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Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS2908 ELECTRICAL CHARACTERISTICS Electrical Characteristics at IOUT = 0 mA, and TJ = +25°C unless otherwise specified. Parameter Device Conditions Min Typ Max Units Dropout Voltage (VIN - VOUT) AMS2908-1.5/-2.5/-2.85/ -3.3/-5.0 ∆V OUT , ∆V REF = 1%, IOUT = 800mA (Note 4) 1.1 1.3 V Current Limit AMS2908-1.5/-2.5/-2.85/ -3.3/-5.0 (VIN - VOUT) = 5V 900 1,100 1,500 mA Minimum Load Current AMS2908 (VIN - VOUT) = 12V (Note 5) 5 10 mA Quiescent Current AMS2908-1.5/-2.5/-2.85/ -3.3/-5.0 VIN ≤ 12V 5 10 mA Ripple Rejection AMS2908 f =120Hz , COUT = 25 µF Tantalum, I OUT = 800mA, (VIN-VOUT ) = 3V, CADJ =25 µF 60 75 dB AMS2908-1.5 f =120Hz , COUT = 25 µF Tantalum, I OUT = 800mA, VIN = 6V 60 72 dB AMS2908-2.5 f =120Hz , COUT = 25 µF Tantalum, I OUT = 800mA, VIN = 6V 60 72 dB AMS2908-2.85 f =120Hz , COUT = 25 µF Tantalum, I OUT = 800mA, VIN = 6V 60 72 dB AMS2908-3.3 f =120Hz , COUT = 25 µF Tantalum, I OUT = 800mA VIN = 6.3V 60 72 dB AMS2908-5.0 f =120Hz , COUT = 25 µF Tantalum, I OUT = 800mA VIN = 8V 60 68 dB Thermal Regulation AMS2908 TA = 25°C, 30ms pulse 0.008 0.04 %W Adjust Pin Current AMS2908 10mA ≤ I OUT ≤ 800mA , 1.5V≤ (V IN - VOUT) ≤ 12V 55 120 µA µA Adjust Pin Current Change AMS2908 10mA ≤ I OUT ≤ 800mA , 1.5V≤ (V IN - VOUT) ≤ 12V 0.2 5 µA Temperature Stability 0.5 % Long Term Stability TA =125°C, 1000Hrs 0.3 1 % RMS Output Noise (% of VOUT ) TA = 25°C , 10Hz ≤ f ≤ 10kHz 0.003 % Thermal Resistance Junction-to-Case 15 °C/W Parameters identified with boldface type apply over the full operating temperature range. Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. For guaranteed specifications and test conditions, see the Electrical Characteristics . The guaranteed specifications apply only for the test conditions listed. Note 2: Line and Load regulation are guaranteed up to the maximum power dissipation of 1.2 W. Power dissipation is determined by the input/output differential and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range. Note 3: See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead ~1/8” from the package. Note 4: Dropout voltage is specified over the full output current range of the device. Note 5: Minimum load current is defined as the minimum output current required to maintain regulation. When 1.5V ≤ (V IN - VOUT) ≤ 12V the device is guaranteed to regulate if the output current is greater than 10mA. |
