RP115H351D-T1-FE

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

The RP115H351D-T1-FE is a CMOS-based positive voltage regulator from the RP115x series, manufactured by Nisshinbo Micro Devices Inc. It provides a fixed output voltage of 3.5 V with a maximum output current of 1.0 A. The device operates within an input voltage range of 1.4 V to 5.25 V and features a typical dropout voltage of 0.235 V at full load. It includes built-in protection circuits for short current limits, thermal shutdown, and reverse current prevention. The component is housed in a SOT-89-5 package and supports active-high chip enable control.

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

• Integrated reverse current protection circuit prevents backflow when output voltage exceeds input voltage.
• Built-in thermal shutdown and peak current limit circuits protect against overheating and overcurrent conditions.
• Constant slope start-up circuit suppresses inrush current during initialization.
• Low supply current consumption extends battery life in portable applications.

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

• Portable communication equipment
• Battery-powered devices
• Cameras and camcorders

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

Verify the specific ordering suffix D-T1-FE corresponds to the SOT-89-5 package with active-high CE and auto-discharge functionality as defined in the selection guide. Confirm that the required output voltage step matches the standard 0.1-V increment available for this series variant. Ensure compatibility with recommended ceramic capacitors for stable operation.

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

Select this model for applications requiring a fixed 3.5 V output with up to 1.0 A current capability in a compact SOT-89-5 package. The RP115H variant lacks the LCON pin found in RP115L versions, fixing the current limit at 1.0 A. Consider the thermal dissipation capabilities of the SOT-89-5 package relative to the expected power load and ambient temperature conditions.

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

This component belongs to the RP115x series of low dropout regulators designed for space-saving and high-performance power management. The series offers both DFN1216-8 and SOT-89-5 packages, with the latter providing higher power handling capabilities. The RP115H designation specifically indicates the SOT-89-5 package configuration with a fixed 1.0 A output current limit.

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

Direct substitutes within the same series include other RP115Hxx1D-T1-FE variants with different fixed output voltages. Cross-series replacements such as RP115Lxx1D-E2 offer similar electrical characteristics but utilize a DFN1216-8 package and include an LCON pin for adjustable current limiting.