RP115L181D5-E2

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

The RP115L181D5-E2 is a CMOS-based positive voltage regulator from the RP115x series, manufactured by Nisshinbo Micro Devices. It provides a fixed output voltage of 1.8 V with an operating current range of 500 mA to 1.0 A. The device features a typical supply current of 110 μA and standby mode current of 0.5 μA. It utilizes a DFN1216-8 package and includes built-in protections such as short-circuit current limiting, thermal shutdown at 165°C, and reverse current protection. The component supports active-high chip enable control and incorporates an auto-discharge function.

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

• Integrates reverse current protection circuitry to prevent backflow when input voltage drops below output voltage.
• Includes an auto-discharge mechanism that rapidly discharges external capacitors upon entering standby mode.
• Features constant slope start-up circuitry to suppress inrush current during initial power-on sequences.
• Provides selectable output current limits via the LCON pin for optimized performance under varying load conditions.

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

• Portable communication equipment
• Battery-powered electronic devices
• Cameras, VCRs, and camcorders
• Home appliances and office equipment

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

Verify the specific ordering suffixes against official documentation to confirm package type, CE pin polarity, and auto-discharge functionality. Ensure compatibility with required output voltage steps and current limit configurations before procurement. Cross-reference manufacturer part numbers with distributor listings to confirm availability and authenticity.

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

Select this component for applications requiring low dropout voltage and high ripple rejection in space-constrained designs. The DFN1216-8 package offers a compact footprint suitable for portable electronics. Consider the LCON pin configuration if variable current limiting between 500 mA and 1.0 A is necessary for system optimization.

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

This part belongs to the RP115x series of low-dropout regulators designed for mobile communication equipment and battery-powered devices. The series emphasizes low supply current and high accuracy, utilizing CMOS processes to achieve efficient power management. The RP115L variant specifically targets space-saving requirements through its small surface-mount package options.

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

Consult official substitution guides for compatible alternatives within the RP115x family or other Nisshinbo LDO series. Verify pin compatibility and electrical specifications before replacing existing components in established designs.

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

What is the function of the LCON pin on the RP115L181D5-E2?

The LCON pin allows users to select the output current limit between 500 mA and 1.0 A by setting the pin logic level to 'L' or 'H', respectively.

How does the auto-discharge feature operate?

When the chip enable signal switches to standby mode, the auto-discharge function activates to quickly lower the output voltage to 0 V by releasing stored charge in the external capacitor.

What protection circuits are integrated into this regulator?

The device includes built-in short-circuit current limiting, thermal shutdown (at 165°C), and reverse current protection to safeguard against overcurrent, overheating, and backward current flow.