Datasheet LTC3731 (Analog Devices) - 8

LTC3731
TYPICAL PERFORMANCE CHARACTERISTICS Differential Amplifier Gain-Phase
0 0 –3 –45 PHASE (DEG) –6 –90 GAIN (dB) –9 –135 –12 –180 –15 –225 0001 0.01 0.1 1 10 FREQUENCY (MHz) 3731 G19
Shed Mode at 1 Amp, Light Load Burst Mode at 1 Amp, Light Load Current (Circuit of Figure 14) Current (Circuit of Figure 14)
VOUT VOUT AC, 20mV/DIV AC, 20mV/DIV VSW1 VSW1 10V/DIV 10V/DIV VSW2 VSW2 10V/DIV 10V/DIV VSW3 VSW3 10V/DIV 10V/DIV VIN = 12V 4µs/DIV VIN = 12V 4µs/DIV VOUT = 1.5V VOUT = 1.5V VFCB = VCC VFCB = OPEN FREQUENCY = 250kHz 3731 G20 FREQUENCY = 250kHz 3731 G21
Transient Load Current Response: Continuous Mode at 1 Amp, Light 0 Amp to 50 Amp (Circuit of Load Current (Circuit of Figure 14) Figure 14)
VOUT AC, 20mV/DIV VOUT AC, 20mV/DIV VSW1 10V/DIV V ILOAD SW2 10V/DIV 20A/DIV VSW3 10V/DIV VIN = 12V 4µs/DIV VIN = 12V 20µs/DIV VOUT = 1.5V VOUT = 1.5V VFCB = 0V VFCB = VCC FREQUENCY = 250kHz 3731 G22 FREQUENCY = 250kHz 3731 G23 3731fc 8 Document Outline Features Applications Features Description 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