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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LM25005 датащи(PDF) 5 Page - National Semiconductor (TI) |
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LM25005 датащи(HTML) 5 Page - National Semiconductor (TI) |
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5 / 21 page  Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. V IN to GND 45V BST to GND 60V PRE to GND 45V SW to GND (Steady State) -1.5V BST to V CC 45V V CC to GND 14V BST to SW 14V OUT to GND Limited to Vin SD, SYNC, SS, FB to GND 7V ESD Rating (Note 2) Human Body Model 2kV Storage Temperature Range -65˚C to +150˚C Operating Ratings (Note 1) V IN 7V to 42V Operation Junction Temperature −40˚C to + 125˚C Electrical Characteristics Specifications with standard typeface are for T J = 25˚C, and those with boldface type apply over full Operating Junction Temperature range.V IN = 24V, RT = 32.4k Ω unless otherwise stated. (Note 3) Symbol Parameter Conditions Min Typ Max Units STARTUP REGULATOR VccReg Vcc Regulator Output 6.85 7.15 7.45 V Vcc LDO Mode turn-off 9 V Vcc Current Limit Vcc = 0V 20 mA VCC SUPPLY Vcc UVLO Threshold (Vcc increasing) 5.95 6.35 6.75 V Vcc Undervoltage Hysteresis 1 V Bias Current (Iin) FB = 1.3V 3 4.5 mA Shutdown Current (Iin) SD = 0V 50 85 µA SHUTDOWN THRESHOLDS Shutdown Threshold (SD Increasing) 0.5 0.7 0.9 V Shutdown Hysteresis 0.1 V Standby Threshold (Standby Increasing) 1.18 1.225 1.27 V Standby Hysteresis 0.1 V SD Pull-up Current Source 5 µA SWITCH CHARACTERSICS Buck Switch Rds(on) 160 320 m Ω BOOST UVLO 3.8 V BOOST UVLO Hysteresis 0.56 V Pre-charge Switch Rds(on) 75 Ω Pre-charge Switch on-time 275 ns CURRENT LIMIT Cycle by Cycle Current Limit RAMP = 0V 3 3.5 4.25 A Cycle by Cycle Current Limit Delay RAMP = 2.5V 100 ns SOFT-START SS Current Source 7 10 14 µA OSCILLATOR Frequency1 180 200 220 KHz Frequency2 RT = 11k Ω 425 485 525 KHz SYNC Source Impedance 10 k Ω SYNC Sink Impedance 160 Ω SYNC Threshold (falling) 1.4 V Upper SYNC Frequency 550 KHz SYNC Pulse Width Minimum 15 ns www.national.com 5 |
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