Linear Technology DC1238B LTM8021 Step-Down µModule Regulator Demo Manual

About this manual

The DC1238B demonstration circuit features the Linear Technology LTM8021, a 36V, 500mA step-down µModule regulator. The output is preset to 5V by a single resistor within the LTM8021's 0.8V to 5V output range, and the default input voltage range is 7.5V to 36V. An adjustable soft-start period can be implemented by adding a capacitor at C3.

The manual gives a performance summary and a quick start procedure, including notes on measuring input or output voltage ripple. It also includes a parts list, a schematic diagram and the demonstration board important notice.

What's inside

• Description
• Performance Summary
• Quick Start Procedure
• Measuring Input or Output Voltage Ripple
• Parts List
• Schematic Diagram
• Demonstration Board Important Notice

Specifications

Frequently asked questions

What output voltage does the DC1238B provide by default?

The output is preset to 5V by a single resistor.

What input voltage range does the DC1238B use under default operating conditions?

The input voltage range is 7.5V to 36V.

What is the maximum continuous output current?

The maximum continuous output current is 500mA.

How should input or output voltage ripple be measured?

Touch the probe tip directly across the VIN or VOUT and GND terminals and avoid a long ground lead.