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LM34930 Datasheet(PDF) 4 Page - Texas Instruments |
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LM34930 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 24 page LM34930 SNVS571B – MAY 2008 – REVISED APRIL 2013 www.ti.com Electrical Characteristics (continued) Specifications with standard type are for TJ = 25°C only; limits in boldface type apply over the Operating 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 = 12V, RT = 50 kΩ. Symbol Parameter Conditions Min Typ Max Units Current Limit ILIM Threshold VIN = 8V 0.95 1.15 1.35 A VIN = 30V 0.90 1.1 1.30 Resistance from ISEN to SGND 98 m Ω Over-Voltage Indicator nOVTH Threshold voltage at VIN VIN increasing 17.5 19 20.0 V nOVHYS Threshold hysteresis 1.95 V nOVVOL Output low voltage InoV = 1 mA, VIN = 22V 100 200 mV nOVLKG Off state leakage VnoV = 7V 0.1 µA On Timer tON - 1 On-time VIN = 10V, RT = 50 kΩ 190 292 430 ns tON - 2 On-time VIN = 33V, RT = 50 kΩ 127 ns tON - 3 On-time (current limit) VIN = 10V, RT = 50 kΩ 150 ns Off Timer tOFF Minimum Off-time 90 ns Regulation Comparator (FB Pin) VREF FB regulation threshold SS Pin = steady state 2.470 2.52 2.575 V FB bias current 1 nA Input Over-voltage Shutdown VIN(OV) Threshold voltage at VIN VIN increasing 34.0 36 38.3 V VIN(OV)-HYS Hysteresis 0.4 V Thermal Shutdown TSD Thermal shutdown TJ increasing 155 °C Thermal shutdown hysteresis 20 °C Thermal Resistance θJA Junction to Ambient JEDEC 4 layer board(2) 65 °C/W 0 LFPM Air Flow (2) JEDEC test board description can be found in JESD 51-7. 4 Submit Documentation Feedback Copyright © 2008–2013, Texas Instruments Incorporated Product Folder Links: LM34930 |
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