ADP172ACBZ-2.1-R7

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

The ADP172ACBZ-2.1-R7 is a CMOS linear regulator providing a fixed 2.1 V output with a maximum current of 300 mA. It operates within an input voltage range of 1.6 V to 3.6 V and features a low dropout voltage of 50 mV at full load. The device draws 23 µA quiescent current at no load and less than 1 µA in shutdown mode. Output accuracy is ±1%, with line regulation of ±0.25 %/V and load regulation of 0.001 %/mA. Power supply rejection ratio reaches 73 dB at 1 kHz and 70 dB at 10 kHz, while output noise is 40 µV rms. It includes thermal shutdown at 150°C and current limiting at 450 mA.

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

• Logic-controlled enable pin for power management
• Integrated short-circuit and thermal overload protection
• Optimized stability with small ceramic capacitors
• Low noise performance without additional bypass components

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

• Mobile phones
• Digital camera and audio devices
• Portable and battery-powered equipment
• DSP/FPGA/microprocessor supplies
• Post dc-to-dc regulation

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

Verify the specific suffix R7 indicates reel packaging when sourcing. Confirm RoHS compliance status via the manufacturer's ordering guide. Ensure the component matches the exact model number for the required 2.1 V output. Check datasheet revisions for any updates to specifications or recommended operating conditions before finalizing procurement.

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

Select this component for applications requiring a fixed 2.1 V rail from a single-cell lithium-ion source. The low quiescent current makes it suitable for battery-operated portable electronics. Ensure the PCB layout accommodates the 4-ball WLCSP package dimensions. Verify that the input voltage remains above the minimum threshold during operation.

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

This part belongs to the ADP172 series of low-dropout linear regulators manufactured by Analog Devices. The series offers multiple fixed output voltage options ranging from 0.8 V to 3.0 V. All variants share the same 4-ball WLCSP package and core electrical characteristics, differing primarily in their internal feedback resistor networks to set the specific output voltage.

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

Other ADP172ACBZ variants with different output voltages (e.g., ADP172ACBZ-1.8-R7) are pin-compatible but provide different fixed outputs. No direct cross-brand replacements are confirmed in the provided documentation.