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LX8221DIDU-TR Datasheet(PDF) 3 Page - Microsemi Corporation |
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LX8221DIDU-TR Datasheet(HTML) 3 Page - Microsemi Corporation |
3 / 9 page Microsemi Integrated Products Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 3 Copyright © 2000 Rev. 1.1a, 2006-01-19 LX8221 Dual 150mA CMOS Low Dropout Regulator PRODUCTION DATA SHEET TM ® RECOMM END E D O P ERATING CONDITIONS LX8221 Parameter Symbol Min Typ Max Units Input Operating Voltage Range (Note 1) VIN1, VIN2 2.5 6 V Enable Input Voltage Range EN1/2 VIN + 0.3V V Continuous Output Current Range I OUT 1, IOUT1 150 mA Input Capacitor (VIN to GND) CIN 1.0* µF Output Capacitor (VOUT to GND) COUT 1.0* 2.2 µF Note 1: The minimum VIN has to meet two conditions VIN > 2.5V and VIN > VOUT + VDROPOUT, at high line voltage conditions output current may be limited to less than 150mA due to the power dissipation. * Size your output capacitor to meet the transient loading requirement. If you have a very dynamic load, a lower ESR and larger value capacitor will improve the response to these load steps. ELECTRICAL CHA RACTERISTICS Unless otherwise specified, the following specifications apply over the operating ambient temperature -40 °C ≤ T A ≤ 85°C except where otherwise noted. Test conditions: VIN = VOUT + 0.5V; IOUT =10mA; CIN = 1µF; COUT = 1µF; TJ = TA using low duty cycle pulse testing methods. LX8221 Parameter Symbol Test Conditions Min Typ Max Units TJ = 25°C -1 1 Output Voltage (2.5, 2.7, 3.0, ADJ) VOUT1/2 0mA ≤ I OUT1/2 ≤ 100mA, (V OUT1/2 + 0.5V) ≤ V IN ≤ 6V -2.5 2.5 % TJ = 25°C 1.163 1.187 Adjust Reference Voltage VADJ 0mA ≤ I OUT1/2 ≤ 100mA, 2.85V ≤ V IN ≤ 6V 1.140 1.175 1.210 V Line Regulation ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ Δ Δ IN O V V VRV (VOUT1/2 + 0.5V) ≤ V IN ≤ 5V, I OUT1/2 = 0.1mA 0.04 0.15 %/V TJ = 25°C, 0.5mA ≤ I OUT1/2 ≤ 150mA 0.5 Load Regulation ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ Δ Δ O O I V VRI 0.5mA ≤ I OUT1/2 ≤ 100mA 1.5 %VNOM ILOAD1/2 = 1mA, ΔVO = -1% 0.050 ILOAD1/2 = 50mA, ΔVO = -1% 0.175 ILOAD1/2 = 100mA, ΔVO = -1% 0.175 0.3 Dropout Voltage () O IN V V − (Note 2) VDO ILOAD1/2 = 150mA, ΔVO = -1% 0.25 0.4 V IGND EN1 = High, EN2 = High 280 440 Ground Pin Current ISTBY EN1 = Low, EN2 = Low 1 µA Adjust Input Bias Current IADJ VADJ = 1.25V 100 nA Enable Pin Current IEN VEN1/2 = VIN 100 nA VEN(IH) 2.0 Enable Threshold VEN(IL) 0.4 V Short Circuit Current Limit IOUT(SC) VOUT1 = 0V, VOUT2 = 0V 400 mA Power Supply Rejection Ratio PSRR TJ = 25°C, f = 120Hz 50 dB Output Noise eN TJ = 25°C, COUT = 10µF,CBYPASS = 470pF 50 µV Thermal Shutdown Temperature TSD 170 °C Note 2: Dropout voltage is defined as the input to output differential at which the output voltage drops 1% below the nominal value. Dropout voltage specification applies only to output voltages greater than 2.8V. For output voltages below 2.8V, the dropout voltage is nothing but the input to output differential, since the minimum input voltage is 2.8V. |
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