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Product Detailed Parameters
- Description：IC REG BUCK ADJ 1A 8SOPJ
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：7V
- Voltage - Input (Max)：26V
- Voltage - Output (Min/Fixed)：1V
- Voltage - Output (Max)：18.2V
- Current - Output：1A
- Frequency - Switching：570kHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOP-J
- Grade：-
- Qualification：-
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Overview
The BD9E102FJ-E2 is a single-channel synchronous buck DC/DC converter manufactured by ROHM Semiconductor. It integrates a power MOSFET and operates within an input voltage range of 7 V to 26 V, delivering a maximum output current of 1 A. The device supports adjustable output voltages from 1 V to 18.2 V with a fixed switching frequency of 570 kHz. Key electrical specifications include a typical quiescent current of 10 uA and an operating supply current of 250 uA. It functions reliably across a temperature range of -40°C to +85°C.
Feature Summary
- Integrates a low on-resistance power MOSFET for efficient synchronous rectification in a compact form factor.
- Employs current mode control architecture to ensure rapid transient response and simplified phase compensation.
Applications
- Industrial equipment requiring stable low-voltage power distribution
- Embedded systems needing high-efficiency step-down conversion
- Portable devices utilizing battery or regulated bus inputs
Procurement Notes
Verify the specific suffix E2 against the manufacturer's latest documentation to confirm package details and RoHS compliance status. Confirm availability as product lifecycle status may vary. Ensure the ordering part number matches the required tape and reel quantity specifications for manufacturing integration.
Selection Notes
Select this component when a 1 A synchronous buck solution is required with a wide 7 V to 26 V input range. The integrated MOSFET design reduces external component count compared to non-integrated alternatives. Consider the 570 kHz switching frequency for balancing efficiency and passive component size requirements in space-constrained designs.
Part Context
This device belongs to the BD9E series of integrated MOSFET DC-DC converters from ROHM. These regulators utilize constant on-time control methods to achieve fast transient responses while maintaining low standby power consumption. The series is designed for applications demanding high efficiency under light load conditions.
Replacement Considerations
BD9E104FJ-E2 offers similar topology but with different output voltage limits. BD9E302EFJ-E2 provides higher current capacity at 3 A. Verify pin compatibility and thermal performance before substituting.
