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LTC3788-1 Datasheet Dual Output Synchronous Boost Controller

Manufacturer: Linear Technology (now Analog Devices)

Overview: LTC3788-1 2-Phase, Dual Output Synchronous Boost Controller.

General Description

n Synchronous Operation for Highest Efficiency and Reduced Heat Dissipation n Wide Input Range: 4.5V to 38V (40V Abs Max) and Operates Down to 2.5V After Start-Up n Output Voltages Up to 60V n ±1% 1.2V Reference Voltage n RSENSE or Inductor DCR Current Sensing n 100% Duty Cycle Capability for Synchronous MOSFET n Low Quiescent Current: 125µA n Phase-Lockable Frequency (75kHz to 850kHz) n Programmable Fixed Frequency (50kHz to 900kHz) n Adjustable Output Voltage Soft-Start n Power Good Output Voltage Monitor n Low Shutdown Current IQ: < 8μA n Internal LDO Powers Gate Drive from VBIAS or EXTVCC n Available in a Narrow SSOP Package APPLICATIONS n Industrial n Automotive n Medical n Military The LTC®3788-1 is a high performance 2-phase dual synchronous boost converter controller that drives all N-channel power MOSFETs.

Synchronous rectification increases efficiency, reduces power losses and eases thermal requirements, allowing the LTC3788-1 to be used in high power boost applications.

A constant-frequency current mode architecture allows a phase-lockable frequency of up to 850kHz.

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