LTC3788
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LTC3788

2-Phase, Dual Output Synchronous Boost Controller

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Info: : PRODUCTION tooltip
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Part Details
Part Models 4
1ku List Price Starting From $4.23
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
Additional Details
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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.

CLKOUT/PHASMD Adjustable Current Sense Power Good Package
LTC3788 Yes Yes 2 5 × 5 QFN-32
LTC3788-1 No No 1 SSOP-28


Applications

  • Industrial
  • Automotive
  • Medical
  • Military
Part Models 4
1ku List Price Starting From $4.23

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Feb 20, 2022

- 21_0269

Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

LTC3788EUH#PBF

PRODUCTION

LTC3788EUH#TRPBF

PRODUCTION

LTC3788IUH#PBF

PRODUCTION

LTC3788IUH#TRPBF

PRODUCTION

Jul 31, 2020

- 20_0245

Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

LTC3788EUH#PBF

PRODUCTION

LTC3788EUH#TRPBF

PRODUCTION

LTC3788IUH#PBF

PRODUCTION

LTC3788IUH#TRPBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Feb 20, 2022

- 21_0269

arrow down

Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

LTC3788EUH#PBF

PRODUCTION

LTC3788EUH#TRPBF

PRODUCTION

LTC3788IUH#PBF

PRODUCTION

LTC3788IUH#TRPBF

PRODUCTION

Jul 31, 2020

- 20_0245

arrow down

Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

LTC3788EUH#PBF

PRODUCTION

LTC3788EUH#TRPBF

PRODUCTION

LTC3788IUH#PBF

PRODUCTION

LTC3788IUH#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

DC1409A

LTC3788EUH Demo Board | 2-Phase, Dual Output, 5V to 24VIN, VOUT = 12V @ 10A and 24V @ 5A

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DC1409A

LTC3788EUH Demo Board | 2-Phase, Dual Output, 5V to 24VIN, VOUT = 12V @ 10A and 24V @ 5A

LTC3788EUH Demo Board | 2-Phase, Dual Output, 5V to 24VIN, VOUT = 12V @ 10A and 24V @ 5A

Product Detail

Demonstration circuit DC1409 is DC/DC boost converter featuring the LTC3788 constant frequency current mode boost controller. The DC1409A operates over 5V to 24V input and provides 8A to 10A of output current at 12V output. Also, the DC1409A provides a second 24V output capable of delivering 3A to 5A. The 300kHz constant frequency operation results in small and efficient circuit. The converter provides high output voltage accuracy (typically ±3%) over wide load range with no minimum load requirement. The demonstration circuit can be easily modified to generate different output voltages. Also, the two outputs can be connected together to generate single output with two phase operation.



Tools & Simulations

Tools & Simulations 2

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

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