LTC3789
High Efficiency, Synchronous,
4-Switch Buck-Boost Controller
Features Description Single Inductor Architecture Allows VIN Above,
Below or Equal to the Regulated VOUT
n Programmable Input or Output Current
n Wide V Range: 4V to 38V
IN
n 1% Output Voltage Accuracy: 0.8V < V
OUT < 38V
n Synchronous Rectification: Up to 98% Efficiency
n Current Mode Control
n Phase-Lockable Fixed Frequency: 200kHz to 600kHz
n No Reverse Current During Start-Up
n Power Good Output Voltage Monitor
n Internal 5.5V LDO
n Quad N-Channel MOSFET Synchronous Drive
n V
OUT Disconnected from VIN During Shutdow True Soft-Start and V
OUT Short Protection, Even in
Boost Mode
n Available in 28-Lead QFN (4mm × 5mm) and 28-Lead SSOP Packages The LTC®3789 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 …