LT3759
PRODUCTIONWide Input Voltage Range Boost/SEPIC/Inverting Controller
- Part Models
- 6
- 1ku List Price
- Starting From $3.60
Overview
- Wide VIN Range: 1.6V to 42V
- Positive or Negative Output Voltage Programming with a Single Feedback Pin
- PGOOD Output Voltage Status Report
- Accurate 50mV SENSE Threshold Voltage
- Programmable Soft-Start
- Programmable Operating Frequency (100kHz to 1MHz) with One External Resistor
- Synchronizable to an External Clock
- Low Shutdown Current < 1μA
- INTVCC Regulator Supplied from VIN or DRIVE
- Programmable Input Undervoltage Lockout with Hysteresis
The LT3759 is a wide input range, current mode, DC/DC controller which is capable of regulating either positive or negative output voltages from a single feedback pin. It can be configured as a boost, SEPIC or inverting converter.
The LT3759 drives a low side external N-channel power MOSFET. An internal LDO regulator draws power from VIN or DRIVE to provide up to a 4.75V supply for the gate driver. The fixed frequency, current-mode architecture results in stable operation over a wide range of supply and output voltages. The operating frequency of LT3759 can be set over a 100kHz to 1MHz range with an external resistor, or can be synchronized to an external clock using the SYNC pin.
The LT3759 features soft-start and frequency foldback functions to limit inductor current during start-up and output short-circuit. A window comparator on the FBX pin reports via the PGOOD pin, providing output voltage status indication. The device is available in a 12-Lead exposed pad MSOP package.
Applications
- Datacom and Industrial Boost, SEPIC and Inverting Converters
- Distributed Power Supplies
- Portable Electronic Equipment
- Automotive
Documentation
Data Sheet 1
User Guide 2
Design Note 1
Technical Articles 2
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 |
|---|---|---|---|
| LT3759EMSE#PBF | 12-Lead MSOP w/ EP | ||
| LT3759EMSE#TRPBF | 12-Lead MSOP w/ EP | ||
| LT3759HMSE#PBF | 12-Lead MSOP w/ EP | ||
| LT3759HMSE#TRPBF | 12-Lead MSOP w/ EP | ||
| LT3759IMSE#PBF | 12-Lead MSOP w/ EP | ||
| LT3759IMSE#TRPBF | 12-Lead MSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package |
||
| LT3759EMSE#PBF | PRODUCTION | |
| LT3759EMSE#TRPBF | PRODUCTION | |
| LT3759IMSE#PBF | PRODUCTION | |
| LT3759IMSE#TRPBF | PRODUCTION | |
|
Apr 18, 2022 - 22_0050 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices |
||
| LT3759EMSE#PBF | PRODUCTION | |
| LT3759EMSE#TRPBF | PRODUCTION | |
| LT3759IMSE#PBF | PRODUCTION | |
| LT3759IMSE#TRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0129 Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LT3759EMSE#PBF | PRODUCTION | |
| LT3759EMSE#TRPBF | PRODUCTION | |
| LT3759HMSE#PBF | PRODUCTION | |
| LT3759HMSE#TRPBF | PRODUCTION | |
| LT3759IMSE#PBF | PRODUCTION | |
| LT3759IMSE#TRPBF | PRODUCTION | |
|
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2) |
||
| LT3759HMSE#PBF | PRODUCTION | |
| LT3759HMSE#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Oscillators 1 | ||
| LTC6908 | Resistor Set SOT-23 Oscillator with Spread Spectrum Modulation | |
Tools & Simulations
LTspice 4
- LT3759 Demo Circuit - Wide Vin Boost Conveter that Works Down to 1.6V Input (1.6-20V to 48V @ >100mA)
- LT3759 Demo Circuit - Automotive SEPIC Converter (2.5-36V to 12V @ 2A)
- LT3759 Demo Circuit - SEPIC Converter with Wide Input Voltage Range (2.8-36V to 12V @ 1.0A)
- LT3759 Demo Circuit - Boost Converter with Low Input Voltage Range (1.8-4.5V to 5V @ 2.0A)
Models for the following parts are available in LTspice:
- LT3759
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.
