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Product Detailed Parameters
- Description：IC REG BUCK 1.3V 1A UCSP35L1
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：2.3V
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：1.3V
- Voltage - Output (Max)：-
- Current - Output：1A
- Frequency - Switching：4.3MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：6-XFBGA, CSPBGA
- Supplier Device Package：UCSP35L1
- Grade：-
- Qualification：-
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Overview
The BU90009GWZ-E2 is a step-down switching regulator manufactured by ROHM Semiconductor, designed for efficient power management in compact electronic systems. It operates within an input voltage range of 2.3 V to 5.5 V and provides a fixed output voltage of 1.3 V with a maximum output current capability of 1 A. The device features a high switching frequency between 3.8 MHz and 4.8 MHz, enabling the use of small external components. It maintains a low static current of 45 uA and functions reliably across an operating temperature range from -40°C to +85°C.
Feature Summary
- Integrates buck topology for efficient DC-DC conversion
- Supports shutdown mode for power conservation
- Utilizes UCSP35L1-6 package for space-constrained designs
Applications
- Portable consumer electronics requiring compact power solutions
- Battery-powered devices needing efficient voltage regulation
- Embedded systems operating within specified voltage and temperature ranges
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels due to end-of-life status. Confirm RoHS compliance documentation matches specific production batches. Ensure storage conditions adhere to semiconductor handling standards to prevent moisture sensitivity damage prior to assembly.
Selection Notes
Evaluate thermal performance requirements against the specified operating temperature limits. Consider the fixed 1.3 V output constraint relative to target load specifications. Assess PCB layout constraints regarding the UCSP35L1-6 package dimensions and high-frequency switching noise implications on surrounding circuitry.
Part Context
This component belongs to the ROHM BU9000 series of switching regulators, focusing on miniaturization and efficiency. It serves as a specialized power management integrated circuit (PMIC) within the broader portfolio of DC/DC converters offered by the manufacturer for mobile and portable applications.
Replacement Considerations
The part number alias BU90009GWZ represents the same functional unit without the suffix designation. Verify pinout compatibility and electrical specifications when considering alternative buck regulators from other manufacturers.
