NIKO-SEM L1084S5 5A Adjustable Low Dropout Linear Regulator (LDO) TO-263 GENERAL DESCRIPTION FEATURES The L1084 is a positive and low dropout three-terminal voltage regulator with 5A output current capability. This device is designed for use in low voltage applications that offers lower dropout voltage and faster transient response. z Very easy to use, it requires only two external resistors to set the output voltage z Low dropout voltage: 1.2V typical at up to 5A z Low ground current z Fast transient response z Current & thermal limiting z Line regulation: 0.5% typical z Load regulation: 0.5% typical z TO-263 packages This device is fully protected against over current faults, over temperature operation, reversed input polarity, reversed lead insertion, transient voltage spike …etc. On-Chips trimming the reference voltage to 1% and features the low dropout of maximum 1.45 volts. APPLICATIONS z High current microprocessor supplies z Low voltage logic supply z Powering VGA & sound card z Portable instrumentation z Constant current regulator z Post regulator for switching power supply The L1084 Series regulators are available in the popular industry standard TO-263 packages. TYPICAL APPLICATION Vin 5 L1084X5 IN OUT ADJ Cin Vref 2 Vout 3 R1 + + 10uF Cout 10uF R2 Iadj Vo = Vref (1+R2/R1) + Iadj x R2 1. Cin needed if device is far from filter capacitors. 2. Cout required for stability. - Basic Adjustable Regulator Circuit - 1 Rev. 1.0 MAR NIKO-SEM L1084S5 5A Adjustable Low Dropout Linear Regulator (LDO) TO-263 ABSOLUTE MAXIMUM RATINGS z Maximum Supply Voltage z Operating Junction Temperature Range z Storage Temperature Range z Lead Temperature (Soldering, 10 Seconds) 7V Internally Limited z Power Dissipation z Thermal Resistance Junction to Case, θJC z Thermal Resistance Junction to Ambient, θJA TO-263 2.5 °C/W 0 to 125 °C -40 to 150 °C 260 °C 60 °C/W ELECTRICAL CHARACTERISTICS (Unless otherwise specified, TA = 25 °C.) Parameter Reference Voltage Dropout Voltage Line Regulation Load Regulation Minimum Load Current Symbol VREF Test Conditions VIN = 5V, IOUT = 10mA Typical 1.25V VD ΔVREF = 1%, IOUT = 5A REG(LINE) (VOUT + 1.5V) ≤ VIN ≤ 7V, IOUT = 10mA REG(LOAD) (VIN -VOUT) = 3V, 10mA ≤ IOUT ≤ 5A 1.2V 0.5% 0.5% 1.5V ≤ (VIN -VOUT) ≤ 5.75V 10mA IO Adjust Pin Current Current Limit IADJ ICL RMS Output Noise VN Ripple Rejection Ratio RA VIN - VOUT = 2V f = 120Hz, CADJ = 22µF for ADJ pin, VIN = 5V, IOUT = 5A Limits 1.23VMin 1.27VMax 1.45V 2% 2.5% 55µA 7.5A 0.003% of VOUT 100µA 5.0A (Min) 72dB 60dB (Min) DEVICE SELECTION GUIDE Device L1084S5 Package TO-263 (5-Lead) Marking L1084S5 2 Rev. 1.0 MAR NIKO-SEM 5A Adjustable Low Dropout Linear Regulator (LDO) L1084S5 TO-263 PIN CONFIGURATIONS Pin # Function 1 NC 2 Adjust 3 Output 4 NC 5 Input Note: TAB is Output Pin 3 Rev. 1.0 MAR NIKO-SEM L1084S5 5A Adjustable Low Dropout Linear Regulator (LDO) TO-263 TO-263 (D2PAK, 5-Lead) MECHANICAL DATA mm Dimension mm Min. Typ. Max. A 14.5 15 15.8 B 4.2 C 1.20 D Dimension Min. Typ. Max. H 1.0 1.5 1.8 4.7 I 9.8 1.35 J 6.5 K 1.5 2.8 E 0.3 F -0.102 G 8.5 0.4 9 10.3 0.5 L 0.7 0.85 1.0 0.203 M 1.57 1.7 1.83 9.5 N 4 Rev. 1.0 MAR