BA1117FP-E2

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

The BA1117FP-E2 is a 1A adjustable output Low Dropout (LDO) voltage regulator manufactured by ROHM Semiconductor. It operates within an input voltage range of 2.15V to 10V, with a maximum withstand voltage of 15V. The device provides an adjustable output based on a 1.25V reference voltage, achieving ±1% accuracy at 25°C and ±2% across the full temperature range. Key electrical characteristics include a typical dropout voltage of 1.2V at 1A load and a high supply voltage rejection ratio of 75dB. It features integrated thermal shutdown and over-current protection, operating reliably from -20°C to +105°C in a TO-252-3 package.

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

• Adjustable output configuration utilizing a stable 1.25V internal reference voltage for precise regulation.
• Integrated thermal shutdown and over-current protection circuits ensure robust operation under fault conditions.
• High supply voltage rejection capability minimizes noise impact from power supply variations.

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

• Battery-powered equipment requiring efficient linear regulation
• General-purpose power supplies needing low dropout performance
• Post-regulation stages for switching power converters

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

Verify the specific suffix E2 confirms RoHS compliance and lead-free status as per manufacturer documentation. Confirm the TO-252-3 package variant matches the required PCB footprint. Ensure the adjustable version aligns with external resistor network requirements for the target output voltage. Cross-reference the latest datasheet for any updates to absolute maximum ratings or recommended operating conditions before finalizing procurement specifications.

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

Select this component when a 1A current capacity with low dropout voltage is required for adjustable voltage applications. The wide operating temperature range supports industrial environments. Verify that the input voltage remains within the 10V maximum limit and that the desired output voltage can be set using external resistors compatible with the 1.25V reference. Consider the thermal performance in the TO-252-3 package relative to the expected power dissipation.

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

This part belongs to the BA1117 series of LDO regulators from ROHM Semiconductor. It is designed as a surface-mount alternative to through-hole regulators, offering similar electrical performance in a compact DPAK-style package. The series is characterized by its ability to drive high loads while maintaining stability with ceramic capacitors, simplifying circuit design compared to older regulator families requiring specific output capacitance types.

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

Direct pin-compatible replacements may include other 1A adjustable LDOs in TO-252 packages, such as the LM1117 or AMS1117 series, provided their electrical parameters like dropout voltage and reference accuracy meet the design requirements. Verify thermal resistance and maximum input voltage limits of potential substitutes to ensure they match or exceed the BA1117FP-E2 specifications.