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LM3218 データシート(PDF) 4 Page - National Semiconductor (TI) |
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LM3218 データシート(HTML) 4 Page - National Semiconductor (TI) |
4 / 16 page System Characteristics The following spec table entries are guaranteed by design providing the component values in the typical application circuit are used (L = LTCC Inductor, 2.6 µH; DCR = 150 m Ω; C IN = 10 µF, 6.3V, 0603, TDK C1608X5R0J106K; C OUT = 4.7 µF, 6.3V, 0603, C1608X5R0J475M). These parameters are not guaranteed by production testing. Min and Max values are specified over the ambient temperature range T A = −30°C to 85°C. Typical values are specified at PV IN = VDD = EN = 3.6V and TA = 25°C unless otherwise specified. Symbol Parameter Conditions Min Typ Max Units T RESPONSE (Rise Time) Time for V OUT to rise from 0.8V to 3.4V (to reach 3.35V) V IN = 4.2V R LOAD = 5.5Ω 25 40 µs T RESPONSE (Fall Time) Time for V OUT to fall from 3.4V to 0.8V V IN = 4.2V R LOAD = 15Ω 35 45 µs C CON V CON input capacitance V CON = 1V, VIN=2.7V to 5.5V Test frequency = 100 KHz 5 10 pF C EN EN input capacitance EN = 2V, V IN= 2.7V to 5.5V Test frequency = 100 KHz 5 10 pF V CON (S>L) R DSON(P) management threshold Threshold for PFET RDSON(P) to change from 960 m Ω to 140 mΩ 0.39 0.42 0.45 V V CON (L>S) R DSON(P) management threshold Threshold for PFET RDSON(P) to change from 140 m Ω to 960 mΩ 0.37 0.40 0.43 V I OUT, MAX Maximum Output Current V IN = 2.7V to 5.5V V CON = 0.45V to 1.44V 650 mA V IN = 2.7V to 5.5V V CON = 0.32V to 0.45V 400 mA Linearity Linearity in control range 0.32V to 1.44V V IN = 3.9V (Note 14) Monotonic in nature −3 +3 % −50 +50 mV T ON Turn on time (time for output to reach 97% of final value after Enable low-to- high transition) EN = Low to High V IN = 4.2V, VOUT = 3.4V, I OUT ≤ 1mA 40 60 µs η Efficiency V IN = 3.6V, VOUT = 0.8V I OUT = 90mA 81 % V IN = 3.6V, VOUT = 1.5V I OUT = 150mA 89 % V IN = 3.9V, VOUT = 3.4V I OUT = 400 mA 95 % V O_ripple Ripple voltage at no pulse skip condition V IN = 2.7V to 4.5V, VOUT = 0.8V to 3.4V, Differential voltage = V IN - VOUT > 1V, I OUT = 0 mA to 400 mA (Note 12) 10 mVp-p Ripple voltage at pulse skip condition V IN = 5.5V to dropout, VOUT = 3.4V, I OUT = 650 mA (Note 12) 60 mVp-p Line_tr Line transient response V IN = 3.6V to 4.2V, T R = TF = 10 µs, V OUT = 0.8V, IOUT = 100 mA 50 mVpk Load_tr Load transient response V IN = 3.1/3.6/4.5V, VOUT = 0.8V, I OUT = 50 mA to 150 mA 50 mVpk Max Duty cycle Maximum duty cycle 100 % www.national.com 4 |
同様の部品番号 - LM3218 |
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同様の説明 - LM3218 |
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