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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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LTC4366 데이터시트(PDF) 4 Page - Analog Devices |
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LTC4366 데이터시트(HTML) 4 Page - Analog Devices |
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4 / 22 page  LTC4368 4 Rev. B For more information www.analog.com 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. These pins can be tied to voltages below –0.3V through a resistor that limits the current below 1mA. The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 2.5V to 60V, unless otherwise noted (Note 2). UV = 2.5V, OV = 0V, SHDN = 2.5V, SENSE = VOUT = VIN unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IGATE(UP) Gate Pull Up Current GATE = 15V, VIN = 12V l –20 –35 –60 µA IGATE(SLOW) Gate Slow Pull Down Current GATE = 20V, VIN = 12V l 40 90 160 µA IGATE(FAST) Gate Fast Pull Down Current GATE = 20V, SENSE = VIN = 12V l 30 60 90 mA tD(FAST) Gate Fast Turn Off Delay CGATE = 2.2nF: UV, OV Fault l 2 6 µs tD(SLOW) Gate Slow Turn Off Delay CGATE = 2.2nF, SHDN Falling, VIN = 12V l 150 275 575 µs tD(ON) Gate Turn-On Delay Time VIN = 12V, Power Good to ΔVGATE > 0V l 22 32 45 ms tp(GATE) Overcurrent Fault Propagation Delay CGATE = 2.2nF, Overcurrent Fault to ΔVGATE = 0V SENSE – VOUT: 0 to +100mV, or SENSE – VOUT: 0 to –100mV (LTC4368-1) SENSE – VOUT: 0 to –10mV (LTC4368-2) l 3 8 18 µs UV, OV VUV UV Input Threshold Voltage UV Falling l 492.5 500 507.5 mV VOV OV Input Threshold Voltage OV Rising l 492.5 500 507.5 mV VUVHYST UV Input Hysteresis l 20 25 32 mV VOVHYST OV Input Hysteresis l 20 25 32 mV ILEAK UV, OV Leakage Current V = 0.5V, VIN = 60V l ±10 nA tFAULT UV, OV Fault Propagation Delay Overdrive = 50mV, VIN = 12V l 1 2 µs SHDN VSHDN SHDN Input Threshold SHDN Falling l 0.4 0.75 1.2 V ISHDN SHDN Input Current SHDN = 10V, VIN = 60V l ±15 nA tSTART Delay Coming Out of Shutdown Mode SHDN Rising to FAULT, VIN = 12V l 400 800 1400 µs tSHDN(F) SHDN To FAULT Asserted VIN = 12V l 1.5 3 µs tLOWPWR Delay From Turn Off to Low Power Operation VIN = 12V l 20 32 48 ms FAULT VOL FAULT Output Voltage Low IFAULT = 500µA, VIN = 12V l 0.15 0.4 V IFAULT FAULT Leakage Current FAULT = 5V, VIN = 60V l ±20 nA RETRY VRETRY Configuration Threshold for GATE Latch-Off RETRY Falling to ΔIRETRY > 2µA VIN = 12V l 0.5 1 1.5 V IRETRY Output Current for RETRY Timer RETRY = 2V, VIN = 12V RETRY = 0V, VIN = 12V l l 2.5 –10 3.5 –17 4.5 –25 µA µA tCLEAR Minimum SHDN Pulse to Clear Forward Overcurrent RETRY Latch RETRY = 0V, VIN = 12V l 15 µs tRETRY Forward Overcurrent Cool-Down Delay FAULT Asserted to FAULT Released, CRETRY = 22nF SENSE = VOUT = VIN = 12V l 80 120 150 ms ELECTRICAL CHARACTERISTICS |
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