ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REG BUCK ADJ 2A VQFN20SV4040
- 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)：2.6V
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：0.6V
- Voltage - Output (Max)：5V
- Current - Output：2A
- Frequency - Switching：300kHz ~ 2.4MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-VFQFN Exposed Pad
- Supplier Device Package：VQFN20SV4040
- Grade：Automotive
- Qualification：AEC-Q100
Download product information
Overview
The BD90521MUV-CE2 is a synchronous step-down DC/DC converter manufactured by ROHM Semiconductor. It operates with an input voltage range of 2.6 V to 5.5 V and provides a single adjustable output voltage from 600 mV to 5 V. The device supports a maximum output current of 2 A. It features a switchable switching frequency ranging from 300 kHz to 2.4 MHz, enabling the use of smaller external inductors. The IC includes integrated Pch and Nch output MOSFETs and functions in current mode control for excellent load response. It is qualified under AEC-Q100 standards for automotive applications and operates within a temperature range of -40°C to +125°C.
Feature Summary
- Current mode control architecture ensures fast transient response and simplified phase compensation.
- Integrated power FETs eliminate the need for external switching transistors.
- Frequency synchronization capability allows locking the switching clock to an external signal.
- Built-in self-resetting overcurrent protection safeguards against short-circuit conditions.
Applications
- Automotive infotainment systems
- ADAS sensor power supplies
- Body control modules (BCM)
- Telematics units
Procurement Notes
Verify the specific suffix CE2 matches the required package variant and tape/reel configuration. Confirm that the AEC-Q100 qualification grade aligns with the target automotive application requirements. Ensure the selected switching frequency setting is compatible with the available inductor inventory and EMI constraints of the final design.
Selection Notes
Select this component when a compact solution is required for low-voltage automotive loads. The wide frequency adjustment range facilitates optimization between efficiency and component size. Current mode control is advantageous for designs requiring rapid load changes without complex feedback loop compensation.
Part Context
This part belongs to ROHM's BD905xx series of synchronous buck converters designed for automotive environments. It complements other variants like the BD9S300MUF which offers higher current capacity. The series emphasizes miniaturization through high-frequency operation and integrated power stages suitable for space-constrained electronic control units.
Replacement Considerations
The BD90521MUV-C is listed as an alias for this part number. Verify pinout compatibility if substituting with other ROHM buck converters such as the BD90525EFJ, noting differences in package type and fixed versus adjustable output configurations.
