LTC3788-1
PRODUCTION2-Phase, Dual Output Synchronous Boost Controller
- Part Models
- 4
- 1ku List Price
- Starting From $5.35
Overview
- 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)
- Adjustable Output Voltage Soft-Start
- Power Good Output Voltage Monitor
- Low Shutdown Current IQ: <8μA
- Internal LDO Powers Gate Drive from VBIAS or EXTVCC
- Available in a Narrow SSOP Package
The LTC3788-1 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.
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.
| 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
Documentation
Data Sheet 1
Technical Articles 3
Video 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC3788EGN-1#PBF | 28-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC3788EGN-1#TRPBF | 28-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC3788IGN-1#PBF | 28-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC3788IGN-1#TRPBF | 28-Lead SSOP (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 3, 2024 - 24_0235 (QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking |
||
| LTC3788EGN-1#PBF | PRODUCTION | |
| LTC3788EGN-1#TRPBF | PRODUCTION | |
| LTC3788IGN-1#PBF | PRODUCTION | |
| LTC3788IGN-1#TRPBF | PRODUCTION | |
|
Aug 10, 2022 - 22_0177 Laser Top Mark Conversion for QSOP20_24_28 Assembled in ADPG [PNG] and UTL |
||
| LTC3788EGN-1#PBF | PRODUCTION | |
| LTC3788EGN-1#TRPBF | PRODUCTION | |
| LTC3788IGN-1#PBF | PRODUCTION | |
| LTC3788IGN-1#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) |
||
| LTC3788EGN-1#PBF | PRODUCTION | |
| LTC3788EGN-1#TRPBF | PRODUCTION | |
| LTC3788IGN-1#PBF | PRODUCTION | |
| LTC3788IGN-1#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareTools & Simulations
LTspice 3
- LTC3788-1/LTC4440-5 Demo Circuit - Two-Stage High Voltage Boost Converter (3-36V to 140V @ 1A)
- LTC3788-1 Demo Circuit - High Efficiency Dual Boost Regulator with Independent Inputs (12-24V to 24V @ 5A & 5-12V to 12V @ 10A)
- LTC3788-1 Demo Circuit - High Efficiency Dual 12V/24V Boost Converter with Rsense Current Sensing (4.5-24V to 24V @ 5A & 12V @ 10A)
Models for the following parts are available in LTspice:
- LTC3788
- LTC3788-1
LTpowerCAD
Design tools for the following parts are available in LTpowerCAD:
- LTC3788
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.
Latest Discussions
No discussions on LTC3788-1 yet. Have something to say?
Start a Discussion on EngineerZone®