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LM34922 데이터시트(PDF) 4 Page - Texas Instruments |
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LM34922 데이터시트(HTML) 4 Page - Texas Instruments |
4 / 19 page LM34922 SNVS813A – JUNE 2012 – REVISED MARCH 2013 www.ti.com Electrical Charateristics (continued) Specifications with standard type are for TJ = 25°C only; limits in boldface type apply over the full Operating Junction Temperature (TJ) range. 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 = 50kΩ. Symbol Parameter Conditions Min Typ Max Units VILIM Threshold voltage at CS -146 -130 -115 mV CS bias current FB = 3V -120 µA CSG bias current FB = 3V -35 µA On Timer, RT Pin tON - 1 On-time VIN = 12V, RT = 50kΩ 150 200 250 ns tON - 2 On-time (current limit) VIN = 12V, RT = 50kΩ 100 ns tON - 3 On-time VIN = 12V, RT = 301kΩ 1020 ns tON - 4 On-time VIN = 9V, RT = 30.9kΩ 130 171 215 ns tON - 5 On-time VIN = 12V, RT = 30.9kΩ 105 137 170 ns tON - 6 On-time VIN = 16V, RT = 30.9kΩ 79 109 142 ns Off Timer tOFF Minimum Off-time (LM34922) 90 150 208 ns Regulation Comparator (FB Pin) VREF FB regulation threshold SS pin = steady state 2.46 2.51 2.56 V FB bias current FB = 3V 100 nA Power Good (PGD pin) Threshold at FB, with respect to VREF FB increasing 91 95 % Threshold hysteresis 3.3 % PGDVOL Low state voltage IPGD = 1mA, FB = 0V 125 180 mV PGDLKG Off state leakage VPGD = 7V, FB = 3V 0.1 µA Thermal Shutdown TSD Thermal shutdown Junction temperature increasing 155 °C Thermal shutdown hysteresis 20 °C Thermal Resistance θJA Junction to Ambient, 0 LFPM Air Flow (1) 48 °C/W θJC Junction to Case,(1) 10 °C/W (1) JEDEC test board description can be found in JESD 51-5 and JESD 51-7. 4 Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: LM34922 |
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유사한 설명 - LM34922_15 |
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