LTC3788 Datasheet | Linear Technology

2-Phase, Dual Output Synchronous Boost Controller Features 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 Selectable Current Limit n Adjustable Output Voltage Soft-Start n Power Good Output Voltage Monitors n Low Shutdown Current IQ: < 8μA n Internal LDO Powers Gate Drive from VBIAS or EXTVCC n Thermally Enhanced Low Profile 32-Pin 5mm × 5mm QFN Package Applications n Industrial n Automotive n Medical n Military Description The LTC®3788 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 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 Features a precision 1.2V reference and dual power good output indicators. 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 leaded 28-lead SSOP package with a fixed current limit and one PGOOD output, without phase modulation or a clock output, see the LTC3788-1 data sheet. L, LT, LTC, LTM, Linear Technology, Burst Mode, OPTI-LOOP, Poly Phase and the Linear...