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LTC2913 数据表(PDF) 3 Page - Linear Technology |
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LTC2913 数据表(HTML) 3 Page - Linear Technology |
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3 / 16 page  LTC4365 3 4365f ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN, VOUT VIN Input Voltage Range Operating Range Protection Range l l 2.5 –40 34 60 V V IVIN Input Supply Current SHDN = 0V, VIN = VOUT, –40°C to 85°C SHDN = 0V, VIN = VOUT, –40°C to 125°C SHDN = 2.5V l l l 10 10 25 50 100 150 μA μA μA IVIN(R) Reverse Input Supply Current VIN = –40V, VOUT = 0V l –1.2 –1.8 mA VIN(UVLO) Input Supply Undervoltage Lockout VIN Rising l 1.8 2.2 2.4 V IVOUT VOUT Input Current SHDN = 0V, VIN = VOUT SHDN = 2.5V, VIN = VOUT VIN = –40V, VOUT = 0V l l l 6 100 20 30 250 50 μA μA μA GATE ΔVGATE N-Channel Gate Drive (GATE-VOUT) VIN = VOUT = 5.0V, IGATE = –1μA VIN = VOUT = 12V to 34V, IGATE = –1μA l l 3 7.4 3.6 8.4 4.2 9.8 V V IGATE(UP) N-Channel Gate Pull Up Current GATE = VIN = VOUT = 12V l –12 –20 –30 μA IGATE(FAST) N-Channel Gate Fast Pull Down Current Fast Shutdown, GATE = 20V, VIN = VOUT = 12V l 31 50 72 mA IGATE(SLOW) N-Channel Gate Gentle Pull Down Current Gentle Shutdown, GATE = 20V, VIN = VOUT = 12V l 50 90 150 μA tGATE(FAST) N-Channel Gate Fast Turn Off Delay CGATE = 2.2nF, UV or OV Fault l 24 μs tGATE(SLOW) N-Channel Gentle Turn Off Delay CGATE = 2.2nF, SHDN Falling, VIN = VOUT = 12V l 150 250 350 μs tRECOVERY GATE Recovery Delay Time VIN = 12V, Power Good to ∆VGATE > 0V l 26 36 49 ms UV, OV VUV UV Input Threshold Voltage UV Falling → ΔVGATE = 0V l 492.5 500 507.5 mV VOV OV Input Threshold Voltage OV Rising → ΔVGATE = 0V 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 = 34V l ±10 nA tFAULT UV, OV Fault Propagation Delay Overdrive = 50mV VIN = VOUT = 12V l 12 μs SHDN VSHDN SHDN Input Threshold SHDN Falling to ΔVGATE = 0V l 0.4 0.75 1.2 V ISHDN SHDN Input Current SHDN = 0.75V, VIN = 34V l ±10 nA tSTART Delay Coming Out of Shutdown Mode SHDN Rising to ΔVGATE > 0V, VIN = VOUT = 12V l 400 800 1200 μs tSHDN(F) SHDN to FAULT Asserted VIN = VOUT = 12V l 1.5 3 μs tLOWPWR Delay from Turn Off to Low Power Operation VIN = VOUT = 12V l 26 36 55 ms FAULT VOL FAULT Output Voltage Low IFAULT = 500μA l 0.15 0.4 V IFAULT FAULT Leakage Current FAULT = 5V, VIN = 34V l ±20 nA The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 2.5V to 34V, unless otherwise noted. (Note 2) 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. Note 4. The GATE pin is referenced to VOUT and does not exceed 44V for the entire operating range. |
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