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LTC3788 Datasheet

LTC3788 Datasheet

2-Phase, Dual Output Synchronous Boost Controller
Part No.: LTC3788
Page: 32 Pages
Size: 347 KB
Manufacturer: Linear Technology
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Update Time: 2024-12-24 17:25:56
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LTC3788 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LTC3788EUH#PBF Tube 73 3788 1 32 -40°C ~ 125°C 32-Lead (5mm × 5mm) Plastic QFN  
LTC3788EUH#TRPBF Reel 2500 3788 1 32 -40°C ~ 125°C 32-Lead (5mm × 5mm) Plastic QFN  
LTC3788IUH#PBF Tube 73 3788 1 32 -40°C ~ 125°C 32-Lead (5mm × 5mm) Plastic QFN  
LTC3788IUH#TRPBF Reel 2500 3788 1 32 -40°C ~ 125°C 32-Lead (5mm × 5mm) Plastic QFN  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LTC3788 Datasheet(PDF)

LTC3788 Datasheet(Picture)

LTC3788 Features

  • Synchronous Operation for Highest Efficiency and Reduced Heat Dissipation
  • Wide Input Range: 4.5V to 38V (40V Abs Max) and Operates Down to 2.5V After Start-Up
  • Output Voltages Up to 60V
  • ±1% 1.2V Reference Voltage
  • RSENSE or Inductor DCR Current Sensing
  • 100% Duty Cycle Capability for Synchronous MOSFET
  • Low Quiescent Current: 125μA
  • Phase-Lockable Frequency (75kHz to 850kHz)
  • Programmable Fixed Frequency (50kHz to 900kHz)
  • Selectable Current Limit
  • Adjustable Output Voltage Soft-Start
  • Power Good Output Voltage Monitors
  • Low Shutdown Current IQ: <8μA
  • Internal LDO Powers Gate Drive from VBIAS or EXTVCC
  • Thermally Enhanced Low Profile 32-Pin 5mm × 5mm QFN Package

LTC3788 Applications

  • Industrial
  • Automotive
  • Medical
  • Military

LTC3788 Description

The LTC3788 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 850kHz. OPTI-LOOP® compensation 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 encompasses 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.

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