BU25SA4WGWL-E2

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The BU25SA4WGWL-E2 is a single-output CMOS low-dropout (LDO) voltage regulator manufactured by ROHM Semiconductor. It provides a fixed output voltage of 2.5 V with a maximum output current of 200 mA. The device operates within an input voltage range of 1.7 V to 5.5 V and features a typical dropout voltage of 80 mV at 100 mA, with a maximum of 150 mV. It offers high power supply rejection ratio (PSRR) of 70 dB and maintains voltage regulation accuracy within ±0.6%. The IC includes protection functions such as thermal shutdown and over-current protection, operating reliably across a temperature range of -40°C to +85°C in a WLCSP-4 package.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Provides stable fixed voltage output with high precision regulation accuracy
• Features ultra-low dropout voltage for efficient power management under varying load conditions
• Integrates comprehensive protection mechanisms including thermal shutdown and over-current limiting

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Power supply for logic integrated circuits
• RF circuit power sources
• Camera module power systems

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix E2 against official ROHM documentation to confirm compliance with environmental standards and material declarations. Ensure the ordering part number matches the required package variant and tape/reel specifications. Cross-reference the manufacturer's latest datasheet to validate active status and recommended design-in guidelines before finalizing procurement orders.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a compact surface-mount solution is required for low-power applications needing precise voltage regulation. The WLCSP-4 package suits space-constrained designs. Verify that the 200 mA output current meets the load requirements and that the 2.5 V fixed output aligns with the target circuit's voltage needs without requiring external adjustment resistors.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This device belongs to the BUxxSA4 series of high-performance CMOS LDO regulators from ROHM Semiconductor. The series is characterized by low circuit current consumption and excellent noise characteristics. These regulators are designed for portable electronic devices where power efficiency and small footprint are critical design parameters.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

BU30SA4WGWL-E2: Same package and current rating but different fixed output voltage (3.0 V).

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

Does the BU25SA4WGWL-E2 include a shutdown function?

Yes, the device integrates a shutdown function to reduce power consumption when the regulator is not in use.

What is the typical ripple rejection ratio of this LDO?

The typical power supply rejection ratio (PSRR) is 70 dB, ensuring effective suppression of input noise.