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LM138K Datasheet(PDF) 7 Page - STMicroelectronics |
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LM138K Datasheet(HTML) 7 Page - STMicroelectronics |
7 / 23 page LM138 - LM238 - LM338 Electrical characteristics 7/23 Table 5. Electrical characteristics for LM338 (1) Symbol Parameter Test conditions Min. Typ. Max. Unit KVI Line regulation (2) TA = 25°C, VI - VO = 3 to 35 V 0.005 0.03 %/V KVO Load regulation (2) TA = 25°C IO = 10 mA to 5 A VO ≤ 5 V 5 25 mV VO ≥ 5 V 0.1 0.5 % Thermal regulation Pulse = 20 ms 0.002 0.02 %/W IADJ Adjustment pin current 45 100 µA ΔIADJ Adjustment pin current change IL = 10 mA to 5 A, VI - VO = 3 to 35 V 0.2 5 µA VREF Reference voltage VI - VO = 3 to 35 V, IO = 10 mA to 5 A P ≤ 50 W 1.19 1.24 1.29 V KVI Line regulation (2) VI - VO = 3 to 35 V 0.02 0.06 %/V KVO Load regulation (2) IO = 10 mA to 5 A VO ≤ 5 V 20 50 mV VO ≥ 5 V 0.3 1 % KVT Temperature stability TJ = TMIN to TMAX 1% IO(MIN) Minimum load current VI - VO ≤ 35 V 3.5 10 mA IO(MAX) Current limit VI - VO ≤ 10 V DC 5 8 A 0.5 ms Peak 7 12 VI - VO = 30 V 1 VNO RMS output noise (% of VO) Ta = 25°C, f = 10 Hz to 10 kHz 0.003 % RVF Ripple rejection ratio VO = 10 V, f = 120 Hz 60 dB CADJ = 10 µF 60 75 KVH Long term stability TA = 125°C 0.3 1 % 1. (TJ = 0 to150 °C, VI - VO = 5 V, IO = 2.5 A. Although power dissipation is internally limited, these specifications apply to power dissipation up to 50 W, unless otherwise specified) 2. Regulation is measured at constant junction temperature. Changes in output voltage due to heating effects are taken into account separately by thermal rejection. |
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Similar Description - LM138K |
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