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AMC8877-3.2DBT Datasheet(PDF) 4 Page - List of Unclassifed Manufacturers |
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AMC8877-3.2DBT Datasheet(HTML) 4 Page - List of Unclassifed Manufacturers |
4 / 9 page AMC DOC. #: AMC8877_A (LF) AMC8877 Jun 2004 LOW NOISE 300mA LOW DROPOUT REGULATOR RECOMMENDED OPERATING CONDITIONS Recommended Operating Conditions Parameter Symbol Min. Typ. Max. Units Input Voltage VIN 2.5 6.5 V Load Current I O 5 300 mA Input Capacitor (VIN to GND) 1.0 µF Output Capacitor with ESR of 10 Ω max., (VOUT to GND) 1.0 µF Note: 1. CIN: A 1.0 µF capacitor (or larger) should be placed between VIN to GND. 2. COUT: A 1.0 µF (or larger) capacitor is recommended between VOUT and GND for stability and improving the regulator’s transient response. The ESR (Effective Series Resistance.) of this capacitor has no effect on regulator stability, but low ESR capacitors improve high frequency transient response. The value of this capacitor may be increased without limit, but values larger than 10uF tend to increase the settling time after a step change in input voltage or output current. The part may oscillate without the capacitor. Any type of capacitor can be used, but not Aluminum electrolytics when operating below -25 OC, The capacitance may be increased without limit. ELECTRICAL CHARACTERISTICS Unless otherwise specified, these specifications apply over the operating ambient temperature of 0 °C to +70 °C with VIN = VOUT(NOMIAL) + 0.5V, and are for DC characteristics only. (Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.) AMC8877 Parameter Symbol Test Conditions Min Typ. Max Units IOUT = 10mA, TA = +25 OC -1.4 +1.4 Output Voltage Accuracy ∆VOUT IOUT = 10 to 300mA -3 +2 % Maximum Output Current IOUT 300 mA Current Limit ILIMIT 330 mA IOUT = 10mA 1.6 9 Ground Pin Current IQ IOUT = 300mA 1.7 9 µA IOUT = 50mA 50 120 IOUT = 150mA 165 300 Dropout Voltage VDROP IOUT = 300mA 450 650 mV Line Regulation ∆VOI VIN = (VOUT + 0.1V) to 6.5V, IOUT = 1mA -0.15 0 0.15 %/V Load Regulation ∆VOL IOUT = 10 to 300mA, COUT = 10µF 40 80 mV Ripple Rejection PSRR f=100Hz, IL=100uA 50 dB COUT = 10µF 30 Output Voltage Noise en f = 10Hz - 100KHz, CBP = 0.01µF COUT = 100µF 20 µVRMS Shutdown Input Threshold High VSIH VIN = 2.5V to 5.5V 2.0 V Shutdown Input Threshold Low VSIL VIN = 2.5V to 5.5V 0.4 V TA = +25 OC 0.01 1 Shutdown Supply Current IQ(SHDN) VOUT = 0V TA = +85 OC 0.2 µA TA = +25 OC 0.01 100 Shutdown Input Bias Current ISHDN VSHDN = VIN TA = +85 OC 0.5 nA TA = +25 OC 6 Shutdown Exit Delay tdelay CBP = 0.1µF, COUT = 1µF, No load TA = +85 OC 6 ms Thermal Shutdown Temperature TSHDN +150 OC Note: 1. Current limit is measured at constant junction temperature, using pulse ON time. 2. Dropout is measured at constant junction temperature, using pulse ON time, and criterion is VOUT inside target value ± 2 %. 3. Regulation is measured at constant junction temperature, using pulsed ON time. Copyright © 2002, ADD Microtech Corp. 4 www.addmtek.com |
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