NCP4685ESQ33T1G

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

The NCP4685ESQ33T1G is a CMOS Low Dropout Linear voltage regulator with a fixed 3.3 V output and 150 mA current capability. It operates within an input voltage range of 1.70 V to 5.25 V, achieving an output accuracy of ±0.8% at 25°C. The device features ultra-low supply current of 1.0 µA and excellent temperature stability with a coefficient of ±40 ppm/°C. It includes integrated current fold-back protection and is stable with ceramic capacitors as small as 0.1 µF.

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

• Ultra-low quiescent current consumption optimized for always-on applications
• Integrated current fold-back protection against overcurrent and short circuits
• High ripple rejection and low output noise characteristics
• Stable operation when paired with standard ceramic output capacitors

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

• Battery-powered equipment requiring extended operational life
• Networking and communication infrastructure systems
• Cameras, DVRs, set-top boxes, and camcorders
• Home appliances utilizing low-power logic or sensor rails

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

Verify the specific package variant (SC-82AB) and marking code (P5) during procurement. Confirm RoHS compliance status through official documentation. Ensure ordering suffixes match exact voltage and package requirements. Validate lead times directly with authorized distributors. Check for any recent product change notifications affecting availability.

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

Select this component for designs prioritizing minimal standby power in continuously active circuits. The NCP4685 lacks a Chip Enable pin, distinguishing it from the NCP4682 series. Verify that the required output voltage falls within the available 1.2 V to 3.3 V range. Ensure thermal management aligns with the specified junction temperature limits under maximum load conditions.

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

This part belongs to the NCP4682/NCP4685 family of ultra-low supply current LDO regulators. While the NCP4682 offers a Chip Enable function for power saving, the NCP4685 variant is specifically designed for applications where the regulator remains permanently active. Both share identical electrical performance regarding dropout voltage, line regulation, and current handling capabilities.

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

NCP4685ESQ25T1G provides a 2.5 V output option within the same package and feature set. NCP4685ESQ15T1G offers a 1.5 V alternative. For designs requiring shutdown control, consider the NCP4682DSQ33T1G which includes a Chip Enable pin while maintaining similar electrical specifications.