Datasheet Analog Devices LTC3780IUH#TRPBF — 数据表

LTC3780
High Efficiency, Synchronous,
4-Switch Buck-Boost Controller
FEATURES DESCRIPTION Single Inductor Architecture Allows VIN Above,
Below or Equal to VOUT
n Wide V Range: 4V to 36V Operation
IN
n Synchronous Rectification: Up to 98% Efficiency
n Current Mode Control
n ±1% Output Voltage Accuracy: 0.8V < V
OUT < 30V
n Phase-Lockable Fixed Frequency: 200kHz to 400kHz
n Power Good Output Voltage Monitor
n Internal LDO for MOSFET Supply
n Quad N-Channel MOSFET Synchronous Drive
n V
OUT Disconnected from VIN During Shutdow Adjustable Soft-Start Current Ramping
n Foldback Output Current Limiting
n Selectable Low Current Modes
n Output Overvoltage Protectio Available in 24-Lead SSOP and Exposed Pad (5mm × 5mm) 32-Lead QFN Packages The LTC®3780 is a high performance buck-boost switching regulator controller that operates from input voltages
above, below or equal to the output voltage. The constant
frequency current mode architecture allows a phaselockable frequency of up to 400kHz. With a wide 4V to
30V (36V maximum) input and output range and seamless …

LTC3780
High Efficiency, Synchronous,
4-Switch Buck-Boost Controller
Features Description Single Inductor Architecture Allows VIN Above,
Below or Equal to VOUT
n Wide V Range: 4V to 36V Operation
IN
n Synchronous Rectification: Up to 98% Efficiency
n Current Mode Control
n ±1% Output Voltage Accuracy: 0.8V < V
OUT < 30V
n Phase-Lockable Fixed Frequency: 200kHz to 400kHz
n Power Good Output Voltage Monitor
n Internal LDO for MOSFET Supply
n Quad N-Channel MOSFET Synchronous Drive
n V
OUT Disconnected from VIN During Shutdow Adjustable Soft-Start Current Ramping
n Foldback Output Current Limiting
n Selectable Low Current Modes
n Output Overvoltage Protectio Available in 24-Lead SSOP and Exposed Pad (5mm × 5mm) 32-Lead QFN Packages The LTC®3780 is a high performance buck-boost switching regulator controller that operates from input voltages
above, below or equal to the output voltage. The constant
frequency current mode architecture allows a phaselockable frequency of up to 400kHz. With a wide 4V to
30V (36V maximum) input and output range and seamless …