LT1936
PRODUCTION1.4A, 500kHz Step-Down Switching Regulator
- Part Models
- 6
- 1ku List Price
- Starting From $4.20
Overview
- Wide Input Range: 3.6V to 36V
- Short-Circuit Protected Over Full Input Range
- 1.9A Guaranteed Minimum Switch Current
- 5V at 1.4A from 10V to 36V Input
- 3.3V at 1.4A from 7V to 36V Input
- 5V at 1.2A from 6.3V to 36V Input
- 3.3V at 1.2A from 4.5V to 36V Input
- Output Adjustable Down to 1.20V
- 500kHz Fixed Frequency Operation
- Soft-Start
- Uses Small Ceramic Capacitors
- Internal or External Compensation
- Low Shutdown Current: <2µA
- Thermally Enhanced 8-Lead MSOP Package
The LT1936 is a current mode PWM step-down DC/DC converter with an internal 1.9A power switch, packaged in a tiny, thermally enhanced 8-lead MSOP. The wide input range of 3.6V to 36V makes the LT1936 suitable for regulating power from a wide variety of sources, including automotive batteries, 24V industrial supplies and unregulated wall adapters. Its high operating frequency allows the use of small, low cost inductors and ceramic capacitors, resulting in low, predictable output ripple.
Cycle-by-cycle current limit, frequency foldback and thermal shutdown provide protection against shorted outputs, and soft-start eliminates input current surge during startup. Transient response can be optimized by using external compensation components, or board space can be minimized by using internal compensation. The low current (<2µA) shutdown mode enables easy power management in battery-powered systems.
Applications
- Automotive Battery Regulation
- Industrial Control Supplies
- Unregulated Wall Adapters
Documentation
Data Sheet 1
User Guide 1
Design Note 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 |
|---|---|---|---|
| LT1936EMS8E#PBF | 8-Lead MSOP w/ EP | ||
| LT1936EMS8E#TRPBF | 8-Lead MSOP w/ EP | ||
| LT1936HMS8E#PBF | 8-Lead MSOP w/ EP | ||
| LT1936HMS8E#TRPBF | 8-Lead MSOP w/ EP | ||
| LT1936IMS8E#PBF | 8-Lead MSOP w/ EP | ||
| LT1936IMS8E#TRPBF | 8-Lead MSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2) |
||
| LT1936EMS8E#PBF | PRODUCTION | |
| LT1936EMS8E#TRPBF | PRODUCTION | |
| LT1936HMS8E#PBF | PRODUCTION | |
| LT1936HMS8E#TRPBF | PRODUCTION | |
| LT1936IMS8E#PBF | PRODUCTION | |
| LT1936IMS8E#TRPBF | PRODUCTION | |
|
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LT1936EMS8E#PBF | PRODUCTION | |
| LT1936EMS8E#TRPBF | PRODUCTION | |
| LT1936HMS8E#PBF | PRODUCTION | |
| LT1936HMS8E#TRPBF | PRODUCTION | |
| LT1936IMS8E#PBF | PRODUCTION | |
| LT1936IMS8E#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 |
|---|---|---|
| Circuit Monitors 1 | ||
| LTC2960 | RECOMMENDED FOR NEW DESIGNS | 36V Nano-Current Two-Input Voltage Monitor |
| Hot Swap Controllers 1 | ||
| LT4363 | RECOMMENDED FOR NEW DESIGNS | High Voltage Surge Stopper with Current Limit |
| Power System Management (PSM) & Sequencers 1 | ||
| LTC2974 | RECOMMENDED FOR NEW DESIGNS | 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement |
| Switching Regulators & Controllers 1 | ||
| LTC3880 | RECOMMENDED FOR NEW DESIGNS | Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT1936
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
LT1936EMS8E Demo Board | VIN = 4.5V to 36V, VOUT = 5V or 3.3V @1.2A