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Product Detailed Parameters
- Description：IC REG BUCK ADJ 1A 10MSOP
- Series：-
- Mfr：Renesas Electronics Corporation
- Package：Tube
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：2.5V
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：5.5V
- Current - Output：1A
- Frequency - Switching：1.4MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Supplier Device Package：10-MSOP
- Grade：-
- Qualification：-
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Overview
The EL7531IY is a monolithic synchronous step-down switching voltage regulator manufactured by Renesas Electronics Corporation. It integrates power FETs and operates with an input voltage range of 2.5V to 5.5V, delivering an adjustable output from 0.8V to 5.5V at up to 1.2A. The device utilizes a fixed 1.6MHz switching frequency and employs a buck topology. It features internal compensation for simplified design. The component is housed in a compact MSOP-10 package (3mm x 3mm) and supports surface mount installation. It functions within a temperature range of -40°C to +85°C.
Feature Summary
- Integrates synchronous rectification with internal power FETs for high efficiency
- Includes internal compensation network to reduce external component count
- Supports adjustable output voltage via external resistor divider
- Operates at a fixed high switching frequency for small passive size
Applications
- Portable battery-powered equipment requiring efficient step-down conversion
- Point-of-load regulation for digital logic circuits
- General-purpose DC-DC power management in compact systems
Procurement Notes
Verify the specific suffix (e.g., IY vs IYZ) against the manufacturer's current datasheet to confirm package dimensions and pinout compatibility. Confirm availability status as some variants may be discontinued or subject to lifecycle changes. Ensure RoHS compliance documentation matches the required manufacturing standards for your assembly process.
Selection Notes
Select this component when a compact solution is needed for low-voltage, moderate-current applications. The fixed 1.6MHz frequency allows for smaller inductors compared to lower-frequency regulators. Verify that the load current requirements do not exceed the 1.2A limit and that the input voltage remains within the 2.5V to 5.5V operational window.
Part Context
The EL7531 belongs to the EL7531 series of monolithic step-down regulators. It is part of Renesas' portfolio of PMIC solutions derived from Intersil technology. The device is categorized under switching voltage regulators and is designed for applications prioritizing space savings and integration density over programmable frequency adjustment.
Replacement Considerations
Check for EL7531IYZ as a potential variant with identical electrical specifications but potentially different packaging or tape-and-reel options. Verify if newer generations from Renesas offer direct pin-compatible upgrades with enhanced efficiency or wider input ranges.
