AMC1117 1A LOW DROPOUT POSITIVE REGULATOR www.addmtek.com DESCRIPTION FEATURES The AMC1117 series of positive adjustable and fixed regulators is designed to provide 1A for applications requiring high efficiency. All internal circuitry is designed to operated down to 800mV input to output differential and the dropout voltage is fully specified as a function of load current. The AMC1117 offers current limiting and thermal protection. The on chip trimming adjusts the reference voltage accuracy to 1%. Output current of 1A typical Three-terminal adjustable or fixed 1.5V, 1.8V, 2.5V, 3.3V, 5.0V outputs Low dropout of typical 800mV Thermal protection built in Typical 0.015% line regulation Typical 0.01% load regulation Fast transient response Available in SOT-223 and TO-252 packages Pin assignment identical to earlier LT1117 series. APPLICATIONS PACKAGE PIN OUT 2.85V Model for SCSI-2 Active Termination Battery Charger High Efficiency Linear Regulators Battery Powered Instrumentation Post Regulator for Switching DC/DC Converter 3. VIN 2. VOUT 1. ADJ/GND 3-Pin Plastic SOT-223 Surface Mount (Top View) VOLTAGE OPTIONS AMC1117-1.5 AMC1117-1.8 AMC1117-2.5 AMC1117-3.3 AMC1117-5.0 AMC1117 – 1.5V Fixed – 1.8V Fixed – 2.5V Fixed – 3.3V Fixed – 5.0V Fixed – Adjustable Output 3. VIN 2. V out 1. ADJ/GND 3-Pin Plastic TO-252 Surface Mount (Top View) ORDER INFORMATION TA (OC) 0 to 70 Note: SK SOT-223 3-pin SJ TO-252 3-pin AMC1117-X.XSKF (Lead Free) AMC1117-X.XSJF (Lead Free) AMC1117SKF (Lead Free) AMC1117SJF (Lead Free) 1.All surface-mount packages are available in Tape & Reel. 2.The letter “F” is marked for Lead Free process. Copyright © 2006 ADDtek Corp. Append the letter “T” to part number (i.e. AMC1117-X.XSJT). 1 DD004_K -- JULY 2006 AMC1117 BLOCK DIAGRAM VIN VOUT ADJ For Fixed Output Options GND Copyright © 2006 ADDtek Corp. 2 DD004_K -- JULY 2006 AMC1117 ABSOLUTE MAXIMUM RATINGS (Note1) 7V 0 OC to 150 OC -65 OC to 150 OC 260 OC Input Voltage Operating Junction Temperature Range, TJ Storage Temperature Range Lead Temperature (soldiering, 10 seconds) Note 1: Exceeding these ratings could cause damage to the device. out of the specified terminal. Package θJA (OC /W ) SKF SJF 136 80 All voltages are with respect to Ground. Currents are positive into, negative POWER DISSIPATION TABLE TA=70 OC Derating factor ( mW/ OC) TA≤ 25 OC TA≥ 25 OC Power rating(mW) Power rating(mW) 7.35 12.5 919 1562 TA= 85 OC Power rating (mW) 588 1000 478 812 Note : 1. θJA: Thermal Resistance-Junction to Ambient, DF : Derating factor, Po: Power consumption. Junction Temperature Calculation: TJ = TA + (PD × θJA), Po = DF × (TJ- TA) The θJA numbers are guidelines for the thermal performance of the device/PC-board system. All of the above assume no ambient airflow. 2. θJT: Thermal Resistance-Junction to Tab, TC: case(Tab) temperature, TJ = TC + (PD × θJT) For SK package, θJT = 15.0 OC /W. For SJ package, θJT = 7.0 OC /W. RECOMMENDED OPERATING CONDITIONS Recommended Operating Conditions Parameter Symbol Min. Typ. Max. Input Voltage VIN 2.7 7 Load Current (with adequate heat sinking) IO 5 Input Capacitor (VIN to GND) 10 Output Capacitor with ESR of 10Ω max., (VOUT to GND) 10 Junction temperature Copyright © 2006 ADDtek Corp. TJ 3 125 DD004_K -- Units V mA µF µF O C JULY 2006 AMC1117 ELECTRICAL CHARACTERISTICS Unless otherwise specified, IO =10mA, and TJ = 25 OC. Parameter Reference Voltage Symbol AMC1117 1.250 1.262 10mA ≤ IO ≤ 1A, 2.65V ≤ VIN ≤ 7V 1.225 1.250 1.275 IO = 10mA, VIN = 3.0V 1.485 1.500 1.515 10mA ≤ IO ≤ 1A, 3.0V ≤ VIN ≤ 7V 1.470 1.500 1.530 IO = 10mA, VIN = 3.3V 1.782 1.8 1.818 10mA ≤ IO ≤ 1A, 3.3V ≤ VIN ≤ 7V 1.764 1.8 1.836 IO = 10mA, VIN = 4.0V 2.475 2.500 2.525 10mA ≤ IO ≤ 1A, 4.0V ≤ VIN ≤ 7V 2.450 2.500 2.550 IO = 10mA, VIN = 4.8V 3.267 3.300 3.333 10mA ≤ IO ≤ 1A, 4.8V ≤ VIN ≤ 7V 3.235 3.300 3.365 IO = 10mA, VIN = 6.5V 4.950 5.000 5.050 10mA ≤ IO ≤ 1A, 6.5V ≤ VIN ≤ 7V 4.900 5.000 5.100 IO = 10mA, VOUT +1.5V ≤ VIN ≤ 7V 0.04 0.20 % IO = 10mA, VOUT +1.5V ≤ VIN ≤ 7V 1.0 6.0 mV 10mA ≤ IO ≤ 1A, VIN = VOUT +1.5V 0.10 0.40 % 10mA ≤ IO ≤ 1A, VIN = VOUT +1.5V 1.0 10.0 mV IO = 10mA, VIN≧2.65V 0.8 1.15 IO = 500mA, VIN≧2.65V 0.8 1.25 IO = 1A, VIN≧2.65V 0.8 1.30 VIN ≤ 7V 2 7 mA IQ VIN ≤ 7V 6 13 mA ICL VIN – VOUT = 3V VOUT AMC1117-3.3 AMC1117-5.0 AMC1117 Line Regulation AMC1117-X.X ∆VOI AMC1117 Load Regulation AMC1117-X.X ∆VOL ∆V Dropout Voltage Minimum Load Current Quiescent Current (Note 1) AMC1117-X.X Current Limit Adjust Pin Current Thermal Regulation 1 IO = 10mA, VIN – VOUT = 2V (Note 2) Ripple rejection (Note 2) Units 1.238 AMC1117-1.8 AMC1117-2.5 AMC1117 Min Typ Max IO = 10mA, VIN = 5V VREF AMC1117-1.5 Output Voltage Test Conditions O TA = 25 C, 30 ms pulse RR fO = 120HZ, 1V RMS, I O = 400mA, VIN – VOUT = 3V 60 V V V 1.2 A 50 120 µA 0.01 0.1 %/W 75 dB Note 1: For the adjustable device, the minimum load current is the minimum current required to maintain regulation. Normally the current in the resistor divider used to set the output voltage is selected to meet the minimum load current requirement. Note 2: These parameters, although guaranteed, are not tested in production. Copyright © 2006 ADDtek Corp. 4 DD004_K -- JULY 2006 AMC1117 CHARACTERIZATION CURVES Unless otherwise specified, VIN= VOUT+2V，CIN=1µF，COUT=4.7µF，TA=25 OC Load Regulation Load Regulation 2.53 2.88 AMC1117-2.5 2.52 VO (V) 2.51 VO (V) AMC1117-2.85 2.87 2.5 2.49 2.48 2.86 2.85 2.84 2.83 2.47 2.82 2.46 0 200 400 600 800 0 1000 200 IO (mA) 5.02 1000 800 1000 AMC1117-5.0 5.01 5 VO (V) VO (V) 800 Load Regulation AMC1117-3.3 4.99 4.98 4.97 4.96 4.95 4.94 0 200 400 600 800 0 1000 200 400 600 IO (mA) IO (mA) Quiescent Current vs. Temperature Temperature Stability 2 10 Quiescent Current (mA) Output Voltage Change (%) 600 IO (mA) Load Regulation 3.34 3.33 3.32 3.31 3.3 3.29 3.28 3.27 3.26 400 1.5 1 0.5 0 -0.5 -1 -1.5 -2 -40 -20 0 20 40 Copyright © 2006 ADDtek Corp. 8 6 4 2 0 -40 -20 60 80 100 120 TA (OC) 0 20 40 60 80 100 120 TA (OC) 5 DD004_K -- JULY 2006 AMC1117 APPLICATION INFORMATION VIN AMC1117 VOUT VIN VOUT AMC1117 R1 121Ω 1% 121Ω 10µF C2 C1 10µF 100µF R2 1k 100µF TTL 1k 1k Adjustable Regulator VOUT = 1.25V ( 1+ 365 1% 5V Regulator with Shutdown R2 ) R1 VIN AMC1117-X.X VOUT C2 C1 100µF 10µF Fixed Voltage Regulator Copyright © 2006 ADDtek Corp. 6 DD004_K -- JULY 2006 AMC1117 Application Note: Maximum Power Calculation: TJ(MAX) – TA(MAX) θJA TJ(OC): Maximum recommended junction temperature TA(OC): Ambient temperature of the application θJA(OC/W): Junction-to-junction temperature thermal resistance of the package, and other heat dissipating materials. The maximum power dissipation of a single-output regulator : PD(MAX) = [(VIN(MAX) - VOUT(NOM))] × IOUT(NOM) + VIN(MAX) × IQ PD(MAX)= Where: Then VOUT(NOM) = the nominal output voltage IOUT(NOM) = the nominal output current, and IQ = the quiescent current the regulator consumes at IOUT(MAX) VIN(MAX) = the maximum input voltage θJA = (150 OC – TA)/ PD Thermal consideration: When power consumption is over about 404 mW (for SOT-223 package, 687mW for TO-252 package, at TA=70 OC), additional heat sink is required to control the junction temperature below 125 OC. The junction temperature is: TJ = P D (θJT + θCS + θSA) + TA P D: Dissipated power. θJT: Thermal resistance from the junction to the mounting tab of the package. θCS: Thermal resistance through the interface between the IC and the surface on which it is mounted. (Typically, θCS < 1.0°C/W) θSA: Thermal resistance from the mounting surface to ambient (thermal resistance of the heat sink). If PC Board copper is going to be used as a heat sink, below table can be used to determine the appropriate size of copper foil required. For multi-layered PCB, these layers can also be used as a heat sink. They can be connected with several through hole vias. 59 PCB θSA (OC /W) 2 PCB heat sink size (mm ) 500 45 1000 38 1500 33 2000 27 3000 24 4000 21 5000 Recommended figure of PCB area used as a heat sink. through hole vias (Top View) Copyright © 2006 ADDtek Corp. (Bottom View) 7 DD004_K -- JULY 2006 AMC1117 PACKAGE 3-Pin Surface Mount SOT-223 (SK) D MIN MILLIMETERS TYP MAX A 1.50 1.65 1.80 A1 0.02 0.05 0.08 B 0.60 0.70 0.80 B1 2.90 - 3.15 c 0.28 0.30 0.32 D 6.30 6.50 6.70 E 3.30 3.50 3.70 A c B1 H E K L e A1 e1 B e 2.3 BSC e1 4.6 BSC H 6.70 7.00 7.30 L 0.91 1.00 1.10 K 1.50 1.75 2.00 α 0° 5° 10° β 3° 3-Pin Surface Mount TO-252 (SJ) INCHES MIN TYP MAX MIN TYP MAX 0.086 - 0.094 2.18 - 2.39 A1 0.040 - 0.050 1.02 - 1.27 0.024 - - 0.61 - - 0.215 5.21 - 5.46 0.018 - 0.023 0.46 - 0.58 c1 0.018 - 0.023 0.46 - 0.58 D 0.210 - 0.220 5.33 - 5.59 E - 0.265 6.35 - 6.73 A E b2 A A1 c1 L2 SEATING PLAN b - b2 0.205 D L1 b e c H L c e1 Copyright © 2006 ADDtek Corp. MILLIMETERS 8 0.250 e 0.090 BSC 2.29 BSC e1 0.180 BSC 4.58 BSC H 0.370 - 0.410 9.40 - 10.41 L 0.020 - - 0.51 - - L1 0.025 - 0.040 0.64 - 1.02 L2 0.060 - 0.080 1.52 - 2.03 DD004_K -- JULY 2006 AMC1117 IMPORTANT NOTICE ADDtek reserves the right to make changes to its products or to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. A few applications using integrated circuit products may involve potential risks of death, personal injury, or severe property or environmental damage. ADDtek integrated circuit products are not designed, intended, authorized, or warranted to be suitable for use in life-support applications, devices or systems or other critical applications. Use of ADDtek products in such applications is understood to be fully at the risk of the customer. In order to minimize risks associated with the customer’s applications, the customer should provide adequate design and operating safeguards. ADDtek assumes to no liability to customer product design or application support. ADDtek warrants the performance of its products to the specifications applicable at the time of sale. ADDtek Corp. 9F, No. 20, Sec. 3, Bade Rd., Taipei, Taiwan, 105 TEL: 2-25700299 FAX: 2-25700196 Copyright © 2006 ADDtek Corp. 9 DD004_K -- JULY 2006