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データシートサーチシステム |
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データシートサーチシステム |
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LM20136 データシート(PDF) 4 Page - Texas Instruments |
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LM20136 データシート(HTML) 4 Page - Texas Instruments |
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4 / 32 page  LM20136 SNVS564B – JANUARY 2009 – REVISED APRIL 2013 www.ti.com Electrical Characteristics (continued) Unless otherwise stated, the following conditions apply: AVIN = PVIN = VIN = 5V. Limits in standard type are for TJ = 25°C only, limits in bold face type 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. Symbol Parameter Conditions Min Typ Max Unit IFB Feedback pin bias current VFB = 0.8V 1 100 nA ICOMP_SRC COMP Output Source Current VFB = 0.6V, VCOMP = 0.5V 80 100 µA ICOMP_SNK COMP Output Sink Current VFB = 1.0V, VCOMP = 0.6V 80 100 µA gm Error Amplifier Transconductance ICOMP = ± 50 µA 450 510 600 µmho AVOL Error Amplifier Voltage Gain 2000 V/V Power Good VOVP Over Voltage Protection Rising Threshold With respect to VFB 105 108 111 % VOVP_HYS Over Voltage Protection Hysteresis 2 3 % VPGTH PGOOD Rising Threshold With respect to VFB 92 94 96 % VPGHYS PGOOD Falling Hysteresis 2 3 % TPGOOD PGOOD deglitch time 16 µs IOL PGOOD Low Sink Current VPGOOD = 0.4V 0.6 1 mA IOH PGOOD High Leakage Current VPGOOD = 5V 5 100 nA Enable VIH_EN EN Pin Turn on Threshold VEN Rising 1.08 1.18 1.28 V VEN_HYS EN Pin Hysteresis 66 mV Thermal Shutdown TSD Thermal Shutdown 160 °C TSD_HYS Thermal Shutdown Hysteresis 10 °C Thermal Resistance θJA Junction to Ambient See(1) 25 °C/W (1) The maximum allowable power dissipation is a function of the maximum junction temperature, TJ_MAX, the junctions-to-ambient thermal resistance, θJA, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is calculated using: PD_MAX = (TJ_MAX – TA)/θJA. The maximum power dissipations of 2.6W is determined using TA = 25°C, θJA = 25°C/W, and TJ_MAX = 125°C. The θJA specification of 25°C/W listed in the electrical characteristics table is measured with the part surface mounted to a 2" x 2" FR4 4 layer board. See Figure 37 for more detailed θJA information. 4 Submit Documentation Feedback Copyright © 2009–2013, Texas Instruments Incorporated Product Folder Links: LM20136 |
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