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TDA8137 DUAL 5.1V REGULATOR WITH DISABLE AND RESET . . . . . . . OUTPUT CURRENTS UP TO 1A FIXED PRECISION OUTPUT VOLTAGES 5.1V ± 2% OUTPUT 1 WITH RESET FACILITY OUTPUT 2 WITH DISABLE BY TTL INPUT SHORT CIRCUIT PROTECTION AT BOTH OUTPUTS THERMAL PROTECTION LOW DROP OUTPUT VOLTAGE DESCRIPTION The TDA8137 is a monolithic dual positive voltage regulator designed to provide fixed precision output voltages of 5.1V at currents up to 1A. An internal reset circuit generates a reset pulse when the output 1 decreases below the regulated voltage value. Output 2 can be disabled by TTL input. Short circuit and thermal protections are included. PIN CONNECTION (top view) HEPTAWATT (Plastic Package) ORDER CODE : TDA8137 7 6 5 4 3 2 1 OUTPUT 1 OUTPUT 2 RESET GROUND DISABLE DELAY CAP INPUT Tab connected to Pin 4 September 1993 1/5 8137-01.EPS TDA8137 BLOCK DIAGRAM IN 1 REFERENCE OUT 1 7 OUT 1 5 PROTECTION RESET RESET CR DELAY CAPACITOR 2 DISABLE 3 DISABLE OUT 2 6 OUT 2 TDA8137 8137-02.EPS 4 ABSOLUTE MAXIMUM RATINGS Symbol VIN VDIS VRST I01, 2 Pt TSTG Tj Parameter DC Input Voltage Pin 1 Disable Input Voltage Pin 3 Output Voltage at Pin 5 Output Currents Power Dissipation Storage Temperature Junction Temperature Value 20 20 20 Internally Limited Internally Limited ­ 65 to + 150 0 to + 150 Unit V V V °C °C THERMAL DATA Max. Max. 8137-02.TBL 8137-03.TBL Symbol RTH(j-c) Tj Parameter Thermal Resistance Junction-case Recommended Junction Temperature Value 3 0 to + 150 Unit °C/W °C ELECTRICAL CHARACTERISTICS (VIN = 7V ; Tj = 25oC unless otherwise specified) Symbol V01, 2 VI 01, 2 Parameter Output Voltage Dropout Voltage Line Regulation Load Regulation Quiescent Current Reset Threshold Voltage Reset Threshold Hysteresis Reset Pulse Delay at Pin 5 Saturation Volt. at Pin 5 in Reset Condition V01, 2LI V01, 2LO IQ V01RST VRTH tRD VRL Test Conditions I01, 2 = 10mA 7V < VIN < 14V, 5mA < I0 < 750mA I01, 2 = 750mA I01, 2 = 1A 7V < VIN < 14V, I01, 2 = 200mA 5mA < I01, 2 < 0.6A I01 = 10mA, Output 2 Disabled (K = V01) (see circuit description) Ce = 100nF (see circuit description) I5 = 5mA Min. 5 4.9 Typ. 5.1 K­0.4 20 K­.25 50 25 Max. 5.2 5.3 1.4 2 50 100 2 K­0.1 75 0.4 Unit V V V V mV mV mA V mV ms V 2/5 8137-04.TBL TDA8137 ELECTRICAL CHARACTERISTICS (VIN = 7V ; Tj = 25oC unless otherwise specified) (continued) Symbol IRH K01,2 Parameter Leakage Current at Pin 5 in Normal Condition Output Volt. Thermal Drift Test Conditions V5 = 10V Vo 106 K0 = T VO Tj = 0 to + 125°C VIN = 7V VIN = 16V, (see note 1) VDISH VDISL IDIS Tjsd Disable Volt. at Pin 3 High (out 2 active) Disable Volt. at Pin 3 Low (out 2 disabled) Disable Bias Current at Pin 3 Junction Temp. for Thermal Shut Down 0V < VDIS < 7V -100 145 2 0.8 2 100 Min. Typ. Max. 10 Unit µA ppm/°C I01,2SC Short Circ. Output Current 1.6 1 A A V µA °C 8137-04.TBL V Note 1 : The output short circuit currents are tested one channel at time. During a short circuit a large consumption of power