BM2P189TF-E2

Overview

The BM2P189TF-E2 is a PWM type DC/DC converter IC designed for non-isolated applications, featuring an integrated switching MOSFET. It operates within an input voltage range of 10.6 V to 19.45 V and supports a maximum drain voltage of 650 V. The device utilizes a fixed switching frequency of 100 kHz with built-in frequency hopping functionality to mitigate electromagnetic interference. Key electrical parameters include a 9.5 Ω on-resistance for the internal MOSFET and a standby power consumption current of 850 uA. It is housed in a SOP-8 package measuring 5.0 x 6.2 mm with a thickness of 1.71 mm.

Feature Summary

• Integrates a 650 V rated Super Junction MOSFET and a dedicated start-up circuit to facilitate low-power design.
• Employs current mode control with per-cycle current limiting to ensure stable bandwidth and transient response.
• Includes built-in current detection resistance to enable compact power supply designs without external sensing components.
• Features frequency hopping and burst operation at light loads to reduce electromagnetic interference and improve efficiency.

Applications

• Non-isolated high-efficiency converter designs
• Compact power supply systems requiring integrated switching solutions
• General purpose DC/DC conversion circuits

Procurement Notes

Verify the specific suffix (E2) against the manufacturer's official documentation to confirm tape-and-reel packaging and quantity specifications. Ensure that the application environment remains within the specified operating temperature range of -40°C to +105°C. Confirm that the input voltage does not exceed the maximum rating of 19.45 V. Check for any regional compliance requirements regarding RoHS standards. Validate that the SOP-8 package dimensions align with the target PCB layout constraints.

Selection Notes

Select this component when a non-isolated topology is required with an input voltage up to 19.45 V. The integrated 650 V MOSFET simplifies design by eliminating external switch selection. Consider the 100 kHz fixed frequency with frequency hopping if EMI reduction is a priority. The built-in current detection resistor reduces bill of materials count. Ensure the application does not require automotive qualification, as this product is not recommended for such use.

Part Context

This part belongs to ROHM's COMPACT series of AC/DC converters, specifically tailored for non-isolated buck converter applications. It is part of a family of PWM type DC/DC converter ICs that integrate switching MOSFETs to streamline power management design. The series emphasizes high efficiency and compact form factors through integrated features like start-up circuits and current detection.

Replacement Considerations

BM2P189TF