BD14230FVJ-CE2

Overview

The BD14230FVJ-CE2 is a two-channel current sense amplifier manufactured by ROHM Semiconductor, designed for automotive applications. It operates on a single supply voltage ranging from 2.7 V to 5.5 V and supports a wide common-mode voltage range of -14 V to +80 V. The device features a fixed gain of 20 V/V with a maximum gain accuracy of ±1%. Key electrical parameters include an input bias current of 1 μA, an input offset voltage of 500 μV, and a typical operating supply current of 0.3 mA. It functions within a temperature range of -40°C to +125°C and is housed in a TSSOP-B8J package.

Feature Summary

• Supports high-voltage environments up to +80 V common-mode input, suitable for 48 V systems.
• Provides high precision with matched internal gain resistors to minimize gain error and offset voltage.
• Features low input bias current to reduce offset errors across the shunt resistor path.
• Complies with AEC-Q100 Grade 1 standards for automotive reliability.

Applications

• Current sensing in 48 V DC-DC converters
• Battery level monitoring in auxiliary battery systems
• Current feedback and overcurrent limitation in electric compressors

Procurement Notes

Verify the specific suffix CE2 against the manufacturer's official datasheet to confirm packaging details and tape-and-reel specifications. Ensure the component meets the required AEC-Q100 Grade 1 qualification for your target automotive application. Cross-reference the part number with the latest ROHM documentation to confirm availability status and any potential design-in recommendations or evaluation board compatibility.

Selection Notes

Select this component when designing circuits requiring high common-mode voltage tolerance up to 80 V in automotive settings. The fixed 20 V/V gain makes it suitable for direct interface with ADCs in 48 V architectures. Consider the TSSOP-B8J package size for space-constrained PCB layouts. Verify that the system's power supply remains within the 2.7 V to 5.5 V range to ensure proper operation.

Part Context

This device belongs to the BD1423xFVJ-C series of high-precision automotive current sense amplifiers. It shares the same TSSOP-B8J package and functional safety support characteristics as other members of the family, such as the BD14231FVJ-CE2 and BD14232FVJ-CE2. The primary distinction lies in the internal gain setting, which varies across the series to accommodate different signal conditioning requirements.

Replacement Considerations

Direct substitutes within the same series include BD14231FVJ-CE2 (50 V/V gain) and BD14232FVJ-CE2 (100 V/V gain). These parts share identical pinouts, packages, and electrical characteristics except for the fixed internal gain factor. Ensure the system design can accommodate the different gain values if swapping between these variants.