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Product Detailed Parameters
- Description：IC REG BUCK ADJ 3A 16UCSP30L1
- 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)：2.7V
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：0.6V
- Voltage - Output (Max)：4.4V
- Current - Output：3A
- Frequency - Switching：1.3MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-XFBGA, CSPBGA
- Supplier Device Package：16-UCSP30L1 (1.98x1.8)
- Grade：-
- Qualification：-
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Overview
The BD9B331GWZ-E2 is a synchronous buck converter from ROHM Semiconductor, designed for automotive applications. It delivers an output current of 3 A with an adjustable voltage range of 0.6 V to 3.3 V. The device operates within an input voltage window of 2.7 V to 5.5 V and supports a switching frequency of 1.3 MHz. It features PFM/PWM control modes and includes a shutdown function. The IC is housed in a UCSP30L1-16 package and functions reliably across a temperature range of -40 °C to +85 °C.
Feature Summary
- Integrated synchronous buck topology with built-in power MOSFETs for high efficiency.
- Supports both PFM and PWM operation modes for optimized light-load performance.
- Adjustable output voltage allows flexible system design configurations.
Applications
- Automotive infotainment systems
- Digital cockpit displays
- On-board charging modules
Procurement Notes
Verify the NRND (Not Recommended for New Designs) status before initiating new projects. Confirm that existing supply chains can support long-term availability requirements. Check for specific automotive qualification certifications required by your application standards. Ensure compatibility with the UCSP30L1-16 footprint during layout finalization.
Selection Notes
Select this component when a compact, high-current automotive-grade buck converter is required. The adjustable output voltage provides flexibility for various logic levels. Consider the 1.3 MHz switching frequency for balancing component size and EMI performance. Verify that the thermal characteristics of the UCSP30L1-16 package meet the system's dissipation needs.
Part Context
This part belongs to the BD9B331 series of integrated MOSFET DC-DC converters. These devices utilize a constant on-time control method to achieve fast transient response. The series is engineered for low standby power consumption, making it suitable for battery-powered or energy-sensitive automotive electronics requiring stable voltage regulation.
Replacement Considerations
BD9B331GWZ is the non-AEC-Q100 qualified version. No direct pin-compatible replacements are listed in public documentation. Evaluate alternative ROHM buck converters if NRND status impacts production longevity.
