W83310U

W inbond Bus Termination Regulator W83310U W83310UG W83310U, W83310UG W83310U Data Sheet Revision History PAGES DATES VERSION VERSION ON WEB MAIN CONTENTS 1. 2. 3 4 03/Mar. 04/Feb. 05/Mar. 06/Jan. 0.5 0.51 0.6 0.7 N.A. N.A. N.A N.A All versions before 0.5 are for internal use only Add the thermal data inside Update the package dimension data. Add pb-free part no:W83310UG 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, 2006 Revision 0.7 W83310U, W83310UG Table of Contents1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 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 (TO252-5L).......................................................................................... 8 THERMAL PERFORMANCE...................................................................................................... 9 ORDERING INFORMATION ...................................................................................................... 9 HOW TO READ THE TOP MARKING........................................................................................ 9 -II- W83310U, W83310UG 1. GENERAL DESCRIPTION The W83310U is a linear regulator which provides achieves continuous 2.0 Amp bi-directional 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 W83310U is promoted with TO252 power package. With W83310U 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 continuous 2.0Amp driving and sinking current Power MOSFET integrated Low external component count Low output voltage offset Operates with +3.3V and +2.5V control power Power package TO252-5L Low cost and easy to use 3. APPLICATIONS DDR and DDR II Bus Termination Regulator Active Termination Bus SSTL-2 SSTL-3 -1- Publication Release Date: January 17, 2006 Revision 0.7 W83310U, W83310UG 4. PIN CONFIGURATION AND DESCRIPTION inbond W83310U 1 2 GND 3 VCTRL 4 VREF 5 VOUT FUNCTION SYMBOL PIN VIN GND VCNTL VREF VOUT 1 2 3 4 5 VIN Power input pin. Ground. Gate drive voltage. Reference voltage and Chip enable. Output voltage. -2- W83310U, W83310UG 5. APPLICATION CIRCUIT 2.5V 3.3V 2.5V U1 C1 1u R1 10K 1 C2 1000u 2 3 4 VIN GND VCNTL(TAB) VREF VOUT W83310U 3 Q1 ENABLE# 1 2N7002 2 R3 10K C3 1u C4 1u 5 C5 1500u -3- Publication Release Date: January 17, 2006 Revision 0.7 W83310U, W83310UG 6. INTERNAL BLOCK DIAGRAM - W83310U VCNTL VIN VREF Control Logic Circuit VOUT GND -4- W83310U, W83310UG 7. ELECTRICAL CHARACTERISTICS 7.1 AC CHARACTERISTICS W83310U 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 1.62 2.5 3.3 0.5 3.63 3.63 1.0 V mA V No Load(IOUT=0A) Output=High Output=Low VREF