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LM34910 Scheda tecnica(PDF) 3 Page - Texas Instruments |
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LM34910 Scheda tecnica(HTML) 3 Page - Texas Instruments |
3 / 18 page LM34910 www.ti.com SNVS297B – OCTOBER 2004 – REVISED MARCH 2013 Absolute Maximum Ratings (1) (2) VIN to GND 40V BST to GND 50V SW to GND (Steady State) -1.5V ESD Rating(3) Human Body Model 2kV BST to VCC 40V VIN to SW 40V BST to SW 14V VCC to GND 14V SGND to RTN -0.3V to +0.3V Current out of ISEN See Text SS to RTN -0.3V to 4V All Other Inputs to GND -0.3 to 7V Storage Temperature Range -55°C to +150°C JunctionTemperature 150°C (1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics. (2) For detailed information on soldering plastic WSON packages, refer to the Packaging Data Book available from National Semiconductor Corporation. (3) The human body model is a 100pF capacitor discharged through a 1.5k Ω resistor into each pin. Operating Ratings (1) VIN 8.0V to 36V Junction Temperature −40°C to + 125°C (1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics. Electrical Characteristics Specifications with standard typeface are for TJ = 25°C, and those with boldface type apply over full Operating Junction Temperature range. VIN = 24V, RON = 200k unless otherwise stated (1). Symbol Parameter Conditions Min Typ Max Units Start-Up Regulator, VCC VCCReg VCC regulated output 6.6 7 7.4 V ICC = 0 mA, VIN-VCC dropout voltage 1.4 V VCC = VCCReg - 100 mV VCC output impedance 0 mA ≤ ICC ≤ 5 mA 140 Ω VCC current limit (2) VCC = 0V 9 mA VCC under-voltage lockout VCC increasing UVLOVCC 5.8 V threshold UVLOVCC hysteresis VCC decreasing 150 mV UVLOVCC filter delay 100 mV overdrive 3 µs IIN operating current Non-switching, FB = 3V 0.63 1 mA IIN shutdown current RON/SD = 0V 80 250 µA Switch Characteristics Rds(on) Buck Switch Rds(on) ITEST = 200 mA 0.45 0.95 Ω UVLOGD Gate Drive UVLO VBST - VSW Increasing 3.0 4.3 5.5 V UVLOGD hysteresis 440 mV Softstart Pin Pull-up voltage 2.5 V Internal current source 11.5 µA (1) Typical specifications represent the most likely parametric norm at 25°C operation. (2) VCC provides self bias for the internal gate drive and control circuits. Device thermal limitations limit external loading Copyright © 2004–2013, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LM34910 |
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