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LT1764AEFE-2.5 Datasheet(PDF) 4 Page - Linear Technology |
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LT1764AEFE-2.5 Datasheet(HTML) 4 Page - Linear Technology |
4 / 20 page 4 LT1764A Series 1764afb Current Limit VIN = 7V, VOUT = 0V 4 A E Grade: LT1764A; LT1764A-1.5; ● 3.1 A VIN = 2.7V, ∆VOUT = – 0.1V MP Grade: LT1764A ● 3.1 A VIN = 2.8V, ∆VOUT = – 0.1V Input Reverse Leakage Current VIN = – 20V, VOUT = 0V ● 1mA Reverse Output Current (Note 10) LT1764A-1.5 VOUT = 1.5V, VIN < 1.5V 600 1200 µA LT1764A-1.8 VOUT = 1.8V, VIN < 1.8V 600 1200 µA LT1764A-2.5 VOUT = 2.5V, VIN < 2.5V 600 1200 µA LT1764A-3.3 VOUT = 3.3V, VIN < 3.3V 600 1200 µA LT1764A (Note 3) VOUT = 1.21V, VIN < 1.21V 300 600 µA Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LT1764A regulators are tested and specified under pulse load conditions such that TJ ≈ TA. The LT1764A (E grade) 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. The LT1764A (MP grade) is 100% tested and guaranteed over the –55 °C to 125 °C temperature range. Note 3: The LT1764A (adjustable version) is tested and specified for these conditions with the ADJ pin connected to the OUT pin. Note 4. 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 max- imum input voltage, the output current range must be limited. When operat- ing at maximum output current, the input voltage range must be limited. Note 5: To satisfy requirements for minimum input voltage, the LT1764A (adjustable version) is tested and specified for these conditions with an external resistor divider (two 4.12k resistors) for an output voltage of 2.42V. The external resistor divider will add a 300 µA DC load on the output. Note 6: 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 7: GND pin current is tested with VIN = VOUT(NOMINAL) + 1V or VIN = 2.7V (E grade) or VIN = 2.8V (MP grade), whichever is greater, and a current source load. The GND pin current will decrease at higher input voltages. Note 8: ADJ pin bias current flows into the ADJ pin. Note 9: SHDN pin current flows into the SHDN pin. Note 10: 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 11. For the LT1764A, LT1764A-1.5 and LT1764A-1.8 dropout voltage will be limited by the minimum input voltage specification under some output voltage/load conditions. Note 12. All combinations of absolute maximum input voltage and absolute maximum output voltage cannot be achieved. The absolute maximum differential from input to output is ±20V. For example, with VIN = 20V, VOUT cannot be pulled below ground. ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS MIN TYP MAX UNITS The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C. (Note 2) TYPICAL PERFOR A CE CHARACTERISTICS Typical Dropout Voltage OUTPUT CURRENT (A) 0 0 100 200 300 400 600 0.5 1.0 1.5 2.0 1764 G01 2.5 3.0 500 TJ = 125°C TJ = 25°C Guaranteed Dropout Voltage OUTPUT CURRENT (A) 0 700 600 500 400 300 200 100 0 1.5 2.5 1764 G02 0.5 1.0 2.0 3.0 = TEST POINTS TJ ≤ 125°C TJ ≤ 25°C TEMPERATURE ( °C) –50 400 500 600 25 75 1764 G03 300 200 –25 0 50 100 125 100 0 IL = 3A IL = 1.5A IL = 0.5A IL = 100mA IL = 1mA Dropout Voltage |
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