7908

7908 THREE-TERMINAL NEGATIVE 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 VOLTAGE OFFERED IN 4% TOLERANCE. ABSOLUTE MAXIMUM RATINGS (Ta= 25° C) Characteristic Symbol Norm Unit TO-220 Input Voltage Vin V -35 Maximum Dissipated 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 1 Junction to Case 1. GND Thermal Resistance, OjA °C/W 65 2. Input Junction to Air 3. Output °C 150 Junction Temperature Tj Tc=-45÷+70°C ELECTRICAL CHARACTERISTICS (Vin=-14V,Io=0.5A,Ci=2.2mkF,Co=1.0mkF,Tj=0+125°C, unless otherwise noted.) Characteristic Symbo Norm Unit l Min TYP Max Output Voltage(Tj=25°C) Vo -7.7 -8.3 V Vo Output Voltage (5.0mA≤Io≤1.0A,Po≤15W) -7.6 -8.4 V -10,5V≥Vin≥-23V Line Regulation(Tj=+25°C, Io=0,1A) ∆Vv 80 mV -10,5 V≥Vin≥-25 V 40 -11V≥Vin≥-17 V (Tj=+25°C, Io=0,5A) 160 -10,5 V≥Vin≥-25 V 80 -11V≥Vin≥-17 V Load Regulation(Tj=+25°C) mV ∆Vi 160 5.0mA≤Io≤1.5A 80 0.25A≤Io≤0.75A Quiescent Current(Tj=+25°C) Ib 8.0 mA 1.0 mA Quiescent Current Change -10.5 V≥Vin≥-25 V ∆Ib 0.5 5.0mA≤Io≤1.5 A Dropout Voltage (Io=1.0A,Tj=+25°C) Vi-Vo 2.0 V Average Temperature Coefficient of Output TCVo 0,5 mV/°C Voltage ...