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LM32 数据表(PDF) 2 Page - National Semiconductor (TI) |
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LM32 数据表(HTML) 2 Page - National Semiconductor (TI) |
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2 / 14 page  Absolute Maximum Ratings If MilitaryAerospace specified devices are required please contact the National Semiconductor Sales OfficeDistributors for availability and specifications Power Dissipation 500 mW V a Voltage 40V Collector Output Voltage 40V VREF Current 5 mA Trigger Voltage g 40V VADJ Voltage (Forced) 5V Logic Reverse Voltage 55V Output Short Circuit Duration (Note 1) Lead Temperature (Soldering 10 sec) 260 C Operating Temperature Range LM122 b 55 C s TA s a125 C LM322 0 C s TA s a70 C LM3905 0 C s TA s a70 C Electrical Characteristics (Note 2) Parameter Conditions LM122 LM322 LM3905 Units Min Typ Max Min Typ Max Min Typ Max Timing Ratio TA e 25 C 45V s Va s 40V 0626 0632 0638 0620 0632 0644 0620 0632 0644 Boost Tied to Va (Note 3) 0620 0632 0644 0620 0632 0644 Comparator Input TA e 25 C 45V s Va s 40V 03 10 03 15 05 15 nA Current Boost Tied to Va 30 100 30 100 nA Trigger Voltage TA e 25 C 45V s Va s 40V 12 16 2 12 16 2 12 16 2 V Trigger Current TA e 25 C VTRIG e 2V 25 25 25 m A Supply Current TA t 25 C 45V s Va s 40V 25 4 25 45 25 45 mA Timing Ratio 45V s Va s 40V 062 0644 061 0654 061 0654 Boost Tied to Va 062 0644 061 0654 Comparator Input 45V s Va s 40V b 55 b 22 b 25 25 nA Current Boost Tied to Va (Note 4) 100 150 nA Trigger Voltage 45V s Va s 40V 08 25 08 25 08 25 V Trigger Current VTRIG e 25V 200 200 200 m A Output Leakage VCE e 40V 155 m A Current Capacitor Saturation Rt t 1MX 25 25 25 mV Voltage Rt e 10 kX 25 25 25 mV Reset Resistance 150 150 150 X Reference Voltage TA e 25 C 3 315 33 3 315 33 3 315 33 V Reference Regulation 0 s IOUT s 3 mA 2050 2050 2050 mV 45V s Va s 40V 6 25 6 25 6 25 mV Collector Saturation IL e 8 mA 025 04 025 04 025 04 V Voltage IL e 50 mA 07 14 07 14 07 14 V Emitter Saturation TA e 25 C IL e 3 mA 18 22 18 22 18 22 V Voltage TA e 25 C IL e 50 mA 21 3 21 3 21 3 V Average Temperature Coefficient of Timing 0003 0003 0003 % C Ratio Minimum Trigger Width VTRIG e 3V 025 025 025 m s Note 1 Continuous output shorts are not allowed Short circuit duration at ambient temperatures up to 40 C may be calculated from t e 120VCE seconds where VCE is the collector to emitter voltage across the output transistor during the short Note 2 These specifications apply for TAMIN s TA s TAMAX unless otherwise noted Note 3 Output pulse width can be calculated from the following equation t e (Rt)(Ct) 1 b 2(0632 b r) b VC VREF) where r is timing ratio and VC is capacitor saturation voltage This reduces to t e (Rt)(Ct) for all but the most critical applications Note 4 Sign reversal may occur at high temperatures (l 100 C) where comparator input current is predominately leakage See typcial curves Note 5 Refer to RETS122X drawing of military LM122H version for specifications 2 |
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