Datasheet LTC3104 (Analog Devices) - 3

LTC3104
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = VINLDO = 10V unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Step-Down Converter
Input Voltage Range l 2.6 15 V After Start-Up l 2.5 Input Undervoltage Lockout Threshold VIN Rising l 2.1 2.6 V VIN Rising, TJ = 0°C to 85°C (Note 4) 2.1 2.5 V Input Undervoltage Lockout Hysteresis (Note 4) 0.4 V Feedback Voltage (Note 5) l 0.588 0.6 0.612 V Feedback Voltage Line Regulation VIN = 2.5V to 15V (Note 5) 0.02 0.05 %/V Feedback Input Current (Note 5) l 1 20 nA Oscillator Frequency l 0.93 1.2 1.55 MHz TJ = 0°C to 85°C (Note 4) 1.0 1.2 1.45 MHz Quiescent Current, VIN—Active RUN = VIN, RUNLDO = VIN, MODE = 0V, 600 µA FB > 0.612, Nonswitching Quiescent Current, VIN—Sleep TJ = 0°C to 85°C, RUN = MODE = VIN, FB > 0.612 RUNLDO = VIN (Note 4) 2.6 3.3 µA RUNLDO = 0V (Note 4) 1.8 2.6 µA RUN = MODE = VIN, FB > 0.612 RUNLDO = VIN l 2.8 5.5 µA RUNLDO = 0V l 1.8 4.5 µA Quiescent Current, VIN—Shutdown RUN = 0V, RUNLDO = 0V, TJ = 0°C to 85°C (Note 4) 1 1.7 µA RUN = 0V, RUNLDO = 0V l 1 3.3 µA N-Channel MOSFET Synchronous Rectifier Leakage VIN = VSW =15V, VRUN = 0V 0.01 0.3 µA Current N-Channel MOSFET Switch Leakage Current VIN =15V, VSW = 0V, VRUN = 0V 0.01 0.3 µA N-Channel MOSFET Synchronous Rectifier RDS(ON) ISW = 200mA 0.85 Ω N-Channel MOSFET Switch RDS(ON) ISW = –200mA 0.65 Ω Peak Current Limit l 0.40 0.50 0.75 A PGOOD Threshold FB Falling, Percentage Below FB –14 –10 –5 % PGOOD Hysteresis Percentage of FB 2 % PGOOD Voltage Low IPGOOD = 100µA 0.2 V PGOOD Leakage Current VPGOOD = 5V 0.01 0.3 µA Maximum Duty Cycle l 89 92 % Switch Minimum Off Time (tOFF(MIN)) (Note 4) 65 ns Synchronous Rectifier Minimum On Time (tON(MIN)) (Note 4) 70 ns RUN Pin Threshold RUN Pin Rising l 0.76 0.8 0.85 V RUN Pin Hysteresis 0.06 V RUN Input Current RUN = 1.2V l 0.01 0.4 µA MODE Threshold l 0.5 0.8 1.2 V MODE Input Current MODE = 1.2V 0.1 4 µA Soft-Start Time VIN = 5V 0.7 1.4 2.5 ms
LDO Regulator
LDO Input Voltage Range (VIN(LDO)) l 2.5 15 V LDO Output Voltage Range (VLDO) ILDO = 1mA l 0.6 14.5 V LDO Feedback Voltage l 0.576 0.6 0.624 V 3104fa For more information www.linear.com/LTC3104 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts