Antesala de la revolucion
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Publicado: 23 de enero de 2010
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THREE-TERMINAL POSITIVE VOLTAGE REGULATOR IC
FEATURES: - OUTPUT CURRENT IN EXCESS OF 1A; - NO EXTERNAL COMPONENTS REQUIRED; -INTERNAL SHORT CIRCUIT CURRENT LIMITING; - INTERNAL THERMAL OVERLOAD PROTECTION; - OUTPUT TRANSISTOR SAFE-AREA COMPENSATION; - OUTPUT VOLTAGEOFFERED IN 4% TOLERANCE.
ABSOLUTE MAXIMUM RATINGS (Ta= 25° C) Characteristic Symbol Norm Unit TO-220 Input Voltage Vin V 35 MaximumDissipated Ptot(max) W 15 Power(with heat sink) Maximum Dissipated Ptot(max) W 1.5 Power(without heat sink) Thermal Resistance OjC °C/W 5.0 1Junction to Case 1. Input Thermal Resistance, OjA °C/W 65 2. GND Junction to Air 3. Output 150 °C Junction Temperature Tj Tc=-45÷+70°C ELECTRICALCHARACTERISTICS (Vin=10V,Io=0.5A,Ci=0.33mkF,Co=0.1mkF,Tj=0+125°C, unless otherwise noted.) Characteristic Symbo Norm Unit l Min TYP Max Vo 4.85.2 V Output Voltage(Tj=25°C) Output Voltage (5.0mA≤Io≤1.0A,Po≤15W) 7.0V≤Vin≤20V Line Regulation(Tj=+25°C) 7.0V≤Vin≤25 V 8.0 V≤Vin≤12 V LoadRegulation(Tj=+25°C) 5.0mA≤Io≤1.5A 0.25A≤Io≤0.75A Quiescent Current(Tj=+25°C) Quiescent Current Change7.0 V≤Vin≤25 V 5.0mA≤Io≤1.0 A DropoutVoltage(Io=1.0A,Tj=+25°C) Short Circuit Current Limit(Ta=+25°C),Vin=35V Peak Output Current(Tj=+25°C) Average Temperature Coefficient ofOutput Voltage Vo 4.75 ∆Vv 5.25 V mV 100 50 mV 100 50 8.0 mA 1.3 mA 0.5 V A A mV/°C
∆Vi
Ib ∆Ib Vi-Vo Isс Imax TCVo 2.0 0.4 2.2 0.3
THREE-TERMINAL POSITIVE VOLTAGE REGULATOR IC
FEATURES: - OUTPUT CURRENT IN EXCESS OF 1A; - NO EXTERNAL COMPONENTS REQUIRED; -INTERNAL SHORT CIRCUIT CURRENT LIMITING; - INTERNAL THERMAL OVERLOAD PROTECTION; - OUTPUT TRANSISTOR SAFE-AREA COMPENSATION; - OUTPUT VOLTAGEOFFERED IN 4% TOLERANCE.
ABSOLUTE MAXIMUM RATINGS (Ta= 25° C) Characteristic Symbol Norm Unit TO-220 Input Voltage Vin V 35 MaximumDissipated Ptot(max) W 15 Power(with heat sink) Maximum Dissipated Ptot(max) W 1.5 Power(without heat sink) Thermal Resistance OjC °C/W 5.0 1Junction to Case 1. Input Thermal Resistance, OjA °C/W 65 2. GND Junction to Air 3. Output 150 °C Junction Temperature Tj Tc=-45÷+70°C ELECTRICALCHARACTERISTICS (Vin=10V,Io=0.5A,Ci=0.33mkF,Co=0.1mkF,Tj=0+125°C, unless otherwise noted.) Characteristic Symbo Norm Unit l Min TYP Max Vo 4.85.2 V Output Voltage(Tj=25°C) Output Voltage (5.0mA≤Io≤1.0A,Po≤15W) 7.0V≤Vin≤20V Line Regulation(Tj=+25°C) 7.0V≤Vin≤25 V 8.0 V≤Vin≤12 V LoadRegulation(Tj=+25°C) 5.0mA≤Io≤1.5A 0.25A≤Io≤0.75A Quiescent Current(Tj=+25°C) Quiescent Current Change7.0 V≤Vin≤25 V 5.0mA≤Io≤1.0 A DropoutVoltage(Io=1.0A,Tj=+25°C) Short Circuit Current Limit(Ta=+25°C),Vin=35V Peak Output Current(Tj=+25°C) Average Temperature Coefficient ofOutput Voltage Vo 4.75 ∆Vv 5.25 V mV 100 50 mV 100 50 8.0 mA 1.3 mA 0.5 V A A mV/°C
∆Vi
Ib ∆Ib Vi-Vo Isс Imax TCVo 2.0 0.4 2.2 0.3
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