BA25BC0T

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

The BA25BC0T is a fixed-output Low Dropout (LDO) regulator manufactured by Rohm Semiconductor, designed for applications requiring stable voltage regulation with high current capability. It delivers a maximum output current of 1A with a fixed output voltage accuracy of ±2.0% at 25°C ambient temperature. The device operates within an input voltage range of 3V to 16V and withstands up to 18V. Key electrical characteristics include a typical dropout voltage of 0.3V at 0.2A load, a ripple rejection of 55dB, and load regulation of 35mV across the full load range. It requires a 22µF output capacitor and functions within an operating temperature range of -40°C to 105°C.

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

• PNP output transistor architecture providing low saturation voltage characteristics for efficient power management.
• Integrated thermal shut-down circuitry to prevent damage during over-temperature conditions.
• Built-in overcurrent protection mechanism to safeguard against short-circuiting and excessive loading.

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

• General purpose DC-DC conversion requiring stable 2.5V rail generation
• Battery-powered equipment needing low dropout performance
• Industrial control systems requiring robust overload protection

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

Verify the specific suffix and package variant when ordering, as the BAxxBC0 series includes multiple pin configurations such as TO220FP-3 and TO220FP-5. Confirm that the required output voltage matches the fixed 2.5V specification, as other variants in the family offer different voltages. Ensure the application design accounts for the mandatory 22µF output capacitor requirement for stability. Check current manufacturing status, as some older revisions may be marked as end-of-life or obsolete depending on the region and distributor.

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

Select the BA25BC0T when a fixed 2.5V output is required with up to 1A continuous current capability. This component is suitable for designs where input voltage varies between 3V and 16V but must maintain a regulated output. Consider this part if low dropout voltage is critical for efficiency near the minimum input threshold. Verify that the system does not require shutdown functionality or soft-start features, as this specific model lacks those controls. Ensure the thermal environment supports operation up to 105°C junction temperature.

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

The BA25BC0T belongs to the BAxxBC0 family of 1A variable/fixed output LDO regulators from Rohm Semiconductor. This series is characterized by its PNP output stage, which enables lower dropout voltages compared to standard NPN-based LDOs. The family offers various fixed output voltages ranging from 1.5V to 10V, sharing common protection features like thermal shut-down and overcurrent protection. These regulators are typically housed in TO220FP packages for effective heat dissipation in medium-power applications.

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

Direct substitutes within the same family include BA15BC0T (1.5V), BA33BC0T (3.3V), and BA50BC0T (5.0V) if voltage adjustment is acceptable. For equivalent specifications with shutdown pins, consider the BAxxBC0W series (e.g., BA25BC0WT). Cross-vendor replacements should match the 1A current rating, 2.5V output, and TO220FP-3 package constraints.