Datasheet LT3433 (Analog Devices) - 4

LT3433
W U TYPICAL PERFOR A CE CHARACTERISTICS Error Amp Reference Soft-Start Current vs Temperature vs Temperature Switch Current Limit vs VFB
7.0 1.232 700 TA = 25°C 6.5 1.231 600 6.0 µA) ( 5.5 1.230 500 I SS 5.0 1.229 400 ERROR AMP REFERENCE (V) SWITCH CURRENT LIMIT (mA) 4.5 4.0 1.228 300 –50 0 50 100 125 –50 0 50 100 125 0 0.2 0.4 0.6 0.8 1.0 TEMPERATURE (°C) TEMPERATURE (°C) VFB (V) 3433 G03 3433 G04 3433 G05
Oscillator Frequency vs Temperature Oscillator Frequency vs VFB Current Limit vs Temperature
210 200 1.0 TA = 25°C 0.9 205 150 W/C HIGH 0.8 200 100 TYPICAL 0.7 CURRENT LIMIT (A) 195 50 OSCILLATOR FREQUENCY (kHz) 0.6 OSCILLATOR FREQUENCY (kHz) W/C LOW 190 0 0.5 –50 0 50 100 125 0 0.2 0.4 0.6 0.8 1.0 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) V TEMPERATURE (°C) FB (V) 3433 G06 3433 G07 3433 G08
Maximum Boost Supply Switch Maximum Output Supply Switch Drive Current vs Boost Supply Drive Current vs Output Supply Voltage Voltage
70 70 TA = 25°C TA = 25°C 65 65 60 60 (mA/A) (mA/A) SW SW /I /I 55 55 I BST I VOUT 50 50 45 45 4 5 6 7 8 9 10 11 12 4 5 6 7 8 9 10 11 12 VBST – VSW_H (V) VOUT (V) 3433 G09 3433 G10 3433f 4