BD35221EFV-E2

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

The BD35221EFV-E2 is a fixed-output low-dropout linear regulator manufactured by ROHM Semiconductor. It provides a stable 1.2 V output with a maximum continuous current of 4 A. The device operates within an input voltage range of 1.25 V to 5.5 V and features a single output channel. It is housed in a 20-pin HTSSOP package designed for surface mount technology. The component supports an operating temperature range from -10 °C to +100 °C. Electrical characteristics include a line regulation of 0.1 %/V, a load regulation of 500 uV, and an input bias current of 1.4 mA. The maximum power dissipation is rated at 3.2 W.

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

• Ultra-low dropout performance enabled by built-in N-Channel power MOSFET
• High output current capability up to 4.0 A
• Integrated protection against thermal damage and overcurrent conditions

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

• Low input voltage to low output voltage power supply circuits
• Portable electronic devices requiring efficient voltage regulation
• Battery-powered systems minimizing conversion loss

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

Verify the obsolete status before design finalization. Confirm availability through authorized distributors as stock may be limited. Ensure the HTSSOP-20 footprint matches the target PCB layout. Validate that the 1.2 V fixed output aligns with system requirements. Check RoHS compliance documentation for regulatory adherence.

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

Select this component when a fixed 1.2 V rail is required with high current demand. The low dropout characteristic suits applications where input voltage closely approaches the output level. Consider the 20-pin package size for thermal management needs. Verify that the 5.5 V maximum input voltage meets the source supply constraints.

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

This part belongs to the BD35221EFV series of ultra-low dropout linear regulators. It shares architectural similarities with other members like the BD35222EFV-E2, which offers a 1.5 V output. The series focuses on minimizing the voltage difference between input and output to enhance efficiency in low-voltage applications.

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

The BD35222EFV-E2 is a related variant offering a 1.5 V output instead of 1.2 V. Direct substitution requires verifying if the system can tolerate the higher voltage. Other LDOs must match the 4 A current rating and HTSSOP-20 package for physical compatibility.