7585-3.3ST

AMC7585 ETC1

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AMC DOC. #: AMC7585_E (LF) AMC7585 Feb 2005 5A LOW DROPOUT REGULATOR Copyright © 2002, ADD Microtech Corp. 3 www.addmtek.com ABSOLUTE MAXIMUM RATINGS (Note) Input Voltage (VIN) 7V Operating Junction temperature 150 O C Storage Temperature Range -65 O C to 150 O C Lead temperature (Soldering, 10 seconds) 300 O C Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal. POWER DISSIPATION TABLE Package θJA O C /W ) Derating factor ( mW/ O C ) TA ≥ 25 O C TA ≤ 25 O C Power rating(mW) TA=70 O C Power rating(mW) TA= 85 O C Power rating (mW) T 45 22.2 2775 1776 1443 TF 45 22.2 2775 1776 1443 ST/ST3 45 22.2 2775 1776 1443 ST/ST3F 45 22.2 2775 1776 1443 SJ 80 12.5 1562 1000 812 SJF 80 12.5 1562 1000 812 Note: TJ = TA + (PD × θJA) PD: Power dissipation. θJA: Thermal resistance from Junction to Ambient. For T and ST/ST3 packages, θJT = 3.0 O C / W. For SJ package, θJT = 7.0 O C /W. TJ = TTAB + (PD × θJT) TTAB: Tab temperature. θJT: Thermal resistance from junction to tab of the package. 1. The θJA numbers are guidelines for the thermal performance of the device/PC-board system. 2. All of the above assume no ambient airflow. 3. If power consumption is over above rating, ade quate heat sink is required to dissipate heat. RECOMMENDED OPERATING CONDITIONS Recommended Operating ConditionsParameter Symbol Min. Typ. Max. Units Input Voltage VIN 2.75 7 V Load Current (with adequate heatsinking) IO 0.010 5 A Input Capacitor (VIN to GND) 1 µF Output Capacitor with ESR of 10Ω max., (VOUT to GND) 10 µF Operating Ambient Temperature Range 0 70 O C Operating junction temperature TJ 125 O C

AMC DOC. #: AMC7585_E (LF) AMC7585 Feb 2005 5A LOW DROPOUT REGULATOR Copyright © 2002, ADD Microtech Corp. 4 www.addm tek.com BLOCK DIAGRAM GND VIN VOUT THERMAL LIMIT 1.25V VREF AMC7585-X.X circuit schematic VIN ADJ VOUT THERMAL LIMIT 1.25V VREF AMC7585-ADJ circuit schematic

AMC DOC. #: AMC7585_E (LF) AMC7585 Feb 2005 5A LOW DROPOUT REGULATOR Copyright © 2002, ADD Microtech Corp. 5 www.addm tek.com

ELECTRICAL CHARACTERISTICS

Unless otherwise specified, VIN = VOUT + 2V, IO = 10mA. These specifications apply operating ambient temperature range, and are for DC characteristics only. (Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.) AMC7585 Parameter Symbol Test Conditions Min. Typ. Max. Units AMC7585-2.5 TA = 25 O C 2.475 2.500 2.525 AMC7585-3.3 TA = 25 O C 3.267 3.300 3.333Output Voltage AMC7585-5.0 VOUT TA = 25 O C 4.950 5.000 5.050 V AMC7585-2.5 2.460 2.500 2.540 AMC7585-3.3 3.247 3.300 3.353Output Voltage AMC7585-5.0 VOUT I O = 10mA to 5A 4.920 5.000 5.080 V (Note 1) 1.238 1.250 1.262Reference Voltage AMC7585-ADJ VREF IO = 10mA to 5A, (Note 1) 1.230 1.250 1.270 V Line Regulation (Note 2) VOI (1.5V + VOUT) ≤ VIN ≤ 7V 0.04 0.2 % Load regulation (Note 2) VOL IO = 10mA to 5A 0.08 0.3 % IO = 10mA 1.00 1.15Dropout Voltage V (Note 3) IO = 5A 1.15 1.30 V Quiescent Current ( for AMC7585-X.X) IQ VIN ≤ 7V, IO = 10mA to 3A 8 13 mA Adjust Pin Current ( for AMC7585-ADJ) IADJ 50 120 µA Current Limit ICL (VIN - VOUT)=2V 5.1 6.8 A Minimum Load Current (Note 4) Imin 5 10 mA Ripple Rejection (Note 5) RR VRIPPLE = 1VPP, IO = 100mA, fO=120Hz 60 80 dB Note 1 Output voltage is set to be 2.5V. Note 2: Line and load regulations are guaranteed up to maximum power dissipation determined by input/output differential and the output current. However, the maximum power will not be available over the full input/output voltage range. Note 3: The specifications represent the minimum input/output voltage required to maintain 1% regulation. Note 4: 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 5: These parameters, although guaranteed, are not tested in production prior to shipment

AMC DOC. #: AMC7585_E (LF) AMC7585 Feb 2005 5A LOW DROPOUT REGULATOR Copyright © 2002, ADD Microtech Corp. 6 www.addm tek.com CHARACTERIZATION CURVES CIN=10uF, COUT=22uF, TA=25 O C, unless otherwise specified. Load Regulation Load Regulation 2.4 2.42 2.44 2.46 2.48 2.5 2.52 2.54 2.56 2.58 2.6 012 3 45 VIN =4.5V,VOUT =2.5V 1.5 1.55 1.6 1.65 1.7 1.75 1.8 1.85 1.9 1.95 01 2 3 45 VIN =3.8V, VOUT =1.8V Output Voltage (V) Output Voltage (V) Output Current (A) Output Current (A) Load Regulation Load Regulation 4.7 4.75 4.8 4.85 4.9 4.95 5.05 5.1 5.15 5.2 01 2 3 45 Output Current (A) VIN =7.0V, VOUT =5.0V 3. 05 3. 1 3. 15 3. 2 3. 25 3. 3 3. 35 3. 4 3. 45 3. 5 01 2 3 4 5 Output Current (A) VIN =5.3V, VOUT =3.3V Output Voltage (V) Output Voltage (V) -40 -20 0 20 40 60 80 100 120 Quiescent Current vs. Temperature Temperature ( O Quiescent Current (mA) Output Voltage v.s. Temperature 2.4 2.42 2.44 2.46 2.48 2.5 2.52 2.54 2.56 2.58 2.6 -40 -20 0 20 40 60 80 100 120 IO=5A IO=10mA VOUT(V) VIN =5V, VOUT=2.5V Temperature ( O

AMC DOC. #: AMC7585_E (LF) AMC7585 Feb 2005 5A LOW DROPOUT REGULATOR Copyright © 2002, ADD Microtech Corp. 7 www.addm tek.com Application Note: The maximum power dissipation of a single-output regulator: PD(MAX) = [(VIN(MAX) - VOUT(NOM))] × IOUT(NOM) + VIN(MAX) × IQ 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 Thermal consideration: The AMC7585 series have internal power and thermal limiting circuitry designed to protect the device under overload conditions. However maximum junction temperature ratings should not be exceeded under continuous normal load conditions. The thermal protection circuit of AMC7585 series will prevent the device from damage due to excessive power dissipation. When the device temperature rises to approximately 150 O C, the regulator will be turned off. When power consumption is over about 1.2W (for TO-220/ TO-263 package, 687mW for TO-252 package, at TA=70 oC), additional heat sink is required to control the junction temperature below 125 O The junction temperature is: TJ = PD (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. PCB θSA (°C / W ) 59 45 38 33 27 24 21 PCB heat sink size (mm2) 500 1000 1500 2000 3000 4000 5000 Recommended figure of PCB area used as a heat sink. through hole vias (Bottom View) (Top View)

AMC DOC. #: AMC7585_E (LF) AMC7585 Feb 2005 5A LOW DROPOUT REGULATOR Copyright © 2002, ADD Microtech Corp. 8 www.addm tek.com 3-Pin Plastic TO-220 (T) INCHES MILLIMETERS MIN TYP MAX MIN TYP MAX A 0.140 - 0.190 3.56 - 4.83 b1 0.045 - 0.070 1.14 - 1.78 b 0.020 - 0.045 0.51 - 1.14 c 0.012 - 0.045 0.30 - 1.14 D 0.560 - 0.650 14.22 - 16.51 E 0.380 - 0.420 9.65 - 10.67 e 0.090 - 0.110 2.29 - 2.79 e1 0.190 - 0.210 4.83 - 5.33 F 0.020 0.055 0.51 - 1.40 H1 0.230 - 0.270 5.84 - 6.86 J1 0.080 - 0.115 2.03 - 2.92 L 0.500 - 0.580 12.7 - 14.73 P 0.139 - 0.161 3.53 - 4.09 Q 0.100 - 0.135 2.54 - 3.43 E b P e Q D L c F A SEATING PLAN 3-Pin Surface Mount TO-263 (ST) INCHES MILLIMETERS MIN TYP MAX MIN TYP MAX A 0.160 - 0.190 4.06 - 4.83 b 0.020 - 0.039 0.51 - 0.99 b2 0.045 - 0.055 1.14 - 1.40 c 0.015 TYP. 0.38 TYP. c2 0.045 - 0.055 1.14 - 1.40 D 0.340 - 0.380 8.64 - 9.65 E 0.380 - 0.405 9.65 - 10.29 e 0.100 BSC 2.54 BSC L 0.575 - 0.625 14.61 - 15.88 L1 0.090 - 0.110 2.29 - 2.79 L3 0.050 - 0.070 1.27 - 1.78 E b b2e L c D A

AMC DOC. #: AMC7585_E (LF) AMC7585 Feb 2005 5A LOW DROPOUT REGULATOR Copyright © 2002, ADD Microtech Corp. 9 www.addm tek.com 3-Pin Surface Mount TO-263 (ST3) INCHES MILLIMETERS MIN TYP MAX MIN TYP MAX A 0.160 - 0.190 4.06 - 4.83 b 0.020 - 0.039 0.51 - 0.99 b2 0.045 - 0.055 1.14 - 1.40 c 0.015 TYP. 0.38 TYP. c2 0.045 - 0.055 1.14 - 1.40 D 0.340 - 0.380 8.64 - 9.65 E 0.380 - 0.405 9.65 - 10.29 e 0.100 BSC 2.54 BSC L 0.575 - 0.625 14.61 - 15.88 L1 0.090 - 0.110 2.29 - 2.79 E b b2e L c A D 3-Pin Surface Mount TO-252 (SJ) INCHES MILLIMETERS MIN TYP MAX MIN TYP MAX A 0.086 - 0.094 2.18 - 2.39 A1 0.040 - 0.050 1.02 - 1.27 b2 0.205 - 0.215 5.21 - 5.46 c 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 0.250 - 0.265 6.35 - 6.73 e 0.090 BSC 2.29 BSC e1 0.180 BSC 4.58 BSC H 0.370 - 0.410 9.40 - 10.41 L1 0.025 - 0.040 0.64 - 1.02 L2 0.060 - 0.080 1.52 - 2.03 E D be SEATING PLAN H L c A

AMC DOC. #: AMC7585_E (LF) AMC7585 Feb 2005 5A LOW DROPOUT REGULATOR Copyright © 2002, ADD Microtech Corp. 10 www.addmtek.com IMPORTANT NOTICE ADD Microtech (ADDM) 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. ADDM 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 ADDM products in such applications is understood to be fully at the risk of the cust omer. In order to minimize risks associated with the customer’s applications, the customer should provide adequate design and operating safeguards. ADDM assumes to no liability to customer product design or application support. ADDM warrants the performance of its products to the specifications applicable at the time of sale. U.S. Asia Pacific region ADD Microtech Inc.

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