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LT1962 Datasheet(PDF) 5 Page - Linear Technology |
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LT1962 Datasheet(HTML) 5 Page - Linear Technology |
5 / 20 page LT3009 Series 5 3009fd 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 LT3009 regulators are tested and specified under pulse load conditions such that TJ ≈ TA. The LT3009E is guaranteed to meet performance specifications from 0°C to 125°C operating junction temperature. Specifications over the –40 °C to 125°C operating junction temperature range are assured by design, characterization and correlation with statistical process controls. The LT3009I is guaranteed over the full –40°C to 125°C operating junction temperature range. Note 3: The LT3009 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 the maximum input voltage, the output current range must be limited. When operating at the maximum output current, the input voltage must be limited. Note 5: 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). For the LT3009-1.2, dropout voltage will be limited by the minimum input voltage under some voltage/ load conditions. Note 6: To satisfy minimum input voltage requirements, the LT3009 adjustable version is tested and specified for these conditions with an external resistor divider (61.9k bottom, 280k top) which sets VOUT to 3.3V. The external resistor divider adds 9.69μA of DC load on the output. This external current is not factored into GND pin current. Note 7: GND pin current is tested with VIN = VOUT(NOMINAL) + 0.5V and a current source load. GND pin current will increase in dropout. For the fixed output voltage versions, an internal resistor divider will add to the GND pin current ( 2μA for the LT3009-5, 1μA for the LT3009-1.2, LT3009-1.5, LT3009-1.8, LT3009-2.5 and LT3009-3.3). See the GND Pin Current curves in the Typical Performance Characteristics section. Note 8: The SHDN pin can be driven below GND only when tied to the IN pin directly or through a pull-up resistor. If the SHDN pin is driven below GND by more than –0.3V while IN is powered, the output will turn on. Note 9: Output noise is listed for the adjustable version with the ADJ pin connected to the OUT pin. See the RMS Output Noise vs Load Current curve in the Typical Performance Characteristics Section. PARAMETER CONDITIONS MIN TYP MAX UNITS Output Voltage Noise (Note 9) COUT = 1μF, ILOAD = 20mA, BW = 10Hz to 100kHz 150 μVRMS ADJ Pin Bias Current l –10 0.3 10 nA Shutdown Threshold VOUT = Off to On VOUT = On to Off l l 0.2 0.66 0.36 1.5 V V SHDN Pin Current VSHDN = 0V, VIN = 20V VSHDN = 20V, VIN = 20V l l 0.5 ±1 1.6 μA μA Quiescent Current in Shutdown VIN = 6V, VSHDN = 0V l <1 μA Ripple Rejection (Note 3) VIN – VOUT = 1.5V, VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz, ILOAD = 20mA LT3009 LT3009-1.2 LT3009-1.5 LT3009-1.8 LT3009-2.5 LT3009-3.3 LT3009-5 60 57 55.5 54 52 49 44 72 68 67 66 63 61 56 dB dB dB dB dB dB dB Current Limit VIN = 20V, VOUT = 0 VIN = VOUT(NOMINAL) + 1V, VOUT = – 5% l 22 60 mA mA Input Reverse Leakage Current VIN = –20V, VOUT = 0 l 200 350 μA Reverse Output Current VOUT = 1.2V, VIN = 0 0.6 10 μA ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TJ = 25°C. (Note 2) |
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