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Product Detailed Parameters
- Description：IC REG BUCK ADJ 4A 8TSOP
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：4.75V
- Voltage - Input (Max)：18V
- Voltage - Output (Min/Fixed)：0.9V
- Voltage - Output (Max)：16.2V
- Current - Output：4A
- Frequency - Switching：380kHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Supplier Device Package：8-TSOP
- Grade：-
- Qualification：-
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Overview
The BD9327EFJ-E2 is a single-step-down DC/DC converter manufactured by ROHM Semiconductor, housed in an HTSOP-J8 surface-mount package. It operates within an input voltage range of 4.75 V to 18 V and delivers up to 4 A of output current. The device integrates a low on-resistance power MOSFET and functions at a switching frequency of 380 kHz. Key electrical specifications include a maximum output voltage of 18 V, a typical static current of 80 uA, and an operating temperature range from -40°C to +85°C.
Feature Summary
- Integrates a low on-resistance power MOSFET with the controller on a single chip to reduce external component count and cost.
- Employs current-mode control architecture to achieve high-speed response characteristics and simplified phase compensation.
- Features a wide input voltage range suitable for various power supply applications.
Applications
- General-purpose power supplies for digital equipment
- Embedded systems requiring efficient step-down conversion
- Industrial control modules
Procurement Notes
Verify the specific suffix E2 against the manufacturer's datasheet to confirm pinout compatibility and RoHS status. Confirm that the HTSOP-J8 package dimensions match your PCB footprint requirements. Ensure thermal management strategies align with the 85°C maximum operating temperature specification under expected load conditions.
Selection Notes
Select this component when a single-channel buck converter with integrated FETs is required for space-constrained designs. It is suitable for applications needing up to 4 A output current with an input voltage up to 18 V. Consider the 380 kHz switching frequency for balancing efficiency and passive component size compared to higher-frequency alternatives.
Part Context
This part belongs to the BD9327EFJ series of synchronous buck converters. It is designed as a compact solution for replacing discrete MOSFET and driver combinations. The integration aims to simplify circuit design while maintaining high efficiency in power management systems.
Replacement Considerations
Check for direct substitutes within the BD9327EFJ family or other ROHM single-output buck converters with similar current ratings and input voltage ranges. Verify pin-to-pin compatibility if swapping packages.
