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2 / 5 page NEGATIVE ADJUSTABLE VOLTAGE REGULATOR Semelab Limited Semelab Limited Semelab Limited Semelab Limited Coventry Road, Lutterworth, Leicestershire, LE17 4JB Telephone +44 (0) 1455 556565 Fax +44 (0) 1455 552612 Email: sales@semelab-tt.com Website: http://www.semelab-tt.com Document Number 8377 Issue 1 Page 2 of 5 ELECTRICAL CHARACTERISTICS(1)(3) (TC = 25°C unless otherwise stated) LM137, IP137, LM137HV, IP137HV Symbols Parameters Test Conditions Min. Typ Max. Units IOUT = 10mA -1.225 -1.250 -1.275 VREF Reference Voltage 10mA ≤ IOUT ≤ IMAX, P ≤ PMAX, 3V ≤ (VIN-VOUT) ≤ VMAX • -1.200 -1.250 -1.300 V 0.010 0.020 IN OUT V V ∆ ∆ Line Regulation (2) 3V ≤ (VIN-VOUT) ≤ VMAX, IOUT = 10mA • 0.020 0.050 %/V VOUT ≤ 5V 15 25 mV VOUT ≥ 5V 0.3 0.5 % VOUT ≤ 5V • 20 50 mV OUT I OUT V ∆ ∆ Load Regulation (2)(3) 10mA ≤ IOUT ≤ IMAX VOUT ≥ 5V • 0.3 1.0 % Thermal Regulation VIN = -7.92V, IOUT = 1.5A, PD = 10W, TA = 25°C, 10ms Pulse 0.002 0.02 %/W VOUT = -10V CADJ = 0 60 Ripple Rejection f = 120Hz CADJ = 10µF • 66 77 dB IADJ Adjust Pin Current • 65 100 10mA ≤ IOUT ≤ IMAX • 0.5 5 3V ≤ (VIN-VOUT) ≤ 40V • 2 5 ∆IADJ Adjust Pin Current Change 3V ≤ (VIN-VOUT) ≤ 50V (HV Series) (HV Series) (HV Series) (HV Series) • 3 6 µA (VIN - VOUT) ≤ 40V • 2.5 5 IMIN Minimum Load Current (VIN - VOUT) ≤ 10V • 1.2 3 mA (VIN - VOUT) ≤ 15V • 1.5 2.2 3.2 (VIN - VOUT) = 40V • 0.24 0.4 ICL Current Limit (VIN - VOUT) = 50V (HV Series) (HV Series) (HV Series) (HV Series) • 0.2 0.4 0.8 A TEMP OUT V ∆ ∆ Temperature Stability • 0.6 TIME OUT V ∆ ∆ Long Term Stability TA = 125°C, 1000Hrs 0.3 1.0 en RMS Output Noise (% of VOUT) TA = 25°C, 10Hz ≤ f ≤ 10KHz 0.003 % Notes Notes Notes Notes The ● denotes the specifications which apply over the full operating temperature range. (1) Test conditions unless otherwise stated: VIN - VOUT = 5V, IOUT = 0.5A, PMAX = 10W, IMAX = 1.5A (2) Regulation is measured at constant junction temperature, using pulse testing at a low duty cycle. Changes in output voltage due to heating effects are covered under thermal regulation specifications. Load regulation is measured at the junction of the wide and narrow portion of the output lead. (3) VMAX = 40V for LM137, IP137, LM137A, IP137A VMAX = 50V for LM137HV, IP137HV, LM137AHV, IP137AHV |
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