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LM138 Datasheet(PDF) 5 Page - Linear Technology |
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LM138 Datasheet(HTML) 5 Page - Linear Technology |
5 / 14 page LT138A/LT338A LM138/LM338 5 138afd For more information www.linear.com/LT138A Typical perForMance characTerisTics Temperature Stability Output Impedance Minimum Operating Current Ripple Rejection Ripple Rejection Ripple Rejection Current Limit Current Limit Current Limit TEMPERATURE (°C) –50 1.230 1.240 1.250 1.260 1.270 –25 0 25 50 138A/338A G04 75 100 125 150 FREQUENCY (Hz) 10 0.1 1 10 100k 138/338 G05 0.01 0.001 0.0001 100 1k 10k 1M VIN = 15V VOUT = 10V IOUT = 500mA CADJ = COUT = 10μF CADJ = COUT = 0μF INPUT-OUTPUT DIFFERENTIAL (V) 0 3 4 5 15 25 40 138A/338A G06 2 1 0 5 10 20 30 35 TJ = 25°C TJ = 150°C TJ = –55°C OUTPUT VOLTAGE (V) 0 5 0 40 100 10 20 25 138A/338A G07 20 80 60 15 30 35 CADJ = 10μF CADJ = 0μF VIN – VOUT = 5V IOUT = 500mA f = 120Hz TJ = 25°C FREQUENCY (Hz) 10 60 80 100 100k 138A/338A G08 40 20 0 100 1k 10k 1M CADJ = 10μF CADJ = 0μF VIN = 15V VOUT = 10V IOUT = 0.2A OUTPUT CURRENT (A) 0.1 40 50 60 80 1 10 138/338 G09 70 CADJ = 10μF CADJ = 0μF VIN = 15V VOUT = 10V f = 120Hz TCASE = 25°C INPUT-OUTPUT DIFFERENTIAL (V) 0 8 12 40 138A/338A G10 4 0 10 20 30 16 PEAK CURRENT LIMIT DC CURRENT LIMIT TCASE = 25°C PRELOAD = 0A PRELOAD = 1A PRELOAD = 5A TIME (ms) 0.1 8 10 12 14 1 10 100 138A/338A G11 6 4 2 0 PRELOAD = 0A PRELOAD = 5A VIN = 10V VOUT = 5V TCASE = 25°C TIME (ms) 0.1 8 10 12 14 1 10 100 138A/338A G12 6 4 2 0 PRELOAD CURRENT = 0 TCASE = 25°C VIN – VOUT = 10V VIN – VOUT = 15V VIN – VOUT = 20V VIN – VOUT = 30V |
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