Datasheet Linear Technology LTC3852EUDD#PBF — 数据表

LTC3852
Low Input Voltage,
Synchronous Step-Down
DC/DC Controller
DESCRIPTION FEATURES Charge Pump Input Range: 2.7V to 5.5V
Controller Input Range: 4V to 38V
Integrated Charge Pump Provides 5V Gate Drive to
Logic Level MOSFETs
RSENSE or DCR Current Sensing
±1.25% Output Voltage Accuracy Over Temperature
Phase-Lockable Fixed Frequency: 250kHz to 750kHz
Power Good Output Voltage Monitor
Adjustable Soft-Start Voltage Ramping
Current Foldback Disabled During Start-Up
No Reverse Current During Soft-Start
Selectable Constant Frequency, Pulse-Skipping, or
Burst Mode Operation
Output Overvoltage Protection
Very Low Dropout Operation: 99% Duty Cycle
Available in a 24-Lead (3mm ¥ 5mm) QFN Package The LTC®3852 is a constant frequency, current mode
step-down DC/DC controller which can be powered by an
onboard charge pump. Input supplies as low as 2.7V, when
doubled by the charge pump, provide 5V to the LTC3852’s …