stable power supply which can track half of input power dynamically for bus terminator with a single chip; that is the chip integrates two power MOSFETs. There is no any external power device needed. The W83310S-R2 is promoted with small footprint 8-SOP 150mil package. With W83301S-R2 design, a high integration, high performance, and cost-effective solution is promoted. 2. FEATURES Regulates a bi-directional power with driving and sinking capability Provides achieve peak 2.0 Amp/cont. 1.8 Amp driving and sinking current Power MOSFET integrated Low external component count Low output voltage offset Operates with +3.3V and +2.5V control power Small package Low cost and easy to use 3. APPLICATIONS DDR Bus Termination Regulator Active Termination Bus SSTL-2 SSTL-3 -1- Publication Release Date: January 17, 2005 Revision 0.53 W83310S-R2/W83310G-R2 4. PIN CONFIGURATION AND DESCRIPTION - W83310S-R2 VIN GND VREF VOUT 1 2 3 4 8 VCNTL I inbond 7 VCNTL 6 VCNTL 5 VCNTL W83310S-R2 SYMBOL PIN FUNCTION VIN GND VREF VOUT VCNTL VCNTL VCNTL VCNTL 1 2 3 4 5 6 7 8 Power input pin. Ground. Reference voltage and Chip enable. Output voltage. Gate drive voltage. Gate drive voltage. Gate drive voltage. Gate drive voltage. -2- W83310S-R2/W83310G-R2 5. APPLICATION CIRCUIT 2.5V 3.3V U1 1 R1 10KΩ C1 1000u 2 VIN VCNTL 8 GND VCNT 7 3.3V 3 Q 3 VREF R2 2N70 VCNT 6 Enabl 1 2 C2 1u C3 1u 10KΩ 4 VOUT VCNT 5 L C4 W83310S1500u R2 C5 1u -3- Publication Release Date: January 17, 2005 Revision 0.53 W83310S-R2/W83310G-R2 6. INTERNAL BLOCK DIAGRAM - W83310S-R2 VCNTL VIN VREF Control Logic VOUT GND -4- W83310S-R2/W83310G-R2 7. ELECTRICAL CHARACTERISTICS 7.1 AC CHARACTERISTICS W83310S-R2 VIN=2.5V,VCNTL=3.3V,VREF=1.25V,Cout=100uF, TA = 0°C to +70°C PARAMETER SYMBOL MIN TYP MAX UNITS TEST CONDITIONS Output Offset Voltage Load Regulation VOS -5 0 1.0 1.0 +5 mV % IOUT=0A Loading: 0A 2.0A Loading: 2.0A 0A - Input Voltage Range Operating Current of VCNTL Shutdown Threshold Trigger Shutdown Current Short Current Limit VIN VCNTL ICNTL 0.8 2.5 3.3 0.5 3.63 3.63 1.0 V mA V No Load(IOUT=0A) Output=High Output=Low VREF