LTC3815 ELECTRICAL CHARACTERISTICSThe l denotes the specifications which apply over the specified operatingjunction temperature range, VIN = 3.3V unless otherwise noted. (Note 2) SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS VMODE Discontinuous Mode Threshold 1 V tON(MIN) Minimum On-Time 75 ns tOFF(MIN) Minimum Off-Time 100 ns RTOP Top Power PMOS On Resistance 35 mΩ RBOTTOM Bottom Power NMOS On Resistance 20 mΩ θCLKOUT Relative Phase of CLKOUT MODE/SYNC = 0V 180 Deg PGOOD VPGOOD,DEFAULT Default PGOOD Threshold VPGLIM = VIN, VOUT >1V ±8 ±10 ±12 % VPGOOD,PROGRAM Program PGOOD Threshold VPGLIM/VREF = 0.19, VOUT ≥ 1V ±6 ±10 ±9 % VPGLIM/VREF = 0.38 ±13 ±30 ±17 % ILEAK PGOOD Leakage Current ±5 µA VOL PGOOD Output Low Voltage IOUT = 3mA 0.1 0.3 V tPGFD PGOOD Filter Delay PGFD = 0V 150 190 250 µs PGFD = 0.65V 1.0 1.6 2.2 ms PGFD = VIN 17 24 32.5 ms Output Voltage Readback N Resolution 13 Bits LSB Step Size 0.5 mV VF/S Full Scale Output Voltage (Note 9) 16.4 V VOUT_TUE Total Unadjusted Error l ±0.75 % ±0.5 % tCONVERT Conversion Time 40 ms Input Voltage Readback N Resolution 13 Bits LSB Step Size 4 mV VF/S Full Scale Input Voltage (Note 9) 131 V VIN_TUE Total Unadjusted Error l ±1.5 % tCONVERT Conversion Time 40 ms Output Current Readback N Resolution 13 Bits LSB Step Size 10 mA VF/S Full Scale Output Current ±82 A IOUT_TUE Total Unadjusted Error ±3 % tCONVERT Conversion Time 40 ms Input Current Readback N Resolution 13 Bits LSB Step Size 10 mA VF/S Full Scale Input Current ±82 A IIN_TUE Total Unadjusted Error ±3 % tCONVERT Conversion Time 40 ms Rev B 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information PMBus Command Details Typical Applications Package Description Revision History Typical Application Related Parts
