AME9172

AME, Inc. AME9172 n General Description The AME9172 is a voltage regulator which could convert the input voltage ranging from 1.3V to 6V to an output voltage that user settled. The regulator can provide sourcing or sinking current. The AME9172 used in conjunction with series termination resistors, provides an excellent voltage source for active termination schemes of high speed transmission lines as those seen in high speed memory buses and distributed backplane designs. The voltage output of the regulator can be used as a termination voltage for DDR SDRAM. Current limits in both sourcing and sinking mode, plus on-chip thermal shutdown make the circuit tolerant of the output fault conditions. Bus Termination Regulator n Features l Support Both DDR 1 (1.25VTT), DDR 2 (0.9VTT) & DDR 3 (0.75VTT) Requirements l Capable of Sourcing and Sinking Current l Current-limiting Protection l Thermal Protection l Integrated Power MOSFETs l Generates Termination Voltages for SSTL-2 l High Accuracy Output Voltage at Full-Load l Adjustable VOUT by External Resistors l Minimum External Components l Shutdown for Standby or Suspend Mode Operation with High-impedance Output l All AME’s Lead Free Products Meet RoHS Standards n Applications l DDR Memory Termination Supply l Active Termination Buses l Desktop PC/AGP Graphics l Supply Splitters l Set Top Box/IPC 1 Rev. A.01 AME, Inc. AME9172 n Block Diagram VCNTL VIN Bus Termination Regulator Thermal Sensor Thermal + - VOUT & Over Current REFEN Protection circuit + - VCNTL GND 2 Rev. A.01 AME, Inc. AME9172 n Application Circuit Bus Termination Regulator DDR_2.5V AME9172AAHAZ SOP-8 VIN GND REF VOUT VCNT VCNT VCNT VCNT VCC_3V 1 R2 100K C4 0.1µ C2 470µ 8 7 6 5 DDR_VTT 1.25V/1.5A 2 3 4 R4 100K C8 4.7u C6 470u AME9172AAHAZ SOP-8 Fig 1 : Application Circuit AME9172AAHAZ DDR_2.5V 1 C3 R1 0.1µ C4 470µ AME9172AAZAZ SOP-8/PP VCC_3V VIN GND_PAD NC NC VCNT NC 8 7 6 5 DDR_VTT 1.25V/2A 2 3 4 GND REF VOUT 100K R3 100K C7 4.7µ C5 470 µ AME9172AAZAZ SOP-8/PP Fig 2 : Application Circuit AME9172AAZAZ 3 Rev. A.01 AME, Inc. AME9172 n Pin Configuration Part Number Pin Configurations Bus Termination Regulator VIN AME9172AAHAZ (SOP-8) 1 2 3 8 7 6 5 VCNTL VCNTL VCNTL VCNTL GND REFEN VOUT 4 AME9172 Pin Assignment Part Number Pin Configurations AME9172AAZAZ (SOP-8/PP) VIN GND REFEN VOUT 1 2 3 4 8 7 6 5 NC NC VCNTL NC NC= No internal connection = Thermal Pad (Connected to GND plane for better heat dissipation). The Pad of dimension is 0.090 x 0.090 (Inch) AME9172 Pin Assignment 4 Rev. A.01 AME, Inc. AME9172 n Ordering Information AME9172 xxxxx Special Feature Number of Pins Package Type Operating Ambient Temperature Range Pin Configuration Operating Ambient Temperature Range A: -25OC to 85OC Number of Pins A: 8 Bus Termination Regulator Pin Configuration Package Type Special Feature A: 1. VIN (SOP-8) 2. GND H: SOP Z: SOP/PP Z: Lead free 3. 4. 5. 6. 7. 8. REF VOUT VCNT VCNT VCNT VCNT A: 1. VIN (SOP-8/PP) 2. GND 3. REF 4. VOUT 5. NC 6. VCNT 7. NC 8. NC n Ordering Information Part Number AME9172AAHAZ Marking* 9172 AAHA yyww 9172 AAZA yyww Output Voltage N/A Package SOP-8 Operating Ambient Temperature Range -25oC to 85oC AME9172AAZAZ N/A SOP-8/PP -25oC to 85oC Note: yyww represents the date code. * A line on top of the first letter represents lead free plating such as 9172 Please consult AME sales office or authorized Rep./Distributor for package type availability. 5 Rev. A.01 AME, Inc. AME9172 n Pin Description Pin name VIN GND VCNTL REFEN VOUT Power Input Ground Driving Voltage Input voltage reference & chip enable Output Voltage Bus Termination Regulator Pin Description 6 Rev. A.01 AME, Inc. AME9172 n Absolute Maximum Ratings Symbol VIN PD VESD TSTG TL Bus Termination Regulator Parameter Input Voltage. VIN to GND Power Disspation ESD Rating (Human Body Mode) Storage Temperature Lead Temperature (Soldering. 5sec) Rating 6 Internally Limit 2 150 245 Unit V W KV O C C O n Thermal Characteristics Symbol Parameter Thermal Resistance In Case θJC SOP-8 SOP-8/PP 25.7 12 O Symbol Unit C/W n Recommended Operating Conditions Symbol VIN VCNT *IOUT TJ Parameter Supply Voltage to VIN Supply Voltage to VCNT Output Current of VOUT Pin * Junction Temperature Rating 1.5 to 3.3 3.3 -2 to 2 -25 to 125 Unit V V A o C * The symbol "+" means the VOUT sources current to load; the symbol "-" means the VOUT sinks current to GND 7 Rev. A.01 AME, Inc. AME9172 n Electrical Specifications Limits in standard typeface are for TA = 25℃, unless otherwise specified: DDR1 => VIN = 2.5V, VCNTL = 3.3V, VREFEN = 0.5VIN. (Note2) Parameter Output Offset Voltage Load Regulation (DDR 1 / 2 / 3) Symbol VOS VLOAD Test Condition IOUT = 0A (Note 1) IL = 0 to 1.5A (Fig 4) IL = 0 to -1.5A DDR 1 Input Voltage Range (DDR 1 / 2 / 3) VIN Keep VCNTL ≥ VIN on operation power on and power off No Load DDR 2 DDR 3 DDR 1 / 2 / 3 Min -20 -20 -20 1.8 1.6 1.3 2.5 Typ 0 0 0 2.5 1.8 1.5 3.3 1.4 Max 20 20 20 4 4 4 6 mA V mV Units mV Bus Termination Regulator VCNTL Operating Current of VCNTL Short Circuit Protection DDR 1 / 2 / 3 Current Limit Over Temperature Protection Thermal Shutdown Temperature Thermal Shutdown Hysteresis ICNTL ILIMIT Fig 6,7 2.0 A TSD 3.3V ≤ VCNTL≤ 5 V Guaranteed by design 125 o C 30 Note1: VOS offset is the voltage measurement defined as VOUT subtracted from VREFEN. Note2: DDR3 => VIN = 1.5V, VCNTL = 3.3V, VREFEN = 0.5VIN 8 Rev. A.01 AME, Inc. AME9172 n Test Circuit Bus Termination Regulator Fig 4: Output Voltage Tolerance, △ VOUT Fig 5: Current in Shutdown Mode, ISHDN 9 Rev. A.01 AME, Inc. AME9172 Bus Termination Regulator Figure 6: Current Limit for High Side, ICLHIGH Figure 7: Current Limit for Low Side, ICLLOW 10 Rev. A.01 AME, Inc. AME9172 n Typical Characteristics Bus Termination Regulator 11 Rev. A.01 AME, Inc. AME9172 n Operation Waveforms DDR1 Load Transient Response VIN=2.5V, VCNTL =3.3V VREF is 1.25V supplied by a regulator COUT=1000µF/35V IOUT slew rate = +-0.25A/mS + 0 A → + 1.5 A → + 0 A +0A → +2A → + 0A + 0 A → + 2.5 A → + 0 A Bus Termination Regulator Ch1= IOUT , Ch4= VOUT Ch1= IOUT , Ch4= VOUT Ch1= IOUT , Ch4= VOUT Load Transient Response VIN=2.5V, VCNTL =3.3V VREF is 1.25V supplied by a regulator COUT=1000µF/35V IOUT slew rate = +-0.25A/mS - 0 A → - 1.5 A → - 0 A -0A → - 2A → - 0A - 0 A → - 2.5 A → - 0 A Ch1= IOUT , Ch4= VOUT 12 Ch1= IOUT , Ch4= VOUT Ch1= IOUT , Ch4= VOUT Rev. A.01 AME, Inc. AME9172 n Operation Waveforms DDR3 Load Transient Response VIN=1.5V, VCNTL =3.3V VREF is 0.75V supplied by a regulator COUT=1000µF/35V IOUT slew rate = +-0.25A/mS + 0 A → + 1.5 A → + 0 A +0A → +2A → + 0A Bus Termination Regulator Ch1= IOUT , Ch4= VOUT Ch1= IOUT , Ch4= VOUT Load Transient Response VIN=1.5V, VCNTL =3.3V VREF is 0.75V supplied by a regulator COUT=1000µF/35V IOUT slew rate = +-0.25A/mS - 0 A → - 1.5 A → - 0 A -0A → -2A → - 0A Ch1= IOUT , Ch4= VOUT 13 Ch1= IOUT , Ch4= VOUT Rev. A.01 AME, Inc. AME9172 n Tape and Reel Dimension SOP-8 P Bus Termination Regulator PIN 1 W AME AME Carrier Tape, Number of Components Per Reel and Reel Size Package SOP-8 Carrier Width (W) 12.0±0.1 mm Pitch (P) 4.0±0.1 mm Part Per Full Reel 2500pcs Reel Size 330±1 mm SOP-8/PP P PIN 1 W AME AME Carrier Tape, Number of Components Per Reel and Reel Size Package SOP-8/PP Carrier Width (W) 12.0±0.1 mm Pitch (P) 4.0±0.1 mm Part Per Full Reel 2500pcs Reel Size 330±1 mm 14 Rev. A.01 AME, Inc. AME9172 n Package Dimension SOP-8 SYMBOLS Top View Side View C Bus Termination Regulator MILLIMETERS MIN MAX 1.75 0.30 INCHES MIN 0.05315 MAX 0.0689 A A1 A2 1.35 0.10 0.00394 0.01181 0.05799 REF 0.01299 0.02008 0.00748 0.00984 0.18898 0.20984 0.14961 0.15748 0.05000 BSC 0.01575 0.05000 0.22835 0.24803 0 o 1.473 REF 0.33 0.19 4.80 3.80 0.51 0.25 5.33 4.00 H E B C D D θ Front View 7o(4X) L E e L H y θ 1.27 BSC 0.40 5.80 0 o 1.27 6.30 0.10 8 o A2 A 0.00394 8o B SOP-8/PP SYMBOLS A A1 A2 C E E1 L b D e θ MILLIMETERS MIN 0.050 1.350 0.100 3.750 5.700 0.300 0.310 4.720 A1 e INCHES MIN 0.002 0.053 0.004 0.148 0.224 0.012 0.012 0.186 MAX 1.700 0.150 1.550 0.250 4.150 6.300 0.700 0.510 5.120 MAX 0.067 0.006 0.061 0.010 0.163 0.248 0.028 0.020 0.202 1.270 BSC 0 o 0.05 BSC o 8 0o 8o 15 Rev. A.01 www.ame.com.tw E-Mail: sales@ame.com.tw Life Support Policy: These products of AME, Inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president of AME, Inc. AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. © AME, Inc. , September 2007 Document: 5007-DS9172-A.01 Corporate Headquarter AME, Inc. 2F, 302 Rui-Guang Road, Nei-Hu District Taipei 114, Taiwan. Tel: 886 2 2627-8687 Fax: 886 2 2659-2989 U.S.A (Subsidiary) Analog Microelectronics, Inc. 3100 De La Cruz Blvd., Suite 201 Santa Clara, CA. 95054-2046 Tel : (408) 988-2388 Fax: (408) 988-2489