AP1128DA

AP1128 3A Bus Terminator Regulator Features - Ideal for DDR-I and DDR-II applications - Capable of sourcing and sinking current 1.5A/3A - Current limiting protection - Thermal protection - Current-shoot-through protection - High accuracy output voltage at full load - Minimum external components - Adjustable VOUT by external resistors - Shutdown for standby or suspend mode operation with high-impedance output - TO252-5 and SOP-8 Pb-free Package General Description AP1128 is a linear regulator designed as a cost-effective solution for active termination of DDR SDRAM. The converting voltage range is from 1.6V to 6V into a desired output voltage, which is adjusted by two external resistors. The current sourcing and sinking capability of the regulator is up to 1.5A/3A while the output voltage within 2%/3%. This device provides on-chip thermal shutdown and current limit functions for circuit tolerance of the output fault conditions. SO-8 and TO-252-5L packages are available for all commercial and industrial surface mount applications. Applications - Mother Board DDR-SDRAM Termination - Mother Board DDR-II Termination - Game / Play Station - Set Top Box - PCI / AGP Graphics - IPC - SCSI-III Bus Termination Pin Assignment ( Top View ) 5 4 3 2 1 VOUT VREFEN VCNTL(TAB) GND VIN Pin Descriptions Pin Name VIN VCNTL VREFEN GND VOUT Descriptions Power Input Gate Drive Voltage Reference Voltage Input and Chip Enable Ground Output Voltage TO252-5L (Top View) VIN GND VREFEN VOUT 1 2 3 4 8 7 6 5 VCNTL VCNTL VCNTL VCNTL SOP-8L This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. Rev.1.0 Jul 20, 2005 1/7 AP1128 3A Bus Terminator Regulator Ordering Information AP1128 X X Package D: TO252-5 S: SOP-8 Packing Blank : Tube A : Taping Block Diagram VCNTL VIN Cuurent Limiting Sensor VREFEN Thermal GND CNTL VOUT Typical Circuit U1 VIN = 2.5V C1 470uF R1 100K AP1128 VCNTL 8 CCNTL 47uF VCNTL = 3.3V 1V IN 2 GND 3V REFEN 4 VOUT VCNTL 7 VCNTL 6 VCNTL 5 VOUT = 1.25V R2 100K EN C2 1000uF C3 10uF Absolute Maximum Ratings Symbol VIN PD TSTG TLead θJC θJA Parameter Power Input Voltage Power Dissipation HBM ESD Rating Storage Temperature Lead Temperature (Soldering 5 sec) Thermal Resistance Thermal Resistance SOP-8 (Note 3) TO252-5 SOP-8 TO252-5 Rating Unit 6 V internal limited 3 KV o -55 to 150 C o 260 C 20 o C/W 6 80 o C/W 40 Anachip Corp. www.anachip.com.tw 2/7 Rev.1.0 Jul 20, 2005 AP1128 3A Bus Terminator Regulator Electrical Characteristics VIN = +2.5V, VCNTL = +3.3V, VREFEN = +1.25V, COUT = 10uF (Ceramic) Symbol VOS VIN VCNTL ICNTL ISHDN Parameter Output Offset Voltage (Note 1) ∣∆VLOAD∣ Load Regulation Input Voltage Range (DDR I/II) (Note2) Gate Drive Voltage Range (Note2) Operation Current of VCNTL Current in Shutdown IQ Quiescent Current Short Circuit Protection ILIMIT Current Limit Over Temperature Protection TOS Thermal Shutdown Temperature Shutdown Function Shutdown Threshold Trigger Shutdown Threshold Trigger Conditions IOUT=0A IL: 0A --> 1.5A IL: 0A --> -1.5A VCNTL ≥ VIN VCNTL ≥ VIN IOUT = 0A VREFEN < 0.2V, RL=180Ω IOUT=0A SOP-8 TO-252 3.3V ≤ VCNTL ≤ 5V Output = High Output = Low Min. -20 1.6 0.8 - Typ. -5 0.5 0.5 2.5/1.8 3.3 3 10 1 2 3 140 - Max. 20 2 2 6 6 90 3 0.2 Unit mV % V V mA uA mA A o C V Note 1: VOS is the voltage measurement VOUT subtracted from VREFEN. Note 2: Keep VCNTL ≥ VIN at power on/off sequences. 2 Note 3: Surface mounted on 1 in copper pad of FR4 board Typical Performance Characteristics 1.30 1.28 1.30 1.28 VOUT (V) VOUT (V) 1.26 1.24 1.22 1.20 1.5 1.6 1.7 1.26 1.24 1.22 1.20 VIN (V) 1.9 2.1 2.3 2.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 VCNTL (V) Fig 1. Line Regulation ( VIN v.s. VOUT ) 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 Fig 2. Line Regulation ( VCNTL v.s. VOUT ) ICNTL (mA) VCNTL (V) Fig 3. Line Regulation ( VCNTL v.s. ICNTL ) Anachip Corp. www.anachip.com.tw 3/7 Rev.1.0 Jul 20, 2005 AP1128 3A Bus Terminator Regulator Typical Performance Characteristics (Continued) Fig 4. Output Short-Circuit Protection Fig 5. Output Short-Circuit Protection Output Transient Voltage VREFER=1.25V 1.5A Output Current -1.5A VIN=2.5V, VCNTL=3.3V, VREFER=1.25V, Temp(IC Body) = 98oC Fig 7. Transient Response Output Transient Voltage VREFER=0.9V 1.5A Output Current -1.5A VIN=1.8V, VCNTL=3.3V, VREFER=0.9V Fig 8. Transient Response Anachip Corp. www.anachip.com.tw 4/7 Rev.1.0 Jul 20, 2005 AP1128 3A Bus Terminator Regulator Typical Performance Characteristics (Continued) Fig 9. Safe Operating Area Marking Information ( Top View ) (Top View) Logo Part Number 8 Logo ID Code Xth Week: 01~52 Year: "01" = 2001 "02" = 2002 5 1128 XXXX X Part No. AP1128 YY WW X 1 4 ID code: internal Xth week: 01~52 Year: "01" =2001 "02" =2002 ~ ~ (TO252-5) (SOP-8) Anachip Corp. www.anachip.com.tw 5/7 Rev.1.0 Jul 20, 2005 AP1128 3A Bus Terminator Regulator Package Information (1) Package Type: TO252-5 A B 5.6 5.6 C 11.0 M D 2.0 7.2 1.27 0.6 L P(TYP.) S G Land Pattern Recommendation (Unit: mm) K Symbol A B C D P S G H J K L M Dimensions In Millimeters Min. Nom. Max. 6.35 6.60 6.85 5.20 5.35 5.50 6.80 7.00 7.30 2.20 2.50 2.80 1.27 REF. 0.50 0.65 0.80 0.40 0.50 0.63 2.20 2.30 2.40 0.45 0.52 0.58 0.00 0.08 0.15 0.90 1.20 1.63 5.40 5.80 6.20 Dimensions In Inches Min. Nom. Max. 0.250 0.260 0.270 0.205 0.211 0.217 0.268 0.276 0.287 0.087 0.098 0.110 0.050 REF. 0.020 0.026 0.031 0.016 0.020 0.025 0.087 0.091 0.094 0.018 0.020 0.023 0.000 0.003 0.006 0.035 0.047 0.064 0.213 0.228 0.244 Anachip Corp. www.anachip.com.tw 6/7 J H Rev.1.0 Jul 20, 2005 AP1128 3A Bus Terminator Regulator Package Information (Continued) (2) Package Type: SOP-8 E H L VIEW "A" D 7 (4X) A2 A 0.015x45 7 (4X) A1 e B y C VIEW "A" Symbol A A1 A2 B C D E e H L y θ Dimensions In Millimeters Min. Nom. Max. 1.40 1.60 1.75 0.10 0.25 1.30 1.45 1.50 0.33 0.41 0.51 0.19 0.20 0.25 4.80 5.05 5.30 3.70 3.90 4.10 1.27 5.79 5.99 6.20 0.38 0.71 1.27 0.10 0o 8o Dimensions In Inches Min. Nom. Max. 0.055 0.063 0.069 0.040 0.100 0.051 0.057 0.059 0.013 0.016 0.020 0.0075 0.008 0.010 0.189 0.199 0.209 0.146 0.154 0.161 0.050 0.228 0.236 0.244 0.015 0.028 0.050 0.004 0o 8o Anachip Corp. www.anachip.com.tw 7/7 Rev.1.0 Jul 20, 2005