LT1935
PRODUCTION1.2MHz Boost DC/DC Converter in ThinSOT with 2A Switch
- Part Models
- 2
- 1ku List Price
- Starting From $4.13
Overview
- 1.2MHz Switching Frequency
- High Output Voltage: Up to 38V
- Wide Input Range: 2.3V to 16V
- Low VCESAT Switch: 180mV at 2A
- Soft-Start
- Uses Small Surface Mount Components
- 5V at 1A from 3.3V Input
- 12V at 600mA from 5V Input
- Low Shutdown Current: <1µA
- Pin-for-Pin Compatible with the LT1613 and LT1930
- Low Profile (1mm) SOT-23 (ThinSOT™) Package
The LT1935 is the industry’s highest power SOT-23 switching regulator. Its unprecedented 2A, 40V internal switch allows high output currents to be generated in a small footprint. Intended for space-conscious applications, the LT1935 switches at 1.2MHz, allowing the use of tiny, low profile inductors and capacitors 2mm or less in height. The NPN switch achieves a VCESAT of just 180mV at 2A independent of supply voltage, resulting in high efficiency even at maximum power levels from a 3V input.
A constant frequency, internally compensated, current mode PWM architecture results in low, predictable output noise that is easy to filter. Low ESR ceramic capacitors can be used on the output, further reducing noise to the millivolt level. The high voltage switch on the LT1935 is rated at 40V, making the device ideal for boost converters up to 38V as well as for single-ended primary inductance converter (SEPIC) and flyback designs. The device can generate 5V at up to 1A from a 3.3V supply or 5V at 550mA from four alkaline cells in a SEPIC design.
The LT1935 is available in a 5-lead SOT-23 package.
Applications
- Digital Cameras
- Battery Backup
- LCD Bias
- Local 5V or 12V Supply
- PC Cards
- xDSL Power Supply
- TFT-LCD Bias Supply
Documentation
Data Sheet 1
User Guide 1
Technical Articles 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 |
|---|---|---|---|
| LT1935ES5#TRMPBF | 5-Lead TSOT-23 | ||
| LT1935ES5#TRPBF | 5-Lead TSOT-23 |
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 2
- LT1935 Demo Circuit - 5V Boost Converter (2.3-4.8V to 5V @ 600mA)
- LTM4639/LT1935/LTC2997 Demo Circuit - High Efficiency 20A µModule Buck Regulator (2.4-7V to 1.2V @ 20A)
Models for the following parts are available in LTspice:
- LT1935
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
LT1935ES5 Demo Board | 3.3V to 5.5V Input, VOUT = 12V at up to 600mA