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Product Detailed Parameters
- Description：IC REG BUCK ADJ 4A 28HTSSOP
- Series：-
- Mfr：Elantec
- Package：Tube
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：3V
- Voltage - Input (Max)：3.6V
- Voltage - Output (Min/Fixed)：1V
- Voltage - Output (Max)：2.5V
- 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：-
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Overview
The EL7563CREZ is a monolithic, full-featured synchronous step-down DC/DC regulator manufactured by Renesas (formerly Intersil). It delivers 4A continuous output current with up to 95% efficiency. The device operates at a constant frequency PWM mode with an adjustable switching frequency up to 1MHz and supports external oscillator synchronization. It features integrated synchronous MOSFETs, patented resistorless current sensing for cycle-by-cycle current limiting, and power tracking for multi-supply sequencing. The input voltage range is 3V to 3.6V, with an adjustable output voltage from 1.0V to 2.5V. It includes over-voltage, over-temperature, and under-voltage lockout protections.
Feature Summary
- Integrated synchronous MOSFETs and current mode controller
- Patented on-chip resistorless current sensing
- Power tracking for start-up sequencing
- Junction temperature indicator
Applications
- Desktop applications
- Portable applications
Procurement Notes
Verify the manufacturer origin, as EL7563CREZ is often associated with Intersil or Renesas. Confirm RoHS compliance status and package type (TSSOP28) against official datasheets. Ensure the specific suffix matches the required temperature range and lead-free specifications.
Selection Notes
Select this component for designs requiring high efficiency and compact size in low-voltage, high-current applications. Consider its 3V to 3.6V input constraint and 4A output capability. Evaluate the need for external synchronization and power tracking features relative to system requirements.
Part Context
The EL7563CREZ belongs to the EL756x series of synchronous buck regulators. It shares functional similarities with the EL7564 but differs in pinout and specific feature sets. It is designed for space-constrained environments requiring robust protection and precise regulation.
Replacement Considerations
Check for direct equivalents like the EL7564CREZ if pin compatibility allows. Verify thermal performance and control loop stability when substituting with other 4A synchronous buck regulators from different manufacturers.
