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UA7908CKCS Datasheet(PDF) 6 Page - Texas Instruments |
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UA7908CKCS Datasheet(HTML) 6 Page - Texas Instruments |
6 / 10 page µA7900 SERIES NEGATIVEVOLTAGE REGULATORS SLVS058D − JUNE 1976 − REVISED APRIL 2004 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics at specified virtual junction temperature, VI = −33 V, IO = 500 mA (unless otherwise noted) PARAMETER TEST CONDITIONS TJ† µA7924C UNITS PARAMETER TEST CONDITIONS TJ† MIN TYP MAX UNITS ‡ 25 °C −23 −24 −25 Output voltage‡ IO = 5 mA to 1 A, P ≤ 15 W VI = −27 V to −38 V, 0 °C to 125°C −22.8 −25.2 V Input regulation VI = −27 V to −38 V 5 480 mV Input regulation VI = −30 V to −36 V 3 240 mV Ripple rejection VI = −28 V to −38 V, f = 120 Hz 0 °C to 125°C 54 60 dB Output regulation IO = 5 mA to 1.5 A 85 480 mV Output regulation IO = 250 mA to 750 mA 25 240 mV Temperature coefficient of output voltage IO = 5 mA 0 °C to 125°C −1 mV/ °C Output noise voltage f = 10 Hz to 100 kHz 25 °C 600 µV Dropout voltage IO = 1 A 25 °C 1.1 V Bias current 25 °C 2 3 mA Bias current change VI = −27 V to −38 V 0.04 1 mA Bias current change IO = 5 mA to 1 A 0.06 0.5 mA Peak output current 25 °C 2.1 A † Pulse-testing techniques are used to maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 2- µF capacitor across the input and a 1-µF capacitor across the output. ‡ This specification applies only for dc power dissipation permitted by absolute maximum ratings. |
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