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LT1761ES5-1.5 Datasheet(PDF) 6 Page - Linear Technology |
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LT1761ES5-1.5 Datasheet(HTML) 6 Page - Linear Technology |
6 / 22 page LT1761 Series 6 1761sff ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS GND Pin Current VIN = VOUT(NOMINAL) (Notes 5, 7) ILOAD = 0mA ILOAD = 1mA ILOAD = 10mA ILOAD = 50mA ILOAD = 100mA l l l l l 20 55 230 1 2.2 45 100 400 2 4 μA μA μA mA mA Output Voltage Noise COUT = 10μF, CBYP = 0.01μF, ILOAD = 100mA, BW = 10Hz to 100kHz 20 μVRMS ADJ Pin Bias Current (Notes 3, 8) 30 100 nA Shutdown Threshold VOUT = Off to On VOUT = On to Off l l 0.25 0.8 0.65 2V V SHDN Pin Current (Note 9) VSHDN = 0V VSHDN = 20V l l 0 1 0.5 3 μA μA Quiescent Current in Shutdown VIN = 6V, VSHDN = 0V 0.01 0.1 μA Ripple Rejection (Note 3) VIN – VOUT = 1.5V (Avg), VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz, ILOAD = 50mA 55 65 dB Current Limit VIN = 7V, VOUT = 0V VIN = VOUT(NOMINAL) + 1V or 2.3V (Note 12), ΔVOUT = –5% l 110 200 mA mA Input Reverse Leakage Current VIN = –20V, VOUT = 0V l 1mA Reverse Output Current (Note 10) LT1761-1.2 LT1761-1.5 LT1761-1.8 LT1761-2 LT1761-2.5 LT1761-2.8 LT1761-3 LT1761-3.3 LT1761-5 LT1761 (Note 3) VOUT = 1.2V, VIN < 1.2V VOUT = 1.5V, VIN < 1.5V VOUT = 1.8V, VIN < 1.8V VOUT = 2V, VIN < 2V VOUT = 2.5V, VIN < 2.5V VOUT = 2.8V, VIN < 2.8V VOUT = 3V, VIN < 3V VOUT = 3.3V, VIN < 3.3V VOUT = 5V, VIN < 5V VOUT = 1.22V, VIN < 1.22V 10 10 10 10 10 10 10 10 10 5 20 20 20 20 20 20 20 20 20 10 μA μA μA μA μA μA μA μA μA 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 LT1761 regulators are tested and specified under pulse load conditions such that TJ ≈ TA. The LT1761E is 100% production tested at TA = 25°C. Performance at –40°C and 125°C is assured by design, characterization and correlation with statistical process controls. The LT1761I is guaranteed over the full –40°C to 125°C operating junction temperature range. The LT1761MP is 100% tested and guaranteed over the –55°C to 125°C operating junction temperature range. Note 3: The LT1761 (adjustable versions) are 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 maximum input voltage, the output current range must be limited. When operating at maximum output current, the input voltage range must be limited. Note 5: To satisfy requirements for minimum input voltage, the LT1761 (adjustable version) is tested and specified for these conditions with an external resistor divider (two 250k resistors) for an output voltage of 2.44V. The external resistor divider will add a 5μA 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) or VIN = 2.3V (whichever is greater) and a current source load. This means the device is tested while operating in its dropout region or at the minimum input voltage specification. This is the worst-case GND pin current. The GND pin current will decrease slightly 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 LT1761, LT1761-1.2, LT1761-1.5, LT1761-1.8 and LT1761-2 dropout voltage will be limited by the minimum input voltage specification under some output voltage/load conditions. See the curve of Minimum Input Voltage in the Typical Performance Characteristics. Note 12: To satisfy requirements for minimum input voltage, current limit is tested at VIN = VOUT(NOMINAL) + 1V or VIN = 2.3V, whichever is greater. |
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