BD3540NUV-E2

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

The BD3540NUV-E2 is a single-channel ultra-low dropout linear regulator manufactured by ROHM Semiconductor, housed in a VSON-10 surface-mount package. It features an adjustable output voltage range from 650 mV to 5.2 V with a reference voltage of 650 mV and a regulation accuracy of 1%. The device supports a maximum output current of 500 mA and operates within an input voltage range of 0.95 V to 5.5 V. Key electrical parameters include a typical dropout voltage of 200 mV, a maximum of 300 mV, line regulation of 0.1 %/V, and load regulation of 500 uV. Quiescent current is 700 uA, with a power dissipation rating of 3.03 W and an operating temperature range of -10°C to +100°C.

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

• Utilizes a built-in N-channel power MOSFET to achieve ultra-low dropout voltage characteristics for high efficiency.
• Incorporates an NRCs (soft start) function to control output voltage ramp-up and reduce in-rush current magnitude.
• Includes integrated protection mechanisms such as a built-in current limit circuit and thermal shutdown (TSD) circuit.

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

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

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

Verify the component status carefully before procurement, as the BD3540NUV-E2 is designated as NRND (Not Recommended for New Designs). Confirm availability through authorized distributors and check for lead time constraints associated with existing stock. Ensure that the VSON-10 package dimensions align with your PCB footprint requirements and validate RoHS compliance documentation prior to finalizing orders.

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

Select this regulator when designing circuits with input voltages between 0.95 V and 5.5 V requiring an adjustable output up to 5.2 V. It is suitable for applications needing 500 mA output current with minimal voltage drop. Consider the VSON-10 package size for space-constrained designs. Compare against the BD3541NUV-E2 if higher current capacity (1.0 A) is required, noting the similar pinout and feature set but different current ratings.

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

The BD3540NUV-E2 belongs to the BD3540NUV/BD3541NUV series of ultra-low dropout linear regulators from ROHM Semiconductor. These components are designed to operate from very low input supplies, offering performance comparable to switching regulators while maintaining simplicity. The series utilizes N-channel power MOSFETs to minimize on-resistance and dropout voltage, making them ideal for low-voltage, high-efficiency linear regulation tasks in compact packages.

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

The BD3541NUV-E2 serves as a direct functional substitute within the same family, offering identical package and pin configuration but with a higher maximum output current of 1.0 A compared to the BD3540NUV-E2's 500 mA. Both share the same adjustable output voltage range and protection features. Designers should verify thermal dissipation capabilities when upgrading to the higher-current variant under similar load conditions.