Datasheet Analog Devices LT8650SEV#WPBF — 数据表

LT8650S
Dual Channel 4A, 42V,
Synchronous Step-Down Silent Switcher 2
with 6.2µA Quiescent Current
DESCRIPTION FEATURES Silent Switcher®2 Architecture:
n Ultralow EMI on Any PCB
n Eliminates PCB Layout Sensitivity
n Internal Bypass Capacitors Reduce Radiated EMI
n Optional Spread Spectrum Modulatio 4A DC from Each Channel Simultaneously
n Up to 6A on Either Channel
n Ultralow Quiescent Current Burst Mode® Operation:
n 6.2μA I Regulating 12V to 5V
Q
IN
OUT1 and 3.3VOUT2
n Output Ripple 0.8V, VVC1 = VVC2 = VCC,
VSYNC = 0V l VIN1 + VCC Quiescent Current in
Sleep with External Compensation VEN/UV1 = VEN/UV2 = 2V, VFB1 = VFB2 >0.8V, VVC1 = VVC2 = Float,
VSYNC = 0V l VIN1 + VCC Quiescent Current when
Active VEN/UV1 = VEN/UV2 = 2V, VFB1 = VFB2 >0.8V, VVC1 = VVC2 = VCC, VSYNC = 3.4V l VIN Current in Regulation VIN = 12V, VOUT = 3.3V, Output Load = 100µA, VVC1 = VVC2 = VCC, VSYNC = 0V
VIN = 12V, VOUT = 3.3V, Output Load = 1mA, VVC1 = VVC2 = VCC, VSYNC = 0V Feedback Reference Voltage
l Feedback Voltage Line Regulation VIN = 4.0V to 36V Feedback Pin Input Current VFB = 0.8V Minimum On-Time ILOAD = 3A, SYNC ≥ 2V l Oscillator Frequency RT = 133k
RT = 35.7k …