RP170N311B-TR-YE

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

The RP170N311B-TR-YE is a low-dropout regulator from the RP170x-Y series, designed for industrial applications. It provides a fixed output voltage of 3.1 V with a maximum output current of 300 mA and supports an input voltage range of 2.6 V to 10.0 V. The device operates within a temperature range of -50°C to 105°C and features a typical supply current of 23 µA. Key electrical characteristics include ±1.0% output voltage accuracy, 70 dB ripple rejection at 1 kHz, and a dropout voltage of typically 0.980 V at 300 mA load. It incorporates fold-back protection, thermal shutdown at 165°C, and a soft-start function.

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

• High-reliability semiconductor device for industrial applications that has passed high-temperature screening and extended reliability tests.
• Built-in fold-back protection circuit limits short-circuit current to approximately 40 mA.
• Thermal shutdown circuit activates at 165°C to protect the device under excessive heat conditions.
• Constant slope circuit provides a soft-start function to prevent inrush current during power-up.

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

• Industrial automation equipment such as factory automation systems
• Smart meters operating in harsh environments
• Surveillance cameras and vending machines used under high-temperature conditions
• Equipment accompanied by self-heating such as motors and lighting

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

Verify the specific ordering suffix against the manufacturer's selection guide to confirm package type and auto-discharge functionality. Ensure the required output voltage matches the available set points listed in the datasheet. Confirm RoHS compliance and halogen-free status if required by your manufacturing standards. Cross-reference the part number with official distributor catalogs to validate availability and lead times before finalizing procurement plans.

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

Select this component when a fixed 3.1 V output is required for industrial-grade LDO applications. The SOT-23-5 package offers a compact footprint suitable for space-constrained designs. Consider the thermal dissipation capabilities based on the ambient temperature and PCB layout. Verify that the external capacitor meets the minimum capacitance requirement for stable operation. Evaluate the need for the chip enable pin to manage standby mode power consumption effectively.

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

This part belongs to the RP170x-Y series, which includes variants with different output voltages and packages. The 'N' designation indicates the SOT-23-5 package, while 'H' denotes SOT-89-5. The 'B' suffix specifies no auto-discharge function, whereas 'D' includes it. The '-YE' suffix identifies the reel packaging format. Other series members share similar electrical characteristics but differ in output voltage settings and physical dimensions.

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

Direct substitutes within the same family include RP170N311B-TR-FE or RP170N311D-TR-YE depending on the required auto-discharge feature. For alternative packages, consider RP170H311B-T1-YE. Ensure any replacement maintains the same output voltage, current rating, and operating temperature range. Verify pin compatibility and thermal performance characteristics before implementing changes.