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Product Detailed Parameters
- Description：IC REG BUCK -12V 100MA 9SIP
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tray
- Function：Step-Down
- Output Configuration：Negative
- Topology：Buck
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：8V
- Voltage - Input (Max)：20V
- Voltage - Output (Min/Fixed)：-12V
- Voltage - Output (Max)：-
- Current - Output：100mA
- Frequency - Switching：250kHz
- Synchronous Rectifier：No
- Operating Temperature：-15°C ~ 70°C (TA)
- Mounting Type：Through Hole
- Package / Case：9-SIP, 8 Leads
- Supplier Device Package：9-SIP
- Grade：-
- Qualification：-
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Overview
The BP5122 is a negative fixed-output buck switching regulator IC manufactured by Rohm Semiconductor. It provides a stable -12V output with a maximum current capacity of 100mA. The device operates within an input voltage range of 8V to 20V and features a switching frequency of 250kHz. Designed for through-hole mounting, it utilizes a 9-SIP, 8-lead package. The component supports an operating temperature range from -15°C to 70°C and does not include synchronous rectification.
Feature Summary
- Provides a fixed negative output voltage suitable for specific power supply requirements
- Integrates buck topology for efficient step-down conversion from higher input voltages
- Supports through-hole installation for standard PCB assembly processes
Applications
- Electronic systems requiring negative voltage rails
- Industrial control circuits utilizing through-hole components
- Power management modules for general electronics
Procurement Notes
Verify the current supply status before procurement as the BP5122 may be subject to discontinuation notices. Confirm that the 9-SIP package and through-hole mounting style align with existing board designs. Ensure input voltage constraints between 8V and 20V are compatible with the target application environment.
Selection Notes
Select this component when a fixed -12V negative rail is required with moderate current demands up to 100mA. The non-synchronous buck design suits applications where cost and simplicity are prioritized over peak efficiency. Verify that the thermal performance within the -15°C to 70°C range meets operational needs.
Part Context
This part belongs to Rohm's series of DC-DC switching regulators designed for power management. It serves as a dedicated solution for generating negative voltages in systems that cannot utilize internal charge pumps. The 9-SIP package distinguishes it from surface-mount alternatives in the broader PMIC portfolio.
Replacement Considerations
Check for official substitute part numbers if the BP5122 is discontinued. No direct public substitutes are confirmed in the provided documentation. Evaluate alternative negative buck regulators only if they match the -12V output and SIP package constraints.
