Datenblatt-Suchmaschine für elektronische Bauteile |
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LM2694MTX Datenblatt(PDF) 4 Page - National Semiconductor (TI) |
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LM2694MTX Datenblatt(HTML) 4 Page - National Semiconductor (TI) |
4 / 19 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. VIN to RTN 33V BST to RTN 47V SW to RTN (Steady State) -1.5V ESD Rating (Note 2) Human Body Model 2kV BST to VCC 33V VIN to SW 33V BST to SW 14V VCC to RTN 14V SGND to RTN -0.3V to +0.3V SS to RTN -0.3V to 4V All Other Inputs to RTN -0.3 to 7V Storage Temperature Range -65˚C to +150˚C JunctionTemperature 150˚C Operating Ratings (Note 1) VIN 8.0V to 30V Junction Temperature −40˚C to + 125˚C Electrical Characteristics Specifications with standard type are for T J = 25˚C only; limits in boldface type apply over the full Operating Junction Temperature (T J) range. Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm at T J = 25˚C, and are provided for reference purposes only. Unless otherwise stated the following conditions apply: V IN = 24V, RON = 200k Ω. See (Note 5). Symbol Parameter Conditions Min Typ Max Units Start-Up Regulator, V CC V CCReg V CC regulated output 6.6 7 7.4 V V IN-VCC dropout voltage I CC = 0 mA, V CC = UVLOVCC + 250 mV 1.3 V V CC output impedance 0 mA ≤ I CC ≤ 5 mA, V IN = 8V 175 Ω V CC current limit (Note 3) V CC =0V 9 mA UVLO VCC V CC under-voltage lockout threshold V CC increasing 5.7 V UVLO VCC hysteresis V CC decreasing 150 mV UVLO VCC filter delay 100 mV overdrive 3 µs I IN operating current Non-switching, FB = 3V 0.5 0.8 mA I IN shutdown current RON/SD = 0V 90 180 µA Switch Characteristics Rds(on) Buck Switch Rds(on) I TEST = 200 mA 0.5 1.0 Ω UVLO GD Gate Drive UVLO V BST -VSW Increasing 3.0 4.4 5.5 V UVLO GD hysteresis 490 mV Softstart Pin Pull-up voltage 2.5 V Internal current source 12 µA Current Limit I LIM Threshold Current out of ISEN 0.5 0.62 0.74 A Resistance from ISEN to SGND 180 m Ω Response time 150 ns On Timer t ON - 1 On-time V IN = 10V, RON = 200 k Ω 2.1 2.8 3.6 µs t ON - 2 On-time V IN = 30V, RON = 200 k Ω 900 ns Shutdown threshold Voltage at RON/SD rising 0.45 0.8 1.2 V Threshold hysteresis Voltage at RON/SD falling 35 mV Off Timer t OFF Minimum Off-time 265 ns Regulation and Over-Voltage Comparators (FB Pin) V REF FB regulation threshold SS pin = steady state 2.440 2.5 2.550 V FB over-voltage threshold 2.9 V www.national.com 4 |
Ähnliche Teilenummer - LM2694MTX |
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Ähnliche Beschreibung - LM2694MTX |
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