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LM5009MM データシート(PDF) 5 Page - Texas Instruments |
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LM5009MM データシート(HTML) 5 Page - Texas Instruments |
5 / 26 page LM5009 www.ti.com SNVS402H – FEBRUARY 2006 – REVISED OCTOBER 2015 6.5 Electrical Characteristics Typical limits are for TJ = 25°C only, and all maximum and minimum limits apply over the junction temperature (TJ) range of –40°C to +125°C. Minimum and maximum limits are specified through test, design, or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise stated, the following conditions apply: VIN = 48 V and RON = 200 kΩ. (1). PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VCC SUPPLY VCC reg VCC regulator output 6.6 7 7.4 V VCC current limit (2) 9.5 mA VCC undervoltage lockout voltage 6.3 V (VCC increasing) VCC undervoltage hysteresis 200 mV VCC UVLO delay (filter) 100-mV overdrive 10 µs IIN operating current Non-switching, FB = 3 V 485 675 µA IIN shutdown current RON/SD = 0 V 76 150 µA SWITCH CHARACTERISTICS Buck switch Rds(on) ITEST = 200 mA (3) 2.0 4.4 Ω Gate drive UVLO VBST − VSW rising 3.4 4.5 5.5 V Gate drive UVLO hysteresis 430 mV CURRENT LIMIT Current limit threshold 0.25 0.31 0.37 A Current limit response time Iswitch overdrive = 0.1-A time to switch off 400 ns OFF time generator (test 1) FB = 0 V, RCL = 100 kΩ 35 µs OFF time generator (test 2) FB = 2.3 V, RCL = 100 kΩ 2.56 µs ON TIME GENERATOR TON - 1 VIN = 10 V, RON = 200 kΩ 2.15 2.77 3.5 µs TON - 2 VIN = 95 V, RON = 200 kΩ 200 300 420 ns Remote shutdown threshold Rising 0.4 0.7 1.05 V Remote shutdown hysteresis 35 mV MINIMUM OFF TIME Minimum off timer FB = 0 V 300 ns REGULATION AND OV COMPARATORS FB reference threshold Internal reference, trip point for switch on 2.445 2.5 2.550 V FB overvoltage threshold Trip point for switch off 2.875 V FB bias current 1 nA THERMAL SHUTDOWN Tsd Thermal shutdown temperature 165 °C Thermal shutdown hysteresis 25 °C (1) All electrical characteristics having room temperature limits are tested during production with TA = TJ = 25°C. All hot and cold limits are specified by correlating the electrical characteristics to process and temperature variations and applying statistical process control. (2) The VCC output is intended as a self bias for the internal gate drive power and control circuits. Device thermal limitations limit external loading. (3) For devices procured in the WSON-8 package, the Rds(on) limits are specified by design characterization data only. Copyright © 2006–2015, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM5009 |
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