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Product Detailed Parameters
- Description：IC REG BUCK BOOST ADJ 1A 20VQFN
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Buck-Boost
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：2.5V
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：2.8V
- Voltage - Output (Max)：5.2V
- Current - Output：1A
- Frequency - Switching：800kHz ~ 1.2MHz
- Synchronous Rectifier：No
- Operating Temperature：-25°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-VFQFN Exposed Pad
- Supplier Device Package：VQFN020V4040
- Grade：-
- Qualification：-
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Overview
The BD8305MUV-E2 is a switching voltage regulator manufactured by ROHM Semiconductor, classified under PMIC - Power Management ICs. It features a synchronous Buck-Boost topology with an input voltage range of 2.5 V to 5.5 V and provides a single adjustable output from 2.8 V to 5.5 V at up to 1 A. Operating at a fixed 1 MHz switching frequency, the device supports SMD/SMT installation in a VQFNV4040-EP-20 package. The component functions within a temperature range of -25°C to +85°C.
Feature Summary
- Integrates synchronous Buck and Boost converter topologies for flexible voltage regulation across varying input conditions.
- Features an exposed pad (EP) thermal enhanced package design to improve heat dissipation and reliability.
- Supports shutdown functionality to minimize power consumption during inactive periods.
Applications
- Portable electronic devices requiring efficient step-up or step-down conversion from single-cell lithium batteries.
- Embedded systems operating with variable input supply voltages near the desired output level.
- Battery-powered equipment needing stable regulated power despite fluctuating source levels.
Procurement Notes
Verify the current lifecycle status before procurement, as this part may be marked as Not Recommended for New Designs (NRND). Confirm that the VQFNV4040-EP-20 package dimensions align with your PCB footprint requirements. Ensure compatibility with the specified 2.5 V to 5.5 V input range for your specific application circuit. Check for RoHS compliance documentation if required by your manufacturing standards.
Selection Notes
Select this component when designing circuits that require both buck and boost capabilities within a compact form factor. It is suitable for applications where the input voltage may frequently drop below or rise above the target output voltage. Consider the 1 MHz switching frequency for balancing efficiency and external component size. Evaluate the thermal performance of the EP package against your system's heat dissipation constraints.
Part Context
This device belongs to ROHM's series of high-efficiency switching regulators designed for portable electronics. It integrates internal power switches to reduce external component count compared to non-synchronous alternatives. The BD8305MUV-E2 is part of a broader family of PMIC solutions focused on optimizing space and power efficiency in mobile and battery-operated devices.
Replacement Considerations
Consult official manufacturer documentation for qualified replacement parts. Verify pinout compatibility and electrical specifications before substituting. Note that alternative components may differ in package dimensions or thermal characteristics.
