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LT1963AES8 Datasheet(PDF) 4 Page - Linear Technology |
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LT1963AES8 Datasheet(HTML) 4 Page - Linear Technology |
4 / 20 page 4 LT1963A Series 1963af TYPICAL PERFOR A CE CHARACTERISTICS OUTPUT CURRENT (A) 0 500 450 400 350 300 250 200 150 100 50 0 0.4 0.8 1.0 1963 • G01 0.2 0.6 1.2 1.4 1.6 TJ = 125 °C TJ = 25 °C OUTPUT CURRENT (A) 600 500 400 300 200 100 0 0 0.4 0.8 1.0 1963 • G02 0.2 0.6 1.2 1.4 1.6 TJ ≤ 125°C TJ ≤ 25°C TEST POINTS TEMPERATURE ( °C) –50 500 450 400 350 300 250 200 150 100 50 0 0 50 75 1963 G03 –25 25 100 125 IL = 100mA IL = 1mA IL = 0.5A IL = 1.5A Typical Dropout Voltage Guaranteed Dropout Voltage Dropout Voltage Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: Absolute maximum input to output differential voltage can not be achieved with all combinations of rated IN pin and OUT pin voltages. With the IN pin at 20V, the OUT pin may not be pulled below 0V. The total measured voltage from IN to OUT can not exceed ±20V. Note 3: The LT1963A regulators are tested and specified under pulse load conditions such that TJ ª TA. The LT1963A is 100% tested at TA = 25 ∞C. Performance at –40∞C and 125∞C is assured by design, characterization and correlation with statistical process controls. Note 4: The LT1963A (adjustable version) is tested and specified for these conditions with the ADJ pin connected to the OUT pin. Note 5: Operating conditions are limited by maximum junction temperature. The regulated output voltage specification will not apply for all possible combinations of input voltage and output current. When operating at maximum input voltage, the output current range must be limited. When operating at maximum output current, the input voltage range must be limited. Note 6: To satisfy requirements for minimum input voltage, the LT1963A (adjustable version) is tested and specified for these conditions with an external resistor divider (two 4.12k resistors) for an output voltage of 2.4V. The external resistor divider will add a 300 mA DC load on the output. Note 7: Dropout voltage is the minimum input to output voltage differential needed to maintain regulation at a specified output current. In dropout, the output voltage will be equal to: VIN – VDROPOUT. Note 8: GND pin current is tested with VIN = VOUT(NOMINAL) + 1V and a current source load. The GND pin current will decrease at higher input voltages. Note 9: ADJ pin bias current flows into the ADJ pin. Note 10: SHDN pin current flows into the SHDN pin. Note 11: Reverse output current is tested with the IN pin grounded and the OUT pin forced to the rated output voltage. This current flows into the OUT pin and out the GND pin. Note 12. For the LT1963A, LT1963A-1.5 and LT1963A-1.8 dropout voltage will be limited by the minimum input voltage specification under some output voltage/load conditions. Note 13. For the ST package, the input reverse leakage current increases due to the additional reverse leakage current for the SHDN pin, which is tied internally to the IN pin. The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25 ∞C. (Note 2) ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS MIN TYP MAX UNITS Input Reverse Leakage Current (Note 13) Q, T, S8 Packages VIN = – 20V, VOUT = 0V ● 1mA ST Package VIN = – 20V, VOUT = 0V ● 2mA Reverse Output Current (Note 11) LT1963A-1.5 VOUT = 1.5V, VIN < 1.5V 600 1200 mA LT1963A-1.8 VOUT = 1.8V, VIN < 1.8V 600 1200 mA LT1963A-2.5 VOUT = 2.5V, VIN < 2.5V 600 1200 mA LT1963A-3.3 VOUT = 3.3V, VIN < 3.3V 600 1200 mA LT1963A (Note 4) VOUT = 1.21V, VIN < 1.21V 300 600 mA |
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