LT3782
PRODUCTION2-Phase Step-Up DC/DC Controller
- Part Models
- 6
- 1ku List Price
- Starting From $7.81
Overview
- 2-Phase Operation Reduces Required Input and Output Capacitance
- Programmable Switching Frequency: 150kHz to 500kHz
- 6V to 40V Input Range
- 10V Gate Drive with VCC ≥13V
- High Current Gate Drive (4A)
- Programmable Soft-Start and Current Limit
- Programmable Slope Compensation for High Noise Immunity
- MOSFET Gate Signals with Programmable Falling Edge Delay for External Synchronous Drivers
- Programmable Undervoltage Lockout
- Programmable Duty Cycle Clamp (50% or Higher)
- Thermally Enhanced 28-Lead TSSOP and 4mm x 5mm QFN Packages
The LT3782 is a current mode two phase step-up DC/DC converter controller. Its high switching frequency (up to 500kHz) and 2-phase operation reduce system filtering capacitance and inductance requirements.
With 10V gate drive (VCC ≥13V) and 4A peak drive current, the LT3782 can drive most industrial grade high power MOSFETs with high efficiency. For synchronous applications, the LT3782 provides synchronous gate signals with programmable falling edge delay to avoid cross conduction when using external MOSFET drivers. Other features include programmable undervoltage lockout, soft-start, current limit, duty cycle clamp (50% or higher) and slope compensation.
The LT3782 is available in a thermally enhanced 28-lead TSSOP and 4mm x 5mm QFN packages.
For new designs use the LT3782A which has improved
phase matching
Applications
- Industrial Equipment
- Telecom Infrastructure
- Interleaved Isolated Power Supply
Documentation
Data Sheet 1
User Guide 1
Design Note 3
Press Release 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 |
|---|---|---|---|
| LT3782EFE#PBF | 28-Lead TSSOP w/ EP | ||
| LT3782EFE#TRPBF | 28-Lead TSSOP w/ EP | ||
| LT3782EUFD#PBF | 28-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LT3782EUFD#TRPBF | 28-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LT3782IFE#PBF | 28-Lead TSSOP w/ EP | ||
| LT3782IFE#TRPBF | 28-Lead TSSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
May 18, 2026 - 26_0072 Epoxy Change for Select TSSOP Products |
||
| LT3782EFE#PBF | PRODUCTION | |
| LT3782EFE#TRPBF | PRODUCTION | |
| LT3782IFE#PBF | PRODUCTION | |
| LT3782IFE#TRPBF | PRODUCTION | |
|
Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL |
||
| LT3782EFE#PBF | PRODUCTION | |
| LT3782EFE#TRPBF | PRODUCTION | |
| LT3782IFE#PBF | PRODUCTION | |
| LT3782IFE#TRPBF | PRODUCTION | |
|
Feb 20, 2022 - 21_0269 Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products |
||
| LT3782EUFD#PBF | PRODUCTION | |
| LT3782EUFD#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/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| LTC3862 | PRODUCTION | Multi-Phase Current Mode Step-Up DC/DC Controller |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT3782
- LT3782A
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.
