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Product Detailed Parameters
- Description：IC REG BUCK 850A 7DIPK
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tube
- Function：-
- Output Configuration：Positive
- Topology：Buck
- Output Type：-
- Number of Outputs：1
- Voltage - Input (Min)：12V
- Voltage - Input (Max)：16.2V
- Voltage - Output (Min/Fixed)：-
- Voltage - Output (Max)：-
- Current - Output：850µA
- Frequency - Switching：65kHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 105°C (TA)
- Mounting Type：Through Hole
- Package / Case：8-DIP (0.300", 7.62mm), 7 Leads
- Supplier Device Package：7-DIPK
- Grade：-
- Qualification：-
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Overview
The BM2P151X-Z is a non-isolated PWM DC/DC converter IC with an integrated switching MOSFET, designed for AC/DC power supplies in socket-equipped devices. It operates within a 12 V to 16.2 V input range and features a fixed 65 kHz switching frequency. The device includes a 650 V startup circuit, current detection resistor, and burst operation at light load. Key electrical parameters include a maximum drain voltage of 650 V, an on-resistance of 1.5 Ω, and a quiescent current of 1.05 mA. It supports thermal shutdown, UVLO, and OVP, functioning between -40 °C and +105 °C in a DIP-7 package.
Feature Summary
- Integrates a 650 V super junction MOSFET and startup circuit for simplified design and low power consumption.
- Employs PWM current mode control with per-cycle current limiting for superior bandwidth and transient response.
- Features built-in frequency hopping and burst operation at light load to reduce EMI and improve efficiency.
- Includes internal current detection resistor to enable compact power supply designs.
Applications
- Power systems for consumer electronics with AC sockets
- Non-isolated high-efficiency DC/DC converters
- Low standby power applications
Procurement Notes
Verify the specific suffix and package type against official ROHM documentation before ordering. Confirm that the application does not involve automotive equipment, as this component is designated for standard-grade use only. Ensure compatibility with the intended input voltage range of 12 V to 16.2 V. Check for RoHS compliance status in the latest datasheet. Validate thermal management requirements given the operating temperature limits.
Selection Notes
Select this IC for non-isolated AC/DC conversion where compact size and low standby power are critical. It is suitable for designs requiring fixed 65 kHz switching frequency and integrated protection features. Consider the DIP-7 package for through-hole mounting. Evaluate the need for burst mode operation to meet efficiency standards at light loads. Ensure the design accommodates the 650 V drain voltage rating.
Part Context
The BM2P151X-Z belongs to ROHM's series of AC/DC converter ICs aimed at reducing power consumption and miniaturizing designs. It integrates a POWER MOSFET and rich protection circuits. This model specifically targets non-isolated applications, offering a cost-effective solution for standard-grade power supplies in consumer electronics.
Replacement Considerations
BM2P151S-Z and BM2P151W-Z are similar models within the same family. Verify pinout and parameter differences such as MOSFET on-resistance (1.5 Ω vs 1.9 Ω) before substitution. Ensure the replacement meets the specific non-isolated requirement and input voltage constraints.
