Datasheet LT1610 (Analog Devices) - 4

LT1610
W U TYPICAL PERFOR A CE CHARACTERISTICS Current Limit (DC = 30%) VCESAT vs Current vs Temperature Current Limit vs Duty Cycle
600 800 800 TA = 25°C 700 700 500 600 TA = 85°C 600 500 400 (mV) TA = 25°C 500 400 CESATV 300 300 400 TA = – 40°C CURRENT LIMIT (mA) 200 200 SWITCH CURRENT LIMIT (mA) 300 100 100 200 0 0 100 200 300 400 500 600 –50 –25 0 25 50 75 100 0 10 20 30 40 50 60 70 80 90 100 SWITCH CURRENT (mA) TEMPERATURE (°C) DUTY CYCLE (%) 1610 G01 1610 G02 1610 G03
Oscillator Frequency Quiescent Current vs Input Voltage Feedback Voltage vs Temperature
2.50 1.240 40 TA = 25°C 2.25 35 1.235 2.00 µA) 30 1.75 1.230 1.50 25 1.25 1.225 20 1.00 15 1.220 0.75 FEEDBACK VOLTAGE (V) QUIESCENT CURRENT ( 10 SWITCHING FREQUENCY (MHz) 0.50 1.215 0.25 5 0 1.210 0 0 1 2 3 4 5 6 7 8 –50 –25 0 25 50 75 100 – 50 – 25 0 25 50 75 100 INPUT VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 1610 G04 1610 G05 1610 G06
SHDN Pin Current Transient Response, Burst Mode Operation, vs SHDN Pin Voltage Circuit of Figure 1 Circuit of Figure 1
50 V V OUT OUT 20mV/DIV 50mV/DIV 40 AC COUPLED AC COUPLED SWITCH µA) I VOLTAGE L1 30 100mA/DIV 2V/DIV SWITCH 31mA I CURRENT LOAD 20 1mA 50mA/DIV 1610 TA08 V 1610 TA08 V IN = 1.25V 500µs/DIV IN = 1.25V 20µs/DIV SHDN CURRENT ( V V OUT = 3V OUT = 3V I 10 LOAD = 3mA 0 0 1 2 3 4 5 6 7 8 SHDN VOLTAGE (V) 1610 G07 4