LTC3852
FEATURES n Charge Pump Input Range: 2.7V to 5.5V n Controller Input Range: 4V to 38V n Integrated Charge Pump Provides 5V Gate Drive to
Logic Level MOSFETs n RSENSE or DCR Current Sensing n ±1.25% Output Voltage Accuracy Over Temperature n Phase-Lockable Fixed Frequency: 250k Hz to 750k Hz n Power Good Output Voltage Monitor n Adjustable Soft-Start Voltage Ramping n Current Foldback Disabled During Start-Up n No Reverse Current During Soft-Start n Selectable Constant Frequency, Pulse-Skipping, or
Burst Mode Operation n Output Overvoltage Protection n Very Low Dropout Operation: 99% Duty Cycle n Available in a 24-Lead (3mm
- 5mm) QFN Package
APPLICATIONS n General Purpose 3.3V Systems n Lithium-Ion Powered Devices n Distributed DC Power Systems
Low Input Voltage, Synchronous Step-Down
DC/DC Controller
DESCRIPTION
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...
