LTC3788-1 Datasheet | Linear Technology

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 (75k Hz to 850k Hz) n Programmable Fixed Frequency (50k Hz to 900k Hz) 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 850k Hz. OPTI-LOOP pensation 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 enpasses a wide range of system architectures and battery chemistries. Independent SS pins for each controller ramp the output voltages during start-up. The PLLIN/MODE pin selects among Burst Mode operation, pulse-skipping mode or continuous inductor current mode at light loads. For a leadless 32-pin QFN package with additional Features of adjustable current limit, clock out, phase modulation and two PGOOD outputs, see the LTC3788 data sheet. All registered trademarks and trademarks are the property of their respective owners. Protected by U.S. patents, including...