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Product Detailed Parameters
- Description：IC REG BUCK ADJ 4A 28HTSSOP
- Series：-
- Mfr：Renesas Electronics Corporation
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：3V
- Voltage - Input (Max)：6V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：6V
- Current - Output：4A
- Frequency - Switching：200kHz ~ 1MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：28-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：28-HTSSOP
- Grade：-
- Qualification：-
Download product information
Overview
The EL7554IRE-T7 is a monolithic synchronous step-down DC/DC regulator manufactured by Renesas Electronics Corporation. It provides a continuous output current of 4A with an adjustable output voltage range from 0.8V to 6V. The device operates within an input voltage window of 3V to 6V and supports a programmable switching frequency between 200kHz and 1MHz. It utilizes a 28-pin HTSSOP package with exposed pad for thermal management.
Feature Summary
- Integrates internal CMOS power FETs for high efficiency operation up to 96%.
- Features peak current mode PWM control with soft-start and complete startup sequencing capabilities.
- Includes diagnostic functions such as junction temperature indication and power good status monitoring.
Applications
- Point-of-regulation power supplies
- FPGA core and I/O power delivery
- DSP and CPU core power systems
Procurement Notes
Verify component authenticity through authorized channels due to discontinuation status. Confirm RoHS compliance and moisture sensitivity level (MSL 3) requirements during storage and handling. Validate that the specific tape-and-reel packaging matches design specifications for automated assembly processes.
Selection Notes
Select this component for designs requiring compact synchronous buck regulation within a 3V to 6V input range. Ensure the 28-pin HTSSOP footprint aligns with PCB layout constraints. Consider the 200kHz to 1MHz frequency range when selecting external inductors and capacitors for optimal transient response and size reduction.
Part Context
Originally developed by Intersil, the EL7554 series was acquired by Renesas Electronics Corporation. This part belongs to a family of high-efficiency synchronous regulators designed for low-voltage, high-current applications. The product line has been discontinued, necessitating careful evaluation of long-term supply chain stability for new designs.
Replacement Considerations
Public confirmed substitute part number: EL7222CSZ-T7.
FAQ
What is the maximum switching frequency supported by the EL7554IRE-T7?
The device supports a programmable switching frequency up to 1MHz.
Does the EL7554IRE-T7 include internal power switches?
Yes, it integrates internal CMOS power FETs, eliminating the need for external MOSFETs.
