BD81870EFV-ME2

Overview

The BD81870EFV-ME2 is a dual-channel buck-boost and inverting DC/DC converter switch regulator IC manufactured by Rohm Semiconductor. Designed for automotive applications, it features an adjustable output voltage range from -13V to 18V with two independent outputs. The device operates within an input voltage range of 2.5V to 5.5V and supports a switching frequency up to 2.1MHz. It is housed in a 20-HTSSOP-B package with a bare pad, rated for operation between -40°C and 105°C, and holds AEC-Q100 qualification.

Feature Summary

• Integrates two independent channels supporting buck, boost, and inverting topologies for flexible power rail generation.
• Includes built-in Nch and Pch FETs along with high-side switches featuring soft-start functionality for efficient power conversion.
• Provides comprehensive circuit protection mechanisms including over-current protection, short-circuit protection, over-voltage protection, under-voltage lockout, and thermal shutdown.
• Supports independent ON/OFF control signals and incorporates built-in discharge switches for safe power management.

Applications

• Automotive instrument clusters requiring multiple voltage rails
• In-vehicle center panel displays and infotainment systems
• Car navigation units needing negative and positive supply voltages
• General automotive electronic control units (ECUs) with strict temperature requirements

Procurement Notes

Verify the specific suffix ME2 against the official Rohm datasheet to confirm pinout compatibility and electrical specifications. Ensure the procurement channel provides genuine components with traceable origin documentation. Confirm that the received inventory matches the 20-HTSSOP-B package dimensions and bare pad thermal requirements specified in the mechanical drawings. Cross-reference the manufacturing date code to ensure compliance with current RoHS3 standards.

Selection Notes

Select this component when designing automotive systems requiring simultaneous positive and negative voltage generation from a single low-voltage input source. It is suitable for applications demanding high-frequency operation to minimize external passive component size while maintaining efficiency. Consider the thermal performance of the bare pad package for heat dissipation needs in compact enclosures. Verify that the required output voltage ranges fall within the adjustable limits supported by the feedback network configuration.

Part Context

This part belongs to the BD81870 series of multi-channel DC/DC converters designed specifically for automotive environments. It complements other Rohm PMIC solutions by offering integrated power stages and control logic in a compact form factor. The series is engineered to meet the rigorous reliability standards of modern vehicle electronics, providing a robust alternative to discrete solution designs.

Replacement Considerations

Check for direct substitutes within the BD81870 family or compatible ROHM automotive PMIC lines. Verify pin-to-pin compatibility if replacing with similar dual-channel regulators. Ensure that any alternative component meets the same AEC-Q100 grade and operating temperature range requirements.

FAQ

What protection features are integrated into the BD81870EFV-ME2?

The IC includes over-current protection (OCP), short-circuit protection (SCP), over-voltage protection (OVP), under-voltage lockout (UVLO), and thermal shutdown (TSD).

Can the BD81870EFV-ME2 generate both positive and negative voltages simultaneously?

Yes, it supports dual outputs configured for both positive and negative voltage regulation using its buck-boost and inverting topology options.

Is the BD81870EFV-ME2 qualified for automotive use?

Yes, the component is AEC-Q100 qualified and designed for automotive-grade applications with an operating temperature range of -40°C to 105°C.