BM2P139TF-E2

$1.50

Description：IC REG BUCK 850A 8SOP
Series：-
Mfr：Rohm Semiconductor
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:f7c900886b07 Category: Voltage Regulators - DC DC Switching Regulators Brand: Rohm Semiconductor

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Product introduction

Product Detailed Parameters

Description：IC REG BUCK 850A 8SOP
Series：-
Mfr：Rohm Semiconductor
Package：Tape & Reel (TR),Cut Tape (CT)
Function：-
Output Configuration：Positive
Topology：Buck
Output Type：-
Number of Outputs：1
Voltage - Input (Min)：10.6V
Voltage - Input (Max)：14.05V
Voltage - Output (Min/Fixed)：-
Voltage - Output (Max)：-
Current - Output：850µA
Frequency - Switching：100kHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 105°C (TA)
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.173", 4.40mm Width)
Supplier Device Package：8-SOP
Grade：-
Qualification：-

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BM2P139TF-E2

Overview

The BM2P139TF-E2 is a PWM-type DC/DC converter IC designed for non-isolated AC/DC applications. It integrates a Super Junction MOSFET with a breakdown voltage of 650V and a built-in start circuit, enabling compact power supply designs without external high-voltage startup components. The device employs current mode control to limit peak current every cycle, ensuring superior bandwidth and transient response performance. A fixed switching frequency of 100 kHz is supported by a frequency hopping function to reduce electromagnetic interference (EMI).

Feature Summary

Integrates a 650V Super Junction MOSFET and a dedicated start circuit to simplify design and reduce component count.
Utilizes current mode control architecture to provide precise peak current limiting and enhanced transient response capabilities.
Features a built-in frequency hopping mechanism to minimize electromagnetic interference emissions during operation.

Applications

Non-isolated AC/DC conversion systems
Compact power supply designs for consumer electronics
Applications requiring reduced standby power consumption

Procurement Notes

Verify the specific suffix against official ROHM documentation to confirm exact packaging configuration and tape-and-reel specifications. Ensure that the ordering part number matches the required operational temperature range and package variant. Cross-reference the datasheet revision history to validate the availability of updated electrical characteristics and thermal data prior to final procurement decisions.

Selection Notes

Select this component for designs prioritizing high efficiency in non-isolated topologies. The integrated Super Junction MOSFET reduces conduction losses compared to standard MOSFETs. Current mode control is suitable for applications demanding fast load transient recovery. Evaluate the fixed 100 kHz frequency against EMI filter requirements, noting the mitigation benefits provided by the internal frequency hopping feature.

Part Context

The BM2P139TF-E2 belongs to the BM2P series of AC/DC converter ICs from ROHM Semiconductor. This family targets high-efficiency, low-power applications by integrating high-voltage switching elements and control logic into a single SOP-8 package. The series emphasizes miniaturization through the elimination of bulky startup resistors and capacitors typically found in conventional flyback converters.