MP161BGS-5-Z

Overview

The MP161BGS-5-Z is a specialized power management IC from Monolithic Power Systems, designed as an ultra-low standby power solution. It integrates a switching regulator with a 420mA current limit and features a SOIC-16 surface-mount package. The device operates within a temperature range of -40°C to +125°C and consumes 600µA of quiescent current. It provides a regulated output voltage between 4.9V and 5.1V, with a maximum output of 5.1V and a power dissipation rating of 1.56W.

Feature Summary

• Integrates a non-isolated buck regulator with built-in current limiting for compact designs
• Optimized for ultra-low standby power consumption in always-on applications
• Includes an integrated low-dropout regulator (LDO) for auxiliary supply generation

Applications

• Smart plug reference designs utilizing ESP8266 modules
• Non-isolated offline power supplies
• Always-on IoT devices requiring minimal quiescent current

Procurement Notes

Verify the suffix 'Z' against official MPS documentation to confirm RoHS compliance status, as datasheet availability varies by distributor. Confirm moisture sensitivity levels and reflow soldering profiles prior to assembly. Ensure the specific variant matches the required output voltage tolerance and current limit specifications for your target application.

Selection Notes

Select this component when designing offline converters that require both a main switched output and a stable auxiliary rail. The integrated LDO simplifies biasing circuits compared to discrete solutions. Consider the SOIC-16 package constraints and thermal dissipation capabilities relative to the 1.56W power rating during layout planning.

Part Context

This part belongs to the MP161 family of specialized PMICs focused on smart home and IoT power efficiency. It shares architectural similarities with variants like the MP161AGS-5-P but offers distinct pinout or parameter configurations suited for specific non-isolated topologies.

Replacement Considerations

The MP161AGS-5-P is a documented variant within the same series. Verify functional equivalence regarding current limits and pin compatibility before substitution.