Renesas introduces the EL7531, a synchronous step-down regulator featuring an integrated FET and internal compensation. It operates over an input voltage range of 2.5 V to 5.5 V, making it suitable for a variety of power sources, including 3.3 V, 5 V, and Li-Ion batteries. The device can deliver up to 1 A of output current, with the output voltage adjustable from 0.8 V to the input voltage using an external resistive divider. Its small 10-pin MSOP package ensures a compact design, with a PCB footprint of less than 0.15 in².
Key features
- Manufacturer: Renesas
- Input Voltage Range: 2.5 V to 5.5 V
- Output Current: Up to 1 A
- Adjustable Output Voltage: 0.8 V to VIN (using an external resistive divider)
- Operation Modes: Automatic PFM/PWM mode control, PWM-only mode
- PWM Frequency: 1.4 MHz typical, can be synchronized up to 12 MHz
- Low Quiescent Current: 120 µA (no load)
- Power-Saving Features: Power-Good output, 1µA shutdown current
- Protection: Built-in short-circuit and over-temperature protection
- Package: Compact 10-pin MSOP
Key applications
The EL7531 is ideal for use in applications requiring efficient step-down voltage regulation, such as:
- Portable electronics powered by Li-Ion batteries
- Systems utilizing 3.3 V or 5 V supplies
- Devices with space-constrained designs
