2.8VIN to 40VIN Isolated μModule DC/DC Converter
Features and Benefits
- 2kVAC Isolated μModule Converter
- UL60950 Recognized File E464570
- Wide Input Voltage Range: 2.8V to 40V
- VOUT1 Output:
- Up to 450mA (VIN = 24V, VOUT1 = 5V)
- 2.5V to 18V Output Range
- VOUT2 Low Noise Linear Post Regulator:
- Up to 300mA
- 1.2V to 18V Output Range
- Current Mode Control
- Programmable Soft-Start
- User Configurable Undervoltage Lockout
- Low Profile (9mm × 11.25mm × 4.92mm) BGA Package
The LTM8068 is a 2kV AC isolated flyback μModule® (power module) DC/DC converter with LDO post regulator. Included in the package are the switching controller, power switches, transformer, LDO, and all support components. Operating over an input voltage range of 2.8V to 40V, the LTM8068 supports an output voltage range of 2.5V to 18V, set by a single resistor. There is also a linear post regulator whose output voltage is adjustable from 1.2V to 18V as set by a single resistor. Only output and input capacitors are needed to finish the design.
The LTM8068 is packaged in a thermally enhanced, compact (9mm × 11.25mm × 4.92mm) overmolded ball grid array (BGA) package suitable for automated assembly by standard surface mount equipment. The LTM8068 is available with SnPb or RoHS compliant terminal finish.
- Industrial Sensors
- Industrial Switches
- Ground Loop Mitigation
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
The Demo Circuit 2358A is a 2kV AC isolated flyback μModule® DC/DC converter with LDO post regulator featuring the LTM8068. The demo circuit is designed for a 5.6V flyback output and a 5V post regulator output from a 4.5V to 40V input. The current capability of the 5.6V flyback output (VOUT1) varies with input voltage from about 200mA at 4.5VIN to about 460mA at 40VIN. The current capability of the 5V LDO output (VOUT2) is limited by either the VOUT1 loading or the 300mA current limit on the LDO post regulator itself. Figure 1 in the demo manual shows the maximum output current on VOUT1 when VOUT2 is not loaded, and VOUT2 when VOUT1 is unloaded.
Tools & Simulations
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.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
Models for the following parts are available in LTspice:
Press Release (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.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.