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Product Detailed Parameters
- Description：IC REG BUCK BST ADJ DL UCSP50L1
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Up, Step-Up/Step-Down
- Output Configuration：Positive and Negative (Dual Rail)
- Topology：Boost, Buck-Boost
- Output Type：Adjustable
- Number of Outputs：2
- Voltage - Input (Min)：2.5V
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：5.5V, -1V
- Voltage - Output (Max)：18V, -9V
- Current - Output：1A (Switch)
- Frequency - Switching：1.6MHz
- Synchronous Rectifier：No
- Operating Temperature：-35°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：11-UFBGA, CSPBGA
- Supplier Device Package：UCSP50L1
- Grade：-
- Qualification：-
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Overview
The BD8316GWL-E2 is a dual-channel switching regulator featuring boost and inverting topologies, designed for portable device power supplies. It operates within an input voltage range of 2.5V to 5.5V and supports output voltages up to 18V. The device integrates Nch FETs (230mΩ/22V) and Pch Pow FETs (230mΩ/15V), with a switching frequency setting of up to 1.76MHz. It utilizes the UCSP50L1 package measuring 1.8mm x 1.5mm with a thickness of 0.55mm. Operating temperatures range from -35°C to 85°C.
Feature Summary
- Integrates two independent channels for boost and inverting conversion with built-in FETs to minimize external components.
- Features independent ON/OFF control via STB pins, allowing flexible power sequencing and low-power standby modes.
- Includes comprehensive circuit protection mechanisms such as over-current protection, short-circuit protection, UVLO, and thermal shutdown.
Applications
- Power supply solutions for portable electronic devices
- Miniaturized power management circuits requiring small footprint packages
Procurement Notes
Verify the specific suffix E2 against current ROHM Semiconductor documentation to confirm active status and availability. Ensure compatibility with the UCSP50L1 package dimensions during PCB layout. Confirm that the application environment remains within the specified operating temperature range of -35°C to 85°C. Check for any recent design life notices or end-of-life declarations before finalizing procurement plans.
Selection Notes
Select this component when designing compact power systems for portable electronics requiring both boosted and inverted voltage rails. The integrated FET topology reduces bill of materials by eliminating external switching transistors. Consider the 1.76MHz maximum switching frequency for optimizing inductor size while managing electromagnetic interference. Verify that the load requirements do not exceed the integrated FET capabilities.
Part Context
This part belongs to the BD8316 series of dual-channel switching regulators manufactured by ROHM Semiconductor. It is specifically engineered for applications demanding high efficiency and minimal board space. The UCSP50L1 package represents a wafer-level chip scale packaging solution, facilitating high-density assembly in modern consumer electronics where physical constraints are critical.
Replacement Considerations
Consult official ROHM Semiconductor substitution guides for verified alternatives. No public substitute part numbers are confirmed in the provided source material.
