LTC3637
RECOMMENDED FOR NEW DESIGNS76V, 1A Step-Down Regulator
- Part Models
- 18
- 1ku List Price
- Starting From $4.87
Overview
- Wide Operating Input Voltage Range: 4V to 76V
- Internal 350mΩ Power MOSFET
- No Compensation Required
- Adjustable 100mA to 1A Maximum Output Current
- Low Dropout Operation: 100% Duty Cycle
- Low Quiescent Current: 12μA
- Wide Output Range: 0.8V to VIN
- 0.8V ±1% Feedback Voltage Reference
- Precise RUN Pin Threshold
- Internal and External Soft-Start
- Programmable 1.8V, 3.3V, 5V or Adjustable Output
- Few External Components Required
- Programmable Input Overvoltage Lockout
- Low Profile (0.75mm) 3mm × 5mm DFN and Thermally-Enhanced MSE16 Packages
- AEC-Q100 Qualified for Automotive Applications
The LTC3637 is a high efficiency step-down DC/DC regulator with an internal high side power switch that draws only 12μA DC supply current while maintaining a regulated output voltage at no load.
The LTC3637 can supply up to 1A load current and features a programmable peak current limit that provides a simple method for optimizing efficiency and for reducing output ripple and component size. The LTC3637’s combination of Burst Mode® operation, integrated power switch, low quiescent current, and programmable peak current limit provides high efficiency over a broad range of load currents.
With its wide input range of 4V to 76V, and programmable overvoltage lockout, the LTC3637 is a robust regulator suited for regulating from a wide variety of power sources. Additionally, the LTC3637 includes a precise run threshold and soft-start feature to guarantee that the power system start-up is well-controlled in any environment.
The LTC3637 is available in the thermally-enhanced 3mm × 5mm DFN and the MSE16 packages.
APPLICATIONS
- Industrial Control Supplies
- Medical Devices
- Distributed Power Systems
- Portable Instruments
- Battery-Operated Devices
- Automotive
- Avionics
Documentation
Data Sheet 1
User Guide 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 |
|---|---|---|---|
| LTC3637EDHC#PBF | 16-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3637EDHC#TRPBF | 16-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3637EMSE#PBF | 16(12)-Lead MSOP w/ EP | ||
| LTC3637EMSE#TRPBF | 16(12)-Lead MSOP w/ EP | ||
| LTC3637HDHC#PBF | 16-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3637HDHC#TRPBF | 16-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3637HMSE#PBF | 16(12)-Lead MSOP w/ EP | ||
| LTC3637HMSE#TRPBF | 16(12)-Lead MSOP w/ EP | ||
| LTC3637IDHC#PBF | 16-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3637IDHC#TRPBF | 16-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3637IMSE#PBF | 16(12)-Lead MSOP w/ EP | ||
| LTC3637IMSE#TRPBF | 16(12)-Lead MSOP w/ EP | ||
| LTC3637JMSE#WPBF | 16(12)-Lead MSOP w/ EP | ||
| LTC3637JMSE#WTRPBF | 16(12)-Lead MSOP w/ EP | ||
| LTC3637MPDHC#PBF | 16-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3637MPDHC#TRPBF | 16-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3637MPMSE#PBF | 16(12)-Lead MSOP w/ EP | ||
| LTC3637MPMSE#TRPBF | 16(12)-Lead MSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 17, 2025 - 25_0043 Change of Gold to Copper Wire and BOM (Automotive) |
||
| LTC3637EDHC#PBF | PRODUCTION | |
| LTC3637EDHC#TRPBF | PRODUCTION | |
| LTC3637HDHC#PBF | PRODUCTION | |
| LTC3637HDHC#TRPBF | PRODUCTION | |
| LTC3637IDHC#PBF | PRODUCTION | |
| LTC3637IDHC#TRPBF | PRODUCTION | |
|
Mar 25, 2025 - 25_0033 LTC3637 Die Revision |
||
| LTC3637EDHC#PBF | PRODUCTION | |
| LTC3637EDHC#TRPBF | PRODUCTION | |
| LTC3637EMSE#PBF | PRODUCTION | |
| LTC3637EMSE#TRPBF | PRODUCTION | |
| LTC3637HDHC#PBF | PRODUCTION | |
| LTC3637HDHC#TRPBF | PRODUCTION | |
| LTC3637HMSE#PBF | PRODUCTION | |
| LTC3637HMSE#TRPBF | PRODUCTION | |
| LTC3637IDHC#PBF | PRODUCTION | |
| LTC3637IDHC#TRPBF | PRODUCTION | |
| LTC3637IMSE#PBF | PRODUCTION | |
| LTC3637IMSE#TRPBF | PRODUCTION | |
| LTC3637JMSE#WPBF | PRODUCTION | |
| LTC3637JMSE#WTRPBF | PRODUCTION | |
| LTC3637MPDHC#PBF | PRODUCTION | |
| LTC3637MPDHC#TRPBF | PRODUCTION | |
| LTC3637MPMSE#PBF | PRODUCTION | |
| LTC3637MPMSE#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) |
||
| LTC3637EDHC#PBF | PRODUCTION | |
| LTC3637EDHC#TRPBF | PRODUCTION | |
| LTC3637EMSE#PBF | PRODUCTION | |
| LTC3637EMSE#TRPBF | PRODUCTION | |
| LTC3637HDHC#PBF | PRODUCTION | |
| LTC3637HDHC#TRPBF | PRODUCTION | |
| LTC3637HMSE#PBF | PRODUCTION | |
| LTC3637HMSE#TRPBF | PRODUCTION | |
| LTC3637IDHC#PBF | PRODUCTION | |
| LTC3637IDHC#TRPBF | PRODUCTION | |
| LTC3637IMSE#PBF | PRODUCTION | |
| LTC3637IMSE#TRPBF | PRODUCTION | |
| LTC3637MPDHC#PBF | PRODUCTION | |
| LTC3637MPDHC#TRPBF | PRODUCTION | |
| LTC3637MPMSE#PBF | PRODUCTION | |
| LTC3637MPMSE#TRPBF | PRODUCTION | |
|
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2) |
||
| LTC3637EMSE#PBF | PRODUCTION | |
| LTC3637EMSE#TRPBF | PRODUCTION | |
| LTC3637HMSE#PBF | PRODUCTION | |
| LTC3637HMSE#TRPBF | PRODUCTION | |
| LTC3637IMSE#PBF | PRODUCTION | |
| LTC3637IMSE#TRPBF | PRODUCTION | |
| LTC3637JMSE#WPBF | PRODUCTION | |
| LTC3637JMSE#WTRPBF | PRODUCTION | |
| LTC3637MPMSE#PBF | PRODUCTION | |
| LTC3637MPMSE#TRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0129 Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC3637EMSE#PBF | PRODUCTION | |
| LTC3637EMSE#TRPBF | PRODUCTION | |
| LTC3637HMSE#PBF | PRODUCTION | |
| LTC3637HMSE#TRPBF | PRODUCTION | |
| LTC3637IMSE#PBF | PRODUCTION | |
| LTC3637IMSE#TRPBF | PRODUCTION | |
| LTC3637MPMSE#PBF | PRODUCTION | |
| LTC3637MPMSE#TRPBF | PRODUCTION | |
|
Apr 17, 2025 - 25_0119 Bond Wire Change from Gold to Copper (Automotive) |
||
| LTC3637HMSE#PBF | PRODUCTION | |
| LTC3637HMSE#TRPBF | PRODUCTION | |
|
Oct 27, 2021 - 21_0154 Moisture Sensitivity Level Rating Change of LT8331, LTC3637, and LTC7000-1 with #W for MSOP Package |
||
| LTC3637JMSE#WPBF | PRODUCTION | |
| LTC3637JMSE#WTRPBF | 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 |
|---|---|---|
| Hot Swap Controllers 1 | ||
| LT4363 | RECOMMENDED FOR NEW DESIGNS | High Voltage Surge Stopper with Current Limit |
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC3637
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.
Evaluation Kits
LTC3637 Demo Board | Micropower Buck, 4V ≤ VIN ≤ 76V, VOUT = 1.8V/3.3V/5V/Adjustable @ 1A