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TL499A Datasheet(PDF) 3 Page - Texas Instruments |
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TL499A Datasheet(HTML) 3 Page - Texas Instruments |
3 / 10 page TL499A WIDE-RANGE POWER-SUPPLY CONTROLLERS SLVS029G – JANUARY 1984 – REVISED SEPTEMBER 2001 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions 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 Note 4) 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 NOTE 4: 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. electrical characteristics over recommended operating conditions (unless otherwise noted) PARAMETER TEST CONDITIONS TL499AC UNIT PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Voltage deviation (see Note 5) 20 30 mV/V VO VI2 Switching regulator TA = –20°C to 70°C 1.2 VO – VI2 Switching regulator TA = –20°C to 85°C 1.9 V Dropout voltage Series regulator VI1 = 15 V, IO = 50 mA 1.8 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, RCL = 150 Ω, TA = 25°C 10 Output current Switching regulator VI2 = 1.5 V, VO = 15 V, RCL = 150 Ω, TA = 25°C 15 mA (see Figure 1) VI2 = 6 V, VO = 30 V, RCL = 150 Ω, TA = 25°C 65 mA Series regulator 100 Standby current 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 NOTE 5: Voltage deviation is the output voltage difference that occurs in a change from series regulation to switching regulation: Voltage deviation + V O series regulation * VO switching regulation |
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