LT8570HMS8E#PBF

Overview

The LT8570HMS8E#PBF is a PWM DC/DC converter manufactured by Analog Devices Inc., housed in an MSOP-8 package. It integrates a 65V power switch and supports Boost, SEPIC, and Inverting topologies. The device operates with an input voltage range of 2.55 V to 40 V and delivers up to 400 mA output current. Adjustable output voltages span from 1.204 V to 65 V. Key electrical parameters include a 1.5 MHz switching frequency, 1.2 mA operating supply current, and 1 uA shutdown current. It functions within a temperature range of -40 C to +125 C.

Feature Summary

• Configurable as a boost, SEPIC, or inverting DC/DC converter topology
• Integrates a high-voltage 65V power switch for robust operation
• Supports wide input voltage ranges suitable for various power sources

Applications

• Boost converters generating higher voltages from lower inputs
• SEPIC converters for non-inverting buck-boost applications
• Inverting converters creating negative output rails

Procurement Notes

Verify the specific suffix HMS8E corresponds to the required MSOP-8 package and temperature grade. Confirm RoHS compliance status through official documentation before integration. Ensure the ordering part number matches the exact pinout and electrical specifications required for the design. Cross-reference with the manufacturer's latest datasheet to confirm availability and any potential product change notifications affecting this specific variant.

Selection Notes

Select this component when a flexible topology supporting boost, SEPIC, or inverting configurations is required in a compact MSOP-8 footprint. It is suitable for designs needing a 65V switch rating and adjustable outputs up to 65V. Consider the 1.5 MHz switching frequency for balancing efficiency and external component size. Verify that the 400 mA output current meets the load requirements and that the thermal performance in the MSOP-8 package is adequate for the application.

Part Context

This part belongs to the LT8570 series of PWM DC/DC converters from Analog Devices. The series offers configurable topologies including boost, SEPIC, and inverting modes. Other variants in the family may differ in switch current ratings, such as the LT8570-1 which features a 0.25A switch, or different packages like DFN-8. The MSOP-8 package provides a small form factor for space-constrained designs.

FAQ

What switching frequencies are supported by the LT8570?

The LT8570 supports multiple switching frequencies, including 700kHz, 1.2MHz, and 1.5MHz, depending on the specific configuration and resistor settings.

Can the LT8570 generate negative output voltages?

Yes, the LT8570 can be configured as an inverting converter to generate negative output voltages from a positive input source.