ADP7182ACPZN-5.0R7

Overview

The ADP7182ACPZN-5.0R7 is a CMOS low dropout linear regulator designed for negative voltage applications, operating from an input range of −2.7 V to −28 V. It provides a fixed output of −5 V with a maximum load current of −200 mA. Key electrical characteristics include an output noise of 18 μVrms and a power supply rejection ratio of 66 dB at 10 kHz. The device features a low dropout voltage of −185 mV at full load and maintains accuracy within ±2% over line, load, and temperature variations.

Feature Summary

• Provides ultra-low output noise independent of the selected output voltage setting
• Supports flexible enable logic compatible with both positive and negative control signals
• Ensures stability using small ceramic capacitors as low as 2.2 μF
• Integrates comprehensive protection against current overload and thermal stress

Applications

• Powering analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuits
• Supplying precision amplifiers in instrumentation systems
• Regulating noise-sensitive sections in communications infrastructure
• Providing clean power rails for medical and healthcare equipment

Procurement Notes

Verify the specific package variant and suffix against the manufacturer's official ordering guide to ensure compatibility with design requirements. Confirm that the fixed −5 V output configuration matches the target application voltage needs. Check for any recent revision updates or lifecycle status changes directly from Analog Devices documentation before finalizing procurement plans.

Selection Notes

Select this component when designing systems requiring stable negative voltage regulation from high input rails down to low output levels. Ensure the input voltage remains within the specified operational range while accounting for dropout requirements under maximum load conditions. Verify that the PCB layout supports the required thermal dissipation and capacitor placement for optimal performance.

Part Context

This part belongs to the ADP7182 series of high-voltage, low-noise LDO regulators manufactured by Analog Devices. The series is engineered for high-performance analog and mixed-signal circuits, offering adjustable or fixed output options. It utilizes a proprietary architecture to achieve excellent transient response and high power supply rejection ratios across varying load conditions.

Replacement Considerations

Consult the official ADP7182 datasheet ordering guide for confirmed substitute part numbers with different output voltages or package styles. Do not assume functional equivalence with other LDO families without verifying pinout, electrical specifications, and thermal characteristics.