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LT3587 Datasheet(PDF) 3 Page - Linear Technology |
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LT3587 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 24 page  LT3587 3 3587fc ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VVIN = 3.6V, VEN/SS1 = VEN/SS3 = VVIN unless otherwise noted (Note 2, 3). PARAMETER CONDITIONS MIN TYP MAX UNITS Boost1 CAP1 Bias Current VCAP1 = 15V, VOUT1 = Open 60 150 μA FB1 Reference Voltage l 1.19 1.22 1.25 V VOUT1 Output Voltage RFB1 = 1MΩ l 14.25 15 15.75 V SW1 Current Limit 800 990 mA SW1 VCESAT ISW1 = 400mA 200 mV SW1 Leakage Current VSW1 = 15V 0.1 5 μA EN/SS1 for Full Inductor Current VFB1 = 1.1V, VFB2 = 0.1V 2.5 V EN/SS1 Shutdown Voltage Threshold l 0.2 V EN/SS1 Pin Bias Current VEN/SS1 = 0V –0.5 –1 –1.5 μA VOUT1 Current Limit VCAP1 = 15V 100 155 mA CAP1 to VOUT1 On-Resistance (RDISC1)VCAP1 = 15V, IVOUT1= 50mA 5 8 Ω VOUT1 Disconnect Leakage VVIN = VCAP1 = 6V, VVOUT1 = 0V 0.1 1 μA Inverter FB2 Reference Voltage l –10 5 20 mV Output Voltage RFB2 = 1MΩ l –7.5 –8 –8.5 V SW2 Current Limit 900 1090 mA SW2 VCESAT ISW2 = 600mA 250 mV SW2 Leakage Current VSW2 = 15V 0.1 5 μA FB1 Threshold to Start Negative Channel Percent of Final Regulation Value 87 90 % Boost3 CAP3 Bias Current VCAP3 = 15V, VOUT3 = Open 70 150 μA Boost3 Programmed Current RIFB3 = 8.06kΩ l 18 20 22 mA VFB3 Reference Voltage RVFB3 = 1MΩ, IVOUT3 = 20mA l 0.77 0.8 0.83 V VOUT3 Output Voltage RVFB3 = 1MΩ, IVOUT3 = 20mA l 14 15 16 V SW3 Current Limit 400 480 mA SW3 VCESAT ISW3 = 200mA 250 mV SW3 Leakage Current VSW3 = 15V 0.1 5 μA EN/SS3 for Full Inductor Current VVFB3 = VIFB3 = 0.6V 2 V EN/SS3 Shutdown Voltage Threshold l 0.2 V EN/SS3 Pin Bias Current VEN/SS3 = 0V –0.5 –1 –1.5 μA VOUT3 Current Limit VCAP3 = 15V, VIFB3 = 0V 70 110 mA CAP3 to VOUT3 On Resistance (RDISC3)VCAP3 = 15V, IVOUT3 = 20mA 10 15 Ω VOUT3 Disconnect Leakage VVIN = VCAP3 = 6V, VVOUT3 = 0V 0.1 1 μA CAP3 Pin Overvoltage Clamp 27 29 31 V 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: All currents into pins are positive; all voltages are referenced to GND unless otherwise noted. Note 3: The LT3587 is guaranteed to meet specified performance from 0°C to 125°C. Specifications over the –40°C to 125°C operating range are assured by design, characterization and correlation with statistical process controls. |
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