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TL499ACP Datasheet(PDF) 4 Page - Texas Instruments |
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TL499ACP Datasheet(HTML) 4 Page - Texas Instruments |
4 / 19 page TL499A SLVS029H – JANUARY 1984 – REVISED NOVEMBER 2015 www.ti.com 6.3 Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted) MIN NOM MAX UNIT Output voltage, VO 2.9 30 V Input voltage, VI1 (SERIES IN1) 4.5 32 V Input voltage, VI2 (SW REG IN2) 1.1 10 V Output-to-input differential voltage, switching regulator, VO – VI2 (see (1)) 1.2 28.9 V Continuous output current, IO 100 mA Power switch current (at SW IN) 500 mA Current-limiting resistor, RCL 150 1000 Ω Filter capacitor 100 470 µF Pass capacitor 0.1 µF Inductor, L (dcr ≤ 0.1 Ω) 50 150 µH Operating free-air temperature, TA –20 85 °C (1) When operating temperature range is TA≤ 70°C, minimum VO– VI2 is ≥ 1.2 V. When operating temperature range is TA ≤ 85°C, minimum VO – VI2 is ≥ 1.9 V. 6.4 Thermal Information TL499A THERMAL METRIC(1) P (PDIP) PS (SO) UNIT 8 PINS 8 PINS RθJA Junction-to-ambient thermal resistance(2)(3) 49.7 110.7 °C/W RθJC(top) Junction-to-case (top) thermal resistance 38.8 69.0 °C/W RθJB Junction-to-board thermal resistance 26.9 55.7 °C/W ψJT Junction-to-top characterization parameter 16.1 20.1 °C/W ψJB Junction-to-board characterization parameter 26.7 54.9 °C/W (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953. (2) Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) – TA) / θJA. Operating at the absolute maximum TJ of 150°C can affect reliability. (3) The package thermal impedance is calculated in accordance with JESD 51-7. 6.5 Electrical Characteristics over operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Voltage deviation (see (1)) 20 30 mV/V TA = –20°C to 70°C 1.2 VO – VI2 Switching regulator minimum boost V TA = –20°C to 85°C 1.9 Dropout voltage Series regulator VI1 = 15 V, IO = 50 mA 1.8 V Reference voltage (internal) VI1 = 5 V, VO = 3 V, IO = 1 mA 1.2 1.26 1.32 V Reference-voltage change with temperature 5 10 mV/V Output regulation (of reference voltage) IO = 1 mA to 50 mA 10 30 mV/V VI2 = 1.1 V, VO = 12 V, 10 RCL = 150 Ω, TA = 25°C VI2 = 1.5 V, VO = 15 V, Switching regulator 15 Output current RCL = 150 Ω, TA = 25°C mA (see Figure 3) VI2 = 6 V, VO = 30 V, 65 RCL = 150 Ω, TA = 25°C Series regulator 100 Switching regulator VI2 = 3 V, VO = 9 V, TA = 25°C 15 80 µA Standby current Series regulator VI1 = 15 V, VO = 9 V, RE2 = 4.7 kΩ 0.8 1.2 mA (1) Voltage deviation is the output voltage difference that occurs in a change from series regulation to switching regulation: Voltage deviation = VO (series regulation) – VO (switching regulation) 4 Submit Documentation Feedback Copyright © 1984–2015, Texas Instruments Incorporated Product Folder Links: TL499A |
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