Datasheet LTC3609 (Analog Devices) - 6

LTC3609 Typical perForMance characTerisTics
Maximum Valley Current Limit Maximum Valley Current Limit On-Time vs Temperature vs VRNG Voltage vs RUN/SS Voltage
300 15 15 I FIGURE 6 CIRCUIT FIGURE 6 CIRCUIT ION = 30µA VVON = 0V 250 12 12 200 9 9 150 6 6 ON-TIME (ns) 100 3 3 50 MAXIMUM VALLEY CURRENT LIMIT (A) MAXIMUM VALLEY CURRENT LIMIT (A) 0 0 0 –50 –25 0 25 50 75 100 125 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.65 1.90 2.15 2.40 2.65 2.90 3.15 3.40 TEMPERATURE (°C) VRNG VOLTAGE (V) RUN/SS VOLTAGE (V) 3609 G14 3609 G15 3609 G13
Maximum Valley Current Limit Maximum Valley Current vs Input Maximum Valley Current Limit vs Temperature Voltage in Foldback
15 10 10 12 8 8 9 6 6 6 4 4 3 2 2 MAXIMUM VALLEY CURRENT (A) MAXIMUM VALLEY CURRENT LIMIT (A) MAXIMUM VALLEY CURRENT LIMIT (A) 0 0 0 –50 –25 0 25 50 75 100 125 4 12 20 28 36 0 0.1 0.2 0.3 0.4 0.5 0.6 TEMPERATURE (°C) INPUT VOLTAGE (V) VFB (V) 3609 G16 3609 G17 3609 G18
Feedback Reference Voltage Input and Shutdown Currents vs Temperature Error Amplifier gm vs Temperature vs Input Voltage
0.62 2.0 1400 40 1200 EXTVCC OPEN 35 1.8 SHUTDOWN CURRENT (µA) 0.61 30 1000 1.6 25 800 0.60 (mS) SHUTDOWN 20 g m 1.4 600 15 INPUT CURRENT (µA) 400 0.59 10 1.2 EXTVCC = 5V 200 FEEDBACK REFERENCE VOLTAGE (V) 5 0.58 1.0 0 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 0 5 10 15 20 25 30 TEMPERATURE (°C) TEMPERATURE (°C) INPUT VOLTAGE (V) 3609 G19 3609 G20 3609 G21 3609fb Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration order information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts