Design Note 373: LT3470 ThinSOT Micropower Buck Regulator Low Output Ripple Application Note

About this manual

The document introduces the LT3470, a monolithic step-down DC/DC converter that integrates the high-side power switch, catch diode, and boost diode into a single ThinSOT package. This integration simplifies circuit design by eliminating external components typically required for high-voltage switching applications.

What's inside

• Introduction
• Current Mode Control
• Design Flexibility with Integrated Boost Diode
• Voltage Ripple
• Provide Input and Output Voltage Range Flexibility

Frequently asked questions

What is the maximum input voltage and load current for the LT3470?

The device accepts an input voltage from 4V to 40V and delivers up to 200mA to a load.

How much current does the LT3470 consume with no load at a 12V input?

It consumes merely 26uA with no load and a 12V input.

What is the maximum output voltage ripple in burst mode operation?

The IC provides single switch-cycle bursts for the lowest possible light-load output voltage ripple of less than 20mV peak-to-peak.