LTC4365 e lecTrical characTerisTics The l denotes the specifications which apply over the full operatingtemperature range, otherwise specifications are at TA = 25°C. VIN = 2.5V to 34V, unless otherwise noted. (Note 2)SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS tRECOVERY GATE Recovery Delay Time VIN = 12V, Power Good to ΔVGATE > 0V LTC4365, CGATE = 2.2nF l 26 36 49 ms LTC4365-1, CGATE = 2.2nF l 0.6 1 1.5 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 l 1 2 µs VIN = VOUT = 12V 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 LTC4365 l 26 36 55 ms LTC4365-1 l 0.3 0.7 2 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 Note 1. Stresses beyond those listed under Absolute Maximum Ratings Note 3. These pins can be tied to voltages below –0.3V through a resistor may cause permanent damage to the device. Exposure to any Absolute that limits the current below 1mA. Maximum Rating condition for extended periods may affect device Note 4. The GATE pin is referenced to VOUT and does not exceed 44V for reliability and lifetime. the entire operating range. Note 2. All currents into pins are positive; all voltages are referenced to GND unless otherwise noted. 4365fa 4 For more information www.linear.com/LTC4365 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Related Parts
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