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LT1965T Datasheet(PDF) 3 Page - Linear Technology |
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LT1965T Datasheet(HTML) 3 Page - Linear Technology |
3 / 16 page LT1965 3 1965f ELECTRICAL CHARACTERISTICS 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: Absolute maximum input to output differential voltage is not achievable with all combinations of rated IN pin and OUT pin voltages. With the IN pin at 22V, the OUT pin may not be pulled below 0V. The total measured voltage from IN to OUT must not exceed ±22V. Note 3: The LT1965 is tested and specified under pulse load conditions such that TJ ≅ TA. The LT1965E 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 LT1965I is guaranteed over the full –40°C to 125°C operating junction temperature range. Note 4: The LT1965 is tested and specified for these conditions with the ADJ connected to the OUT pin. PARAMETER CONDITIONS MIN TYP MAX UNITS Minimum Input Voltage (Notes 4, 12) ILOAD = 0.5A ILOAD = 1.1A ● 1.65 1.8 2.3 V V ADJ Pin Voltage (Notes 4, 5) VIN = 2.1V, ILOAD = 1mA 2.3V < VIN < 20V, 1mA < ILOAD < 1.1A ● 1.182 1.164 1.20 1.20 1.218 1.236 V V Line Regulation (Note 4) ΔVIN = 2.1V to 20V, ILOAD = 1mA ● 38 mV Load Regulation VIN = 2.3V, ΔILOAD = 1mA to 1.1A VIN = 2.3V, ΔILOAD = 1mA to 1.1A ● 4.25 8 16 mV mV Dropout Voltage VIN = VOUT(NOMINAL) (Notes 6, 7, 12) ILOAD = 1mA ILOAD = 1mA ● 0.05 0.08 0.14 V V ILOAD = 100mA ILOAD = 100mA ● 0.10 0.175 0.28 V V ILOAD = 500mA ILOAD = 500mA ● 0.19 0.25 0.36 V V ILOAD = 1.1A ILOAD = 1.1A ● 0.29 0.36 0.49 V V GND Pin Current VIN = VOUT(NOMINAL) + 1V (Notes 6, 8) ILOAD = 0mA ILOAD = 1mA ILOAD = 100mA ILOAD = 500mA ILOAD = 1.1A ● ● ● ● ● 0.5 0.6 2.2 8.2 21 1.1 1.5 5.5 20 40 mA mA mA mA mA Output Voltage Noise COUT = 10μF, ILOAD = 1.1A, BW = 10Hz to 100kHz 40 μVRMS ADJ Pin Bias Current (Notes 4, 9) 1.3 4.5 μA Shutdown Threshold VOUT = Off to On VOUT = On to Off ● ● 0.2 0.85 0.45 2V V ⎯S⎯H⎯D⎯N Pin Current (Note 10) V⎯S⎯H⎯D⎯N = 0V V⎯S⎯H⎯D⎯N = 20V 0.01 5.5 1 10 μA μA Quiescent Current in Shutdown VIN = 6V, V⎯S⎯H⎯D⎯N = 0V 0.01 1 μA Ripple Rejection VIN – VOUT = 1.5V (AVG), VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz, ILOAD = 0.75A 57 75 dB Current Limit VIN = 7V, VOUT = 0 VIN = VOUT(NOMINAL) + 1V, ΔVOUT = -0.1V (Note 6) ● 1.2 2A A Input Reverse Leakage Current VIN = –20V, VOUT = 0 1 mA Reverse Output Current (Note 11) VOUT = 1.2V, VIN < 1.2V (Note 4) 175 400 μA The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3) Note 5: Maximum junction temperature limits operating conditions. The regulated output voltage specification does not apply for all possible combinations of input voltage and output current. Limit the output current range if operating at the maximum input voltage. Limit the input-to-output voltage differential if operating at the maximum output current. Note 6: To satisfy minimum input voltage requirements, the LT1965 is tested and specified for these conditions with an external resistor divider (bottom 4.02k, top 4.32k) for an output voltage of 2.5V. The external resistor divider adds 300μA of output DC load current. 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 equals: (VIN – VDROPOUT) Note 8: GND pin current is tested with VIN = VOUT(NOMINAL) + 1V and a current source load. GND pin current increases slightly in dropout. See GND pin current curves in the Typical Performance Characteristics section. |
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