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UCC284-12 Datasheet(PDF) 3 Page - Texas Instruments |
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UCC284-12 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 10 page UCC284–5, UCC284–12, UCC284–ADJ, UCC384–5, UCC384–12, UCC384–ADJ LOW-DROPOUT 0.5-A NEGATIVE LINEAR REGULATOR SLUS234D – JANUARY 2000 – REVISED FEBRUARY 2002 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics TA = 0°C to 70°C for the UCC384 and –40°C to 85°C for the UCC284, VIN = VOUT – 1.5 V, IOUT = 0 mA, COUT = 4.7 µF, and CT = 0.015 µF. For UCC384–ADJ, VOUT is set to –3.3V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT UCC384–5 Fixed –5-V 0.5-A Regulation Section Output voltage TA = 25°C –5.075 –5 –4.925 V Output voltage Over all conditions –5.100 –4.850 V Line regulation VIN = –5.2 V to –15 V 1.5 10 mV Load regulation IOUT = 0 mA to 0.5 A 0.1 0.25 % Output noise voltage TA = 25°C, BW = 10 Hz to 10 kHz 200 µVRMS Dropout voltage VOUT VIN IOUT 0.5 A, VOUT = –4.8 V 0.20 0.50 V Dropout voltage, VOUT – VIN IOUT 50 mA, VOUT = –4.8 V 20 50 mV UCC384–5 Fixed –5-V 0.5-A Power Supply Section Input voltage range –15 –5.2 V Quiescent current charge pump on VIN = –4.85 V, See Note 1 280 350 µA Quiescent current VIN = –15 V 200 250 µA Quiescent current in shutdown VIN = –13 V, SD/CT = 0 V TA = 0°C to 85°C, See Note 2 15 45 µA Quiescent current in shutdown VIN = –13 V, SD/CT = 0 V TA = –40°C to 0°C, See Note 2 100 µA Shutdown threshold At shutdown pin (SD/CT) –1.0 –0.7 –0.4 V Shutdown input current SD/CT = 0 V 5 10 25 µA Output leakage in shutdown VIN = –15 V, VOUT = 0 V, See Note 3 1 50 µA Overtemperature shutdown 140 °C Overtemperature hysteresis 20 °C UCC384–5 Fixed –5-V 0.5-A Current Limit Section Peak current limit VOUT = 0 V 0.7 1.1 1.5 A Overcurrent threshold 0.55 0.7 0.9 A Current limit duty cycle VOUT = 0 V 2.5 4 % Overcurrent time out, tON VOUT = 0 V 300 500 700 µs UCC384–12 Fixed 12-V 0.5-A Regulation Section Output voltage TA = 25°C –12.18 –12 –11.82 V Output voltage Over all conditions –12.24 –11.64 V Line regulation VIN = –12.5 V to –15 V 5 15 mV Load regulation IOUT= 0 mA to 0.5 A 0.1 0.3 % Output noise voltage TA = 25°C BW = 10 Hz to 10 kHz 200 µVRMS Dropout voltage VOUT VIN IOUT 0.5 A, VOUT = –11.6 V 0.15 0.5 V Dropout voltage, VOUT – VIN IOUT 50 mA, VOUT = –11.6 V 15 50 mV UCC384–12 Fixed –12 V-0.5-A Power Supply Section Input voltage range –15 –12.5 V Quiescent current VIN = –15 V 220 350 µA Quiescent current in shutdown VIN = –13 V, SD/CT = 0 V TA = 0°C to 85°C, See Note 2 15 45 µA Quiescent current in shutdown VIN = –13 V, SD/CT = 0 V TA = –40°C to 0°C, See Note 2 100 µA NOTES: 1. The internal charge pump is enabled only for dropout condition with low VIN. Only in this condition is the charge pump required to provide additional output FET fate drive to maintain dropout specifications. For conditions where the charge pump is not required, it is disabled, which lowers overall device power consumption. 2. Ensured by design. Not production tested. 3. In the application during shutdown mode, output leakage current adds to quiescent current. |
Similar Part No. - UCC284-12 |
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Similar Description - UCC284-12 |
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