NCP752BSN18T1G

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

The NCP752BSN18T1G is a fixed-output low dropout regulator providing 1.8 V at up to 200 mA. It features ultra-low quiescent current of 12 µA and ultra-low noise of 11.5 µVRMS from 100 Hz to 100 kHz. The device operates with an input voltage range of 2.0 V to 5.5 V, offering high power supply rejection ratio of 68 dB at 1 kHz. It includes an enable pin, open-drain power good output, internal soft-start, thermal shutdown, and active output discharge.

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

• Ultra-low noise performance suitable for RF applications without requiring additional bypass capacitors
• Auto Low-Power Function optimizes quiescent current consumption for battery-operated devices
• Integrated Power Good flag and Enable logic for system control and monitoring
• Internal protections include thermal shutdown, current limit, and active output discharge

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

• Noise-sensitive RF applications such as satellite radios and infotainment equipment
• Portable medical devices and other battery-powered instrumentation
• Wireless handsets, Bluetooth, Zigbee, and GPS modules
• PDAs and smartphones requiring clean power supplies

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

Verify the specific suffix 'B' indicates the Power Good timeout delay characteristics defined in the datasheet electrical specifications. Confirm the package type matches the required PCB footprint, as the NCP752 series is available in TSOP-5 and XDFN packages. Ensure the ordering part number aligns with the desired fixed output voltage option within the 0.8 V to 3.5 V range.

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

Select this component when ultra-low noise and low quiescent current are critical for portable or RF designs. The NCP752BSN18T1G provides a stable 1.8 V output with minimal external component requirements. Consider the enable pin functionality for power management and the power good output for system status monitoring. Verify that the load transient response meets the application's dynamic requirements.

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

The NCP752 series is designed by onsemi as a high-performance LDO for noise-sensitive applications. It combines low dropout voltage with excellent line and load regulation. The device is optimized for portable electronics where battery life and signal integrity are paramount. The NCP752BSN18T1G represents a specific variant with fixed 1.8 V output and B-series timing characteristics.

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

Check for direct substitutes within the NCP752 family with different output voltages or package options. Verify compatibility with existing PCB layouts if switching between TSOP-5 and XDFN packages. Ensure replacement parts maintain similar noise and PSRR specifications for RF applications.

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

What is the typical quiescent current of the NCP752BSN18T1G?

The typical quiescent current is 12 µA at no-load conditions.

Does the NCP752BSN18T1G require an external capacitor for stability?

Yes, a minimum of 1.0 µF ceramic capacitor is recommended on both the input and output pins for stability.

How does the Power Good output function?

The Power Good output is an open-drain pin that indicates when the output voltage has reached its regulated level.