Datasheet LT3695 (Analog Devices) - 8

LT3695 Series
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Minimum Input Voltage Maximum VIN for Full Frequency Maximum VIN for Full Frequency
6.5 40 40 VOUT = 5V L = 10μH 35 35 f = 800kHz 6.0 T T A = 25˚C A = 25˚C 30 30 TA = 85˚C TA = 85˚C 5.5 25 25 TAGE (V) (V) (V) IN IN V 20 V 20 5.0 INPUT VOL 15 15 VOUT = 3.3V VOUT = 5V 4.5 L = 10μH L = 10μH 10 10 f = 800kHz f = 800kHz SYNC = 3.3V SYNC = 5V 4 5 5 1 10 100 1000 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 LOAD CURRENT (mA) LOAD CURRENT(A) LOAD CURRENT(A) 3695 G28 3695 G29 3695 G30
Switching Waveforms, Maximum VIN for Full Frequency VC Voltages 60V Input Voltage Transient
40 2.5 35 TA = 25˚C VSW 2.0 10V/DIV 30 CURRENT LIMIT CLAMP TA = 85˚C 1.5 VIN 25 20V/DIV (V) IN TAGE (V) V 20 VOUT VOL 1.0 5V/DIV V C 3695 G33 15 SWITCHING THRESHOLD 5ms/DIV VOUT = 5V VIN = 12V, FRONT PAGE APPLICATION L = 4.7μH 0.5 I 10 LOAD = 500mA f = 2MHz SYNC = 5V 5 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 –50 –25 0 25 50 75 100 125 150 LOAD CURRENT(A) TEMPERATURE (°C) 3695 G31 3695 G32
Switching Waveforms, Switching Waveforms, Switching Waveforms, Transition from Burst Mode Full Frequency Continuous Burst Mode Operation Operation to Full Frequency Operation
V V V SW SW SW 5V/DIV 5V/DIV 5V/DIV IL I I L L 0.5A/DIV 0.2A/DIV 0.2A/DIV V VOUT OUT VOUT 20mV/DIV 20mV/DIV 20mV/DIV 5μs/DIV 3695 G34 1μs/DIV 3695 G35 1μs/DIV 3695 G36 VIN = 12V, FRONT PAGE APPLICATION VIN = 12V, FRONT PAGE APPLICATION VIN = 12V, FRONT PAGE APPLICATION ILOAD = 5mA ILOAD = 55mA ILOAD = 500mA 3695fa 8