Features and Benefits
- Complete Step-Down Switch Mode Power Supply
- Wide Input Voltage Range: 3.6V to 36V
- 1A Output Current
- 0.8V to 10V Output Voltage
- Switching Frequency from 200kHz to 2.4MHz
- EN55022 Class B Compliant with Margin
- Current Mode Control
- (e4) RoHS Compliant Package with Gold Pad Finish
- Programmable Soft-Start
- Pin Compatible with the LTM8032
- Low Profile (9mm × 15mm × 2.82mm) Surface Mount LGA Package
The LTM8031 is an electromagnetic compatible (EMC) 36V, 1A DC/DC μModule® (power module) buck converter designed to meet the radiated emissions requirements of EN55022. Conducted emission requirements can be met by adding standard filter components. Included in the package are the switching controller, power switches, inductor, filters and all support components. Operating over an input voltage range of 3.6V to 36V, the LTM8031 supports an output voltage range of 0.8V to 10V, and a switching frequency range of 200kHz to 2.4MHz, each set by a single resistor. Only the bulk input and output filter capacitors are needed to finish the design. The low profile package (2.82mm) enables utilization of unused space on the bottom of PC boards for high density point of load regulation.
The LTM8031 is packaged in a thermally enhanced, compact (9mm × 15mm) and low profile (2.82mm) overmolded land grid array (LGA) package suitable for automated assembly by standard surface mount equipment. The LTM8031 is RoHS compliant.
- Automotive Battery Regulation
- Power for Portable Products
- Distributed Supply Regulation
- Industrial Supplies
- Wall Transformer Regulation
Markets and Technologies
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)
Demonstration circuit DC1597A features the LTM8031, a step-down converter certified to meet the EN55022 radiated emissions standard. The LTM8031 is configured to deliver a 3.3V output from a 5V to 36V input with a 750kHz operating frequency. The wide input range supports a variety of input sources, such as automotive batteries, wall adaptors and industrial supplies. Under light load conditions, the LTM8031 enters Burst Mode® operation to deliver high efficiency over a broad current range and maintain low output ripple.
Documentation & Resources
R598 Reliability Data3/26/201841 K
EMC Test Report EMCS816553/26/2018405 K
DC1597A - Demo Manual1/24/2011967K
μModule Power Products Simplify Power4/11/20189 M
Low EMI μModule Regulators6/22/2017327K
μModule Power Products4/4/201710M
Tools & Simulations
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.