Datasheet LTC3130, LTC3130-1 (Analog Devices) - 3

LTC3130/LTC3130-1
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2). PVIN = VIN = 12V, VOUT = 5V unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Start-Up Voltage EXTVCC = 0V l 2.30 2.40 V EXTVCC > 3.15V, RUN > 1.1V l 0.6 1.0 V Input Voltage Range EXTVCC > 3.15V, RUN > 1.1V l 0.6 25 V Output Voltage Adjust Range (LTC3130) l 1.0 25 V Feedback Voltage (LTC3130) For External FB Resistor Applications l 0.975 1.000 1.020 V From –40°C to +85°C (Note 3) 0.980 1.000 1.020 V Feedback Input Current (LTC3130) FB = 1.1V 0.1 10 nA Fixed VOUT Voltages (LTC3130-1) VS1 = VS2 = 0V l 1.75 1.80 1.85 V VS1 = VCC, VS2 = 0V l 3.20 3.3 3.39 V VS1 = 0V, VS2 = VCC l 4.85 5.0 5.125 V VS1 = VS2 = V l CC 11.64 12.0 12.30 V VIN Quiescent Current – Shutdown RUN < 0.2V 500 850 nA VIN Quiescent Current – UVLO 0.85V < RUN < 0.9V, EXTVCC = 0V 1.4 2.4 µA VIN Quiescent Current – Burst Mode Operation FB > 1.02V (LTC3130), VOUT > VREG (LTC3130-1), 1.6 2.7 µA (Sleeping) MODE = 0V, RUN = VIN, MPPC > 1.05V NMOS Switch Leakage on VIN and VOUT SW1 = SW2 = 0V, VIN = VOUT = 25V 5 100 nA NMOS Switch On-Resistance VCC = 4V 0.35 Ω Inductor Average Current Limit LTC3130-1 (Note 4), LTC3130: ILIM = VCC (Note 4) l 660 850 1200 mA LTC3130: ILIM = 0V (Note 4) l 250 450 650 mA Inductor Peak Current Limit LTC3130-1 (Note 4), LTC3130: ILIM = VCC (Note 4) l 0.9 1.3 1.7 A LTC3130: ILIM = 0V (Note 4) l 0.6 0.85 1.15 A Maximum Boost Duty Cycle LTC3130-1: VOUT < VREG (Note 7), l 91 94 97 % (Percentage of Period SW2 is Low) LTC3130: FB < 0.975V (Note 7) Minimum Duty Cycle LTC3130-1: VOUT > VREG (Note 7), l 0 % LTC3130: FB > 1.02V (Note 7) Switching Frequency l 1.00 1.20 1.40 MHz SW1 and SW2 Minimum Low Time (Note 3) 70 ns MPPC Reference Voltage l 0.95 1.00 1.05 V MPPC Input Current MPPC = 5V 1 20 nA RUN Logic Threshold to Enable Reference l 0.2 0.6 0.85 V RUN Threshold to Enable Switching (Rising) VIN > 2.4V or EXTVCC > 3.15V l 1.01 1.05 1.09 V RUN Threshold Hysteresis l 90 100 110 mV RUN Input Current RUN = 25V 1 30 nA RUN = 1V 0.1 5 nA ILIM Input Logic High (LTC3130) l 1.1 V ILIM Input Logic Low (LTC3130) l 0.35 V ILIM Input Current (LTC3130) ILIM = 5V 1 20 nA VS1, VS2 Input Logic High (LTC3130-1) l 1.1 V VS1, VS2 Input Logic Low (LTC3130-1) l 0.35 V VS1, VS2 Input Current (LTC3130-1) VS1, VS2 = 5V 1 20 nA MODE Input Logic High l 1.1 V MODE Input Logic Low l 0.35 V MODE Input Current MODE = 5V (If RUN is Low or VCC is in UVLO) 1 20 nA MODE = 5V (If Switching is Enabled) 1.7 4 µA 3130f For more information www.linear.com/LTC3130 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Typical Performance Characteristics Pin Functions LTC3130 Block Diagram LTC3130-1 Block Diagram Operation Applications Information Package Description Typical Application Related Parts