LT3489
PRODUCTION2MHz Boost DC/DC Converter with 2.5A Switch and Soft-Start
- Part Models
- 2
- 1ku List Price
- Starting From $2.36
Part Details
- 2.5A, 0.12Ω, 40V Internal Switch
- 2MHz Switching Frequency
- Integrated Soft-Start Function
- VIN Range: 2.6V to 16V
- Adjustable Output from VIN to 40V
- Low VCESAT Switch: 110mV at 1A (Typical)
- 8V at 610mA from a 3.3V Input
- Internal or External Loop Compensation
- Small 8-Lead MS8E
The LT3489 is a fixed frequency step-up DC/DC converter containing an internal 2.5A, 40V switch. The LT3489 is ideal for large TFT-LCD panel power supplies. The LT3489 switches at 2MHz, allowing the use of tiny, low profile inductors and low value ceramic capacitors. Loop compensation can be either internal or external, giving the user flexibility in setting loop compensation and allowing optimized transient response with low ESR ceramic output capacitors. Soft-start is controlled with an external capacitor, which determines the input current ramp rate during start-up.
The 8-lead MS8E package and high switching frequency ensure a low profile overall solution less than 1.1mm high.
Applications
- TFT-LCD Bias Supplies
- GPS Receivers
- DSL Modems
- Local Power Supply
Documentation
Data Sheet 1
Reliability Data 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 |
|---|---|---|---|
| LT3489EMS8E#PBF | 8-Lead MSOP w/ EP | ||
| LT3489EMS8E#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) |
||
| LT3489EMS8E#PBF | PRODUCTION | |
| LT3489EMS8E#TRPBF | PRODUCTION | |
|
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LT3489EMS8E#PBF | PRODUCTION | |
| LT3489EMS8E#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareTools & Simulations
LTspice 2
- LT3489 - Display Control and Power
- LT3489 Demo Circuit - 2.5A, 2MHz, Boost Converter for TFT supplies (3.3V to 8V@610mA, 23V@10mA, & -8V@20mA)
Models for the following parts are available in LTspice:
- LT3489
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
LT3489EMS8E Demo Board | Triple Output, Boost Plus 23V Charge Pump & -8V Inverting Charge Pump