Datasheet Analog Devices LTC3890EUH#PBF — 数据表

LTC3890
60V Low IQ, Dual, 2-Phase
Synchronous Step-Down DC/DC Controller
FEATURES n n n n n n n n n n n n n n DESCRIPTION Wide VIN Range: 4V to 60V (65V Abs Max)
Low Operating IQ: 50µA (One Channel On)
Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 24V
RSENSE or DCR Current Sensing
Out-of-Phase Controllers Reduce Required Input
Capacitance and Power Supply Induced Noise
Phase-Lockable Frequency (75kHz to 850kHz)
Programmable Fixed Frequency (50kHz to 900kHz)
Selectable Continuous, Pulse-Skipping or Low Ripple
Burst Mode® Operation at Light Loads
Selectable Current Limit
Very Low Dropout Operation: 99% Duty Cycle
Adjustable Output Voltage Soft-Start or Tracking
Power Good Output Voltage Monitors
Output Overvoltage Protection
Low Shutdown IQ : < 14µA
Internal LDO Powers Gate Drive from VIN or EXTVCC
No Current Foldback During Start-Up
Small Low Profile (0.75mm) 5mm × 5mm QFN Package
AEC-Q100 Qualified for Automotive Applications The LTC®3890 is a high performance dual step-down …

LTC3890
60V Low IQ, Dual, 2-Phase
Synchronous Step-Down
DC/DC Controller
DESCRIPTION FEATURES n n n n n n n n n n n n n Wide VIN Range: 4V to 60V (65V Abs Max)
Low Operating IQ: 50µA (One Channel On)
Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 24V
RSENSE or DCR Current Sensing
Out-of-Phase Controllers Reduce Required Input
Capacitance and Power Supply Induced Noise
Phase-Lockable Frequency (75kHz to 850kHz)
Programmable Fixed Frequency (50kHz to 900kHz)
Selectable Continuous, Pulse-Skipping or Low Ripple
Burst Mode® Operation at Light Loads
Selectable Current Limit
Very Low Dropout Operation: 99% Duty Cycle
Adjustable Output Voltage Soft-Start or Tracking
Power Good Output Voltage Monitors
Output Overvoltage Protection
Low Shutdown IQ : < 14µA
Internal LDO Powers Gate Drive from VIN or EXTVCC
No Current Foldback During Start-Up
Small Low Profile (0.75mm) 5mm × 5mm QFN Package The LTC®3890 is a high performance dual step-down …