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LM237 Scheda tecnica(PDF) 4 Page - Texas Instruments |
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LM237 Scheda tecnica(HTML) 4 Page - Texas Instruments |
4 / 10 page LM237, LM337 3-TERMINAL ADJUSTABLE REGULATORS SLVS047G – NOVEMBER 1981 – REVISED SEPTEMBER 2003 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics, TJ = 25°C PARAMETER TEST CONDITIONS† LM237, LM337 UNIT PARAMETER TEST CONDITIONS† MIN TYP MAX UNIT Input regulation‡ VI – VO = –3 V to –40 V 0.01 0.04 %/V Ripple rejection VO = –10 V, f = 120 HZ 60 dB Ripple rejection VO = –10 V, CADJ = 10 µF, f = 120 HZ 66 77 dB Output regulation IO = 10 mA to 1.5 A |VO| ≤ 5 V 50 mV Output regulation IO = 10 mA to 1.5 A |VO| ≥ 5 V 0.3% 1% Output noise voltage f = 10 HZ to 10 kHZ 0.003% Minimum output current to maintain regulation |VI – VO| ≤ 40 V 2.5 10 mA Minimum output current to maintain regulation |VI – VO| ≤ 10 V 1.5 6 mA Peak output current |VI – VO| ≤ 15 V 1.5 2.2 A Peak output current |VI – VO| ≤ 40 V 0.15 0.4 A Adjustment-terminal current 65 100 µA Change in adjustment-terminal current VI – VO = – 2.5 V to –40 V, IO = 10 mA to MAX 2 5 µA Reference voltage (output to ADJ) VI – VO = – 3 V to –40 V, IO = 10 mA to 1.5 A, P ≤ rated dissipation –1.213 –1.25 –1.287 V † Unless otherwise noted, these specifications apply for the following test conditions |VI – VO| = 5 V and IO = 0.5 A. All characteristics are measured with a 0.1- µF capacitor across the input and a 1-µF capacitor across the output. 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. ‡ Input regulation is expressed here as the percentage change in output voltage per 1-V change at the input. |
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