LTC3788-1

LTC3788-1 2-Phase, Dual Output Synchronous Boost Controller FEATURES 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. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3788-1 features a precision 1.2V reference and a power good output indicator. A 4.5V to 38V input supply range encompasses a wide range of system architectures and battery chemistries. Ind...