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 1A 16QSOP
- 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)：4.5V
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：1V
- Voltage - Output (Max)：3.8V
- Current - Output：1A
- Frequency - Switching：200kHz ~ 1MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-SSOP (0.154", 3.90mm Width)
- Supplier Device Package：16-QSOP
- Grade：-
- Qualification：-
Download product information
Overview
The EL7551CUZ is a monolithic synchronous buck switching regulator manufactured by Renesas Electronics Corporation. It integrates high-side and low-side power MOSFETs to deliver a regulated output voltage from 1 V to 3.8 V with a continuous output current of 1 A. The device operates at a fixed switching frequency of 1.2 MHz, enabling the use of small external inductors and capacitors. It features current mode PWM control for fast transient response and includes internal compensation. The component is housed in a 16-lead QSOP package and is rated for an operating temperature range of -40°C to +85°C.
Feature Summary
- Integrates synchronous rectification with internal high-side and low-side power switches for efficient step-down conversion.
- Utilizes current mode PWM architecture to provide inherent cycle-by-cycle current limiting and simplified loop compensation.
- Supports wide input voltage ranges suitable for various single-supply applications without requiring external bias supplies.
Applications
- Portable battery-powered equipment
- Point-of-load regulation for digital signal processors
- Embedded systems power management
Procurement Notes
Verify the specific suffix (e.g., CU vs. CUZ) against the manufacturer's datasheet to confirm lead-free status and RoHS compliance. Confirm availability as this part number may be subject to discontinuation or limited stock. Ensure the QSOP-16 package footprint matches the design requirements before procurement.
Selection Notes
Select this component when a compact solution is required for 1 A loads with minimal external passive components due to the high 1.2 MHz switching frequency. Consider the thermal performance of the QSOP-16 package under maximum load conditions. Verify that the required output voltage falls within the 1 V to 3.8 V adjustable range.
Part Context
The EL7551CUZ belongs to the EL7551 series of synchronous buck converters. This family is designed for applications requiring high efficiency and small board space. The device replaces discrete MOSFET solutions by integrating the power stage into a single IC, reducing component count and simplifying layout.
Replacement Considerations
Check for direct pin-compatible replacements within the Renesas EL75xx series. Verify if newer generations offer improved efficiency or different packaging options while maintaining the same electrical specifications.
