Datasheet Analog Devices LTC3619EDD#TRPBF — 数据表

LTC3619
400mA/800mA Synchronous
Step-Down DC/DC with
Average Input Current Limit
Description Features Programmable Average Input Current Limit:
±5% Accuracy
n Dual Step-Down Outputs: Up to 96% Efficiency
®
n Low Ripple (> 100/clock frequency (2.25MHz) as
a starting point, R being RLIM, C being CLIM. VOUT
2V/DIV VOUT
200mV/DIV IVIN
500mA/DIV VIN
1V/DIV
AC-COUPLED VRLIM
1V/DIV IOUT
500mA/DIV IL
1A/DIV IIN
500mA/DIV
50ms/DIV 3619 F01a 1ms/DIV 3619 F01b VIN = 5V, 500mA COMPLIANT,
RLIM = 116k, CLIM = 0.1µF
ILOAD = 0A TO 1.1A, COUT = 2.2mF, VOUT = 3.3V
ILIM = 475mA, CHANNEL 1 UNLOADED VIN = 5V, 500mA COMPLIANT, …